Abstract: The present invention discloses a method for the formation of a flexible slabstock polyurethane foam having substantially improved indentation force deflection and resilience characteristics while maintaining the other physical properties. The method comprises the steps of reacting a triol polyoxyalkylene polyether polyol having a plurality of internal blocks formed from oxyalkylene monomers with a plurality of terminal caps comprising ethylene oxide attached to said plurality of internal blocks, the internal blocks containing at least 80% by weight propylene oxide based on the total weight of all of the oxyalkylenes in said internal blocks and the amount of ethylene oxide in the terminal caps comprising from 5 to 25% by weight based on the total weight of the polyol, said polyol having a degree of unsaturation of less than or equal to 0.015 meq/g KOH with a polyisocyanate component in the presence of a catalyst and water as a blowing agent at a level of between 3 to 7% by weight.

Abstract: Thus, there is provided according to the present invention polyol compositions comprising (A) a polytetramethylene ether glycol, and (B) a trifunctional active hydrogen compound-initiated polyoxyalkylene polyether polyol having a degree of unsaturation of not greater than 0.04 milliequivalents per gram of said polyether polyol.

Abstract: The present invention discloses a method for the formation of and a flexible slabstock polyurethane foam having substantially improved indentation force deflection and resilience characteristics while maintaining the other physical properties. The method comprises the steps of: forming a polyol blend having a nominal functionality of at least 2.3 by combining at least one polyether polyol having a plurality of terminal ethylene oxide caps of from 5 to 25% by weight based on the total weight of the polyether polyol, a molecular weight of greater than or equal to 4000 Daltons, and an unsaturation of greater than 0.04 meq/g KOH; at least one graft polyether polyol having an equivalent weight of greater than 1000 Daltons, a solids content of at least 28%, and a plurality of terminal ethylene oxide caps of from 5 to 25% by weight based on the total weight of the graft polyether polyol; and at least one very low unsaturated polyether polyol having an unsaturation of less than or equal to 0.

Abstract: There is provided an sealant made with an isocyanate or hydroxyl terminated prepolymer made by reacting a stoichiometric excess of an organic polyisocyanate with polyols made of at least a polyoxyalkylene polyether triol or a mixture thereof with a polyoxyalkylene polyether diol. The triol or diol has within its structure the nucleus of an initiator compound, an internal blocks of oxypropylene groups, and external blocks of oxyalkylene groups, wherein the internal blocks of oxypropylene are between said nucleus and said external blocks, said external blocks are made of oxyalkylene groups derived from a C.sub.4 or higher alkylene oxide. The amount of the internal blocks of oxypropylene groups is from 25 weight percent to 80 weight percent based on the weight of all oxyalkylene groups and initiator in the prepolymer The triol or diol has a compatibility index of 25.degree. C. or less, and may be part of a two component or a one component moisture cured sealant.

Abstract: There is now provided a sealant and elastomer made with a polyol having an unsaturation level of 0.04 to 0.07, manufactured with a basic salt of an alkaline earth metal or a basic salt of cesium, such as cesium hydroxide. The elastomers and sealants made therefrom exhibit an increasing modulus of elasticity when strained from 100 percent elongation to 300 percent elongation. The reduced unsaturation polyols are simple and inexpensive to make while imparting good physical properties to the sealants and elastomers.

Abstract: Thus, there is provided according to the present invention polyol compositions comprising(A) a polytetramethylene ether glycol, and(B) a trifunctional active hydrogen compound-initiated polyoxyalkylene polyether polyol having a degree of unsaturation of not greater than 0.04 milliequivalents per gram of said polyether polyol.

Abstract: Thus, there is provided according to the present invention polyol compositions comprising(A) a polytetramethylene ether glycol, and(B) a difunctional active hydrogen compound-initiated polyoxyalkylene polyether polyol having a degree of unsaturation of not greater than 0.04 milliequivalents per gram of said polyether polyol.

Abstract: Thus, there is provided according to the present invention polyol compositions comprising(A) a polytetramethylene ether glycol, and(B) a difunctional active hydrogen compound-initiated polyoxyalkylene polyether polyol having a degree of unsaturation of not greater than 0.04 milliequivalents per gram of said polyether polyol.

Abstract: A polyol composition is provided which when reacted with and organic isocyanate, has good flow characteristics and makes an all water blown rigid polyurethane foam having good dimensional stability at low core densities of 1.1 pcf to 2.0 pcf. The polyol composition has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less, an average functionality of 3.1 or greater, and a hydroxyl number of 400 or more, a polyoxyalkylene polyether polyol having an average functionality from 1.5 to 3.1 and a viscosity of less than 800 cP at 25.degree. C., and a polyoxyalkylene polyether polyol having an average functionality of greater than 3.1 and an equivalent weight of greater than 130. The polyol composition also has water as the blowing agent, and further contains a blow catalyst, a delayed action gel catalyst, and preferably a cure catalyst and a surfactant.

Abstract: A polyol composition is provided which when reacted with an organic isocyanate, has good flow characteristics and makes a rigid polyurethane foam having good dimensional stability at low densities. The polyol composition has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less and a hydroxyl number of 400 or more, a polyoxyalkylene polyether polyol having an average functionality from 1.5 to 3.1 and a viscosity of less than 800 cP at 25.degree. C., and a polyoxyalkylene polyether polyol having an average functionality of greater than 3.1 and a viscosity of 5,000 cp or less at 25.degree. C. The polyol composition also has formic acid or a mixture of formic acid and water as blowing agents, and further contains a delayed action blow catalyst and a delayed action gel catalyst.

Abstract: A polyol composition is provided which when reacted with and organic isocyanate, has good flow characteristics and makes an all water blown rigid polyurethane foam having good dimensional stability at low core densities of 1.1 pcf to 2.0 pcf. The polyol composition has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less, an average functionality of 3.1 or greater, and a hydroxyl number of 400 or more, a polyoxyalkylene polyether polyol having an average functionality from 1.5 to 3.1 and a viscosity of less than 800 cP at 25.degree. C., and a polyoxyalkylene polyether polyol having an average functionality of greater than 3.1 and an equivalent weight of greater than 130. The polyol composition also has water as the blowing agent, and further contains a blow catalyst, a delayed action gel catalyst, and preferably a cure catalyst and a surfactant.

Abstract: There is now provided a closed cell rigid polyurethane foam having improved flame resistance by empolying a combination of an organo-phosphorus compound having at least two isocyanate reactive hydrogens with a secondary or tertiary mono-halogenated aliphatic hydrocarbon having three to six carbon atoms.

Abstract: A polyol composition is provided which when reacted with an organic isocyanate, has good flow characteristics and makes a rigid polyurethane foam having good dimensional stability at low densities. The polyol compostion has a polyol component which must have present a polyoxyalkylene polyether polyol having an equivalent weight of 130 or less and a hydroxyl number of 400 or more, a polyoxyalkylene polyether polyol having an average functionality from 1.5 to 3.1 and a viscosity of less than 800 cP at 25.degree. C., and a polyoxyalkylene polyether polyol having an average functionality of greater than 3.1 and a viscosity of 5,000 cp or less at 25.degree. C. The polyol composition also has formic acid or a mixture of formic acid and water as blowing agents, and further contains a delayed action blow catalyst and a delayed action gel catalyst.

Abstract: There is now provided a closed cell rigid polyurethane foam having improved flame resistance by empolying a combination of an organo-phosphorus compound having at least two isocyanate reactive hydrogens with a secondary or tertiary mono-halogenated aliphatic hydrocarbon having three to six carbon atoms.

Abstract: There is now provided a closed cell rigid polyurethane foam having improved flame resistance by empolying a combination of an organo-phosphorus compound having at least two isocyanate reactive hydrogens with a secondary or tertiary mono-halogenated aliphatic hydrocarbon having three to six carbon atoms.

Abstract: Polyurethane/polyisocyanurate foams with low K-factors and enhanced flammability properties as measured by the Butler Chimney test are produced through the use of a blowing agent composition comprising aliphatic hydrocarbon and a fully halogenated brominated halocarbon is a mole ratio of from 10:1 to 1:2.

Abstract: Polyurethane foams blown with a mixture of water, HCFC-22 or HCFC-141b, and a perfluorinated hydrocarbon having from 3 to 8 carbon atoms yields polyurethane and polyisocyanurate foams having exceptional physical properties, i.e., small and uniform cells, low initial K-factor, low aged K-factor, and high tensile strength. The low initial and aged K-factors are most unexpected when it is considered that significant amounts of water are used to blow the foam.

Abstract: Use of a ternary blowing agent mixture containing water, HCFC-22, and either or both of methylene chloride or 1,1,1-trichloroethane allows the preparation of rigid urethane and polyisocyanurate foams displaying good dimensional stability and low aged k-factors.

Abstract: It has been found that in addition to acting as an auxiliary blowing agent, various salts of formic acid may be used to tailor the reactivity characteristics of rigid, polyurethane foam formulation. Salts of particular interest are: ammonium formate, sodium formate, and potassium formate. By varying amounts and combinations of the above salts, characteristics of a formulation's reactivity such as cream time, gel time, rise time, and tack-free time may be manipulated.

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.