Rubber composition containing cyclic polysulfide as...

Details Rubber composition containing cyclic polysulfide as... Rubber composition containing cyclic polysulfide as...

2004-10-13

2009-08-04

Choi, Ling-Siu (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S535000

Reexamination Certificate

active

07569639

ABSTRACT:
A rubber composition containing 100 parts by weight a sulfur-vulcanizable rubber (A) and 0.1 to 30 parts by weight of a vulcanization agent of a cyclic polysulfide (B) having the formula (I):wherein R is a substituted or unsubstituted C2to C20alkylene group, substituted or unsubstituted C2to C20oxyalkylene group or alkylene group having an aromatic ring, n is an integer of 1 to 20, x is a number of 2 to 6 on average.

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PCT International Search Report for PCT/JP2004/015451 mailed on Nov. 22, 2004.
Sho Yamazaki, et al., “Vulcanization Performance of Tetrasulfide Polymer”, The Society of Rubber Industry, Japan, 1981 Research Presentation Conference, Abstracts, pp. 53, 2-17.

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