JPS56166242A - Preparation of rubber composition having high modulus of elasticity - Google Patents

Preparation of rubber composition having high modulus of elasticity

Info

Publication number
JPS56166242A
JPS56166242A JP6957080A JP6957080A JPS56166242A JP S56166242 A JPS56166242 A JP S56166242A JP 6957080 A JP6957080 A JP 6957080A JP 6957080 A JP6957080 A JP 6957080A JP S56166242 A JPS56166242 A JP S56166242A
Authority
JP
Japan
Prior art keywords
rubber
rubber composition
isotactic
poly
elasticity
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
JP6957080A
Other languages
Japanese (ja)
Other versions
JPS6255542B2 (en
Inventor
Hiroharu Ikeda
Kohei Goto
Yasuyuki Shimozato
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 JP6957080A priority Critical patent/JPS56166242A/en
Priority to US06/256,921 priority patent/US4380607A/en
Priority to DE8181301878T priority patent/DE3175852D1/en
Priority to EP19810301878 priority patent/EP0039240B1/en
Publication of JPS56166242A publication Critical patent/JPS56166242A/en
Publication of JPS6255542B2 publication Critical patent/JPS6255542B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE: To prepare a rubber composition havning high modulus of elasticity and improved tear resistance industrially advantageously, by blending a dispersion of a high-melting isotactic polyolefin in an organic solvent with a rubber solution, followed by recovering the prepared mixture.
CONSTITUTION: A dispersion, obtained by dispersing a finely divided high-melting isotactic poly-α-olefin, e.g., poly(4-methyl-1-pentene), isotactic polypropylene, having an average particle diameter ≤200μ, preferably 50μ, into an organic solvent, is blended with a solution of rubber, e.g., polyisoprene rubber, polybutadiene rubber, styrene-butadiene rubber, etc. with stirring, and the prepared polymer mixture is recovered. Preferably the content of isotactic poly-α-olefin in the rubber composition is 20W40wt%, especially 3W25wt%.
COPYRIGHT: (C)1981,JPO&Japio
JP6957080A 1980-04-28 1980-05-27 Preparation of rubber composition having high modulus of elasticity Granted JPS56166242A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP6957080A JPS56166242A (en) 1980-05-27 1980-05-27 Preparation of rubber composition having high modulus of elasticity
US06/256,921 US4380607A (en) 1980-04-28 1981-04-23 Rubber composition having high modulus of elasticity and process for preparing same
DE8181301878T DE3175852D1 (en) 1980-04-28 1981-04-28 Process for the preparation of rubber compositions having a high modulus of elasticity
EP19810301878 EP0039240B1 (en) 1980-04-28 1981-04-28 Process for the preparation of rubber compositions having a high modulus of elasticity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6957080A JPS56166242A (en) 1980-05-27 1980-05-27 Preparation of rubber composition having high modulus of elasticity

Publications (2)

Publication Number Publication Date
JPS56166242A true JPS56166242A (en) 1981-12-21
JPS6255542B2 JPS6255542B2 (en) 1987-11-20

Family

ID=13406567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6957080A Granted JPS56166242A (en) 1980-04-28 1980-05-27 Preparation of rubber composition having high modulus of elasticity

Country Status (1)

Country Link
JP (1) JPS56166242A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004263046A (en) * 2003-02-28 2004-09-24 Sumitomo Rubber Ind Ltd Rubber composition for tire and pneumatic tire using the same
JP2004263045A (en) * 2003-02-28 2004-09-24 Sumitomo Rubber Ind Ltd Rubber composition for tire and pneumatic tire using the same
JP2004339287A (en) * 2003-05-13 2004-12-02 Sumitomo Rubber Ind Ltd Rubber composition for bead apex and pneumatic tire using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004263046A (en) * 2003-02-28 2004-09-24 Sumitomo Rubber Ind Ltd Rubber composition for tire and pneumatic tire using the same
JP2004263045A (en) * 2003-02-28 2004-09-24 Sumitomo Rubber Ind Ltd Rubber composition for tire and pneumatic tire using the same
JP2004339287A (en) * 2003-05-13 2004-12-02 Sumitomo Rubber Ind Ltd Rubber composition for bead apex and pneumatic tire using the same

Also Published As

Publication number Publication date
JPS6255542B2 (en) 1987-11-20

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