US 2010/0166996 A1 · Fluorosilicone Elastomers For High Temperature Performance

Abstract

Fluorosilicone elastomer base compositions are disclosed containing a stabilizer that provides cured fluorosilicone elastomers having improved high temperature performance. The stabilizer comprises carbon black, calcium carbonate, iron oxide, and optionally zinc oxide. The stabilizer is particularly useful to prepare cured fluorosilicone elastomers for o-rings, connectors, and constructing automotive hosing.

Claims17

Dependent claims

A curable fluorosilicone elastomer composition comprising:

A) 70-95 weight % of a fluorosilicone elastomer base,
B) 1.5-40 weight % of a stabilizer comprising;
B1) carbon black,
B2) calcium carbonate,
B3) iron oxide,
B4) optionally zinc oxide,
wherein the amount of parts by weight of components B1, B2, B3, and optionally B4used in 100 parts by weight of the stabilizer varies from 2 to 50 parts, and
C) 0.1-3 wt % of a cure agent, with the proviso that the wt % of components A), B), and C) sums to 100 wt %.

5 more elements

Dependencies are inferred from the claim text.

Fluorosilicone Elastomers For High Temperature Performance

Life of this patent

Fluorosilicone Elastomers For High Temperature Performance

Life of this patent

Abstract

Claims17