Abstract: The invention pertains to tertiary amines used as catalysts for the preparation of polyurethane foams prepared via the catalytic reaction of a polyisocyanate with a polyol in the presence of blowing agents, etc. The tertiary amine catalysts are prepared by reacting an olefinic nitrile with aliphatic polyol having at least secondary hydroxyl functionality in a ratio less than stoichiometric for providing cyanoalkylated polyol having residual hydroxyl functionality. The resulting cyanoalkylated polyol then is reacted with a secondary amine under conditions for effective reductive alkylation.The tertiary amine catalysts, because of residual secondary hydroxyl functionality, provide for uniform dispersion within a polyurethane, formulation; they provude for additional or extended pot life in polyurethane formulations at temperature below reaction condition, and they are bound by reaction on cure.

Abstract: The invention pertains to tertiary amines used as catalysts for the preparation of polyurethane foams prepared via the catalytic reaction of a polyisocyanate with a polyol in the presence of blowing agents, etc. The tertiary amine catalysts are prepared by reacting an olefinic nitrile with aliphatic polyol having at least secondary hydroxyl functionality in a ratio less than stoichiometric for providing cyanoalkylated polyol having residual hydroxyl functionality. The resulting cyanoalkylated polyol then is reacted with a secondary amine under conditions for effective reductive alkylation.The tertiary amine catalysts, because of residual secondary hydroxyl functionality, provide for uniform dispersion within a polyurethane formulation; they provide for additional or extended pot life in polyurethane formulations at temperatures below reaction condition, and they are bound by reaction on cure.

Abstract: A method for preparing a polyurethane foam article in a mold by applying to a mold surface a water-based mold release composition which includes a release effective system which is in a solid (hardened) state at the mold pour temperature and a liquid state at the demold temperature, pouring a polyurethane foam composition into the mold, curing the foam composition and demolding the foam article. The use of such release effective system in the aqueous mold release composition provides for a reduction in surface defects of the polyurethane foam article.Also disclosed is the incorporation of a poly(siloxane-glycol) surfactant having a cloud point ranging from 25.degree.-50.degree. C. into a water-based mold release composition including an aqueous emulsion or dispersion of at least one release effective substance and desirably at least one emulsifying agent provides for improved surface quality of the foam product.

Abstract: The incorporation of a poly(siloxane-glycol) surfactant having a cloud point ranging from 25.degree.-50.degree. C. into a water-based mold release composition comprising an aqueous emulsion or dispersion of at least one release effective substance and desirably at least one emulsifying agent provides for improved surface quality of the foam product.Also disclosed is a method for preparing a polyurethane foam article in a mold by applying to a mold surface a water-based mold release composition which comprises a release effective system which is in a solid (hardened) state at the mold pour temperature and a liquid state at the demold temperature, pouring a polyurethane foam composition into the mold, curing the foam composition and demolding the foam article. The use of such release effective system in the aqueous mold release composition provides for a reduction in surface defects of the polyurethane foam article.

Abstract: Flexible polyurethane foams are prepared from polyols containing 0.1 to 5.0 percent by weight of an inorganic filler such as fumed silica having a pH value of 6-8.5 and an effective particle size of less than 7 microns. Foams molded from such polyols exhibit in some instances an improvement in some of the strength properties and do not alter substantially, the mold fill time. In addition, there is an improvement in foam porosity (air flow) as well as a reduction in the force required to crush foam articles.

Abstract: An improved process for the preparation of flexible polyurethane foams which comprise conducting the foaming in the presence of a delayed action catalyst and an inorganic filler having a pH 5 to 10, preferably 6 to 8, and an average particle size of 2-30 microns, preferably 5-15 microns. The process is suitable for slabstock and molded foams.