23555 results about "Isocyanate" patented technology

Coating compounds curable by means of high-energy radiation, comprising as binderA) at least one (meth)acrylic copolymer containing olefinic double bonds capable of free-radical polymerization and hydroxyl groups with a C=C equivalent weight from 100 to 10,000 and an OH-value from 20 to 250 mg KOH / g, which is prepared from monomers comprising:A1) at least one olefinically unsaturated, epoxy-functional monomer capable of free-radical polymerization,A2) at least one olefinically unsaturated, carboxy-functional monomer capable of free-radical polymerization andA3) at least one further olefinically unsaturated monomer capable of free-radical polymerization which is different from A1) and A2), andB) at least one component with free isocyanate groups and process for multilayer coating using the coating compounds.

The disclosure relates to biocompatible components useful for forming compositions for use as medical / surgical synthetic adhesives and sealants. Biocompatible components of the present disclosure may include a polymeric polyol core, which may be treated with a nitroaryl compound to form a nitro ester. The resulting nitro ester groups may be reduced to form amino groups which, in turn, may be treated to form isocyanate groups. The resulting isocyanate may then be reacted with a second component to form adhesive and / or sealant compositions.

The disclosure relates to biocompatible components useful for forming compositions for use as medical / surgical synthetic adhesives and sealants. Biocompatible components of the present disclosure may include a multifunctional amine or multifunctional polyol core, with isocyanate and / or polyalkylene oxide arms, which may optionally be capped with electrophilic or nucleophilic groups. These biocompatible components may, in embodiments, be combined with optional cross linkers to form adhesive and / or sealant compositions.

A precursor source mixture useful for CVD or ALD of a film comprising: at least one precursor composed of an element selected from the group consisting of Li, Na, K, Rb, Cs, Fr, Be, Mg, Ti, Zr, Hf, Sc, Y, La, V, Nb, Ta, Cr, Mo, W, Mn, Re, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, B, Al, Ga, In, Tl, Si, Ge, Sn, Pb, As, P, Sb and Bi, to which is bound at least one ligand selected from the group consisting of hydride, alkyl, alkenyl, cycloalkenyl, aryl, alkyne, carbonyl, amido, imido, hydrazido, phosphido, nitrosyl, nitryl, nitrate, nitrile, halide, azide, alkoxy, siloxy, silyl, and halogenated, sulfonated or silyated derivatives thereof, which is dissolved, emulsified or suspended in an inert liquid selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons, alcohols, ethers, aldehydes, ketones, acids, phenols, esters, amines, alkylnitrile, halogenated hydrocarbons, silyated hydrocarbons, thioethers, amines, cyanates, isocyanates, thiocyanates, silicone oils, nitroalkyl, alkylnitrate, and mixtures thereof. The precursor source mixture may be a solution, emulsion or suspension and may consist of a mixture of solid, liquid and gas phases which are distributed throughout the mixture.

The invention is a composition comprising applying to a substrate a stream of an adhesive comprising: one or more epoxy resins; one or more rubber modified epoxy resins; one or more toughening compositions comprising the reaction product of one or more isocyanate terminated prepolymers and one or more capping compounds having one or more phenolic, benzyl alcohol, aminophenyl, or, benzylamino groups wherein the reaction product is terminated with the capping compounds; one or more curing agents for epoxy resins and one or more catalysts which initiate cure at a temperature of about 100° C. or greater; and optionally; fillers adhesion promoters, wetting agents or rheological additives useful in epoxy adhesive compositions; wherein the adhesive composition has a viscosity at 45° C. of about 20 Pa.s to about 400 Pa.s. The composition can be used as an adhesive and applied as a stream using a high speed streaming process.

Disclosed are aromatic polyester polyols, polyol based resin blends, and rigid closed-cell polyisocyanate-based foams made using the polyol based resin blends. The resin blends generally comprise:(a) an aromatic polyester polyol reaction product formed by inter-esterification of a phthalic acid based material; a hydroxylated material having a functionality of at least 2; and a hydrophobic material; and(b) a C4-C7 hydrocarbon blowing agent. Also disclosed is a method for preparing rigid closed-cell polyisocyanate-based foams comprising reacting a polyisocyanate and a polyol based resin blend.

A polyurea composition, a multi-component composite coating and articles formed therefrom, and methods of forming the same are disclosed. The coating composition is formed from a reaction mixture comprising an isocyanate-functional component and an amine-functional component. The ratio of equivalents of isocyanate groups to equivalents of amine groups is greater than 1 while the volume mixing ratio of the isocyanate-functional component to the amine-functional component is capable of being applied to a substrate at 1:1.

The invention is an epoxy resin based adhesive composition comprising an epoxy resin and a compound comprising an elastomeric prepolymer residue selected from the group of a polyurethane, a polyurea and a polyurea polyurethane having isocyanate end groups, the isocyanate end groups of said prepolymer residue being capped by a capping compound selected from the group consisting of a primary aliphatic, cycloaliphatic, heteroaromatic and araliphatic amine, a secondary aliphatic, cycloaliphatic, aromatic, heteroaromatic and araliphatic amine, a thiol and an alkyl amide, said capping compound being bound to the end of the polymer chain of the elastomeric prepolymer in a manner such that the end to which it is bonded no longer has a reactive group. In addition to the capping compound defined above above, a capping compound selected from the group consisting of a phenol and a polyphenol can be used for capping the isocyanate end groups of the prepolymer residue

Methods for preparing polyurethane flexible foam are described, wherein an organic polyisocyanate is reacted with an active hydrogen-containing component such as an organic polyol, in the presence of a urethane catalyst, a blowing agent, optionally a cell opener, and a siloxane-based surfactant composition as a stabilizer for the foam. The siloxane-based surfactant composition comprises a silanol-functionalized organosiloxane having general formula (I), wherein: the R groups are independently a C1-C3 alkyl, phenyl, or —OSi(R)3; provided that at least one R group is a hydroxyl (—OH) bonded directly to any silicon atom and X is an integer from 0-200.

The present invention provides an isocyanate-reactive component containing at least 10 wt. %, based on the weight of the isocyanate-reactive component, of a vegetable oil-based polyol, a nonionic emulsifier containing one of an aliphatic alcohol ethoxylate and an aliphatic phenol ethoxylate having a polymerized ethylene oxide content of at least 25 moles per equivalent of alcohol or phenol and a HLB value greater than 17, one or more non-vegetable oil-based polyols, one or more silicone surfactants, and optionally, water or other blowing agents, catalysts, pigments and fillers, wherein the isocyanate-reactive component is storage stable at temperatures of from −10° C. to 60° C. for at least three days. The inventive isocyanate-reactive component can be shipped and stored at normal shipping and storage temperatures and still produce acceptable foam on a daily basis whilst helping to satisfy polyurethane foam and elastomer producers' “green” requirements.

A fluoropolymer coated film comprising polymeric substrate film and fluoropolymer coating on the polymeric substrate film. The fluoropolymer coating comprises fluoropolymer selected from homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride polymer blended with compatible adhesive polymer comprising functional groups selected from carboxylic acid, sulfonic acid, aziridine, anhydride, amine, isocyanate, melamine, epoxy, hydroxy, anhydride and mixtures thereof. The polymeric substrate film comprises functional groups on its surface that interact with the compatible adhesive polymer to promote bonding of the fluoropolymer coating to the substrate film.

The present invention provides a chemical mechanical polishing pad comprising a polishing pad having a window formed therein and wherein the window is formed from a reaction of an aliphatic polyisocyanate, a hydroxyl-containing material and a curing agent.

A mixture is provided comprising (a) at least one of an elastomeric thermoplastic, a non-elastomeric thermoplastic, an elastomeric thermoset and mixtures thereof, excluding polydiorganosiloxane fluids and (b) a polymer having soft polydiorganosiloxane units, hard polyisocyanate residue units, optionally, soft and / or hard organic polyamine residue units and terminal groups. The hard polyisocyanate residue and the hard polyamine residue comprise less than 50% by weight of the polydiorganosiloxane urea containing component. The polyisocyanate residue is the polyisocyanate minus the —NCO groups and the polyamine residue is the polyamine minus the —NH2 groups. The polyisocyanate residue is connected to the polyamine residue by urea linkages. The terminal groups are non-functional groups or functional groups. The polydiorganosiloxane urea containing component may be reactive under free-radical or moisture curing conditions. The mixture may also optionally contain tackifying materials, free radical initiators, crosslinking agents, cure catalysts, and nonreactive additives such as fillers, pigments, stabilizers, antioxidants, flame retardants, plasticizers, compatibilizers and the like.

The present invention is directed to novel organometallic complexes as catalysts for the reaction of compounds with isocyanate and hydroxyl functional groups to form urethane and / or polyurethane and the process employing such catalysts. More particularly, the present invention is directed to novel complexes of zinc(II) with substituted amidines. These novel catalysts are useful for the production of urethanes and polyurethanes which are important in many industrial applications.

A thermosettable adhesive is used to secure a laminate having a compliant layer (for example, a foamable composition containing a diene rubber), a layer comprised of a thermosettable resin capable of being cured to a rigid state, and an optional carrier layer (for example, a metal foil) to a substrate for the purpose of strengthening, stiffening, or otherwise reinforcing the substrate. The substrate may, for example, be a metal vehicle door. The thermosettable adhesive is comprised of at least one polyol such as a polyether polyol, at least one epoxy resin, and at least one polyisocyanate.

The high-durability flexible polyurethane cold cure molded foam of the invention has an overall density of not less than 35 kg / m3 and not more than 45 kg / m3 and a wet heat compression set of not more than 15%, and preferably has a hardness change ratio, as determined in a repeated compression test, of not more than 15%. This foam can be obtained by the process of the invention. The process of the invention is a process for producing a flexible polyurethane cold cure molded foam obtained from a polyol and / or a polymer polyol containing dispersed polymer microparticles obtained by radical polymerizing a compound having an unsaturated bond in the polyol, water, a catalyst and a polyisocyanate, wherein the polyol is a polyol synthesized by the use of a catalyst containing at least one compound selected from the group consisting of a compound having a nitrogen-phosphorus double bond, cesium hydroxide and rubidium hydroxide. The foam of the invention has a low density and is excellent in durability, particularly in hardness change ratio in a repeated compression test and wet heat compression set. According to the process of the invention, such a foam can be obtained.

Microwell biochips (11) are formed from a thin flat plate (13) of polymeric material having a plurality of regularly spaced holes (15) that extend completely therethrough and create microwells. The lower end of each hole is closed by a microporous, hydrophobic, polymeric membrane (17) laminated to the undersurface of the plate which retains an aqueous test solution in the wells until a vacuum is applied to the undersurface thereof to effect draining of the solution and of any wash solution that might be subsequently added. A spot of polymerizing isocyanate-functional hydrogel is applied generally centrally to the porous membrane surface at the bottom of each well in a manner so as to cover only a minor portion of the surface and out of contact with the well sidewalls, thus leaving substantial surface area through which drainage can be readily effected. Biological capture agents are associated with the polymerizing hydrogel so as to become immobilized as a part thereof.

A polyurethane is produced by reacting at least components A and B, where a) a polyisocyanate or mixture of polyisocyanates is used as component A and b) a polyol or mixture of polymer is used as component B. Component B contains at least one polyether having a number average molecular weight of at least 4000 and a polydispersity of less than 1.5 and / or an OH functionality of between about 1.8 and about 2. Preparations containing such polyurethanes are useful as adhesives, coatings and sealants.

A polyurethane adhesive which is useful in bonding porous and non-porous surfaces is provided. The adhesive is especially useful in bonding windshield glass into automotive frames under a variety of environmental conditions, particularly in after market windshield replacement applications. The polyurethane includes at least one urethane prepolymer which is based on at least one thermoplastic polyol. In one embodiment, the urethane prepolymer may be formed from one or more polyisocyanates, one or more polyetherpolyols and one or more thermoplastic polyesterpolyols, wherein the prepolymer has a free isocyanate content of from about 0.6 to about 3.5 % by weight, based on the weight of the polyurethane. In another embodiment, a one-part adhesive composition is provided which includes an isocyanate-functional and thermoplastic polyurethane prepolymer having a free isocyanate content of from about 0.6 to about 3.5 % by weight, based on the weight of the polyurethane, and a combination of several catalysts which are capable of catalyzing the reaction of isocyanate moieties with isocyanate-reactive moieties while providing less temperature dependent catalyzing of the reaction between isocyanate moieties and water. Also provided is a process for bonding two or more substrates together utilizing the polyurethane adhesive. In automotive windshield replacement applications, the polyurethane adhesive allows for a sufficient working time and development of green strength to provide a safe drive-away time within 1 hour at a temperature from about 0 to about 100° C.

The invention discloses a polymer coated released fertilizer and a preparation method thereof and a special coating material thereof. The coating material comprises isocyanate, polyol, degradable functional monomer, an aid agent of coating and a chain extender, wherein, the mol ratio between the isocyano group in the isocyanate and the hydroxyl group in the polyol is 1:2 to 2:1 and the mass of the degradable functional monomer is 1 percent to 20 percent of the mass of the coating material. The coated released fertilizer provided by the invention consists of a core and a karyotheca, wherein, the core is granule fertilizer and the karyotheca is prepared from the coating material, and the mass of the karyotheca is 2 percent to 10 percent of the mass of the core. The coating material has good film forming and water resisting performance and can be degraded in nature. The hardness and the elasticity of the material can be adjusted by changing the mixure ratio of the coating material so as to prepare released fertilizers with different releasing periods.

Absorbable polyurethanes, polyamides and polyester urethanes prepared from at least one compound selected from:or the diamines and diisocyanates thereof, wherein each X represents a member independently selected from —CH2COO— (glycolic acid moiety), —CH(CH3)COO— (lactic acid moiety), —CH2CH2OCH2COO— (dioxanone), —CH2CH2CH2CH2CH2COO— (caprolactone moiety), —(CH2)yCOO— where y is one of the numbers 2, 3, 4 or 6-24 inclusive, and —(CH2CH2O)z′CH2COO— where z′ is an integer between 2 and 24, inclusive; each Y represents a member independently selected from —COCH2O— (glycolic ester moiety), —COCH(CH3)O— (lactic ester moiety), —COCH2OCH2CH2O— (dioxanone ester), —COCH2CH2CH2CH2CH2O— (caprolactone ester), —CO(CH2)mO— where m is an integer between 2, 3, 4 or 6-24 inclusive, —COCH2O(CH2CH2O)n— where n is an integer between 2 and 24, inclusive; R′ is hydrogen, benzyl or an alkyl group, the alkyl group being either straight-chained or branched; p is an integer between 1 and 4, inclusive; and Rn represents one or more members selected from H, alkoxy, benzyloxy, aldehyde, halogen, carboxylic acid and —NO2, which is attached directly to an aromatic ring or attached through an aliphatic chain. Absorbable polymers prepared from these compounds are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention and other implantable medical devices.

A formulation for covering vehicle panels, such as the inner fenders or floor boards of an automobile, with a chip resistant, vibration damping coating. The formulation includes a blocked polyurethane prepolymer (or a blocked polyisocyanate and a polyol), an epoxy resin, a filler and a plasticizer. A method for forming a chip resistant, vibration damping coating on such a panel including the steps of applying a coating mixture to the panel, the coating mixture including a blocked polyurethane prepolymer (or a blocked polyisocyanate and a polyol) and an epoxy resin, and then heating the panel to form the coating. An improved vehicle panel, wherein the improvement is a polyurethane modified epoxy coating (or a coating which is an interpenetrating network of polyurethane resin and epoxy resin) on the panel.

A solid golf ball with a polyurethane cover having satisfactory formability and ball properties. The solid golf ball has a solid core, and a polyurethane cover for covering the solid core, wherein the difference in Shore D hardness between a center portion and a surface portion of the solid core is at least 15; the polyurethane cover has a thickness (t) of not more than 1.0 mm, and is formed from a cured urethane composition having Shore D hardness (D) of from 35 to 60; a product of the thickness(t) and the Shore D Hardness (D) of the cured urethane composition is ranging from 10 to 45(10≦D×t≦45); and the urethane composition contains an isocyanate group-terminated urethane prepolymer having the residual polyisocyanate monomer content of not more than 0.1 mass %, and an aromatic polyamine compound.

The invention relates to a preparation method for the hydroxyl acrylic aqueous dispersion of high performance and two-component waterborne polyurethane, which comprises four steps: synthesizing hydroxyl acrylic resin, removing a solvent, a neutralization salt forming reaction and deionization and aqueous dispersion. The hydroxyl acrylic aqueous dispersion prepared by the invention has proper molecular weight and the molecular weight is distributed much narrower, thus being beneficial for forming a uniform coating, reducing the plasticizing effect of small molecule substance to the coating, and increasing the comprehensive performance of the coating. The dispersion can be combined with an isocyanate curing agent to be used as wood coatings, corrosion protective coatings, industrial maintenance coatings, floor coatings and the like, and also can be used for preparing a two-component waterborne polyurethane adhesive, etc.

The invention provides a polyurethane compound heated board and a manufacturing method and application, which relates to a heated board and supplies a polyurethane compound heated board that has good heat-insulating effect, high fire-fighting and flame-retardant performance, convenient using performance and high constructing efficiency and the manufacturing method and the application. The invention includes a polyurethane rigid foam insulating layer, a bonding layer and an inorganic material composite board; the bonding layer is arranged between the polyurethane rigid foam insulating layer and the inorganic material composite board; the thickness of the polyurethane rigid foam insulating layer is 20-80mm and the thickness of the inorganic material composite plate is 3-10mm. The inorganic material composite board can be continuously produced for further use; an adhesive treatment agent is coated on the inorganic material composite board; polyhydric alcohol combination material and isocyanate combination material are added into the continuous production line for mixed foaming and curing to obtain the polyurethane compound heated board; the mass ratio of the polyhydric alcohol combination material and the isocyanate is 100:95-160.

The invention discloses a method for preparing lignin polyurethane, which comprises the following steps of: using an organic solvent to dissolve the lignin which is extracted and separated from residues after producing ethanol from straws by sodium hydroxide; removing the residues, and depositing the mixture with water; separating the lignin; modifying the lignin with an epoxide; dissolving the lignin into a polylol; and finally compounding the lignin with raw materials of isocyanate and the like to obtain a polyurethane material. The lignin used in the method has high reactivity which can be further enhanced through modification so as to obtain a lignin polyurethane material; the polylol used in the method not only can be used as a solvent but also can take part in a synthetic reaction, has good dissolvability to the lignin, and ensures that undissolved lignin particles cannot appear in a polyurethane foam material; and the link for polyurethane synthesis uses no volatile organic solvents, so the production process causes no pollution to the environment, and simultaneously the cost of a polyurethane product is reduced.

The invention discloses a two-component waterborne polyurethane colored paint and the preparation method. The components of the paint are 5 to 15 water, 0.2 to 0.5 dispersant, 0.1 to 0.3 antifoamer, 0.1 to 0.3 wetting agent, 3 to 25 paints, 0 to 50 fillers, 10 to 80 film forming resins, 0 to 5 film forming additives, 0.1 to 0.3 disinfectant, 0.1 to 0.3 antiflash rust agent, 0.5 to 2 thickeners, 1 to 20 hydrophilically-modified polyisocyanate. The preparation method is that water, dispersant, antifoamer, wetting agent, paints and fillers are dispersed evenly by a sand mill, a ball mill or a high-speed stirrer after stirring, and are added with film forming resins, film forming additives, disinfectant, antiflash rust agent and thickeners to gain the product-component A. The hydrophilically-modified polyisocyanate is component B. The component A and component B are mixed uniformly when using. The invention is characterized in that the invention does not adopt organic solvents, does not contain toxic paints and has no harm on the human body and environment, and the properties can reach the solvent two-component polyurethane paint, which can be produced to the primer, intermediate coat and finishing coat, and can be applied in the surface of the wooden ware, cement and metals.

The invention relates to a double-component polyurethane coating and a preparation method thereof. The coating comprises a component A and a component B, wherein the component A comprises hydroxyl-containing acrylic resin, fluorocarbon resin, polyester resin, non-nanoscale titanium white, nanometer titanium dioxide, nanometer silicon dioxide and various auxiliary agents; and the component B comprises polyisocyanate curing agent, solvent and moisture scavenger. The component A and the component B are mixed at the weight ratio of 4:1-5:1 to obtain the polyurethane coating. The coating has excellent wear resistance, scratch resistance and weather proofness, has favorable decoration, and is suitable for coating the surfaces of rapid trains, automobiles and the like which have higher requirements on decoration and physiochemical performance.

A novel method of preparing an aqueous dispersion of non-uniform polyurethane particles which comprises (a) preparing at least two isocyanate-terminated polyurethane prepolymers having different hydrophilicities; (b) preparing a uniform mixture of said prepolymers; and (c) dispersing the mixed prepolymers in an aqueous medium. The resulting dispersion of the prepolymers may optionally be chain extended. This method enables the preparation of core-shell particles as well as particles of other morphologies, including “raspberry”, interpenetrating network, “salt-and-pepper”, “ice-cream cone” and particles of gradient composition. Similarly, an aqueous dispersion of two different polyurethane polymers may be obtained by first preparing at least two different isocyanate-terminated polyurethane prepolymers, preparing a uniform mixture of such prepolymers and thereafter dispersing the mixture in an aqueous medium.