GB964478A - Improvements in or relating to block copolymers - Google Patents

Improvements in or relating to block copolymers

Info

Publication number
GB964478A
GB964478A GB45134/62A GB4513462A GB964478A GB 964478 A GB964478 A GB 964478A GB 45134/62 A GB45134/62 A GB 45134/62A GB 4513462 A GB4513462 A GB 4513462A GB 964478 A GB964478 A GB 964478A
Authority
GB
United Kingdom
Prior art keywords
polar solvent
mixture
conjugated diene
aromatic compound
polymerization
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
GB45134/62A
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.)
Phillips Petroleum Co
Original Assignee
Phillips Petroleum Co
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
Priority claimed from US162636A external-priority patent/US3287333A/en
Application filed by Phillips Petroleum Co filed Critical Phillips Petroleum Co
Publication of GB964478A publication Critical patent/GB964478A/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
    • C08F297/02—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 anionic type
    • C08F297/04—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 anionic type polymerising vinyl aromatic monomers and conjugated dienes
    • C08F297/046—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 anionic type polymerising vinyl aromatic monomers and conjugated dienes polymerising vinyl aromatic monomers and isoprene, optionally with other conjugated dienes
    • 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
    • C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
    • 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
    • C08F297/02—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 anionic type
    • C08F297/04—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 anionic type polymerising vinyl aromatic monomers and conjugated dienes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Graft Or Block Polymers (AREA)

Abstract

A block copolymer formed of a central copolymer block and two terminal monopolymer blocks is produced by polymerizing a mixture comprising (1) a conjugated diene and (2) a vinyl substituted aromatic hydrocarbon with an initiator which is the reaction product obtained by reacting lithium with a condensed-ring aromatic compound in a polar solvent, and in the presence of paraffinic, cycloparaffinic or aromatic hydrocarbons as diluent, the amount of said polar solvent present in the polymerization being less than 1.75 parts of polar solvent per 100 parts of said mixture of a conjugated diene and a vinyl-substituted aromatic hydrocarbon. The conjugated diene is preferably 1,3-butadiene, isoprene or piperylene and is present in an amount of from 40-85 parts by weight of the mixture. A long list of suitable vinyl substituted aromatic hydrocarbons is supplied. The diluent is preferably a hydrocarbon which contains 3 to 12 carbon atoms. To produce the initiator system at least 2 gram atoms of lithium per mol of the condensed ring aromatic compound, which may be naphthalene, anthracene or phenanthrene or an alkyl derivative thereof is employed. The reaction is conducted in a polar solvent preferably an aliphatic monoether which has the formula ROR wherein is an alkyl radical containing from 2-12 carbon atoms at a temperature of from -40 DEG F. to 40 DEG F. A preferred initiator system is obtained by reacting lithium with a condensed ring aromatic compound and a conjugated diene in an amount of from 0.05-5 mol. of the diene per mol. of the aromatic compound. The initiator is used in amounts of from 1-5 millimoles per 100 grams of the monomer to be polymerized. The polymerization is carried out at a temperature of from -20 to 150 DEG C. and at a pressure sufficient to maintain the polymerization mixture in the liquid phase. The resulting polymer consists of a central copolymer block and two terminal homopolymer blocks consisting of the polymerized aromatic hydrocarbon. Specification 888,624 is referred to.
GB45134/62A 1961-12-26 1962-11-29 Improvements in or relating to block copolymers Expired GB964478A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US162636A US3287333A (en) 1961-12-26 1961-12-26 Process for preparing a conjugated diene-vinyl-aromatic block copolymer with a lithium-condensed aromatic ring compound catalyst
BE679104 1966-04-06

Publications (1)

Publication Number Publication Date
GB964478A true GB964478A (en) 1964-07-22

Family

ID=25656405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45134/62A Expired GB964478A (en) 1961-12-26 1962-11-29 Improvements in or relating to block copolymers

Country Status (2)

Country Link
BE (1) BE679104A (en)
GB (1) GB964478A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402715A1 (en) * 1973-01-24 1974-08-01 Sumitomo Chemical Co BLOCK COPOLYMERIZATES, PROCESS FOR THEIR PRODUCTION AND THEIR USE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402715A1 (en) * 1973-01-24 1974-08-01 Sumitomo Chemical Co BLOCK COPOLYMERIZATES, PROCESS FOR THEIR PRODUCTION AND THEIR USE

Also Published As

Publication number Publication date
BE679104A (en) 1966-09-16

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