Abstract: A method of making a sheet metal fan blade having a flattened mounting pad. The blade is to be attached to a flat spider arm of a fan hub. According to the method, a fan blade blank workpiece of cylindrical stock and of any desired outline (such as rectangular, trapezoidal, etc.) is simultaneously provided with a longitudinally running rib and a flat pad portion by stamping. In this manner, the outline of the blade is not distorted by stamping the cylindrical blank to form the flat mounting pad.

Abstract: High solids, low energy cure coating compositions of aliphatic polyepoxides, monocarboxylic acid compounds as initiator and stannous salts as catalysts.

Abstract: A poly(vinyl chloride) resin composition comprised of an admixture of poly(vinyl chloride) resin and a clear or translucent polymeric material comprised of a non-uniform copolymer comprised of acrylonitrile, styrene and acrylate ester. The clear polymeric ASA material is a good impact modifier for PVC. The admixture contains from 3 to 15 percent by weight, based on the admixture, of the clear polymeric material. The clear polymeric material has a weight ratio of acrylonitrile and styrene acrylonitrile, styrene and acrylate ester which is between about 40 to 60 and about 60 to 40. The PVC resin combination, in dry form, can be conventionally hot processed or fabricated.

Abstract: High solids coating or ink compositions comprising blends of low molecular weight acrylic copolymers having pendant carboxyl groups and aliphatic polyepoxides.

Abstract: High solids coating compositions comprising a polycaprolactone derivative and a mixture of a methylolated melamine and a low molecular weight polyol; and, optionally, solvent and catalyst. The polycaprolactone derivative used in the coating compositions can be (A) a polycaprolactone polyol; or (B) the reaction product of a polycaprolactone polyol and an anhydride of a polycarboxylic acid; or (C) the reaction product of a polycaprolactone polyol, a polyisocyanate and an anhydride of a polycarboxylic acid; or (D) the reaction product of a polycaprolactone polyol, a diepoxide and an anhydride of a polycarboxylic acid; the polycaprolactone polyol referred to in the above four classes, Types A to D, has an average of at least two hydroxyl groups in the molecule, a hydroxyl number of from about 15 to about 600 and an average molecular weight of from about 290 to about 6,000. The carboxylic acid anhydride mentioned has at least one intramolecular carboxylic anhydride group.

Abstract: Water insoluble adducts are produced comprising the reaction product of a polycaprolactone polyol and an anhydride of a polycarboxylic acid. The polycaprolactone polyol reacted with the anhydride of the polycarboxylic acid has an average of at least two hydroxyl groups in the molecule, a hydroxyl number of from about 15 to 600 and an average molecular weight of from about 290 to about 6,000. The carboxylic acid anhydride has at least one intramolecular carboxylic anhydride group. These water insoluble adducts on reaction with an inorganic or organic base produce water soluble, carboxyl modified oligomer addition reaction products which are eminently suitable for the production of aqueous coatings compositions. Exceptionally good coatings compositions are obtained when a crosslinker is present in the coating composition.

Abstract: High solids compositions, useful as inks or coatings, comprising a mixture of a polycaprolactone derivative and a polyepoxide crosslinking agent. There can optionally be present an organic isocyanate, catalyst and solvent. The polycaprolactone derivative used in the composition is the reaction product, or adduct, of a polycaprolactone polyol and an intramolecular carboxylic acid anhydride; it is water insoluble.

Abstract: Water insoluble polycaprolactone-epoxide adducts are produced comprising the reaction product of a polycaprolactone polyol, a diepoxide and an anhydride of a polycarboxylic acid. The polycaprolactone polyol reacted with the diepoxide and the anhydride of the polycarboxylic acid has at least two hydroxyl groups in the molecule, a hydroxyl number of from about 15 to about 600 and an average molecular weight of from about 290 to about 6,000. The carboxylic acid anhydride has at least one intramolecular carboxylic anhydride group. These water insoluble polycaprolactone-epoxide adducts on reaction with an inorganic or organic base produce water soluble, carboxyl modifier polycarprolactone-epoxide oligomer addition reaction products which are eminently suitable for the production of aqueous coatings compositions. Exceptionally good coatings compositions are obtained when a crosslinker is present in the coating composition.

Abstract: Water insoluble urethane adducts are produced comprising the reaction product of a polycaprolactone polyol, a polyisocyanate and an anhydride of a polycarboxylic acid. The polycaprolactone polyol reacted with the polyisocyanate and the anhydride of the polycarboxylic acid has an average of at least two hydroxyl groups in the molecule, a hydroxyl number of from about 15 to about 600 and an average molecular weight of from about 290 to about 6,000. The carboxylic acid anhydride has at least one intramolecular carboxylic anhydride group. These water insoluble urethane adducts on reaction with an inorganic or organic base produce water soluble, carboxyl modified urethane oligomer addition reaction products which are eminently suitable for the production of aqueous coatings compositions. Exceptionally good coatings compositions are obtained when a crosslinker is present in the coating composition.

Abstract: Latex compositions are obtained having improved properties comprising an acrylic latex and a water soluble, carboxyl modified oligomer as adduct reaction product. These adducts are produced by initially obtaining a water insoluble product which is (1) the reaction product of a polycaprolactone polyol and an anhydride of a polycarboxylic acid; or (2) the reaction product of a polycaprolactone polyol, a polyisocyanate and an anhydride of a polycarboxylic acid; or (3) the reaction product of a polycaprolactone polyol, a diepoxide and an anhydride of a polycarboxylic acid. In producing either of the above three types of adducts or products the polycaprolactone polyol used has an average of at least two hydroxyl groups in the molecule, a hydroxyl number of from about 15 to about 600 and an average molecular weight of from about 290 to about 6,000. The carboxylic acid anhydride has at least one intramolecular carboxylic anhydride group.

Abstract: Powder coating compositions of vinyl chloride polymers or blends thereof, which compositions have an average inherent viscosity of from about 0.2 to about 0.55 dl/gm, have been found that are useful for electrostatic spray coating to produce thin films.

Abstract: Powder coating compositions of copolymers of vinyl chloride and a glycidyl acrylyl compound containing a crosslinker for the oxirane groups of the acrylyl compound and the epoxy resin and a minor amount of a plasticizing epoxy resin have been produced having improved flow properties.