Latent, curable, catalyzed mixtures of epoxy-containing and phenolic-hydroxyl-containing compounds containing compounds or complexes formed from contacting organic phosphines or arsines with weak nucleophilic acids

Claim 1

A composition comprising (A) at least one compound containing an average of more than one epoxide group per molecule; and (B) at least one of ( 1) the product resulting from contacting (a) at least one organic arsine or organic phosphine compound, said organic phosphine compound being represented by the following formula III ##STR5## wherein each R, R 1 and R 2 is independently a hydrocarbyl group having from 1 to about 18 carbon atoms or two of said R, R 1 , or R 2 groups can combine to form a heterocyclic ring, and Z is P, with (b) an inorganic acid having a weak-nucleophilic anion or a combination of said acids; or (2) the product resulting from contacting (a) at least one adduct of an acid having a relatively strong-nucleophilic anion and an organic phosphine or arsine compound with (b) an inorganic acid or metal salt of an inorganic acid, said acid having a weak-nucleophilic anion or a combination of said acids or metal salts; wherein (i) components (a) and (b) are contacted in quantities which permit the composition to satisfy the viscosity requirements of the composition after storage at 50° C. for 14 days; and (ii) the mixture of components (A), and (B), when dissolved in 20 to 40 percent by weight of a suitable solvent or solvent mixture, has a viscosity measured at 25° C. of 75% or less than the viscosity of a like composition except that the catalyst consists only of component (a), said viscosity being determined after storage for 14 days at 50° C.; and wherein component (B1a) is not triphenylphosphine when component (B1b) is tetrafluoroborate.