JPS5690843A - Rubber composition having high hardness and excellent workability - Google Patents

Rubber composition having high hardness and excellent workability

Info

Publication number
JPS5690843A
JPS5690843A JP16707979A JP16707979A JPS5690843A JP S5690843 A JPS5690843 A JP S5690843A JP 16707979 A JP16707979 A JP 16707979A JP 16707979 A JP16707979 A JP 16707979A JP S5690843 A JPS5690843 A JP S5690843A
Authority
JP
Japan
Prior art keywords
rubber
blended
rubber composition
high hardness
polubutadiene
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
JP16707979A
Other languages
Japanese (ja)
Inventor
Yasumasa Takeuchi
Kensho Ando
Tsutomu Tanimoto
Tsutomu Iwaki
Takashi Takeuchi
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.)
JSR Corp
Original Assignee
Japan Synthetic Rubber Co 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 Japan Synthetic Rubber Co Ltd filed Critical Japan Synthetic Rubber Co Ltd
Priority to JP16707979A priority Critical patent/JPS5690843A/en
Publication of JPS5690843A publication Critical patent/JPS5690843A/en
Pending legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: To provide the titled rubber compsn., by a method wherein 1,2-polybutadiene having excellent fluidity is blended with a rubber material, and a diene rubber having a specified MW is added to the resulting mixt.
CONSTITUTION: 90W50pts.wt. rubber material (at least one member selected from natural rubber, a polyisobutylene rubber, a styrene-butadiene copolymer rubber, a polubutadiene rubber and an ethylene-α-olefin rubber) is blended with 10W50pts.wt. 1,2-polybutadiene having excellent fluidity [having a vinyl bond content of 70% or more, a crystallization degree of 5W40% and an intrinsic viscosity of 0.7 or more (at 30°C in toluene)]. Then 5W30pts.wt. diene rubber having a viscosity-average MW of 20,000W140,000 (e.g. a polyisoprene rubber, a styrene- butadiene copolymer rubber or a polubutadiene rubber) is blended with 100pts.wt. above rubber mixt.
COPYRIGHT: (C)1981,JPO&Japio
JP16707979A 1979-12-22 1979-12-22 Rubber composition having high hardness and excellent workability Pending JPS5690843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16707979A JPS5690843A (en) 1979-12-22 1979-12-22 Rubber composition having high hardness and excellent workability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16707979A JPS5690843A (en) 1979-12-22 1979-12-22 Rubber composition having high hardness and excellent workability

Publications (1)

Publication Number Publication Date
JPS5690843A true JPS5690843A (en) 1981-07-23

Family

ID=15843005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16707979A Pending JPS5690843A (en) 1979-12-22 1979-12-22 Rubber composition having high hardness and excellent workability

Country Status (1)

Country Link
JP (1) JPS5690843A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62223247A (en) * 1985-09-18 1987-10-01 Japan Synthetic Rubber Co Ltd Crosslinked rubber
US5420193A (en) * 1992-09-29 1995-05-30 Bridgestone Corporation Heavy duty vehicle pneumatic tires

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62223247A (en) * 1985-09-18 1987-10-01 Japan Synthetic Rubber Co Ltd Crosslinked rubber
JPH0655855B2 (en) * 1985-09-18 1994-07-27 日本合成ゴム株式会社 Manufacturing method of rubber cross-linked product
US5420193A (en) * 1992-09-29 1995-05-30 Bridgestone Corporation Heavy duty vehicle pneumatic tires

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