JPS57165445A - Rubber composition - Google Patents

Rubber composition

Info

Publication number
JPS57165445A
JPS57165445A JP5049981A JP5049981A JPS57165445A JP S57165445 A JPS57165445 A JP S57165445A JP 5049981 A JP5049981 A JP 5049981A JP 5049981 A JP5049981 A JP 5049981A JP S57165445 A JPS57165445 A JP S57165445A
Authority
JP
Japan
Prior art keywords
aromatic compound
content
conjugated diene
monovinyl aromatic
branched
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
Application number
JP5049981A
Other languages
Japanese (ja)
Other versions
JPS6356263B2 (en
Inventor
Goro Yamamoto
Tsutomu Teraoka
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.)
NIHON ERASUTOMAA KK
NIPPON ELASTOMER KK
NIPPON ERASUTOMAA KK
Original Assignee
NIHON ERASUTOMAA KK
NIPPON ELASTOMER KK
NIPPON ERASUTOMAA KK
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 NIHON ERASUTOMAA KK, NIPPON ELASTOMER KK, NIPPON ERASUTOMAA KK filed Critical NIHON ERASUTOMAA KK
Priority to JP5049981A priority Critical patent/JPS57165445A/en
Publication of JPS57165445A publication Critical patent/JPS57165445A/en
Publication of JPS6356263B2 publication Critical patent/JPS6356263B2/ja
Granted legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE:A composition useful as a tire tread, having improved impact resilience, heat generation resistance, and wear resistance, comprising a branched random block copolymer obtained by copolymerizing a monovinyl aromatic compound with a conjugated diene in the presence of a catalyst of an organolithium compound. CONSTITUTION:A branched random block copolymer shown by the formulaIor II (n is integer >=2) obtained by copolymerizing a monovinyl aromatic compound with a conjugated diene in the presence of a catalyst of an organolithium compound, comprising >=20wt% branched component shown by the formula III or IV and 10-35wt% monovinyl aromatic compound, wherein A is a random copolymer block consisting of the monomvinyl aromatic compound and the conjugated diene and has a high content of monovinyl aromatic compound (higher than that of the branched random block copolymer and <=twice the content) and B is a conjugated diene polymer block or a random copolymer block consisting of the monovinyl aromatic compound and the conjugated diene and has no content of the vinyl aromatic compound at all or a low content (lower than the content of A and <=30wt%), is blended with a processed oil for rubber and carbon black in such a way that the difference of the content of A and B is >=5wt% and the amounts of A and B are in the range of 30-80wt% and 70-20wt% respectively.
JP5049981A 1981-04-06 1981-04-06 Rubber composition Granted JPS57165445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5049981A JPS57165445A (en) 1981-04-06 1981-04-06 Rubber composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5049981A JPS57165445A (en) 1981-04-06 1981-04-06 Rubber composition

Publications (2)

Publication Number Publication Date
JPS57165445A true JPS57165445A (en) 1982-10-12
JPS6356263B2 JPS6356263B2 (en) 1988-11-07

Family

ID=12860630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5049981A Granted JPS57165445A (en) 1981-04-06 1981-04-06 Rubber composition

Country Status (1)

Country Link
JP (1) JPS57165445A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018537A (en) * 1983-07-12 1985-01-30 Sumitomo Bakelite Co Ltd Electrically conductive thermoplastic elastomer
JPS62143959A (en) * 1985-12-18 1987-06-27 Japan Synthetic Rubber Co Ltd Oil-extended butadiene block copolymer rubber composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018537A (en) * 1983-07-12 1985-01-30 Sumitomo Bakelite Co Ltd Electrically conductive thermoplastic elastomer
JPS62143959A (en) * 1985-12-18 1987-06-27 Japan Synthetic Rubber Co Ltd Oil-extended butadiene block copolymer rubber composition

Also Published As

Publication number Publication date
JPS6356263B2 (en) 1988-11-07

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