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US 7,067,612 B2Granted
Preformed compositions in shaped form
AssigneePRC-DeSoto International, Inc.
InventorMichael A. Cosman
Life of this patent
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Abstract
Preformed compositions comprising sulfur-containing polymers in shaped form and the use of preformed compositions in shaped form to seal apertures. In certain embodiments, the preformed compositions comprise a sulfur-containing polymer and a blend of fillers wherein the blend comprises substantially equal amounts of mica and polyamide.
Claims36
A preformed composition in shaped form comprising a sulfur-containing polymer, and a blend of fillers wherein the blend of fillers comprises substantially equal amounts of mica and polyamide.
A method for sealing an aperture comprising
- preparing a preformed composition comprising a curable sulfur-containing polymer in shaped form, wherein the average number molecular weight of the sulfur-containing polymer ranges from 500 to 8,000 Daltons;
- refrigerating the preformed composition;
- equilibrating the preformed composition to a temperature ranging from 4° C. to 32° C.;
- and
- applying the thermally eciuilibrated preformed composition to a surface to seal an aperture.
2 more elements
A composition comprising:
- (a) a sulfur-containing polymer, and
- (b) a blend of fillers, wherein the blend comprises substantially equal amounts of mica and polyamide.
Dependencies are inferred from the claim text.