Fluorocarbon elastomer silicon vulcanizates

Details Fluorocarbon elastomer silicon vulcanizates Fluorocarbon elastomer silicon vulcanizates

2005-06-01

2009-06-30

Gulakowski, Randy (Department: 1796)

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

Synthetic resins

From silicon reactant having at least one...

C528S024000, C528S031000, C528S032000, C525S104000, C525S474000, C525S478000, C525S479000

Reexamination Certificate

active

07553920

ABSTRACT:
A method is disclosed for preparing an elastomeric composition comprising:(I) mixing(A) a silicone base comprising a curable organopolysiloxane,(B) an optional crosslinking agent,(C) a cure agent in an amount sufficient to cure said organopolysiloxane;(II) mixing the product of step (I) with(D) a fluorocarbon elastomer,(E) an optional compatibilizer,(F) an optional catalyst,and(III) statically vulcanizing the organopolysiloxane,wherein the weight ratio of fluorocarbon elastomer (D) to silicone base (A) in the elastomeric base composition ranges from 95:5 to 30:70.The cured rubber compositions obtained from the fluorocarbon elastomeric compositions herein have good fuel resistance properties.

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