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US 2003/0195268 A1Published application
Novel foaming compositions and methods for making and using the composition
OwnerJames W. Freitag, Donald W. Taylor +2inventors
InventorsJames W. Freitag, Donald W. Taylor, Jess Rogers, Jeffrey T. Pachl
Life of this patent
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Abstract
A low-temperature foam compositions and that are produced from an epoxy compound and an acid source can be substantially free of polyurethane or isocyanate chemistry. The disclosed compositions and precursors thereof reduce, if not eliminate, the presence of conventional undesirable compounds and by-products thereof.
Claims20
A method for producing a foam comprising:
- (a) combining at least one halogenated epoxy component with at least one acid source component and at least one blowing agent under conditions sufficient to provide an exothermic reaction wherein at least one foam precursor is encapsulated;
- and
- (b) utilizing heat from the exothermic reaction so as to expand the combined components to form a foam.
A foam precursor comprising:
- (a) an A-side foam precursor composition comprising at least halogenated epoxy functional compound, and a blowing agent, and;
- (b) a B-side foam precursor composition comprising an acid source and an optional curing agent;
- wherein at least one of said foam precursors is encapsulated.
Dependencies are inferred from the claim text.