CA2002992A1 - Process for the in situ blending of polymers - Google Patents

Process for the in situ blending of polymers

Info

Publication number
CA2002992A1
CA2002992A1 CA2002992A CA2002992A CA2002992A1 CA 2002992 A1 CA2002992 A1 CA 2002992A1 CA 2002992 A CA2002992 A CA 2002992A CA 2002992 A CA2002992 A CA 2002992A CA 2002992 A1 CA2002992 A1 CA 2002992A1
Authority
CA
Canada
Prior art keywords
reactor
ethylene
alpha
olefin
copolymer
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.)
Granted
Application number
CA2002992A
Other languages
French (fr)
Other versions
CA2002992C (en
Inventor
Kiu Hee Lee
Frederick John Karol
Sari Beth Samuels
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Carbide Chemicals and Plastics Technology LLC
Original Assignee
Kiu Hee Lee
Frederick John Karol
Sari Beth Samuels
Union Carbide Corporation
Union Carbide Chemicals & Plastics Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kiu Hee Lee, Frederick John Karol, Sari Beth Samuels, Union Carbide Corporation, Union Carbide Chemicals & Plastics Corporation filed Critical Kiu Hee Lee
Publication of CA2002992A1 publication Critical patent/CA2002992A1/en
Application granted granted Critical
Publication of CA2002992C publication Critical patent/CA2002992C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F297/00Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
    • C08F297/06Macromolecular 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
    • C08F297/08Macromolecular 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
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/34Polymerisation in gaseous state
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F210/00Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/16Copolymers of ethene with alpha-alkenes, e.g. EP rubbers

Abstract

A process for the in situ blending of polymers comprising continuously contacting, under polymerization conditions, a mixture of ethylene and at least one alpha-olefin having at least 3 carbon atoms with a catalyst in at least two fluidized bed reactors connected in series, said catalyst comprising:
(i) a complex consisting essentially of magnesium titanium, a halogen, and an electron donor;
(ii) at least one activator compound for the complex having the formula AlR"eX'fHg wherein X' is Cl or OR'''; R" and R''' are saturated aliphatic hydrocarbon radicals having 1 to 14 carbon atoms and are alike or different; f is 0 to 1.5; g is 0 or 1; and e + f + g = 3; and (iii) a hydrocarbyl aluminum cocatalyst, the polymerization conditions being such that ethylene copolymer having a high melt index in the range of about 0.1 to about 1000 grams per 10 minutes is formed in at least one reactor and ethylene copolymer having a low melt index in the range of about 0.001 to about 1.0 gram per 10 minutes is formed in at least one other reactor, each copolymer having a density of about 0.860 to about 0.965 gram per cubic centimeter and a melt flow ratio in the range of about 22 to about 70, and being admixed with active catalyst, with the proviso that:
(a) the mixture of copolymer of ethylene and active catalyst formed in one reactor in the series is transferred to the immediately succeeding reactor in the series;
(b) in the reactor in which the low melt index copolymer is made:
(1) the alpha-olefin is present in a ratio of about 0.1 to about 3.5 mole of alpha-olefin per mole of ethylene; and (2) hydrogen is optionally present in a ratio of about 0.001 to about 0.5 mole of hydrogen per mole of combined ethylene and alpha-olefin;
(c) in the reactor in which the high melt index copolymer is made:
(1) the alpha-olefin is present in a ratio of about 0.1 to about 3.5 mole of alpha-olefin per mole of ethylene; and (2) hydrogen is present in a ratio of about 0.5 to about 3 moles of hydrogen per mole of combined ethylene and alpha-olefin;
and (d) additional hydrocarbyl aluminum cocatalyst is introduced into each reactor in the series following the first reactor in an amount sufficient to restore the level of the activity of the catalyst transferred from the preceding reactor in the series to about the initial level of activity in the first reactor.
CA002002992A 1988-11-16 1989-11-15 Process for the in situ blending of polymers Expired - Lifetime CA2002992C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US271,639 1988-11-16
US07/271,639 US5047468A (en) 1988-11-16 1988-11-16 Process for the in situ blending of polymers

Publications (2)

Publication Number Publication Date
CA2002992A1 true CA2002992A1 (en) 1990-05-16
CA2002992C CA2002992C (en) 1995-11-07

Family

ID=23036442

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002002992A Expired - Lifetime CA2002992C (en) 1988-11-16 1989-11-15 Process for the in situ blending of polymers

Country Status (25)

Country Link
US (1) US5047468A (en)
EP (1) EP0369436B1 (en)
JP (1) JPH07116256B2 (en)
KR (1) KR950000037B1 (en)
CN (1) CN1040219C (en)
AT (1) ATE138087T1 (en)
AU (1) AU619357B2 (en)
BR (1) BR8905803A (en)
CA (1) CA2002992C (en)
CZ (1) CZ282728B6 (en)
DE (1) DE68926490T2 (en)
EG (1) EG18942A (en)
ES (1) ES2087067T3 (en)
FI (1) FI895432A0 (en)
GR (1) GR3019960T3 (en)
HU (1) HU206508B (en)
MY (1) MY106027A (en)
NO (1) NO173242C (en)
NZ (1) NZ231393A (en)
PH (1) PH26989A (en)
PL (1) PL163483B1 (en)
PT (1) PT92322B (en)
SK (1) SK646389A3 (en)
TR (1) TR24887A (en)
ZA (1) ZA898724B (en)

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Also Published As

Publication number Publication date
HU895915D0 (en) 1990-02-28
DE68926490D1 (en) 1996-06-20
JPH07116256B2 (en) 1995-12-13
NZ231393A (en) 1991-02-26
MY106027A (en) 1995-02-28
AU4469989A (en) 1990-05-24
ATE138087T1 (en) 1996-06-15
EP0369436B1 (en) 1996-05-15
BR8905803A (en) 1990-06-12
EP0369436A2 (en) 1990-05-23
CZ282728B6 (en) 1997-09-17
HU206508B (en) 1992-11-30
EP0369436A3 (en) 1991-07-03
US5047468A (en) 1991-09-10
ES2087067T3 (en) 1996-07-16
NO173242B (en) 1993-08-09
CN1040219C (en) 1998-10-14
KR950000037B1 (en) 1995-01-07
FI895432A0 (en) 1989-11-15
CN1043721A (en) 1990-07-11
PT92322B (en) 1996-06-28
DE68926490T2 (en) 1996-10-02
CA2002992C (en) 1995-11-07
GR3019960T3 (en) 1996-08-31
TR24887A (en) 1992-07-20
PL163483B1 (en) 1994-04-29
SK280092B6 (en) 1999-08-06
PT92322A (en) 1990-05-31
JPH02199106A (en) 1990-08-07
HUT53380A (en) 1990-10-28
NO173242C (en) 1993-11-17
SK646389A3 (en) 1999-08-06
PH26989A (en) 1992-12-28
ZA898724B (en) 1990-08-29
KR900007885A (en) 1990-06-02
AU619357B2 (en) 1992-01-23
EG18942A (en) 1994-06-30
NO894548D0 (en) 1989-11-15
NO894548L (en) 1990-05-18
CZ646389A3 (en) 1997-06-11

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