Patent ID: 8779032

Claim:
A curable composition comprising (i) at least one epoxy resin comprising at least one aromatic moiety or a cyclic moiety derivable by hydrogenating an aromatic moiety and wherein the epoxy resin does not contain an aromatic amine moiety, (ii) an epoxide hardener system comprising (a) a carboxylic acid anhydride, (b) a first amine having a melting point from about 30° C. to about 100° C. and containing at least one primary amine group; and (c) a second amine having a melting point of from about 50° C. to about 180° C. and having at least one primary amine group, wherein the first and second amines are selected such that they have a difference in melting points of at least 10° C. and wherein the first and second amines are contained in minor amounts by weight as compared to the carboxylic acid anhydride; (iii) a filler capable of reducing the density of the curable composition and, optionally, (iv) a lire-retardant system that includes a mixture of: (a) at least one compound selected from the group comprising alkaline earth metal hydroxides and aluminium group hydroxides, and (b) at least one phosphorous-containing material.