Back to results
US 6,610,754 B1Granted
Novolac-epoxy resin foam, foamable composition for making novolac-epoxy resin foam and method of making novolac-epoxy resin foam
AssigneeAmerican Foam Technologies, Inc.
InventorSamuel L. Rader
Life of this patent
Estimating the term…
Abstract
Provided is a foamable composition adapted to form a cross-linked novolac-epoxy resin foam. The foamable composition is formulated from a composition comprising at least one novolac resin, at least one epoxy resin, and at least one blowing agent.
Claims49
A method of making a novolac-epoxy resin foam comprising the steps of:
- reacting at least one epoxy resin with at least one novolac resin in presence of at least one reactive blowing agent that generates a blowing gas by reaction during curing of the novolac resin and epoxy resin and provides heat of reaction to increase a cure speed to form a novolac-epoxy foam, wherein the ratio between said novolac resin and said epoxy resin is selected to provide a desired flexibility in said foam.
A method of spray-foaming a novolac-epoxy resin foam layer on a surface comprising the steps of:
- spraying a foamable composition comprising at least one epoxy resin, at least one novolac resin, and at least one reactive blowing agent that generates a blowing gas by reaction during curing of the novolac resin and epoxy resin on a surface to form a novolac-epoxy foam layer, Wherein the ratio between said novolac resin and said epoxy resin is selected to provide a desired flexibility in said foam layer.
Dependencies are inferred from the claim text.