Cross-linkable nitrile rubber composition and cross-linked...

Details Cross-linkable nitrile rubber composition and cross-linked... Cross-linkable nitrile rubber composition and cross-linked...

2009-01-30

2011-10-11

Choi, Ling (Department: 1762)

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

Synthetic resins

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

C525S329100, C525S379000, C525S374000

Reexamination Certificate

active

08034881

ABSTRACT:
A cross-linkable nitrile rubber composition containing a highly saturated nitrile rubber (a) having an α,β-ethylenically unsaturated nitrile monomer unit and a carboxyl-group containing monomer unit and having an iodine value of 120 or less, a cross-linking agent (b), and a specific cyclic amidine and/or cyclic amidinium salt (c) is provided. Preferably, the cross-linking agent (b) is a polyamine-based cross-linking agent (d), and more preferably, the carboxyl-group containing monomer unit is an α,β-ethylenically unsaturated dicarboxylic acid monoester monomer unit.

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