Epoxy foams using multiple resins and curing agents
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 29, 2000
Grant Date -
N/A
app pub date -
Jan 13, 1999
filing date -
Jan 13, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An epoxy foam comprising a plurality of resins, a plurality of curing agents, at least one blowing agent, at least one surfactant and optionally at least one filler and the process for making. Preferred is an epoxy foam comprising two resins of different reactivities, two curing agents, a blowing agent, a surfactant, and a filler. According to the present invention, an epoxy foam is prepared with tailorable reactivity, exotherm, and pore size by a process of admixing a plurality of resins with a plurality of curing agents, a surfactant and blowing agent, whereby a foamable mixture is formed and heating said foamable mixture at a temperature greater than the boiling temperature of the blowing agent whereby said mixture is foamed and cured.
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