GB1341184A - Reduction of molecular weight of unsaturated polymers - Google Patents

Reduction of molecular weight of unsaturated polymers

Info

Publication number
GB1341184A
GB1341184A GB2077970A GB2077970A GB1341184A GB 1341184 A GB1341184 A GB 1341184A GB 2077970 A GB2077970 A GB 2077970A GB 2077970 A GB2077970 A GB 2077970A GB 1341184 A GB1341184 A GB 1341184A
Authority
GB
United Kingdom
Prior art keywords
polymer
molecular weight
unsaturated polymers
reduction
polymers
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
GB2077970A
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.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber 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
Application filed by Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Priority claimed from GB5239470A external-priority patent/GB1340524A/en
Publication of GB1341184A publication Critical patent/GB1341184A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G61/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
    • C08G61/02—Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes
    • C08G61/04—Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms
    • C08G61/06—Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms prepared by ring-opening of carbocyclic compounds
    • C08G61/08—Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms prepared by ring-opening of carbocyclic compounds of carbocyclic compounds containing one or more carbon-to-carbon double bonds in the ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C19/00—Chemical modification of rubber
    • 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
    • C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1341184 Reducing molecular weights of unsaturated polymers GOODYEAR TIRE & RUBBER CO 4 Nov 1970 [4 Dec 1969] 20779/73 Divided out of 1340524 Heading C3P The molecular weight of a polymer having olefinic double bonds in the main polymer chain is reduced by reacting the polymer in the presence of an olefin metathesis catalyst with a compound of formula G 2 C=CHG, where G is hydrogen, methyl or D-CH 2 - and D is a hydrocarbon group. The reaction of 2-octene with polyoctenamer in the presence of WCl 6 . EtOH and EtAlCl 2 (immediately after formation of the polymer from cyclooctene and the same catalyst) is described, and polymers and copolymers of butadiene and isoprene are also mentioned.
GB2077970A 1969-12-04 1970-11-04 Reduction of molecular weight of unsaturated polymers Expired GB1341184A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88226969A 1969-12-04 1969-12-04
GB5239470A GB1340524A (en) 1969-12-04 1970-11-04 Ring-opening polymerization process

Publications (1)

Publication Number Publication Date
GB1341184A true GB1341184A (en) 1973-12-19

Family

ID=26267054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2077970A Expired GB1341184A (en) 1969-12-04 1970-11-04 Reduction of molecular weight of unsaturated polymers

Country Status (1)

Country Link
GB (1) GB1341184A (en)

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Legal Events

Date Code Title Description
48R Reference inserted (sect. 8/1949)
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee