The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 1978
Filed:
Jul. 07, 1975
Applicant:
Inventors:
William T Gormley, Pittsburgh, PA (US);
Gerald J Gillespie, Westfield, NJ (US);
Assignee:
Koppers Company, Inc., Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08G / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 / ; 2608 / ;
Abstract
Thermoset epoxy foams are produced from an epoxy resin, delta-1-tetrahydrophthalic anhydride, and an amine accelerator. These compounds are mixed in resin-foaming amounts to produce a foamable mixture to which typical foam additives like auxiliary blowing agents, surfactants, microscopic spheres, etc., may also be added. This foamable mixture is heated at a temperature of at least 115.degree. C. to foam and cure the mixture to produce thermoset epoxy foams.