Foaming curable composition
AssigneeSunstar Engineering Inc.
InventorsKazuaki HANASAKI, Shuhei KONISHI, Atsushi UNO
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Abstract
Provided is a foaming curable composition containing a heat-curable elastomer (A), a chemical foaming agent (B), and expandable particles (C) having a shell and an encapsulated component, wherein the chemical foaming agent (B) contains a hydrazine-based foaming agent (B1), and the peak foaming temperature of the chemical foaming agent (B) is 5° C. to 50° C. higher than the peak expansion temperature of the expandable particles (C). This novel foaming curable composition has good foaming and adhesive properties, as well as good properties after standing uncured.
Claims14
A foamable and curable composition comprising:
- a thermally curable elastomer (A),
- a chemical foaming agent (B);
- and
- expandable particles (C) having a shell and an enclosed component,
- wherein
- the chemical foaming agent (B) includes a hydrazine-based foaming agent (B1), and
- a peak temperature difference defined by [a foaming peak temperature of the chemical foaming agent (B)]−[an expansion peak temperature of the expandable particles (C)] is −10° C. or more and 40° C. or less.
Dependencies are inferred from the claim text.