CA1264397A - Process for producing propylene polymer - Google Patents
Process for producing propylene polymerInfo
- Publication number
- CA1264397A CA1264397A CA000496993A CA496993A CA1264397A CA 1264397 A CA1264397 A CA 1264397A CA 000496993 A CA000496993 A CA 000496993A CA 496993 A CA496993 A CA 496993A CA 1264397 A CA1264397 A CA 1264397A
- Authority
- CA
- Canada
- Prior art keywords
- propylene
- polymer
- living
- propylene polymer
- ethylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/06—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type
- C08F297/08—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
- C08F297/083—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins the monomers being ethylene or propylene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
Abstract
ABSTRACT OF THE DISCLOSURE
A process for producing a propylene polymer having a carbonyl group at the terminal, said process comprising polymerizing propylene to give a living propylene polymer in the presence of a catalyst composed of beta-diketone vanadium chelate and an aluminum compound represented by the formula R2AlX (wherein R is a hydro-carbon group having 1 to 8 carbon atoms and X is a halogen atom), and reacting the living propylene polymer with a carbonylating agent.
A process for producing a propylene polymer having a carbonyl group at the terminal, said process comprising polymerizing propylene to give a living propylene polymer in the presence of a catalyst composed of beta-diketone vanadium chelate and an aluminum compound represented by the formula R2AlX (wherein R is a hydro-carbon group having 1 to 8 carbon atoms and X is a halogen atom), and reacting the living propylene polymer with a carbonylating agent.
Description
a397 1 Field of the invention . _
2 The present invention relates to a process for producing a
3 propytene polymer having a carbonyl group at the terminal.
4 Prirr art It is known that if carbon monoxide is during olefin polymeriza-6 tion in the presence of a Ziegler-Natta catalyst, the pol~nerization 7 is suspended, with the result $hat carbon monoxide is interposed 8 between the transition metal-polymer bond. In this case, various 9 chain transfer reactions and termination reactions are operative so that the carbonylation at the terminal takes place in only the few 11 polymer chains which are living at the moment of carbonylation. It 12 is also a feature of polymerizations of this prior art type that they 13 produce polymers with broad molecular weight distribution (Mw/~n ~2).
14 Problems to be solved bv the invention It is an object of the present invention to provide a nearly 16 monodisperse propylene polymer in which every polymer chain has a 17 carbonyl group.
18 The present inventors had previously found that a nearly mono-;19 disperse living polypropylene is formed when propylene is polymerized using a catalyst composed of V(acetylacetonate)3 and 21 Al(C2H5)2Cl. [Makromol. Chem. 180, 1359 (1979), and 22 Macromolecu1es., 12, 814 (1979)]
23 The present inventors found that when this living polypropylene 24 is reacted with a carbonylating agent such as carbon monoxide, carbonyl groups can be introduced into the terminals of almost all 26 the polymer chains. The present invention was completed based on ; 27 this finding.
28 Means to solve the problems 29 Summary of th _ nvention ~ The gist of the invention resides in a process for produc;ng a 31 propylene polymer having a carbonyl group at the terminal, said 32 process comprising polymerizing propylene to give a living propylene 33 ~polymer in the presence of a catalyst composed of beta-diketone 34 vanadium chelate and an aluminum compound~represented by the formula R2AlX (where R is a hydrocarbon group having 1 to 8 carbon atoms ,,' :
, ~ .
lZ~4;31~7 1 and X is a halogen atom), and reacting the living propylene palymer 2 with a carbonylating agent.
3 Catalyst .
4 The catalyst system used in this invention is composed of beta-diketone vanadium chelate (referred to as the vanadium compound 6 hereinafter) represented by the formula below:
8 1R\ ~CH \ /R2 ~
lo ~ d, ~o ) 3 11 (where Rl and R2 are the same or different alkyl groups or aryl 12 groups) and an aluminum compound represented by the formula R2AlX
13 (where R is a hydrocarbon group having from 1 to 8 carbon atoms, 14 especially an alkyl group or aryl group, and X is a halogen atom).
Examples of the vanadium compound include V(acetylacetonate)3, 16 V(benzoylacetylacetonate)3, and V(dibenzoylmethanate)3. Examples 17 Of the aluminum compound include dimethyl alurninum chloride, diethyl 18 aluminum chloride, diethyl aluminum bromide, and diisobutyl alum;num 19 chloride.
Production of living propylene ~olymer 21 Thé living propylene polymer is obtained by homopolymerizing 22 propylene or copolymerizing propylene with ethylene or an alpha-23 olefin~having 4 or more carbon atoms, desirably from 4 to 12 carbon~
24 atoms and preferably 1 to 6 carbon atoms (such as l-butene, l-hexene, and 4-methyl-1-pentene, excluding propylene) in the presence of the 26 above-mentioned catalyst.
27 The copolymerization of propylene with ethylene or an alpha-28 olefin (referred to as comonomer hereinafter) is accomplished by 29~ random copolymerization of propylene dnd comonomer, block copoly-~30 merization of propylene homopolymer and comonomer, or block copoly-31~ merization~ of a propylene-comonomer random copolymer and ethylene or 32 an alpha-olefin having 3 or more carbon atoms, desirably 3 to 12 33~ carbon dtoms~and preferably 3 to 6 carbon atoms.
34 ~ ~ ~The polymer~ization reaction should preferably be carried out in a solvent which is immUne to the polymerization reaction and is liquid 36 ~at the time of polymerization~ Examples~of the solvent include 37 saturated aliPhatic hydrocarbons~(such as propane, butane, pentane, 38 hexane~ and heptane), saturated alicyclic hydrocarbons (such as ~2~ 97 1 cyclopropane and cyclohexane), and aromatic hydrocarbons (such as 2 benzene, toluene, and xylene).
3 The homopolymerization of propylene or the random copolymeriza-4 tion of propylene with comonomer should preferably be accomplished by adding in succession a solution of the aluminum compound and a solu-6 tion of the vanadiu~ compound to a solution of propylene or a solu-7 tion of propylene and comonomer dissolved in a solvent.
8 In the homopolymerization of propylene or the random copolymeri-9 zation of propylene with comonomer, the polymerization catalyst is used in such an amount that the vanadium compound is 1 x 10 4 to 11 0.01 mol, Preferably 5 x 10 4 to 5 x 10 3 mol, and the organo-12 aluminum compound is~l x 10 3 to O.l mol, preferably 5 x lQ 3 to 13 0.01 mol, for 1 mol of propylene or 1 mol of propylene and comonomer 14 in all. In addition, the amount of the organoaluminum compound should be 5 to 25 mol for 1 mol of the vanadium compound.
16 The molecular weight and yield of the living propylene homo-17 polymer or the living propylene random copolymer may be adjusted by 18 changing the reaction temperature and reaction time. If the poly-19 merization temperature is low, particularly below -50C, the resulting polymer has a molecular weight distribution which is close 21 to;that of monodisperse polymer.~ Polymerization at -65C or below 2Z provides a~living polymer hav~ng~ and Mw/Mn of 1.05 to 1.40 (where Mw~
23~is the weight-average molecular~weight and Mn is the number-average 24 ~molecular weight). ~ ~
~The;polymerizatian reaction permits the~use of a reaction 26 accelerator such as anisole, water, oxygen, alcohols (methanol, 27 ethanol, isopropanol, etc.), and esters (ethyl benzoate, ethyl 28 acetate, etc.). The reaction accelerator is used usually in an 29 amount of 0.1 to 2 mol for 1 mol of the vanadium compound.
30~ The~comonomer in the living random copolymer composed o~ propy-3~ ene and comonomer usually accounts for uP to 80 wt%. This~value can 32 be~adjusted by~changing the amount of comonomer used at the time of 33~ ving polymerizatlon. When the amount oF~comonomer, especially 34 ethylene, is increased, the resulting copolymer has a broad molecular 35~ wei~ght~distribution.~ This is undesirable.~;Where a living copolymer 36 of high~ethylene content with a narrow molecular weight distribution 37~is to be~produced, polymerization should preferably be performed in 38 the following manner. That is, living polymerization for a very ^'' : :
.
~2iEi4397 1 small amount of propylene should be performed before living copoly-2 merization for propylene and ethylene. This permits the introductlon 3 of a large amount of ethylene into the copolymer, while keeping the 4 molecular weight distribution of the living copolymer narrow. This polymerization method is illustrated with an example below. At 6 first, Propylene alone is supplied to the polymerization system to 7 produce living polypropylene having a number-average molecular weight 8 of preferably 500 to 2,000. Then, ethylene is supplied in the 9 presence of a large amount of unreacted propylene monomer to continue living Polymerization until the random copolymerization of ethylene 11 and propylene comes to an end.
12 The thus obtained living homopolymer of propylene or living 13 random copolymer of propylene and comonomer is made into a living 14 block copolymer by living polymerization with a comonomer. This is accomplished by supplying a comonomer (which is dif~erent from the 16 one used in the living random copolymerization with propy1ene) to the 17 system in which the living homopolymer or living random copolymer and 18 propylene are present, and performing living polymerization in the 19 same manner as mentioned above. Usually, the comonomer accounts for up to 50 wt% in the block portion of the block copolymer. This 21 amount can be adjusted by changing the amount of the comonomer used 22 at the time of block copolymerization.
23 ~ According to the above-mentioned method, it is possible to 24 produce a living proPylene polymer having a number-average molecular 25 ~weight~(in terms of propylene [to be repeated hereinafter]) of about 26 500 to about 1,000,000 wh;ch is similar to monodisperse polymers.
27 Carbonylatin~ process 28 When the living propylene polymer comes into contact with a 29 carbonylating agent, the living polymerization stops and, at the same time, the carbonylation proceeds so that a carbonyl group is intro-31 duced into the terminal of the polymer chain. Thus the carbonylation 32 o~ the living propylene polymer is accomplished.
33 ~ Examples of the carbonylating agent that can be used include 34 carbon monoxide and carbon dioxide.~ They may be used as such or after dilution with an inert gas or 1iquid.
36 The reaction is performed at atmospheric pressure or under pres-37 ~sure, at a temperature of -100C to +100C, preferably -80C to O~C, 38 for 5 minutes to 10 hours.
' : ~
_ 5 _ ~ ~43~ `
1 Incidentally, "carbony1ation" as used herein means the intro-2 duction of the ~C=O bond into the Polymer molecule.
3 The propylene polymer which has undergone carbonylation is 4 separated and recovered by the addition of alcohol (methanol, ethanol, etc.) to the reaction system.
6 In this way it is possible to produce a propylene polymer having 7 an Mn of about sno to about 1,000,000 which is similar to mono-8 disperse polymers, said propylene polymer being characterized by that9 the carbonyl group is introduced into the terminal of almost every polymer chain.
11 Effect of the 7nvention 12 The process of this invention permits the efficient production of 13 a propylene polymer in which the terminals of the polymer chains are 14 carbonylated almost one-hundred percent selectively, the production involving no chain transfer reactions nor termination reactions. The 16 polymer will rind use as a compatibilizing agent, surface modifier, 17 viscosity index improver, and drag reducer.
18 Examples 19 The invention is described in more detail with reference to the following examples. The following methods were used to characterize 21 the resulting polymers.
Z2~ ~ ~Molecular weight and molecular weight distribution: Measured by 23 the use of GPC (gel permeation chromatography), Model 150, made by 24~ Waters Co., Ltd. The solvent was trichlorobenzene. Measuring conditions: 135C, solvent flow rate = 1.0 ml/min, and sample 26 concentration = 0.15 wt/vol%. The column was GMH6 made by Toyo Soda 27 M~g. Co., Ltd. A calibration curve for polystyrene was made for the 28~ standard sample of monodisperse polystyrene available from Waters 29 Co., Ltd. On the basis of this c~libration curve, a calibration 30~curve for the polypropylene was made according to the universal ;~ 31~ met~hod.
32 ~ ~ Uetermination of carbonyl groups and methyl groups in propylene:
33 Determined by the use of infrared spectrophotometer, Model A-3, made 34~ by Nippon Bunko Kogyo Co., Ltd., on the sample polymer formed into a 75 ~m thick film.
~36 Content~of propylene ln ethylene-propylene random copolymer:
37 Determined by means~of 13C NMR analysis. Model XL-200 with PFT
38 (pulse Fourier transform unit), made by Varian Co., Ltd.
.~, - 6 ~Z64397 1 Conditions: 50 MHz, 120C, pulse width 8.2 ~s ~/3, pulse interval 4 2 seconds, and integration 5000 times. The sample was dissolved in a 3 2:1 mixed solvent of trichlorobenzene and heavy benzene.
4 E~amp1e 1 In a 200 ml autoclave, with atmosphere therein completely 6 replaced with nitrogen gas, was placed toluene as a solvent, followed 7 by cooling to -78C. At this temperature, 35 g (0083 mol) of 8 propylene was added and dissolved in toluene. Then, 5 mmol of 9 Al(C2H5)2Cl in toluene solution and 0.5 mmol of V(acetyl-acetonate)3 in toluene solution were added to start polymerization 11 at -78C. Thirty minutes later, carbon mono~ide was fed into t~e 12 autoclave under 30 atm, and the reaction was carried out for 1 hour 13 with stirring. After completion of the reaction, carbon dioxide gas 14 was purged, and the reaction solution was poured into ethanol which had been cooled to -78C to precipitate the polymer. The resulting 16 polymer was washed five times with 500 ml of ethanol and dried. The 17 polymer (0.12 g) thus obtained was found to have a molecular weight 18 and molecular weight distribution of ~n = 2,800 and Mw/Mn = 1.2, 19 respectively. It was a nearly monodisperse polymer.
Upon examination of the resulting polymer for infrared absorption 2~ ~spectrum, an absorption peak was observed at 1,723 cm 1 which is 22 attributable to d carbonyl group. This indicates that carbonyl 23 groups have been introduced into the polymer.
24 The number of carbonyl groups introduced into one molecule of the polymer chain was calcu1ated from the following formula.
26 / 41 \ / Al723 ~ 1 Mn 27 ~C0] =~ ~ J ~ Al460 ) ~ 42 ~
28 where 41 and 440 denote the molar absorptivity at 1,460 cm l and 29 1,723 cm l attributable to polypropylene and carbonyl group, 30 respectively, A1723 and A)460 denote the absorption intensity at 31 1,723 cm l and 1460 cm 1, respectively~ ~n denotes the number-32 average molecular weight; and 42 denotes the molecular weight of 33 propylene.
34 ~ ~ The calcu1ated value of [C0] was l.0, which apparently indicates 35 that each molecule of the polymer has one molecule of carbonyl group.
:
. , 1 Examples 2 to 5 _ 2 The polymerization of propylene and the carbonylation reaction 3 were performed 7n the same manner as in Examp1e 1, except that the 4 feed time and pressure of carbon monoxide were changed as shown in Table 1. The results are shown in Table 1.
6 Table 1`
7 CO feed CO pres Polymer Molecular 8 time sure yield weight 9 Example ~hour) (atm) (g) Mn ~w/~n [CO] value 1 0.5 30 0.12 2,800 1.2 1.0 11 2 1.0 1 0.48 5,800 1.2 0.9 12 3 1.0 30 0.44 5,9~0 1.2 1.2 13 4 2.0 30 0.94 ll,SOO 1.2 1.3 14 5 20.0 30 9.42 120,000 1.3 1.2 . .
15 Example 6 16 The polymerization of propylene and the carbonylation reaction were 17 performed in the same manner as in Example 3, except that carbon 18 monoxide was replaced by carbon dioxide at a pressure of 1 atm.
19 There was obtained a polymer having a CCO] value of 0.8.
20 Example 7 21 ~ In a 1 liter autoclave, with atmosphere therein completely 22 replaced with nitrogen gas, was placed toluene as a solvent, followed 23 by cooling to -78C. At this temperature, 180 9 (4.2 mol) of 24 propylene was added and dissolved in toluene. Then, 0.1 mol of 25 Al(C2H5)2Cl in toluene solution, 5 mmol of V(acetyl-26 acetonate)3 in toluene solution, and 2.5 mmol of anisole were added ~27 one after another to start the preliminary polymerization at -78C.
28 One~hour later, nitrogen was purged and 4.6 9 (0.16 mol) of ethylene 29 was introduced. The copolymerization of ethylene and propylene was 30 carried out at -78C for 5 minute under a nitrogen atmosphere, 31 whereby~a living ethylene-propylene random copolymer was prepared.
32 (Ethylene-propylene random copolymer is abbreviated as EPR herein-33 after.~ Subsequently, carbon monoxide was fed at -78C, and the 34 reaction was carried out for 1 hour with stirring while keeping the 35 pressure of carbon monoxide at 1 atm. Then 9.1 9 of the desired 36 polymer was obtained in the same manner as in Example 1. This 2643~'o 1 polymer was examined for molecular weight, molecular weight distri-2 bution, propylene content, and ~C0] value. The results are shown in 3 Table 2.
4 Examples 8 and 9 The synthesis of living EPR and the carbonylation reaction were 6 performed in the same manner as in Example 7, except that the 7 synthesis of living EPR was carried out under the di~ferent condi-8 tions. The results are shown in Table 2.
9 Table 2 - .. ...
Polymer Molecular Propylene 11 yield weight content 12 ExamPle (g) Mn Mw/Mn tw~%) [C0~ value~
13 7 9.1 ~7,200 1.2 50 0.8 14 8 14.3 43,000 1.3 50 1.2 15 9 I.03 7,500 1.2 75 1.1 16 Example 10 17 A living polypropylene was obtained in the same manner as in 18 Example 7, except that the time for homopolymerization of propylene 19 was changed to 10 hours. Ethylene was fed in the same manner as in 20 Example 7 to carry out copolymerization, whereby a living block 21 copolymer composed of Polypropylene segments and EPR segments was 22 synthesized. Subsequently, it was reacted with carbon monoxide in 23 the same manner as in Example 7 to give 15.8 g of polymer having the 24 following characteristic values.
~n 50,000 ~Mn 23,000 for polypropylene segments and Mn 27,000 for 26 EPR segments) 27 M~/Mn 1.20 28 ['0] value 1.3 :
14 Problems to be solved bv the invention It is an object of the present invention to provide a nearly 16 monodisperse propylene polymer in which every polymer chain has a 17 carbonyl group.
18 The present inventors had previously found that a nearly mono-;19 disperse living polypropylene is formed when propylene is polymerized using a catalyst composed of V(acetylacetonate)3 and 21 Al(C2H5)2Cl. [Makromol. Chem. 180, 1359 (1979), and 22 Macromolecu1es., 12, 814 (1979)]
23 The present inventors found that when this living polypropylene 24 is reacted with a carbonylating agent such as carbon monoxide, carbonyl groups can be introduced into the terminals of almost all 26 the polymer chains. The present invention was completed based on ; 27 this finding.
28 Means to solve the problems 29 Summary of th _ nvention ~ The gist of the invention resides in a process for produc;ng a 31 propylene polymer having a carbonyl group at the terminal, said 32 process comprising polymerizing propylene to give a living propylene 33 ~polymer in the presence of a catalyst composed of beta-diketone 34 vanadium chelate and an aluminum compound~represented by the formula R2AlX (where R is a hydrocarbon group having 1 to 8 carbon atoms ,,' :
, ~ .
lZ~4;31~7 1 and X is a halogen atom), and reacting the living propylene palymer 2 with a carbonylating agent.
3 Catalyst .
4 The catalyst system used in this invention is composed of beta-diketone vanadium chelate (referred to as the vanadium compound 6 hereinafter) represented by the formula below:
8 1R\ ~CH \ /R2 ~
lo ~ d, ~o ) 3 11 (where Rl and R2 are the same or different alkyl groups or aryl 12 groups) and an aluminum compound represented by the formula R2AlX
13 (where R is a hydrocarbon group having from 1 to 8 carbon atoms, 14 especially an alkyl group or aryl group, and X is a halogen atom).
Examples of the vanadium compound include V(acetylacetonate)3, 16 V(benzoylacetylacetonate)3, and V(dibenzoylmethanate)3. Examples 17 Of the aluminum compound include dimethyl alurninum chloride, diethyl 18 aluminum chloride, diethyl aluminum bromide, and diisobutyl alum;num 19 chloride.
Production of living propylene ~olymer 21 Thé living propylene polymer is obtained by homopolymerizing 22 propylene or copolymerizing propylene with ethylene or an alpha-23 olefin~having 4 or more carbon atoms, desirably from 4 to 12 carbon~
24 atoms and preferably 1 to 6 carbon atoms (such as l-butene, l-hexene, and 4-methyl-1-pentene, excluding propylene) in the presence of the 26 above-mentioned catalyst.
27 The copolymerization of propylene with ethylene or an alpha-28 olefin (referred to as comonomer hereinafter) is accomplished by 29~ random copolymerization of propylene dnd comonomer, block copoly-~30 merization of propylene homopolymer and comonomer, or block copoly-31~ merization~ of a propylene-comonomer random copolymer and ethylene or 32 an alpha-olefin having 3 or more carbon atoms, desirably 3 to 12 33~ carbon dtoms~and preferably 3 to 6 carbon atoms.
34 ~ ~ ~The polymer~ization reaction should preferably be carried out in a solvent which is immUne to the polymerization reaction and is liquid 36 ~at the time of polymerization~ Examples~of the solvent include 37 saturated aliPhatic hydrocarbons~(such as propane, butane, pentane, 38 hexane~ and heptane), saturated alicyclic hydrocarbons (such as ~2~ 97 1 cyclopropane and cyclohexane), and aromatic hydrocarbons (such as 2 benzene, toluene, and xylene).
3 The homopolymerization of propylene or the random copolymeriza-4 tion of propylene with comonomer should preferably be accomplished by adding in succession a solution of the aluminum compound and a solu-6 tion of the vanadiu~ compound to a solution of propylene or a solu-7 tion of propylene and comonomer dissolved in a solvent.
8 In the homopolymerization of propylene or the random copolymeri-9 zation of propylene with comonomer, the polymerization catalyst is used in such an amount that the vanadium compound is 1 x 10 4 to 11 0.01 mol, Preferably 5 x 10 4 to 5 x 10 3 mol, and the organo-12 aluminum compound is~l x 10 3 to O.l mol, preferably 5 x lQ 3 to 13 0.01 mol, for 1 mol of propylene or 1 mol of propylene and comonomer 14 in all. In addition, the amount of the organoaluminum compound should be 5 to 25 mol for 1 mol of the vanadium compound.
16 The molecular weight and yield of the living propylene homo-17 polymer or the living propylene random copolymer may be adjusted by 18 changing the reaction temperature and reaction time. If the poly-19 merization temperature is low, particularly below -50C, the resulting polymer has a molecular weight distribution which is close 21 to;that of monodisperse polymer.~ Polymerization at -65C or below 2Z provides a~living polymer hav~ng~ and Mw/Mn of 1.05 to 1.40 (where Mw~
23~is the weight-average molecular~weight and Mn is the number-average 24 ~molecular weight). ~ ~
~The;polymerizatian reaction permits the~use of a reaction 26 accelerator such as anisole, water, oxygen, alcohols (methanol, 27 ethanol, isopropanol, etc.), and esters (ethyl benzoate, ethyl 28 acetate, etc.). The reaction accelerator is used usually in an 29 amount of 0.1 to 2 mol for 1 mol of the vanadium compound.
30~ The~comonomer in the living random copolymer composed o~ propy-3~ ene and comonomer usually accounts for uP to 80 wt%. This~value can 32 be~adjusted by~changing the amount of comonomer used at the time of 33~ ving polymerizatlon. When the amount oF~comonomer, especially 34 ethylene, is increased, the resulting copolymer has a broad molecular 35~ wei~ght~distribution.~ This is undesirable.~;Where a living copolymer 36 of high~ethylene content with a narrow molecular weight distribution 37~is to be~produced, polymerization should preferably be performed in 38 the following manner. That is, living polymerization for a very ^'' : :
.
~2iEi4397 1 small amount of propylene should be performed before living copoly-2 merization for propylene and ethylene. This permits the introductlon 3 of a large amount of ethylene into the copolymer, while keeping the 4 molecular weight distribution of the living copolymer narrow. This polymerization method is illustrated with an example below. At 6 first, Propylene alone is supplied to the polymerization system to 7 produce living polypropylene having a number-average molecular weight 8 of preferably 500 to 2,000. Then, ethylene is supplied in the 9 presence of a large amount of unreacted propylene monomer to continue living Polymerization until the random copolymerization of ethylene 11 and propylene comes to an end.
12 The thus obtained living homopolymer of propylene or living 13 random copolymer of propylene and comonomer is made into a living 14 block copolymer by living polymerization with a comonomer. This is accomplished by supplying a comonomer (which is dif~erent from the 16 one used in the living random copolymerization with propy1ene) to the 17 system in which the living homopolymer or living random copolymer and 18 propylene are present, and performing living polymerization in the 19 same manner as mentioned above. Usually, the comonomer accounts for up to 50 wt% in the block portion of the block copolymer. This 21 amount can be adjusted by changing the amount of the comonomer used 22 at the time of block copolymerization.
23 ~ According to the above-mentioned method, it is possible to 24 produce a living proPylene polymer having a number-average molecular 25 ~weight~(in terms of propylene [to be repeated hereinafter]) of about 26 500 to about 1,000,000 wh;ch is similar to monodisperse polymers.
27 Carbonylatin~ process 28 When the living propylene polymer comes into contact with a 29 carbonylating agent, the living polymerization stops and, at the same time, the carbonylation proceeds so that a carbonyl group is intro-31 duced into the terminal of the polymer chain. Thus the carbonylation 32 o~ the living propylene polymer is accomplished.
33 ~ Examples of the carbonylating agent that can be used include 34 carbon monoxide and carbon dioxide.~ They may be used as such or after dilution with an inert gas or 1iquid.
36 The reaction is performed at atmospheric pressure or under pres-37 ~sure, at a temperature of -100C to +100C, preferably -80C to O~C, 38 for 5 minutes to 10 hours.
' : ~
_ 5 _ ~ ~43~ `
1 Incidentally, "carbony1ation" as used herein means the intro-2 duction of the ~C=O bond into the Polymer molecule.
3 The propylene polymer which has undergone carbonylation is 4 separated and recovered by the addition of alcohol (methanol, ethanol, etc.) to the reaction system.
6 In this way it is possible to produce a propylene polymer having 7 an Mn of about sno to about 1,000,000 which is similar to mono-8 disperse polymers, said propylene polymer being characterized by that9 the carbonyl group is introduced into the terminal of almost every polymer chain.
11 Effect of the 7nvention 12 The process of this invention permits the efficient production of 13 a propylene polymer in which the terminals of the polymer chains are 14 carbonylated almost one-hundred percent selectively, the production involving no chain transfer reactions nor termination reactions. The 16 polymer will rind use as a compatibilizing agent, surface modifier, 17 viscosity index improver, and drag reducer.
18 Examples 19 The invention is described in more detail with reference to the following examples. The following methods were used to characterize 21 the resulting polymers.
Z2~ ~ ~Molecular weight and molecular weight distribution: Measured by 23 the use of GPC (gel permeation chromatography), Model 150, made by 24~ Waters Co., Ltd. The solvent was trichlorobenzene. Measuring conditions: 135C, solvent flow rate = 1.0 ml/min, and sample 26 concentration = 0.15 wt/vol%. The column was GMH6 made by Toyo Soda 27 M~g. Co., Ltd. A calibration curve for polystyrene was made for the 28~ standard sample of monodisperse polystyrene available from Waters 29 Co., Ltd. On the basis of this c~libration curve, a calibration 30~curve for the polypropylene was made according to the universal ;~ 31~ met~hod.
32 ~ ~ Uetermination of carbonyl groups and methyl groups in propylene:
33 Determined by the use of infrared spectrophotometer, Model A-3, made 34~ by Nippon Bunko Kogyo Co., Ltd., on the sample polymer formed into a 75 ~m thick film.
~36 Content~of propylene ln ethylene-propylene random copolymer:
37 Determined by means~of 13C NMR analysis. Model XL-200 with PFT
38 (pulse Fourier transform unit), made by Varian Co., Ltd.
.~, - 6 ~Z64397 1 Conditions: 50 MHz, 120C, pulse width 8.2 ~s ~/3, pulse interval 4 2 seconds, and integration 5000 times. The sample was dissolved in a 3 2:1 mixed solvent of trichlorobenzene and heavy benzene.
4 E~amp1e 1 In a 200 ml autoclave, with atmosphere therein completely 6 replaced with nitrogen gas, was placed toluene as a solvent, followed 7 by cooling to -78C. At this temperature, 35 g (0083 mol) of 8 propylene was added and dissolved in toluene. Then, 5 mmol of 9 Al(C2H5)2Cl in toluene solution and 0.5 mmol of V(acetyl-acetonate)3 in toluene solution were added to start polymerization 11 at -78C. Thirty minutes later, carbon mono~ide was fed into t~e 12 autoclave under 30 atm, and the reaction was carried out for 1 hour 13 with stirring. After completion of the reaction, carbon dioxide gas 14 was purged, and the reaction solution was poured into ethanol which had been cooled to -78C to precipitate the polymer. The resulting 16 polymer was washed five times with 500 ml of ethanol and dried. The 17 polymer (0.12 g) thus obtained was found to have a molecular weight 18 and molecular weight distribution of ~n = 2,800 and Mw/Mn = 1.2, 19 respectively. It was a nearly monodisperse polymer.
Upon examination of the resulting polymer for infrared absorption 2~ ~spectrum, an absorption peak was observed at 1,723 cm 1 which is 22 attributable to d carbonyl group. This indicates that carbonyl 23 groups have been introduced into the polymer.
24 The number of carbonyl groups introduced into one molecule of the polymer chain was calcu1ated from the following formula.
26 / 41 \ / Al723 ~ 1 Mn 27 ~C0] =~ ~ J ~ Al460 ) ~ 42 ~
28 where 41 and 440 denote the molar absorptivity at 1,460 cm l and 29 1,723 cm l attributable to polypropylene and carbonyl group, 30 respectively, A1723 and A)460 denote the absorption intensity at 31 1,723 cm l and 1460 cm 1, respectively~ ~n denotes the number-32 average molecular weight; and 42 denotes the molecular weight of 33 propylene.
34 ~ ~ The calcu1ated value of [C0] was l.0, which apparently indicates 35 that each molecule of the polymer has one molecule of carbonyl group.
:
. , 1 Examples 2 to 5 _ 2 The polymerization of propylene and the carbonylation reaction 3 were performed 7n the same manner as in Examp1e 1, except that the 4 feed time and pressure of carbon monoxide were changed as shown in Table 1. The results are shown in Table 1.
6 Table 1`
7 CO feed CO pres Polymer Molecular 8 time sure yield weight 9 Example ~hour) (atm) (g) Mn ~w/~n [CO] value 1 0.5 30 0.12 2,800 1.2 1.0 11 2 1.0 1 0.48 5,800 1.2 0.9 12 3 1.0 30 0.44 5,9~0 1.2 1.2 13 4 2.0 30 0.94 ll,SOO 1.2 1.3 14 5 20.0 30 9.42 120,000 1.3 1.2 . .
15 Example 6 16 The polymerization of propylene and the carbonylation reaction were 17 performed in the same manner as in Example 3, except that carbon 18 monoxide was replaced by carbon dioxide at a pressure of 1 atm.
19 There was obtained a polymer having a CCO] value of 0.8.
20 Example 7 21 ~ In a 1 liter autoclave, with atmosphere therein completely 22 replaced with nitrogen gas, was placed toluene as a solvent, followed 23 by cooling to -78C. At this temperature, 180 9 (4.2 mol) of 24 propylene was added and dissolved in toluene. Then, 0.1 mol of 25 Al(C2H5)2Cl in toluene solution, 5 mmol of V(acetyl-26 acetonate)3 in toluene solution, and 2.5 mmol of anisole were added ~27 one after another to start the preliminary polymerization at -78C.
28 One~hour later, nitrogen was purged and 4.6 9 (0.16 mol) of ethylene 29 was introduced. The copolymerization of ethylene and propylene was 30 carried out at -78C for 5 minute under a nitrogen atmosphere, 31 whereby~a living ethylene-propylene random copolymer was prepared.
32 (Ethylene-propylene random copolymer is abbreviated as EPR herein-33 after.~ Subsequently, carbon monoxide was fed at -78C, and the 34 reaction was carried out for 1 hour with stirring while keeping the 35 pressure of carbon monoxide at 1 atm. Then 9.1 9 of the desired 36 polymer was obtained in the same manner as in Example 1. This 2643~'o 1 polymer was examined for molecular weight, molecular weight distri-2 bution, propylene content, and ~C0] value. The results are shown in 3 Table 2.
4 Examples 8 and 9 The synthesis of living EPR and the carbonylation reaction were 6 performed in the same manner as in Example 7, except that the 7 synthesis of living EPR was carried out under the di~ferent condi-8 tions. The results are shown in Table 2.
9 Table 2 - .. ...
Polymer Molecular Propylene 11 yield weight content 12 ExamPle (g) Mn Mw/Mn tw~%) [C0~ value~
13 7 9.1 ~7,200 1.2 50 0.8 14 8 14.3 43,000 1.3 50 1.2 15 9 I.03 7,500 1.2 75 1.1 16 Example 10 17 A living polypropylene was obtained in the same manner as in 18 Example 7, except that the time for homopolymerization of propylene 19 was changed to 10 hours. Ethylene was fed in the same manner as in 20 Example 7 to carry out copolymerization, whereby a living block 21 copolymer composed of Polypropylene segments and EPR segments was 22 synthesized. Subsequently, it was reacted with carbon monoxide in 23 the same manner as in Example 7 to give 15.8 g of polymer having the 24 following characteristic values.
~n 50,000 ~Mn 23,000 for polypropylene segments and Mn 27,000 for 26 EPR segments) 27 M~/Mn 1.20 28 ['0] value 1.3 :
Claims (12)
PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An essentially monodisperse propylene polymer in which essentially every polymer chain is terminated with a carbonyl group.
2. The propylene polymer of claim 1 wherein the Mw/Mn is about 1 to 1.40.
3. The propylene polymer of claim 2 wherein the Mn is in the range of 500 to 1,000,000.
4. The propylene polymer of claim 1 which is homopoly-propylene.
5. The propylene polymer of claim 1 which is a random copolymer of propylene and ethylene or a alpha-olefin having 4 or more carbon atoms.
6. The propylene polymer of claim 1 which is a block polymer comprising homopolypropylene or co-polypropylene.
7. A process for producing essentially monodisperse propylene polymers being chain terminated with a carbonyl group, said prooess comprising polymerizing propylene to give a living propylene polymer in the presence of a catalyst system comprising a beta-diketone vanadium chelate and an aluminum alkyl halide represented by the formula R2AlX wherein R is a hydrocarbyl group having 1 to 8 carbon atoms and X is halogen, and reacting the living propylene polymer with a carbonylating agent.
8. The process in accordance with claim 7 comprising homo-polymerizing propylene.
9. The process in accordance with claim 7 wherein propylene is copolymerized with ethylene or an alpha-olefin having 4 or more carbon atoms to yield living random copolymer.
10. The process of claim 9 wherein the living random copolymer is further contacted with ethylene or an alpha-olefin having 3 or more carbon atoms to yield a living block polymer.
11. The process of claim 8 wherein living homopolypropylene is further contacted with ethylene or an alpha-olefin having 4 or more carbon atoms to yield a living block polymer.
12. The process of claim 7 wherein the vanadium chelate concentration to propylene or propylene comonomer concentration is in the range of 1 x 10-4 to 0.01 to about 1 mol and the aluminum alkyl to vanadium chelate mol ratio is in the range of about 5 - 25 to about 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59273121A JPS61151202A (en) | 1984-12-26 | 1984-12-26 | Production of propylene polymer |
| JP273,121/84 | 1984-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1264397A true CA1264397A (en) | 1990-01-09 |
Family
ID=17523419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000496993A Expired CA1264397A (en) | 1984-12-26 | 1985-12-05 | Process for producing propylene polymer |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4717755A (en) |
| EP (1) | EP0188915A3 (en) |
| JP (1) | JPS61151202A (en) |
| AU (1) | AU588561B2 (en) |
| CA (1) | CA1264397A (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06104687B2 (en) * | 1985-06-18 | 1994-12-21 | 東燃株式会社 | Olefin polymerization catalyst |
| DE3618378A1 (en) * | 1986-05-31 | 1987-12-03 | Bayer Ag | POLYOLEFIN CARBONIC ACIDS, THEIR PRODUCTION AND THEIR USE FOR THE PRODUCTION OF POLYOLEFIN POLYCARBONATE BLOCK COPOLYMERS |
| US4845158A (en) * | 1987-08-10 | 1989-07-04 | General Electric Company | Telechelic polyisobutylene and block copolymer derivatives |
| US5223465A (en) * | 1990-03-16 | 1993-06-29 | Tonen Corporation | Olefin polymerization catalyst |
| JP2930371B2 (en) * | 1990-06-08 | 1999-08-03 | 東燃株式会社 | Both-end-modified ethylene polymer and method for producing the same |
| DE4030399A1 (en) * | 1990-09-26 | 1992-04-02 | Basf Ag | Polymers and oligomers of propylene¨ with functional end-gps. - produced by reacting hetero-atom. cpds. with corresp. polymers or oligomers contg. unsatd.-olefinic end-gps. |
| EP0529102B1 (en) * | 1991-03-15 | 1998-10-28 | Tonen Corporation | Terminally modified polyolefin |
| US5382634A (en) * | 1991-03-15 | 1995-01-17 | Tonen Corporation | Terminal-modifed polyolefins |
| DE69312821T2 (en) * | 1992-02-10 | 1997-11-27 | Tonen Corp | FINALLY MODIFIED POLYOLEFIN |
| US5646332A (en) | 1992-12-17 | 1997-07-08 | Exxon Chemical Patents Inc. | Batch Koch carbonylation process |
| US5650536A (en) | 1992-12-17 | 1997-07-22 | Exxon Chemical Patents Inc. | Continuous process for production of functionalized olefins |
| IL107810A0 (en) | 1992-12-17 | 1994-02-27 | Exxon Chemical Patents Inc | Functionalized polymers and processes for the preparation thereof |
| US5643859A (en) | 1992-12-17 | 1997-07-01 | Exxon Chemical Patents Inc. | Derivatives of polyamines with one primary amine and secondary of tertiary amines |
| US5674950A (en) * | 1994-03-07 | 1997-10-07 | Exxon Chemical Patents Inc. | Polymers having terminal hydroxyl aldehyde, or alkylamino substitutents and derivatives thereof |
| US5691422A (en) * | 1994-03-07 | 1997-11-25 | Exxon Chemical Patents Inc. | Saturated polyolefins having terminal aldehyde or hydroxy substituents and derivatives thereof |
| CA2157400C (en) * | 1994-04-11 | 2003-07-29 | Takashi Ueda | Process for preparing propylene polymer composition, and propylene polymer composition |
| US5767046A (en) | 1994-06-17 | 1998-06-16 | Exxon Chemical Company | Functionalized additives useful in two-cycle engines |
| JP3719727B2 (en) * | 1994-10-13 | 2005-11-24 | 三井化学株式会社 | Method for producing polyolefin having functional group at terminal |
| JP3947832B2 (en) * | 1997-09-09 | 2007-07-25 | 独立行政法人産業技術総合研究所 | Olefin living polymer production catalyst and method for producing the same |
| EP2267042B1 (en) * | 2000-01-26 | 2015-06-10 | Mitsui Chemicals, Inc. | Olefin diblock copolymer of very low polydispersity and process for preparing the same |
| CN100386349C (en) * | 2006-05-25 | 2008-05-07 | 中国科学院长春应用化学研究所 | Beta-diketo mono imine vanadium olefinic polymerization catalyst, and its preparing method and use |
| CN101205265B (en) * | 2007-12-06 | 2010-10-06 | 中国科学院长春应用化学研究所 | Single-salicylaldehyde imine vanadium olefin polymerization catalyst as well as preparation method and use thereof |
| EP3037437A1 (en) * | 2014-12-23 | 2016-06-29 | SABIC Global Technologies B.V. | Process for the preparation of a polyolefin having one or multiple end-functionalized branches. |
| EP3037438A1 (en) | 2014-12-23 | 2016-06-29 | SABIC Global Technologies B.V. | Process for the preparation of a branched polyolefin |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173903A (en) * | 1960-08-25 | 1965-03-16 | Hercules Powder Co Ltd | Copolymers of ethylene and propylene |
| DE1520922B2 (en) * | 1963-09-12 | 1972-05-18 | Veba-Chemie Ag, 4660 Gelsenkirchen-Buer | PROCESS FOR MANUFACTURING PARAFFINCARBONIC ACIDS |
| DE1520928A1 (en) * | 1964-01-21 | 1970-02-12 | Veba Chemie Ag | Process for the production of wax carboxylic acids |
| US3528958A (en) * | 1967-03-16 | 1970-09-15 | Sinclair Koppers Co | Modified olefin polymers of improved properties |
| CA994950A (en) * | 1970-05-08 | 1976-08-10 | James E. Guillet | Photodegradable polypropylene compositions |
| FR2402668A1 (en) * | 1977-09-12 | 1979-04-06 | Solvay | PROCESS FOR SEPARATING POLYOLEFINS MANUFACTURED AT LOW PRESSURE |
| US4326048A (en) * | 1980-05-27 | 1982-04-20 | Standard Oil Company (Indiana) | Method for emergency shutdown of gas phase polyolefin reactor |
| US4547555A (en) * | 1983-09-01 | 1985-10-15 | Mobil Oil Corporation | Method for rapid kill gas injection to gas phase polymerization reactors during power failures |
-
1984
- 1984-12-26 JP JP59273121A patent/JPS61151202A/en active Granted
-
1985
- 1985-12-05 CA CA000496993A patent/CA1264397A/en not_active Expired
- 1985-12-19 US US06/810,638 patent/US4717755A/en not_active Expired - Fee Related
- 1985-12-20 EP EP85309380A patent/EP0188915A3/en not_active Withdrawn
- 1985-12-24 AU AU51669/85A patent/AU588561B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP0188915A2 (en) | 1986-07-30 |
| AU5166985A (en) | 1986-07-03 |
| JPS61151202A (en) | 1986-07-09 |
| JPH0579085B2 (en) | 1993-11-01 |
| US4717755A (en) | 1988-01-05 |
| AU588561B2 (en) | 1989-09-21 |
| EP0188915A3 (en) | 1989-05-03 |
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