NBR composition

Details NBR composition NBR composition

2011-08-02

2011-08-02

Mulcahy, Peter D (Department: 1762)

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S495000

Reexamination Certificate

active

07989539

ABSTRACT:
An NBR composition, which comprises NBR, and white carbon having a specific surface area (BET method) of 30-110 m2/g, preferably 30-60 m2/g, can be vulcanized by a vulcanization system consisting of an organic peroxide and sulfur or a sulfur-generating compound, and can give vulcanization moldings having equivalent compression set characteristics to those of expensive hydrogenated NBR vulcanization moldings, and thus can be effectively used as a vulcanization molding material for seal materials calling for such characteristics, for example, O rings, gaskets, packings, oil seals, etc.

REFERENCES:
patent: 2003/0045624 (2003-03-01), Matsunaga et al.
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International Preliminary Report on Patentability and Written Opinion from corresponding PCT application No. PCT/JP2009/060489 dated Jan. 11, 2011, 6 pages.

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