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US 6,184,293 B2Granted
Molding composition based on fluoropolymers and process for producing foam material therefrom
AssigneeHoechst Aktiengesellschaft
InventorsAxel Schönfeld, Andreas Schleicher, Georg Frank, Helmut Scheckenbach
Life of this patent
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Abstract
The invention relates to a molding composition based on fluoropolymers which additionally contain from 1 to 50% by weight of at least one polymer containing sulfoxide groups. The polymer containing sulfoxide groups comprises, in particular, polyarylene sulfoxide units of the formula: —(—C6H4—SO—)—.
Claims7
A molding composition comprising:
- (a) a foamable, moldable fluoropolymer, and
- (b) a blowing agent for said foamable, moldable fluoropolymer consisting essentially of from 1 to 50% by weight, based on the weight of said molding composition, of a thermally unstable polymer having recurring units, said recurring units consisting essentially of arylene sulfoxide units, said arylene sulfoxide units, under the action of heat, being decomposable into arylene sulfide units, with liberation of oxygen or CO2 or H2O to provide a foaming effect.
Dependencies are inferred from the claim text.