Patent ID: 7847026
Filing Date: 2010-12-07
Classification: C08G,C08L

Abstract:
1. A one part blend of uncured epoxy resins, comprising: a reaction product of one or more epoxy resins with one or more carboxyl terminated polybutadienes (CTB) and with one or more carboxyl terminated poly(butadiene-acrylonitrile)s (CTBN) or with one or more random pendant and terminal carboxyl functional poly(butadiene acrylonitrile)s (CTBNX) or with both said CTBN and said CTBNX, with the proviso, that the weight ratio of said CTBN or said CTBNX or both said CTBN and said CTBNX to said CTB is from about 1.0 to about 3.0, wherein said CTBN and said CTBNX have a nitrile content, independently, of from about 20% to about 40% by weight, and wherein the stoichiometric equivalence of the total amount of said epoxy resins to the total stoichiometric equivalence of said CTB, and said CTBN and said CTBNX is from about 2.0 to about 2.5, an amount of unreacted epoxy resin so that the total amount of said CTB and said CTBN and said CTBNX is from about 5 parts to about 40 parts by weight per 100 total parts by weight of said reacted and said unreacted epoxy resin; wherein said blend of said reacted product and said unreacted epoxy resin contains less than about 0.25 parts by weight of a catalyst per 100 total parts by weight of the total amount of all epoxies, CTB, CTBN, and/or CTBNX components; wherein said blend contains less than 40 parts by weight of one or more inorganic fillers per 100 total parts by weight of said reacted epoxy-CTB-CTBN and/or epoxy-CTB-CTBNX resin; and wherein said blend of said uncured reacted product and said unreacted epoxy resin are miscible upon storage.