JPS5690843A - Rubber composition having high hardness and excellent workability - Google Patents
Rubber composition having high hardness and excellent workabilityInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1979
- 1979-12-22 JP JP16707979A patent/JPS5690843A/en active Pending
Cited By (3)
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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