Abstract: The reaction rate of the process for making nonlinear polyesters, i.e., conventional alkyds, is accelerated by using relatively large proportions of solvent, e.g., 15-50% by weight of an aromatic or ketonic high boiler, and, optionally, an esterification catalyst, e.g., tin oxalate. The process results in alkyds having more evenly distributed molecular weights with significantly reduced reaction times and at lowered reaction temperatures with consequent energy savings.

Abstract: Stable coating compositions are made from an aqueous dispersion of an alkyd resin (20-80% by weight of solids) neutralized to a pH of about 7.5 with ammonia or a volatile amine by forming therein an emulsion polymer (80-20% by weight of solids) of one or more vinyl monomers. When coated on a substrate, the compositions dry readily like vinyl emulsion polymers but with a glossy and durable finish like the relatively cheap alkyds. Free radical catalysts, e.g., peroxides, may be encapsulated during the emulsion polymerization and remain stable until evaporation of water.

Abstract: Water-borne alkyds containing polybasic acids, a sulfonated aromatic acid, or equivalent, e.g., the sodium salt of 5-sulfoisophthalic acid, polyhydric alcohols, and fatty acids, are prepared in a two-step process by first reacting the carboxylic acids and the alcohols until a clear solution is obtained and then adding and reacting the fatty acid to achieve a desired relatively low acid number. These alkyd products are water dispersible without the need for amine stabilization and form protective films on substrates.

Abstract: A high-solids coating composition containing an unsaturated fatty acid alkyd resin, an alkyl dimethacrylate or trimethacrylate monomer, a protected cobalt oxime catalyst, and a polar solvent is mixed with a peroxide just before application to improve cure.

Abstract: A high-solids coating composition containing an unsaturated fatty acid alkyd resin, an alkyl dimethacrylate or trimethacrylate monomer, a protected cobalt oxime catalyst, and a polar solvent. The di- or trimethacrylate monomer crosslinks with the alkyd and becomes part of the solid paint film.