Abstract: A method of making polymer polyols is disclosed wherein a relatively low molecular weight liquid polymer of an ethylenically unsaturated monomer is mixed with a polyol and crosslinked in the polyol. The relatively low molecular weight polymer which is mixed in the polyol may have a variety of microstructures since the low molecular weight polymer was prepared separate from the polyol.

Abstract: The invention relates to reaction injection molded elastomers of improved green strength containing polyurea linkages derived from high molecular weight amine terminated polyethers, a chain extender, a polyisocyanate and a low molecular weight organic acid. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.

Abstract: The invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers, a chain extender, a polyisocyanate and a high molecular weight organic acid which add green strength and aid mold release. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.

Abstract: The invention relates to reaction injection molded elastomers of improved green strength containing polyurea linkages derived from high molecular weight amine terminated polyethers, a chain extender, a polyisocyanate and an anhydride. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.

Abstract: The invention relates to reaction injection molded elastomers derived from high molecular weight active hydrogen containing materials, a chain extender, a polyisocyanate and an acid amide as an internal mold release agent imparting superior hot tear strength. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.

Abstract: The adhesion properties of amine cured epoxy resins are unexpectedly enhanced by addition of a certain combination of high and low molecular weight polyoxyalkylene polyamines. The adhesively superior epoxy resin composition comprises a vicinal polyepoxide, a curing amount of a combination of about 85 wt. % or more of certain polyoxyalkylene polyamines having a molecular weight of less than about 450 and 15 wt. % or less of a polyoxyalkylene polyamine of greater than two primary amine functionality and a molecular weight of about 5,000 and above.

Abstract: The invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers and/or high molecular weight polyols, a chain extender, a polyisocyanate and an epoxy modified filler material. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.

Abstract: The invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers having greater than 50 percent of their active hydrogens in the form of amine hydrogens, low molecular weight amine terminated polyethers and a polyisocyanate. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.

Abstract: The invention is a method for making reaction injection molded polyurethane of improved properties and decreased catalyst usage. The product is formulated by placing the tin catalyst in the A-component (isocyanate component) rather than in the B-component (polyol side). Reaction injection molded elastomers are useful as molded articles of commerce including, but not limited to, vehicle body parts.

Abstract: The invention is a method of making a molded reaction injection molded elastomer. The reaction injection molded (RIM) elastomer is made by injecting via a RIM machine into a mold cavity of the desired configuration, a formulation comprising in the first stream amine terminated polyethers of greater than 1,500 molecular weight, a chain extender, and in the second stream methylene bis(phenylisocyanate) with a 2,4' isomer of greater than about 10%. RIM elastomers are useful, for example, for automobile body parts.

Abstract: A method of improving the physical properties of high density reinforced reaction injection molded microcellular or solid elastomers is disclosed. The method involves placing an inert filler material wholly in the isocyanate component of a two component reaction system where the other component contains predominantly polyol before mixing the components to effect reaction. This modification will result in an improvement in tensile strength and thermal dimensional stability when compared to placing the inert filler material in the polyol component before reaction.

Abstract: The invention relates to reaction injection molded elastomers containing a major amount of polyurea linkages derived from high molecular weight amine terminated polyethers, an aromatic diamine chain extender and a polyisocyanate. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.

Abstract: The invention relates to reaction injection molded elastomers containing a major amount of polyurea linkages derived from high molecular weight amine terminated polyethers, an aromatic diamine chain extender and a polyisocyanate. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.

Abstract: The invention is a method of making a molded reaction injection molded elastomer which will release from its mold with reduced frequency of application of external mold release agents. The reaction injection molded (RIM) elastomer is made by injecting exactly two streams via a RIM machine into a mold cavity of the desired configuration, a formulation comprising in the first stream a high molecular weight polyhydric polyether, a low molecular weight active hydrogen containing compound of at least two functionality and an internal mold release agent, and in the second stream an aromatic polyisocyanate and tin catalyst in an amount equal to 100% of the tin catalyst present in the formulation. The resulting RIM elastomer may be removed from the mold easily. RIM elastomers are useful, for example, for automobile body parts.

Abstract: The invention is a method for making reaction injection molded polyurethane of improved paintability properties. The product comprises the reaction product of a high molecular weight polyhydric polyether, a low molecular weight active hydrogen containing compound of at least two functionality, a polyisocyanate and a catalyst combination comprising N,N-Dimethylethanolamine, dibutyltin dilaurate and an alkyltin mercaptide. This catalyst combination results in improved processing, a minimum of surface defects, excellent green strength and improved paintability using certain paints. Reaction injection molded elastomers are useful as molded articles of commerce including, but not limited to, vehicle body parts.

Abstract: The invention is a method for making reaction injection molded polyurethane of improved paintability properties. The product comprises the reaction product of a high molecular weight polyhydric polyether, a low molecular weight active hydrogen containing compound of at least two functionality, a polyisocyanate and a catalyst combination comprising methyldiethanolamine, dibutyltin dilaurate and an alkyltin mercaptide. This catalyst combination results in improved processing, a minimum of surface defects, excellent green strength and improved paintability using certain paints. Reaction injection molded elastomers are useful as molded articles of commerce including, but not limited to, vehicle body parts.

Abstract: The invention is a method for making reaction injection molded polyurethane of improved paintability properties. The product comprises the reaction product of a high molecular weight polyhydric polyether, a low molecular weight active hydrogen containing compound of at least two functionality, a polyisocyanate and a catalyst combination comprising N-hydroxypropyl-N',N',N",N"-tetramethyliminobispropylamine, dibutyltin dilaurate and an alkyltin mercaptide. This catalyst combination results in improved processing, a minimum of surface defects, excellent green strength and improved paintability using certain paints. Reaction injection molded elastomers are useful as molded articles of commerce including, but not limited to, vehicle body parts.

Abstract: The invention covers a method for making reaction injection molded polyurethanes of improved properties. The elastomeric products having superior heat distortion and tear properties comprise the reaction product of an aromatic polyisocyanate, a high molecular weight polyol and a chain extending agent. Said polyol providing said improved properties is a poly(oxybutyleneoxyethylene) glycol having a molecular weight range of about 2,000-6,000. The polyurethane elastomer is prepared by injecting the above three agents through a RIM head into a mold cavity of the desired configuration. Reaction injection molded elastomers are useful as molded articles of commerce including, but not limited to, vehicle body parts.

Abstract: A stable emulsion of a high molecular weight polyol and either ethylene glycol or 1,4-butane diol is made by adding to the mixture an ethylene oxide/propylene oxide copolymer diol having an average molecular weight of above about 12,000 and an ethylene oxide content of from about 70% to 90%. The stable emulsion is useful as a reactant in RIM polyurethane plastics.

Abstract: The invention is a method for making reaction injection molded polyurethane of improved properties. The product comprises the reaction product of a high molecular weight polyhydric polyether, a low molecular weight active hydrogen containing compound of at least two functionality, a polyisocyanate and a catalyst combination comprising a weak tertiary amine, a fast gelation organo tin compound and a delayed action organo tin catalyst. This catalyst combination results in improved processing, a minimum of surface defects and excellent green strength. Reaction injection molded elastomers are useful as molded articles of commerce including, but not limited to, vehicle body parts.