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JPS57126807A - Butadiene polymer and its composition - Google Patents

Butadiene polymer and its composition

Info

Publication number
JPS57126807A
JPS57126807A JP1171181A JP1171181A JPS57126807A JP S57126807 A JPS57126807 A JP S57126807A JP 1171181 A JP1171181 A JP 1171181A JP 1171181 A JP1171181 A JP 1171181A JP S57126807 A JPS57126807 A JP S57126807A
Authority
JP
Japan
Prior art keywords
rubber
same
average
prepared
weight
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.)
Pending
Application number
JP1171181A
Other languages
Japanese (ja)
Inventor
Tsutomu Teraoka
Tsutomu Sumiya
Seiro Tabata
Goro Yamamoto
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 JP1171181A priority Critical patent/JPS57126807A/en
Publication of JPS57126807A publication Critical patent/JPS57126807A/en
Pending legal-status Critical Current

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  • Polymerization Catalysts (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: The title polymer excellent in resilience, heat generation, processability, etc., prepared by designing the polymer to have a bimodal MW distribution and a specified relationship between the weight-average MW of this rubber and that of a monomodal rubber having the same structural factor.
CONSTITUTION: A styrene/butadiene rubber prepared by polymerization with the aid of a monoorganolithium catalyst and having a Mooney viscosity (ML1+4, 100°C) of 65W150, a bimodal MW distribution and a relationship of the formula between the weight-average MW of this rubber (Mw-bi) and the weight-average MW of a monomodal rubber (Mw-mono) prepared by polymerization with the aid of the same catalyst and the same conditions and having the same structural factor and the same Mooney viscosity. The above relationship enables the rubber to have excellent resilience, heat generation processability. It is also possible to obtain a low Mooney viscosity composition by mixing 100pts.wt. this rubber, 5W 60pts.wt. process oil for rubber and 30W100pts.wt. carbon black.
COPYRIGHT: (C)1982,JPO&Japio
JP1171181A 1981-01-30 1981-01-30 Butadiene polymer and its composition Pending JPS57126807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1171181A JPS57126807A (en) 1981-01-30 1981-01-30 Butadiene polymer and its composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1171181A JPS57126807A (en) 1981-01-30 1981-01-30 Butadiene polymer and its composition

Publications (1)

Publication Number Publication Date
JPS57126807A true JPS57126807A (en) 1982-08-06

Family

ID=11785623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1171181A Pending JPS57126807A (en) 1981-01-30 1981-01-30 Butadiene polymer and its composition

Country Status (1)

Country Link
JP (1) JPS57126807A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60212413A (en) * 1984-04-09 1985-10-24 Nippon Erasutomaa Kk Random styrene-butadiene copolymer rubber having high styrene content
JPS60240746A (en) * 1984-05-16 1985-11-29 Japan Synthetic Rubber Co Ltd Butadiene copolymer rubber composition
JPS6137806A (en) * 1984-07-31 1986-02-22 Nippon Erasutomaa Kk Random styrene/butadiene copolymer rubber
JPS6262839A (en) * 1985-09-11 1987-03-19 バイエル・アクチエンゲゼルシヤフト Rubber mixture and vulcanized product manufactured therefrom
JPS62240337A (en) * 1986-04-10 1987-10-21 Sumitomo Chem Co Ltd Rubber composition for tire tread

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313677A (en) * 1976-07-23 1978-02-07 Yukosha Kk Vacuum molding machine
JPS5787407A (en) * 1980-11-21 1982-05-31 Japan Synthetic Rubber Co Ltd Preparation of styrene-butadiene copolymer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313677A (en) * 1976-07-23 1978-02-07 Yukosha Kk Vacuum molding machine
JPS5787407A (en) * 1980-11-21 1982-05-31 Japan Synthetic Rubber Co Ltd Preparation of styrene-butadiene copolymer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60212413A (en) * 1984-04-09 1985-10-24 Nippon Erasutomaa Kk Random styrene-butadiene copolymer rubber having high styrene content
JPH0627122B2 (en) * 1984-04-09 1994-04-13 日本エラストマ−株式会社 Random styrene-butadiene copolymer rubber with high styrene content
JPS60240746A (en) * 1984-05-16 1985-11-29 Japan Synthetic Rubber Co Ltd Butadiene copolymer rubber composition
JPH045059B2 (en) * 1984-05-16 1992-01-30
JPS6137806A (en) * 1984-07-31 1986-02-22 Nippon Erasutomaa Kk Random styrene/butadiene copolymer rubber
JPH0629283B2 (en) * 1984-07-31 1994-04-20 日本エラストマ−株式会社 Random styrene-butadiene copolymer rubber
JPS6262839A (en) * 1985-09-11 1987-03-19 バイエル・アクチエンゲゼルシヤフト Rubber mixture and vulcanized product manufactured therefrom
JPS62240337A (en) * 1986-04-10 1987-10-21 Sumitomo Chem Co Ltd Rubber composition for tire tread

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