GB970479A - Improvements in or relating to olefine polymerisation - Google Patents

Improvements in or relating to olefine polymerisation

Info

Publication number
GB970479A
GB970479A GB4573361A GB4573361A GB970479A GB 970479 A GB970479 A GB 970479A GB 4573361 A GB4573361 A GB 4573361A GB 4573361 A GB4573361 A GB 4573361A GB 970479 A GB970479 A GB 970479A
Authority
GB
United Kingdom
Prior art keywords
propylene
ethylene
added
polymerization
reactor
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
Application number
GB4573361A
Inventor
John Alvey Bond
Michael Clark
Laurence Stephen Rayner
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB4573361A priority Critical patent/GB970479A/en
Publication of GB970479A publication Critical patent/GB970479A/en
Expired legal-status Critical Current

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)

Abstract

Ethylene and propylene are block copolymerized in a reactor, in the presence of a polymerization catalyst and at a temperature of between 10 and 90 DEG C.; a single charge of ethylene is employed and is added to the reactor when the partial propylene pressure therein is at least 0.5 atmospheres. Preferably the single charge of ethylene, constituting less than 15% of the total weight of propylene, is added after at least 80% of the total yield of solid polymer finally obtained as the product of polymerization has been formed. If desired more propylene may be added for a short period after ethylene addition has been stopped. The molecular weight of the block copolymers may be controlled by the addition of hydrogen in the propylene feed, in proportion of between 0.02 and 5% molar, in which case 5-15% of ethylene by weight of the total amount of propylene charged is used. Polymerization is carried out in an inert hydrocarbon diluent. Catalysts used are generally those of which one component is an organo-metallic compound and the other a compound of a transition metal from Group IV-VI of the Periodic Table. Specifications 877,050, 941,083 and 970,478 are referred to.
GB4573361A 1961-12-20 1961-12-20 Improvements in or relating to olefine polymerisation Expired GB970479A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4573361A GB970479A (en) 1961-12-20 1961-12-20 Improvements in or relating to olefine polymerisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4573361A GB970479A (en) 1961-12-20 1961-12-20 Improvements in or relating to olefine polymerisation

Publications (1)

Publication Number Publication Date
GB970479A true GB970479A (en) 1964-09-23

Family

ID=10438355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4573361A Expired GB970479A (en) 1961-12-20 1961-12-20 Improvements in or relating to olefine polymerisation

Country Status (1)

Country Link
GB (1) GB970479A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072128A2 (en) 1981-08-07 1983-02-16 Imperial Chemical Industries Plc Spraying solid
EP0359321A1 (en) * 1988-09-16 1990-03-21 SOLVAY (Société Anonyme) Fibrillated tapes based on polymers of propylene, and their use in the manufacture of artificial grass

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072128A2 (en) 1981-08-07 1983-02-16 Imperial Chemical Industries Plc Spraying solid
EP0359321A1 (en) * 1988-09-16 1990-03-21 SOLVAY (Société Anonyme) Fibrillated tapes based on polymers of propylene, and their use in the manufacture of artificial grass
BE1002478A4 (en) * 1988-09-16 1991-02-26 Solvay PROPYLENE POLYMER STRIPS AND THEIR USE IN THE MANUFACTURE OF SYNTHETIC GRASS.
US5045598A (en) * 1988-09-16 1991-09-03 Solvay & Cie (Soci e/ te Anonyme) Slit film yarn based on propylene polymer and its use for the manufacture of synthetic lawn

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