Abstract: Graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Processes for the preparation of these polymer dispersions employ fumarate derived polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol with a compound selected from the group consisting of maleic acid, maleic anhydride and fumaric acid and an alkylene oxide in the presence of salts and oxides of divalent metals. The polymer dispersions are prepared in the presence of a reaction moderator and employ 50 weight percent or more of acrylonitrile.

Abstract: White graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Improved processes for the preparation of these polymer dispersions employ either maleate or fumarate derived polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol in the presence of a chain transfer agent with a compound selected from the group consisting of maleic acid, maleic anhydride and fumaric acid and an alkyklene oxide in the presence of salts and oxides of divalent metals.

Abstract: This invention relates to alkylated vicinal toluenediamines and their use as chain extenders in the preparation of polyurethane elastomers.

Abstract: White graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Improved processes for the preparation of these polymer dispersions employ either maleate or fumarate derived polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol with a compound selected from the group consisting of maleic acid, maleic anhydride and fumaric acid and an alkylene oxide in the presence of salts and oxides of divalent metals.

Abstract: White graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Improved processes for the reparation of these polymer dispersions employ either isomerized maleate containing polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol, a polycarboxylic acid anhydride and an alkylene oxide in the presence of salts and oxides of divalent metals.

Abstract: Polyisocyanurate polymers are prepared by the polymerization of organic polyisocyanates in organic solvents employing trimerization catalysts. After deactivation of the catalysts and removal of the solvents, these polymers may be dispersed in polyols which are employed for the preparation of cellular and non-cellular polyurethane products displaying improved load bearing properties.

Abstract: Polyisocyanurate polymers are prepared by polymerization of polyisocyanates in organic solvents employing trimerization catalysts. The polyisocyanates are reacted with monofunctional active hydrogen compounds prior to polymerization or subsequent to the polymerization. These polymers may be dispersed in polyols for the preparation of cellular and non-cellular polyurethane products having improved physical properties.

Abstract: Finely-divided polymeric solids are prepared by free-radical polymerization on ethylenically unsaturated monomer or monomers in an organic solvent employing an alkylene oxide adduct of a styrene-allyl alcohol copolymer stabilizer.

Abstract: Stable graft polymer dispersions are prepared employing in situ free-radical polymerization of ethylenically unsaturated monomer or monomers in polyol in the presence of an alkylene oxide adduct of a styrene-allyl alcohol copolymer stabilizer.

Abstract: Low-viscous, stable polymer dispersions are prepared by blending a hydroxy-containing finely-divided solid polymer with a polyol having an equivalent weight between 500 and 10,000. The resulting dispersions are particularly useful in the preparation of polyurethanes having enhanced physical properties particularly load bearing or hardness, tensile strength and tear resistance.

Abstract: Low-viscous, stable polymer dispersions are prepared by blending a hydroxy-containing finely divided solid polymer with a polyol having an equivalent weight between 500 and 10,000. The resulting dispersions are particularly useful in the preparation of polyurethanes having enhanced physical properties particularly load bearing or hardness, tensile strength and tear resistance.

Abstract: Composites based on polyurethane foams heat sealed to a substrate are prepared from polyurethane foams employing a graft polyol as a component of the foam-forming reaction mixture. The resulting composites possess exceptional bonding strength.

Abstract: Graft copolymer dispersions of improved viscosity and superior particle size distribution are prepared by the in situ polymerization of vinyl monomers in unsaturation-containing polyols in the presence of a free-radical catalyst and certain chain transferring agents at temperatures below 100.degree. C. The dispersions are low viscous liquids which may be advantageously employed in the preparation of polyurethanes.

Abstract: Graft copolymer dispersions of low viscosity and improved particle size distribution are prepared by mixing a free radical catalyst and a vinyl monomer in a static mixer and thereafter adding the catalyst-monomer mix to a polyol. The dispersions are low viscous liquids which may be advantageously employed in the preparation of polyurethanes.

Abstract: Finely-divided dispersed solids are prepared by polymerizing in the presence of a free radical catalyst and an organic solvent a major amount of an ethylenically unsaturated monomer or mixture of monomers and a minor amount of a hydroxy-terminated organic compound having from one to eight hydroxyl groups, an equivalent weight of from 500 to 10,000 and containing a polymerizable carbon-to-carbon double bond. The resulting polymeric solids are particularly useful in the preparation of reinforced polymer compositions.

Abstract: Composites based on polyurethane foams heat sealed to a substrate are prepared from polyurethane foams employing a graft polyol as a component of the foam-forming reaction mixture. The resulting composites possess exceptional bonding strength.

Abstract: Highly-stable graft copolymer dispersions are prepared by the in situ polymerization in the presence of a free radical catalyst of a vinyl monomer in a polyol containing an essential amount of unsaturation. The dispersions are low-viscous liquids which may be advantageously employed in the preparation of flexible urethane foams having enhanced load-bearing properties.

Abstract: White graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Improved processes for the reparation of these polymer dispersions employ either isomerized maleate containing polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol, a polycarboxylic acid anhydride and an alkylene oxide in the presence of salts and oxides of divalent metals.