Nitrile polymer vulcanizate and process for the production...

Details Nitrile polymer vulcanizate and process for the production... Nitrile polymer vulcanizate and process for the production...

2005-09-20

2005-09-20

Egwim, Kelechi C. (Department: 1713)

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

Synthetic resins

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

C524S087000, C524S100000, C524S258000, C524S401000, C524S436000, C525S329200, C525S329300, C525S387000

Reexamination Certificate

active

06946526

ABSTRACT:
The present invention is directed to a nitrile polymer vulcanizate having improved hot air aging characteristics. The nitrile polymer vulcanizate may be produced by admixing a composition containing: (i) a nitrile polymer; (ii) a filler; (iii) a metal salt of a secondary amine; (iv) a vulcanization system; and optionally (v) an additive selected from the group consisting of a strong base, a salt of a strong base and a weak acid, a salt of a weak acid, a carbodiimide, a polycarbodiimide and mixtures thereof.

REFERENCES:
patent: 3886115 (1975-05-01), Murayama et al.
patent: 940429 (1999-09-01), None
patent: 1 558 491 (1980-01-01), None

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