ZA845261B - Preparation of propylene/ethylene block copolymers - Google Patents

Preparation of propylene/ethylene block copolymers

Info

Publication number
ZA845261B
ZA845261B ZA845261A ZA845261A ZA845261B ZA 845261 B ZA845261 B ZA 845261B ZA 845261 A ZA845261 A ZA 845261A ZA 845261 A ZA845261 A ZA 845261A ZA 845261 B ZA845261 B ZA 845261B
Authority
ZA
South Africa
Prior art keywords
propylene
polymerization zone
ratio
partial pressure
hydrogen
Prior art date
Application number
ZA845261A
Inventor
Guenther Schweier
Wolfgang Gruber
Klaus-Dieter Reumpler
Original Assignee
Basf Ag
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 Basf Ag filed Critical Basf Ag
Publication of ZA845261B publication Critical patent/ZA845261B/en

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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Graft Or Block Polymers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

1. A process for the continuous preparation of propylene-ethylene block copolymers, in which, in an agitated fixed bed comprising small polymer particles, in each case in the presence of hydrogen as a molecular weight regulator and in the absence of a liquid reaction medium, first (I) propylene is homopolymerized, from the gas phase, in a first polymerization zone, by feeding in a Ziegler-Natta catalyst comprising (1) a titanium (III) component and (2) a dialkyl-aluminum chloride component, with or without (3) a further catalyst component, and then (II) the product obtained in the first polymerization zone is fed, with or without additional catalyst components (1) and/or (2) and/or (3), into a second polymerization zone, where a mixture of propylene and ethylene is polymerized with the propylene homopolymer present in the product from the first polymerization zone, with the proviso that the overall atomic ratio of titanium from the titanium (III) component (1) to aluminum from the dialkyl-aluminum chloride component (2) is from 1:2 to 1:15, wherein a) in the first polymerization zone, the reaction is carried out under a total pressure of from 25 to 40 bar and at from 70 to 100 degrees C, with the proviso that the ratio of the partial pressure of propylene to that of hydrogen (P/H-I) is from 100:0.1 to 100:15, b) in the second polymerization zone, the reaction is carried out under a total pressure from 22 to 34 bar and at from 63 to 83 degrees C, whit the provisos that (i) the ratio of the partial pressure of propylene to that of ethylene is from 100:10 to 100:70, and (ii) the ratio of the partial pressure of propylene to that of hydrogen (P/H-II) is from 100:5 to 100:50, c) the total pressure in the first polymerization zone is kept not less than 5 bar higher that that in the second polymerization zone, d) the relationship between the ratio partial pressure of propylene partial pressure of hydrogen in the fist polymerization zone (P/H-I) and the ratio partial pressure of propylene partial pressure of hydrogen in the second polymerization zone (P/H-II) is set so that the ratio P/H-I:P/H-II is from 0.6 to 1400, and e) the weight ratio of propylene converted to polymer in the first polymerization zone to propylene/ethylene mixture converted to polymer in the second polymerization zone is from 100:40 to 100:15.
ZA845261A 1983-07-09 1984-07-09 Preparation of propylene/ethylene block copolymers ZA845261B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833324793 DE3324793A1 (en) 1983-07-09 1983-07-09 METHOD FOR PRODUCING PROPYLENE-ETHYLENE POLYMERISATES OF THE TYPE OF THE SOCIAL BLOCK COPOLYMERISATE

Publications (1)

Publication Number Publication Date
ZA845261B true ZA845261B (en) 1985-03-27

Family

ID=6203564

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA845261A ZA845261B (en) 1983-07-09 1984-07-09 Preparation of propylene/ethylene block copolymers

Country Status (5)

Country Link
EP (1) EP0131268B1 (en)
AT (1) ATE40389T1 (en)
AU (1) AU566021B2 (en)
DE (2) DE3324793A1 (en)
ZA (1) ZA845261B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5639822A (en) * 1991-05-25 1997-06-17 Basf Aktiengesellschaft Process for the production of high-flow propylene/ethylene copolymers
US5741862A (en) * 1994-09-15 1998-04-21 Basf Aktiengesellschaft High flexible propylene/ethylene copolymers and process for preparing same

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62116618A (en) * 1985-11-15 1987-05-28 Chisso Corp Continuous production of propylene/ethylene block copolymer
US5006600A (en) * 1987-01-24 1991-04-09 Basf Aktiengesellschaft Preparation of propylene/ethylene polymers
DE3702038A1 (en) * 1987-01-24 1988-08-04 Basf Ag METHOD FOR PRODUCING PROPYLENE-ETHYLENE POLYMERISATS
US4950720A (en) * 1988-04-29 1990-08-21 Exxon Chemical Patents Inc. Modified polypropylene, process for making and article made from the same
US5047468A (en) * 1988-11-16 1991-09-10 Union Carbide Chemicals And Plastics Technology Corporation Process for the in situ blending of polymers
DE3904079A1 (en) * 1989-02-11 1990-08-23 Basf Ag METHOD FOR THE PRODUCTION OF PROPYLENE-ETHYLENE COPOLYMERISATS
DE4117842A1 (en) * 1991-05-31 1992-12-03 Basf Ag PROPYLENE-ETHYLENE-COPOLYMERISATE FROM THREE DIFFERENT INGREDIENTS
DE4119345A1 (en) * 1991-06-12 1992-12-17 Basf Ag PROPYLENE-ETHYLENE-COPOLYMERISATE WITH HIGH RUBBER CONTENT
DE4242056A1 (en) * 1992-12-14 1994-06-16 Basf Ag Copolymers of propylene with reduced tendency to crack

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE635981A (en) * 1962-08-14
NL6402946A (en) * 1963-03-27 1964-09-28
CA1129141A (en) * 1978-05-22 1982-08-03 Hajime Sadatoshi Process for producing propylene-ethylene block copolymers
JPS585321A (en) * 1981-07-03 1983-01-12 Mitsui Toatsu Chem Inc Production of propylene/ethylene block copolymer
DE3144312A1 (en) * 1981-11-07 1983-05-19 Basf Ag, 6700 Ludwigshafen METHOD FOR THE PRODUCTION OF PROPYLENE-ETHYLENE-POLYMERISATES OF THE TYPE OF THE SOCKET COPOLYMERS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5639822A (en) * 1991-05-25 1997-06-17 Basf Aktiengesellschaft Process for the production of high-flow propylene/ethylene copolymers
US5741862A (en) * 1994-09-15 1998-04-21 Basf Aktiengesellschaft High flexible propylene/ethylene copolymers and process for preparing same

Also Published As

Publication number Publication date
DE3476406D1 (en) 1989-03-02
DE3324793A1 (en) 1985-01-17
EP0131268A3 (en) 1985-07-03
EP0131268B1 (en) 1989-01-25
EP0131268A2 (en) 1985-01-16
ATE40389T1 (en) 1989-02-15
AU566021B2 (en) 1987-10-08
AU3043184A (en) 1985-01-10

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