Abstract: A two part composition comprising a Part A and a Part B, wherein Part A comprises an oligomer having both isocyanate and acrylate moieties, and an organic peroxide capable of generating free radicals upon decomposition; and Part B comprises a polyol, and a catalyst that can decompose the organic peroxide. In one form, the two part composition of a Part A and a Part B are in admixture. By combining Part A and Part B the isocyanate moieties react with the polyol to produce a combination of a urethane acrylate oligomer, organic peroxide and the catalyst. Then in either order, the combination is exposed to sufficient actinic radiation to polymerize at least a portion of the urethane acrylate oligomer; and the catalyst decomposes the organic peroxide thus generating free radicals, which free radicals polymerize at least a portion of the urethane acrylate oligomer.

Abstract: Dry-to-the-touch compositions containing a curable polymeric matrix and a curable anaerobic composition present within the polymeric matrix are disclosed. In a particularly desirable form, the compositions are moisture curable. The compositions are non-flowable at high temperatures and have an improved solvent resistance once cured.

Abstract: The present invention discloses a semicrystalline, thermoplastic polyurethane which is comprised of the reaction product of (1) a hydrophobic polyol, (2) a polyisocyanate, and (3) a linear chain extender containing 5 carbon atoms or 7 to 12 carbon atoms; wherein the hydrophobic polyol has a number average molecular weight which is within the range of about 1,000 to about 4,000; wherein the semicrystalline, thermoplastic polyurethane has a weight average molecular weight which is within the range of 50,000 to 1,000,000; and wherein the semicrystalline, thermoplastic polyurethane has a melting point which is within the range of 80° C. to 150° C. This hydrophobic thermoplastic polyurethane offers a unique array of characteristics that are highly desirable for utilization in manufacturing a variety of products. For instance, it can be used in overmolding soft grips onto consumer products, in adhesives, and in protective coatings.

Abstract: A hybrid resin composition is described, the composition comprising: A. An A part composition comprising an aliphatic polyfunctional isocyanate compound and a free radical polymerization initiator; and B. A B part composition comprising an ethylenically unsaturated, substantially water-free polyester polyol and a polyurethane catalyst. The A part composition can contain a non-interfering solvent, e.g., styrene, and the B part composition typically has an acid value of 5 or less (based on solids). For outdoor use, the B part composition is preferably free of tertiary hydrogens, ether glycols and terephthalic acid residues.

Abstract: The UV-curable aqueous coating composition is characterized by using a UV-curable aqueous emulsion obtained by urethane reaction with a mixture including a poly-carbonate polyol or polyester polyol; an isocyanate compound; a urethane-reactive carboxylic acid; a UV-curable acrylic oligomer having 2 to 9 functional acrylate groups; a UV-curable acrylic monomer; and a urethane-reactive acrylate without an organic solvent. The aqueous composition provides good environmental acceptability and satisfactory film properties comparable to those of the prior oily UV-curable coating composition and, therefore, it is useful for coating various plastics.

Abstract: To efficiently dry it, a nonionic alkylene oxide-type water-soluble resin is put into a container, then the container is degassed to a prescribed vacuum degree which is maintained while a dry gas having a dew point not higher than prescribed is introduced into the container at a rate not lower than prescribed. Minor volatiles are efficiently removed from the resin in an evaporation tank having a stirring blade. For protecting the dried resin from water, a dry gas is introduced into and air is purged from an empty packaging container whereafter the resin is charged into the container is sealed. By controlling solvent content and visocity of the resin and loading it into a temperature-controlled transportation container and/or unloading it out of the transportation container by the use of a pump, good subsquent processability of the resin and prevention of deterioration thereof are ensured.

Abstract: Acrylate, or methacrylate, or allylic, functionalized polyfluorooxetanes are disclosed for use in radiation curable coating compositions. These acrylate, or methacrylate, or allylic, functionalized polymers provide improvements in wetting and surface properties that have previously been provided by migratory chemicals such as waxes and oils. The partially or fully fluorinated side groups of the fluorooxetanes are believed to be disproportionately present at the interfaces between the coating and the substrate and between the coating and the atmosphere.

Abstract: The invention provides a two-part adhesive composition making it possible to mutually bond disk substrates within a relatively short time and to produce an optical disk, and an optical disk having a metal film, corrosion of which is restricted under a high-temperature high-humidity condition, and which is produced by using the two-part adhesive composition. A two-part adhesive composition of the invention comprises first and second parts each containing urethane acrylate having a polytetramethylene glycol skeleton and an acrylate having a hydroxyl group in its molecule, wherein the first part further contains a diacyl peroxide and the second part further contains a tertiary amine. Organic peroxide is preferably diacyl peroxide and a setting promoter is preferably a tertiary amine. Either one, or both, of the first and second parts may further contain a photo-polymerization initiator.

Abstract: The present invention provides polyester/polyurethane/vinyl dioxolane based coating compositions containing no or essentially no volatile organic components. Oligomers for forming the coating compositions of the present invention are vinyl dioxolane end-capped polyesters and polyurethane oligomers.

Abstract: The subject invention relates to a foundry binder system which cures in the presence of a volatile amine curing catalyst comprising (a) an epoxy resin,(b) an organic polyisocyanate, (c) a reactive unsaturated acrylic monomer or polymer, and (d) an oxidizing agent. The foundry binders are used for making foundry mixes. The foundry mixes are used to make foundry shapes which are used to make metal castings.

Abstract: Insoluble supports are prepared which possess high surface areas and efficiently dispersed isocyanate groups. These reactive supports are useful for covalently binding proteins which preferably are enzymes and provide catalysts for conducting organic reactions.

Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.

Abstract: Polyurethane elastomers with reduced gas permeability are prepared by reaction of:a) diisocyanates,b) compounds with a molecular weight of 500 to 10,000 having at least two hydrogen atoms that are reactive towards isocyanates,c) compounds with a molecular weight of 61 to 499 having at least two hydrogen atoms that are reactive towards isocyanates, and optionallyd) further auxiliaries and additives,characterized in thati) the ratio of the isocyanate groups in a) to the sum of the isocyanate-reactive groups in b) and c) is between 1:0.80 and 1:1.05 (isocyanate:isocyanate-reactive), andii) the compound b) contains 3 to 15% by wt.

Abstract: A thermal insulator of the present invention includes a foam containing solidified CO.sub.2 gas. A method for producing the thermal insulator includes the steps of: mixing a metal compound selected from the group consisting of a metal oxide and a metal hydroxide, water, a polyol component, and an isocyanate component to generate a mixture; foaming the mixture in a container to generate closed-cells made of a water-foamed polyurethane; and allowing CO.sub.2 gas generated during the foaming step to react with the selected metal compound to solidify the CO.sub.2 gas, thereby depressurizing the closed-cells in the closed-celled foam.

Abstract: The present invention relates to textile printing pastes containing modified polyisocyanates, modified polycarbodiimides, or trifunctional polyepoxides as crosslinking agents for the binders present therein.

Abstract: An isocyanate composition is made by using a 2-component catalyst system--one which initiates at room temperature and one which initiates at a temperature of at least 75.degree. C. and has a one-hour half-life temperature of at least 90.degree. C.; the composition has a room temperature stability of at least thirty days.

Abstract: The present invention relates to coating compositions which are suitable for preparing matt coatings and containA) an aqueous polymer dispersion which is capable of forming films at temperatures below 70.degree. C. andB) an aqueous polyurethane polyurea dispersion which is not film forming below 70.degree. C. and preferably has an average particle diameter above 350 nm, preferably from 500 to 1000 nm.The present invention is also directed to textile or leather substrates coated with these coating compositions.

Abstract: The present invention provides a composition comprising, as the essential components, an aromatic compound represented by the following general formula ##STR1## (m is an integer of 2-3, n is an integer of 1-3 and R is a hydrocarbon group of 3-6 carbon atoms or a hydrocarbon group of 3-6 carbon atoms containing a bivalent sulfur atom), an isocyanate compound and a radical polymerization initiator.Said composition is useful for producing a plastic lens having a high refractive index, a small specific gravity, excellent heat resistance and excellent processability.

Abstract: In an active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane, polyurethaneurea or polyurea elastomer by reaction injection molding, the improvement which comprises a mold release composition consisting essentially of (1) the reaction product of a mixture of a phenol compound, a tertiary amine, and a reactive epoxide and (2) a carboxy functional siloxane.

Abstract: In an active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane or polyurethane/urea elastomer by reaction injected molding, the improvement which comprises a mold release composition which is the reaction product of a C.sub.12 -C.sub.36 fatty acid, a tertiary amine having at least one C.sub.12 -C.sub.18 alkyl substituent and a C.sub.2 -C.sub.21 reactive epoxide.

Abstract: A continuous process for the preparation of an isocyanate-terminated prepolymer having an NCO content in the range from 2 to 15% by weight, said process comprising the steps of:(A) continuously delivering to a reaction zone an organic polyisocyanate composition and an isocyanate reactive compound having an average molecular weight of at least 1000 the relative proportions of isocyanate composition and isocyanate reactive compound being appropriate for the formation of a prepolymer having an NCO content in the indicated range;(B) allowing the isocyanate composition and the isocyanate reactive compound to react in the reaction zone to form an isocyanate-terminated prepolymer, and(C) continuously removing the prepolymer from the reaction zone.

Abstract: The invention comprises curing polyamic acid solutions into polyimide solutions by adding a hydrophilic reagent to a polyamic acid solution. The hydrophilic reagent is selected to have little or no reactivity with amines or carboxylic acids, and is of the type that will react with water to form by-products that shift the equilibrium between polyamic acid as a reactant and polyimide and water as products toward the production of polyimide.

Abstract: The invention relates to light-stabile, reactive two-component PUR paints which cure at room temperature and are comprised of:a) isocyanate prepolymers blocked with certain sterically hindered piperidine derivatives; andb) (cyclo)aliphatic polyamines and/or aminoamides;wherewith 1-1.4 blocked NCO groups are brought to reaction per amino group.

Abstract: A composition and method provide improved physical properties and cure speed of polyurethane precursors, with or without free radical polymerizable monomers or oligomers present, by use of a two component catalyst system. The resin blend can be activated with a latent organometallic catalyst combined with an organic peroxide which can be a hydroperoxide or an acyl peroxide to decrease the cure time while increasing the break energy and tangent modulus of the system.

Abstract: The use of a monomer as the solvent in both components of a urethane polymerization system eliminates the need for the expenditure of much energy to remove solvent from the cured resin. The exotherm of the urethane cure supplies the heat for the activation of a relatively thermally stable free radical catalyst which then catalyzes the curing of the monomer. The two component system is stable in storage.

Abstract: At least some of the isocyanate groups in the cured polyurethane sealant of this invention have the isocyanurate structure. A moisture-curing sealant composition of the invention comprises an active isocyanato-terminated isocyanate prepolymer containing a polyol component with a molecular weight of 2,000 to 20,000 and an isocyanurating agent. The sealant composition of the present invention is particularly excellent in initial bond strength due to sharp viscosity buildup.

Abstract: A two-component polyurethane composition has good shelf stability and the adhesive made by curing the same has good high temperature stability and no adhesion loss after high temperture bake. The base or prepolymer component containing a primary hydroxyl intermediate also has a sufficiently large excess of free isocyanate so that the ratio of free NCO groups in the prepolymer component to OH curative groups plus any amine groups in the curative component is generally from about 1.2 to about 2.0. The curative component contains a trimerization catalyst so that upon cure, isocyanurate units are produced. The system also contains molecular sieves, as well as phosphorous-type adhesion promoters.

Abstract: The present invention relates to a process for the production of olefinically unsaturated polyester resins containing at least 0.025 moles of urethane groups per 100 g of resin by reactingA) olefinically unsaturated polyester resins which contain alcoholic hydroxyl groups, have a molecular weight (M.sub.n) of 800 to 10,000, an acid vlaue of 0 to 50 and a hydroxyl number of 30 to 120, and are based on the reaction product ofI) a dicarboxylic acid component containing a) 90 to 100 mole percent of maleic acid, maleic anhydride and/or fumaric acid and b) 0 to 10 mole percent of another carboxylic acid andII) 1.1 to 1.5 moles, based on one mole of the dicarboxylic acid component, of a polyol component containing c) 0.1 to 0.5 moles of at least one saturated cycloaliphatic diol having 6 to 18 carbon atoms, d) 0.5 to 0.9 moles of at least one saturated aliphatic diol having 2 to 6 carbon atoms and e) 0.1 to 0.5 moles of at least one .beta.,.gamma.

Abstract: Improved two-component polyurethane adhesives contain an isocyanate and a stabilized epoxide and at least one isocyanate-reactive compound.

Abstract: Polyethers are disclosed which contain perfluoroalkyl groups and have the average formula ##STR1## wherein R.sup.1 is the same or different in the polymer mixture and represents hydrogen or a fluoro group,n has an average value of 4 to 12,a has an average value of 0 to 4,m has an average value of 2 to 18,x has an average value of 2 to 50 andy has an average value of 0 to 3.A method for the synthesis of the new polyols, which are usefull as surfactants and, with respect to the compounds of formula I, as polyol components in the synthesis of polyurethanes, is also disclosed.

Abstract: This invention relates to a process for manufacturing a spray urethane elastomer. More particularly it relates to a process for manufacturing a solventless, non-cellular spray urethane elastomer, which comprises spraying a partial prepolymer component having a high molar ratio of NCO/OH prepared from an organic polyisocyanate and from polytetramethylene ether glycol (PTMEG) having a molecular weight of 400 to 2000 and a resin component containing the PTMEG, a specified chain extender and an organobismuth compound catalyst onto a substrate by use of a two components high pressure spray machine.According to the present invention, spraying only of the stock solutions by use of the two components high pressure spray machine accomplishes coating and the stock solutions are cured in one second to ten and several seconds after being sprayed without producing cells even when thick-coated.

Abstract: A molded abrasive article comprising abrasive particles dispersed throughout and adhered within a crosslinked polyurethane binder matrix having a glass transition temperature greater than about 10.degree. C. and a glass transition temperature range of greater than about 70.degree. C.

Abstract: Disclosed herein are allylether-functional unsaturated polyester-urethanes and curable compositions containing the same.

Abstract: A process for making metal salt (ionomers) of carboxylic acid-containing mono- and polyether polyol addition products by (1) reacting maleic acid, fumaric acid, itaconic acid, or mixtures thereof with at least one polyhydroxy-containing mono- or polyether compound (e.g. a polyether diol or triol) in the presence of a peroxy-type free radical initiator to form a carboxylic acid group-containing addition product and (2) neutralizing said addition product with a sufficient amount of metal ions selected from the group consisting of metals from Groups 1a, 2a, 8, 1b and 2b of the Periodic Table to convert at least about 10% of the carboxylic acid groups to ionomeric salt groups. These ionomers may be then changed into useful polyurethane elastomers by reaction with organic polyisocyanates.

Abstract: A process of preparing a fast reacting, light stable, sprayable or injectable polyester-modified polyurethane polymer reaction product to prepare coatings or molded products, which process comprises admixing and reacting together: a trimerized or biuret aliphatic polyisocyanate, such as a trimerized or biuret hexamethylene diisocyanate prepolymer; a polyamine to react as a chain extender for the prepolymer, such as for example, a diethyltoluene diamine, in an amount sufficient to react substantially with the free NCO groups of the trimerized or biuret prepolymer; an unsaturated polyester subject to cross linking by the use of a metal salt promotor, such as a cobalt salt promotor, and a peroxide initiator; the cobalt salt and the peroxide initiator present in an amount to provide for the curing of the unsaturated polyester.

Abstract: A novel, heat curable, liquid polymer composition is disclosed which comprises a modified urethane oligomer containing terminal ethylenic unsaturation and a free radical catalyst. In a preferred embodiment, the polymer composition further includes at least one additional component selected from a reinforcing agent and a filler; the cured composition demonstrates enhanced impact properties and is particularly useful in automotive body constructions.

Abstract: A novel, heat curable, liquid polymer composition is disclosed which comprises a modified polyurethane oligomer containing terminal ethylenic unsaturation and a free radical generating catalyst. In a preferred embodiment, the polymer composition further includes at least one additional component selected from a reinforcing agent and a filler.

Abstract: A novel, heat curable, liquid polymer composition is disclosed which comprises a modified polyurethane oligomer containing terminal ethylenic unsaturation, a free radical generating catalyst, and at least one additional component selected from a reinforcing agent and a filler. The cured composition demonstrates desirable impact properties and is particularly useful in automotive body constructions.

Abstract: A novel, heat curable, liquid polymer composition is disclosed which comprises a modified polyurethane oligomer containing terminal ethylenic unsaturation and a free radical generating catalyst. The composition has utility in preparing molded articles and coatings.

Abstract: A liquefiable peroxide reactive molding composition comprising a reaction product of a polyol, an organic polyisocyanate and a hydroxyl ethylenic containing compound, said liquifiable composition having a free NCO content of less than about 0.3% by weight and an organic peroxide and being useful as an injection molding composition and as an adhesive that is essentially insensitive to atmospheric moisture.

Abstract: A novel, heat curable, liquid polymer composition is disclosed which comprises a modified polyurethane oligomer containing terminal ethylenic unsaturation and a free radical generating catalyst. The composition has utility in preparing molded articles and coatings.

Abstract: An FRP molding can be in-mold coated using a one-component peroxide initiated composition of (a) a liquid crosslinkable composition having an average molecular weight of up to about 5,000, having a plurality of polymerizable ethylenic double bonds, being essentially free of active hydrogen atoms and being essentially free of isocyanate groups and (b) a material selected from the group consisting of (I) a polyisocyanate and (II) the reaction product of an excess of equivalents of a polyisocyanate and an ethylenically unsaturated compound having --NH.sub.2, --NH-- and/or OH groups, said reaction product being free of active hydrogen atoms.

Abstract: Polymerable organic compounds are emulsified with aqueous alkali metal silicate solutions then polymerized with a catalyst such as a peroxide type catalyst thereby producing an alkali metal silicate organic plastic which may be used as an adhesive or as molding powder.

Abstract: This invention is concerned with spreadable fluid adhesive compositions, curable by conventional vinyl free radical polymerization or by exposure to a source of radiation, comprising a urethane prepolymer, at least one of dicyclopentyloxyalkyl acrylate and methacrylate, a polyol, and an effective amount of catalysts for curing of the urethane prepolymer and of the acrylate or methacrylate component. The invention is also concerned with a process for producing laminates of solid materials wherein the solid materials are adhered together by the adhesive composition.

Abstract: Potassium salt of 2-pyrrolidinone is used as a catalyst to cyclotrimerize an organic diisocyanate, yielding a mixture of monomeric cyclotrimerized product (isocyanurate) and oligomers thereof, soluble in common organic solvents and vinyl monomers. The catalyst can be used to make one-shot isocyanurate-crosslinked polyurethanes. Prepolymers and moisture-curing coating compositions can also be prepared.

Abstract: Improved thermoset or vulcanized polyurethane elastomers are obtained by adding to liquid polyurethane reactants, prior to reaction to form the polyurethane, organic peroxides having a half-life value of greater than one hour at 100.degree. C. Such mixtures may be heated to form the polyurethane article and thereafter thermoset or vulcanized, or the polyurethane containing the unactivated peroxide may be provided in sheet, crumbs, granules or otherwise and then formed and heated to thermoset or vulcanize the polyurethane.

Abstract: A novel, heat curable, liquid polymer composition is disclosed which comprises a modified urethane oligomer containing ethylenic unsaturation, a free radical catalyst, a polyfunctional mercaptan, and a filler.

Abstract: A polyisocyanate is reacted with an unsaturated polyester containing a vinyl monomer and a water-binding agent, then cured with water containing an oxidated silicon compound and an initiator such as a peroxide to produce solid or cellular solid inorganic-organic plastic.

Abstract: The invention provides impression materials for use in dentistry comprising the reaction product of (a) a diisocyanate or triisocyanate, (b) a dihydroxy compound having a molecular weight of from 300 to 10,000 and (c) an unsaturated monohydroxy compound. The invention also includes processes for preparing said impression materials.

Abstract: Novel compounds which are the products of monomeric organic reactants containing one or more active hydrogen atoms as determined by the Zerewitinoff method, e.g., a polyol, and organic polyisocyanates, e.g., diisocyanates, in such amounts as to provide about two isocyanate groups for each active hydrogen-containing group thereby forming isocyanate terminated intermediates which are reacted with monomeric organic reactants having at least one active hydrogen-containing group and preferably also an unsaturated group, preferably in a terminal position. One of the monomeric organic active hydrogen-containing reactants must have only one active hydrogen.