CA2002992A1 - Process for the in situ blending of polymers - Google Patents
Process for the in situ blending of polymersInfo
- 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
Links
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
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
-
- 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
-
- 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
- C08F2/00—Processes of polymerisation
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/34—Polymerisation in gaseous state
-
- 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers 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.
(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.
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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US6538080B1 (en) | 1990-07-03 | 2003-03-25 | Bp Chemicals Limited | Gas phase polymerization of olefins |
US5688865A (en) * | 1991-03-06 | 1997-11-18 | Mobil Oil Corporation | Process and system for preventing pressure tap fouling in tandem polymerization reactors |
US6194520B1 (en) | 1991-03-06 | 2001-02-27 | Mobil Oil Corporation | Ethylene polymer resins for blow molding applications |
US6316546B1 (en) | 1991-03-06 | 2001-11-13 | Exxonmobil Oil Corporation | Ethylene polymer film resins |
ES2145357T3 (en) * | 1991-03-06 | 2000-07-01 | Mobil Oil Corp | BIMODAL ETHYLENE POLYMERS PRODUCED IN REACTORS IN TANDEM. |
EP0533452A1 (en) * | 1991-03-21 | 1993-03-24 | Mobil Oil Corporation | Production of bimodal ethylene polymers in tandem reactors |
US5693583A (en) * | 1991-06-10 | 1997-12-02 | Mobil Oil Corporation | High activity polyethylene catalysts which produce bimodal or trimodal product molecular weight distributions |
ES2165354T3 (en) * | 1991-07-24 | 2002-03-16 | Exxonmobil Oil Corp | IMPROVED ETHYLENE POLYMER RESINS FOR FILMS. |
US5250612A (en) * | 1991-10-07 | 1993-10-05 | The Dow Chemical Company | Polyethylene films exhibiting low blocking force |
US5278272A (en) | 1991-10-15 | 1994-01-11 | The Dow Chemical Company | Elastic substantialy linear olefin polymers |
US5525695A (en) | 1991-10-15 | 1996-06-11 | The Dow Chemical Company | Elastic linear interpolymers |
US5674342A (en) | 1991-10-15 | 1997-10-07 | The Dow Chemical Company | High drawdown extrusion composition and process |
US5783638A (en) | 1991-10-15 | 1998-07-21 | The Dow Chemical Company | Elastic substantially linear ethylene polymers |
US5395471A (en) | 1991-10-15 | 1995-03-07 | The Dow Chemical Company | High drawdown extrusion process with greater resistance to draw resonance |
US5847053A (en) * | 1991-10-15 | 1998-12-08 | The Dow Chemical Company | Ethylene polymer film made from ethylene polymer blends |
US5582923A (en) | 1991-10-15 | 1996-12-10 | The Dow Chemical Company | Extrusion compositions having high drawdown and substantially reduced neck-in |
US5284613A (en) * | 1992-09-04 | 1994-02-08 | Mobil Oil Corporation | Producing blown film and blends from bimodal high density high molecular weight film resin using magnesium oxide-supported Ziegler catalyst |
US5314746A (en) * | 1992-11-12 | 1994-05-24 | Quantum Chemical Corporation | Soft, puncture- and tear-resistant polyolefin films |
US5705576A (en) * | 1992-11-12 | 1998-01-06 | Quantum Chemical Corporation | Process for controlling production of in-situ thermoplastic polyolefins and products |
US5587436A (en) * | 1992-11-12 | 1996-12-24 | Quantum Chemical Corporation | Process for controlling the polymerization of propylene and ethylene and copolymer products |
GB9224876D0 (en) † | 1992-11-27 | 1993-01-13 | Exxon Chemical Patents Inc | Improved processing polyolefin blends |
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ES2155095T5 (en) * | 1993-10-21 | 2006-04-16 | Exxonmobil Oil Corporation | MIXTURES OF POLYOLEFINS WITH BIMODAL DISTRIBUTION OF MOLECULAR PESOS. |
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US5792534A (en) | 1994-10-21 | 1998-08-11 | The Dow Chemical Company | Polyolefin film exhibiting heat resistivity, low hexane extractives and controlled modulus |
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US5882750A (en) * | 1995-07-03 | 1999-03-16 | Mobil Oil Corporation | Single reactor bimodal HMW-HDPE film resin with improved bubble stability |
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CA2188722A1 (en) | 1995-10-26 | 1997-04-27 | George Norris Foster | Process for preparing an in situ polyethylene blend |
US5925448A (en) † | 1995-11-07 | 1999-07-20 | Union Carbide Chemicals & Plastics Technology Corporation | Film extruded from a blend of ethylene copolymers |
US5736258A (en) | 1995-11-07 | 1998-04-07 | Union Carbide Chemicals & Plastics Technology Corporation | Film extruded from an in situ blend of ethylene copolymers |
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1988
- 1988-11-16 US US07/271,639 patent/US5047468A/en not_active Expired - Lifetime
-
1989
- 1989-11-15 KR KR1019890016523A patent/KR950000037B1/en not_active IP Right Cessation
- 1989-11-15 AT AT89121160T patent/ATE138087T1/en not_active IP Right Cessation
- 1989-11-15 NZ NZ231393A patent/NZ231393A/en unknown
- 1989-11-15 CZ CS896463A patent/CZ282728B6/en not_active IP Right Cessation
- 1989-11-15 EP EP89121160A patent/EP0369436B1/en not_active Expired - Lifetime
- 1989-11-15 ZA ZA898724A patent/ZA898724B/en unknown
- 1989-11-15 ES ES89121160T patent/ES2087067T3/en not_active Expired - Lifetime
- 1989-11-15 AU AU44699/89A patent/AU619357B2/en not_active Expired
- 1989-11-15 MY MYPI89001690A patent/MY106027A/en unknown
- 1989-11-15 PH PH39533A patent/PH26989A/en unknown
- 1989-11-15 DE DE68926490T patent/DE68926490T2/en not_active Expired - Lifetime
- 1989-11-15 CA CA002002992A patent/CA2002992C/en not_active Expired - Lifetime
- 1989-11-15 PL PL89282312A patent/PL163483B1/en unknown
- 1989-11-15 PT PT92322A patent/PT92322B/en not_active IP Right Cessation
- 1989-11-15 JP JP1295174A patent/JPH07116256B2/en not_active Expired - Lifetime
- 1989-11-15 FI FI895432A patent/FI895432A0/en not_active Application Discontinuation
- 1989-11-15 NO NO894548A patent/NO173242C/en unknown
- 1989-11-15 SK SK6463-89A patent/SK646389A3/en unknown
- 1989-11-15 CN CN89109264A patent/CN1040219C/en not_active Expired - Fee Related
- 1989-11-15 HU HU895915A patent/HU206508B/en not_active IP Right Cessation
- 1989-11-16 EG EG56389A patent/EG18942A/en active
- 1989-11-16 BR BR898905803A patent/BR8905803A/en not_active IP Right Cessation
- 1989-11-21 TR TR89/0983A patent/TR24887A/en unknown
-
1996
- 1996-05-17 GR GR960401333T patent/GR3019960T3/en unknown
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