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US 8,114,919 B2Granted
Microwave foam
AssigneeWacker Chemie AG
InventorJuergen Weidinger
Life of this patent
Estimating the term…
Abstract
Compositions foamable by exposure to microwave energy contain: (A) at least one compound bearing crosslinkable organic radicals for crosslinking, (B) at least one blowing agent which releases gas on heating, (C) at least one metal powder or metal compound, for example a metal oxide, individually, or a mixture thereof, which has microwave activity. Foams of uniform cell structure can be formulated with wide processing latitude.
Claims11
A microwave foamable composition comprising:
- (A) at least one compound bearing crosslinkable organic radicals,
- (B) a blowing composition comprising at least one blowing agent which releases gas on heating wherein the blowing agent which releases gas on heating consists of a mixture of two components, a first component consisting of one or more inorganic compounds which contain water of crystallization or intercalated water other than sodium pyrophosphate hydrate, and a second component which is sodium pyrophosphate hydrate, and
- (C) magnetite powder,
- the composition being foamable upon exposure to microwave energy to produce a foam of uniform foam structure and a continuous, smooth surface.
1 more element
Dependencies are inferred from the claim text.