Polyether diamide epoxy additives

摘要

Resistance to thermal shock of certain anhydride cured epoxy resins is unexpectedly enhanced by addition of certain polyether diamide additives. This superior resistance does not appreciably compromise heat deflection properties. The resins comprise a vicinal polyepoxide, a curing amount of certain bicyclic anhydride and an effective amount of a polyether diamide having terminal amido groups and a molecular weight of from about 2000 to about 3000.