Abstract: Carbon nanotubes are dissolved in organic solutions by attaching an aliphatic carbon chain (which may contain aromatic residues) so as to render the carbon nanotubes soluble.

Abstract: A new polyol family for the manufacture of novel polyurethane systems, preferably of polyurethane reactive hot melt adhesives is disclosed. The polyol(s) are reactive modifiers that enhance the properties of polyurethane systems. The inventive polyols are the reaction product of a monocarboxylic acid, a polycarboxylic acid and a polyhydric alcohol. The polyol of the present invention is used to produce urethane polymers, preferably polyurethane reactive hot melt adhesives by reacting the polyol with polyfunctional isocyanates. A method for producing the polyol, the urethane polymer as well as the polyurethane reactive hot melt adhesives is also provided.

Abstract: The invention concerns a two-component coating agent with a) a water dilutable binder component of a polyester resin base and/or polyacrylate resin base, whereby the polyester and/or polyacrylate resin has a content of hydroxyl groups of 2.5 to 8% by weight OH and b) an aqueous organic polyisocyanate component of at least one polyisocyanate with free isocyanate groups which is prepared ready for use for a limited time by the stirring of the polyisocyanate component b) into the binder component a) and hardens by cross-linking of the binder component with the polyisocyanate to the binder components according to the invention are provided as aqueous emulsions of a water insoluble carboxylate-free and sulfanate-free polyester resin and/or polyacrylate resin, whereby the emulsion is produced with the aid of an emulsifier added to the polyester or polyacrylate resin. The subject of the invention is, further, a process for producing the water-dilutable binder component a).

Abstract: A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C4-C6 hydrocarbon blowing agent, and an oxyethylated fatty alcohol compatibilizing agent having an HLB of from about 7 to about 12. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.

Abstract: Dispersion-stable polymeric acid functional polyols and dispersions of such materials, a method for improving the long term storage dispersibility and hydrolytic resistance of an acid functional polyol and a method for making a water-borne polyurethane, as well as personal care and industrial lubricants, using such improved acid functional polymeric polyols are provided. The polymeric acid functional polyols are reaction products of reaction mixtures including a base polyol having at least one of a terminal secondary and/or tertiary hydroxyl group and an aromatic anhydride.

Abstract: A polyol solution containing one or a combination of a benzoate glycol adduct, a substituted benzoate glycol adduct, a napthenate glycol adduct, a substituted naphthenate glycol adduct, a toluate glycol adduct, or a substituted toluate glycol adduct, and a closed cell, rigid polymer foam formed as a reaction product of the polyol solution, which foam comprises the reaction product of a polyisocyanate and an isocyanate-reactive component in the presence of a catalyst and a hydrogen-containing blowing agent or mixture of hydrogen-containing blowing agents, wherein the isocyanate-reactive component comprises a mixture of a hydroxy terminated polyester and a polyester comprised of the benzoic acid glycol adduct, toluic acid glycol adduct, or napthoic acid glycol adduct Foams prepared from the mixture have superior thermal conductivity, lower flammability, and higher stability of the emulsified liquid reactants prior to polymerization.

Abstract: The present invention relates to polyester polyols having a hydroxyl number of 60 to 400, which are esterification products of a) an alcohol component containing one or more aliphatic or cycloaliphatic alcohols having at least 3 hydroxyl groups and 3 to 8 carbon atoms with b) a carboxylic acid component containing itaconic acid, maleic acid, their anhydrides and/or fumaric acid, provided that at least 10 mole % of either component a) or component b) is an aliphatic or cycloaliphatic, saturated or unsaturated monoalcohol or monocarboxylic acid having 1 to 18 carbon atoms. The present invention also relates to two-component polyurethane coating compositions containing these polyester polyols and lacquer polyisocyanates as the binder and to their use for coating substrates, in particular automotive substrates.

Abstract: A process for preparing hydrocarbon blown rigid polyurethane foam using a novel compatibilizing agent. The compatibilizing agent is an alkoxylate adduct of a triglyceride with a hydroxyl value of about 100 or less. The triglyceride adduct has an ethylene oxide content of at least 40% by weight thereof. These adducts may be used alone or in mixture with other compatibilizers. The compatibilizers increase the stability of rigid foam formulation emulsions containing greatly increased hydrocarbon blowing agent levels while showing little or no adverse affect to physical properties of foams prepared therewith.

Abstract: Premixes of a polyol suitable for polyurethane or polyisocyanurate foam preparation and 1,1,1,3,3-pentafluoropropane require no stabilizer to inhibit reaction between the fluorocarbon and the polyol. These premixes are useful for polyurethane and polyisocyanurate foam preparation.

Abstract: The invention relates to aqueous emulsions of peroxyesters comprising an anti-freeze agent, a polyvinyl acetate with a degree of hydrolysis between 45 and 68%, and a non-ionic surfactant with an HLB value greater than 16 selected from alkylene oxide block-copolymers, ethoxylated fatty alcohols, and ethoxylated fatty acids. The emulsions are safe, storage stable, and generally applicable.

Abstract: Process for making rigid polyurethane or urethane-modified polyisocyanurate foams comprising the step of reacting an organic polyisocyanate composition with an isocyanate-reactive composition comprising a polyester polyol in the presence of an amine catalyst characterised in that the pKa of the conjugated ammonium salt of said amine is less than 12.

Abstract: A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C4-C6 hydrocarbon blowing agent, and an oxyethylated fatty acid or fatty alcohol compatibilizing agent having an HLB of from about 7 to about 12. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.

Abstract: A water slurry process is used to prepare a prepreg and to manufacture articles from macrocyclic polyester oligomers. In one embodiment, a process for preparing a water suspension of macrocyclic polyester oligomers includes the steps of contacting a macrocyclic polyester oligomer and a polymerization catalyst with water and a surfactant, and mixing the macrocyclic polyester oligomer and polymerization catalyst with water and the surfactant thereby forming a suspension. In another embodiment, a process for impregnating macrocyclic polyester oligomers for polymerization includes the steps of providing a suspension of a macrocyclic polyester oligomer and a polymerization catalyst in water, applying the suspension to a base material, drying to remove water from the suspension, and pressing the dried suspension to a desired form. In yet another embodiment, a composition of macrocyclic polyester oligomer includes a macrocyclic polyester oligomer, a polymerization catalyst, and water.

Abstract: A polyester polyol composition comprising a phthalic anhydride-initiated polyester polyol, a C4-C6 hydrocarbon blowing agent, and an alkylene oxide modified silicone glycol compatibilizing agent having an HLB of from about 5 to about 8 is disclosed. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties. An alkylene oxide and isocyanate modified silicone glycol compatibilizing agent is also disclosed.

Abstract: An organometallic composition comprises a complex of at least one metal selected from the group consisting of titanium, zirconium and hafnium and an acetoacetate ester in which the molar ratio of Ti or Hf to acetoacetate ester is in the range 1:2.5 to 1:10 or the molar ratio of Zr to acetoacetate ester is in the range 1:4.5 to 1:10 and said acetoacetate ester is an ester of an alcohol containing 1 to 6 carbon atoms. The organometallic composition is useful in polyisocyanate compositions, particularly those used as binders for lignocellulosic materials, and polyisocyanate compositions containing the organometallic compositions of the invention have good stability on storage.

Abstract: Provided herein are subcombinations from which polyurethane foams and polyurethane foams containing polyisocyanurates may be prepared. The subcombinations are unique in that they contain components which synergistically act towards promoting compatibility between a blowing agent and the remaining components of the formulation. Through the use of the teachings herein, blowing agent concentrations in excess of 25% by weight of the total subcombination may be incorporated.

Abstract: Process for making rigid polyurethane or urethane-modified polyisocyanurate foams comprising the step of reacting an organic polyisocyanate composition with an isocyanate-reactive composition comprising a polyester polyol in the presence of an amine catalyst characterized in that the pKa of the conjugated ammonium salt of said amine is less than 12.

Abstract: To sufficiently stabilize a hydroxyalkyl (meth)acrylate in spite of its easily polymerizable property, a hydroxyalkyl saturated-carboxylate and/or alkylene glycol as well as a phenol compound is added thereto.