JPS5718750A - Ethylene-propylene rubber composition - Google Patents

Ethylene-propylene rubber composition

Info

Publication number
JPS5718750A
JPS5718750A JP9417980A JP9417980A JPS5718750A JP S5718750 A JPS5718750 A JP S5718750A JP 9417980 A JP9417980 A JP 9417980A JP 9417980 A JP9417980 A JP 9417980A JP S5718750 A JPS5718750 A JP S5718750A
Authority
JP
Japan
Prior art keywords
ethylene
propylene
rubber composition
chain length
propylene rubber
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
JP9417980A
Other languages
Japanese (ja)
Inventor
Takeshi Akiyama
Toshiyuki Koide
Michio Nagasawa
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 JP9417980A priority Critical patent/JPS5718750A/en
Publication of JPS5718750A publication Critical patent/JPS5718750A/en
Pending legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: To prepare the titled composition having excellent elongation and mechanical strength, without lowering the rate of vulcanization, by compounding an ethylene-propylene copolymer rubber with an ethylene-propylene block copolymer having specific composition and ethylene chain length.
CONSTITUTION: 100pts.wt. of an ethylene-propylene copolymer rubber containing 0W50wt% of butyl rubber is compounded with 5W30pts.wt. of an ethylene-propylene block copolymer (pref. having an intrinsic viscosity of 1.0W5.0) having ethylene /propylene weight ratio of 40/60W55/45 and average ethylene chain length in the ethylene unit of 15W30.
USE: Especially as a roofing material, or to the field requiring high elongation.
COPYRIGHT: (C)1982,JPO&Japio
JP9417980A 1980-07-10 1980-07-10 Ethylene-propylene rubber composition Pending JPS5718750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9417980A JPS5718750A (en) 1980-07-10 1980-07-10 Ethylene-propylene rubber composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9417980A JPS5718750A (en) 1980-07-10 1980-07-10 Ethylene-propylene rubber composition

Publications (1)

Publication Number Publication Date
JPS5718750A true JPS5718750A (en) 1982-01-30

Family

ID=14103101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9417980A Pending JPS5718750A (en) 1980-07-10 1980-07-10 Ethylene-propylene rubber composition

Country Status (1)

Country Link
JP (1) JPS5718750A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4878249A (en) * 1972-01-19 1973-10-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4878249A (en) * 1972-01-19 1973-10-20

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