Abstract: A paint formulation for highway pavement marking is disclosed which comprises (I) a heat stable thermoplastic phenolic resin is prepared by (A) reacting (1) the reaction product of (a) at least one epoxy resin having an average of more than one vicinal epoxy group per molecule such as a diglycidyl ether of bisphenol A with (b) one or more polyhydric phenols such as bisphenol A; and optionally (2) one or more polyhydric phenols such as bisphenol A; with (B) a material having only one vicinal epoxy group per molecule such as the glycidyl ether of t-butyl phenol or mixture of such materials; in the presence of an effective quantity of a suitable catalyst such as ethyltriphenylphosphonium acetate acetic acid complex; and (II) at least one of (A) one or more pigments, (B) one or more dyes; (C) one or more fillers; or (D) any combination thereof.

Abstract: A heat stable thermoplastic phenolic resin is prepared by (I) reacting (A) the reaction product of (1) at least one epoxy resin having an average of more than one vicinal epoxy group per molecule such as a diglycidyl ether of bisphenol A with (2) one or more polyhydric phenols such as bisphenol A; and optionally (B) one or more polyhydric phenols such as bisphenol A; with (II) a material having only one vicinal epoxy group per molecule such as the glycidyl ether of t-butyl phenol or mixture of such materials; in the presence of an effective quantity of a suitable catalyst such as ethyltriphenylphosphonium acetate.acetic acid complex.

Abstract: An advanced epoxy resin is prepared by reacting in the presence of a suitable catalyst such as ethyltriphenyl phosphonium acetate.acetic acid complex (A) a mixture containing (1) a polyglycidyl ether of a material containing at least two aliphatic hydroxyl groups per molecule such as a diglycidyl ether of a polyoxypropylene glycol and (2) a dicarboxylic acid such as malonic acid with (B) a dihydric phenol such as bisphenol A. These advanced epoxy resins are useful in the preparation of automobile paints, exterior coatings for beverage cans, coil coatings and adhesives.

Abstract: The viscosity of epoxy resins and phenoxy resins having an average weight average molecular weight of from about 1,700 to about 100,000 and containing an average of at least about 4.5 aliphatic hydroxyl groups per molecule is reduced by reacting said epoxy or phenoxy resin with a trihalomethyl acyl aromatic compound such as trichloroacetophenone in the presence of a tertiary amine such as triethylamine. These modified resins have particular utility in the preparation of coatings, adhesives, laminates, flooring and the like.

Abstract: Epoxy resins are prepared by reacting a mixture of (A) a diglycidyl ether of a dihydric aliphatic material, (B) a polyglycidyl ether of a polyhydric phenol having an average of at least about 2.6 glycidyl ether groups per molecule and optionally (C) a diglycidyl ether of a dihydric phenol with a dihydric phenol in the presence of a catalyst.Coating compositions containing the aforementioned epoxy resins have improved chip resistance, chemical resistance or pencil hardness when cured.

Abstract: The increase in hydrolyzable halide content in the preparation of advanced epoxy resins is decreased by conducting the advancement in the presence of an unsaturated organic compound.

Abstract: Properties of room temperatures cured epoxy resin coatings are improved by hydrolyzing at least a portion of the epoxy groups.

Abstract: High solids coatings are prepared from (1) adducts of a polyepoxide and a polyamine and (2) a polyisocyanate blocked with a ketoxime or lactam.

Abstract: Epoxy resins are hydrolyzed in the absence of substantial quantities of an organic solvent and in the presence of oxalic acid and a phosphonium compound.

Abstract: High molecular weight epoxy resins containing hydrolyzed epoxy groups are prepared by reacting (A) a low molecular weight epoxy resin and (B) a hydroxyl-containing compound in the presence of (C) water (D) a hydrolysis catalyst and (E) a catalyst for effecting the reaction between (A) and (B).