9887 results about "Isocyanate" patented technology

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 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.

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.

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.

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 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.

An ink composition containing at least a polymerizable composition, a pigment, and a polymer represented by General Formula (1):

where R¹ represents an (m+n)-valent organic linking group, R² represents a single bond or divalent organic linking group; A¹ represents a monovalent organic group having a pigment adsorption structure that contains at least one selected from organic pigment structure, heterocyclic structure, acidic group, group having a basic nitrogen atom, urea group, urethane group, group having a coordinating oxygen atom, hydrocarbon group having 4 or more carbon atoms, alkoxysilyl group, epoxy group, isocyanate group, and hydroxyl group; the n groups A¹ and bonds or groups R² may independently be the same or different; “m” is 1 to 8, “n” is 2 to 9, and m+n is 3 to 10; P¹ represents a polymer skeleton; and the m skeletons P¹ may be the same or different.

Provided herein are catalysts useful in providing foam products which are produced using an organic poly isocyanate as a starting material. A catalyst according to the present invention includes the tris-(hydroxyethyl)methyl ammonium cation, and optionally potassium cation, in combination with a variety of possible counter anions present to maintain charge balance and for compatibility. A catalyst according to the invention is preferably used in conjunction with one or more conventional tertiary amine catalysts in a foam producing process. The foams may be polyurethane foams, polyisocyanurate foams, flexible foams, or elastomeric foams.

The invention discloses a single-side glue water belt and a preparation method thereof; the water belt consists of a fiber knitting layer and a polyurea elastomer coating which is used as a lining layer which has the thickness of 0.5-1.0mm; high-strength aramids are preferably selected for the warp and woof of the knitting layer; the preparation method comprises the steps as follows: tabular knitting layer is knitted on a circular loom firstly; subsequently, isocyanate composition and resin composition are mixed and heated to 60-70DEG C and pressurized to 12-15MPa; subsequently, the mixture is sprayed at the internal side of the fiber knitting layer by a spraying gun, thus forming a polyurea elastomer coating which is then dried so as to gain the product; the water belt is used for delivering water or industrial liquids in the industries such as fire control or agriculture and industry, building and the like, has the advantages of wearability, anti-corrosion, anti-impact, long service life and the like, has simple preparation method, few equipment investment, high production efficiency and meeting the requirement of environmental protection.

This invention relates to polyurethane foams which exhibit decreased aldehyde emission, to a process of preparing these polyurethane foams, and to a method of decreasing aldehyde emissions in foams. The polyurethane foams herein additionally comprise a small quantity of a polyhydrazodicarbonamide dispersion polyol to the isocyanate-reactive component, or a trimerized hexamethylene diisocyanate to the polyisocyanate component.

Solid proppants are coated with a coating that exhibits the handling characteristics of a pre-cured coating while also exhibiting the ability to form particle-to-particle bonds at the elevated temperatures and pressures within a wellbore. The coating includes a substantially homogeneous mixture of (i) at least one isocyanate component having at least 2 isocyanate groups, and (ii) a curing agent comprising a monofunctional alcohol, amine or amide. The coating process can be performed with short cycle times, e.g., less than about 4 minutes, and still produce a dry, free-flowing, coated proppant that exhibits low dust characteristics during pneumatic handling but also proppant consolidation downhole for reduced washout and good conductivity. Such proppants also form good unconfined compressive strength without use of an bond activator, are substantially unaffected in bond formation characteristics under downhole conditions despite prior heat exposure, and are resistant to leaching with hot water.

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.

Filament winding process based on the mixing initiated polymerization of an at least two-component resin system, the system comprising an organic polyisocyanate and a polyfunctional active hydrogen composition as the principle isocyanate reactive species. The invention further provides improved composite articles produced by the filament winding process.

The invention provides a solid golf ball having a solid core and a cover layer that encases the core and has an outermost layer on an outside surface of which are formed a plurality of dimples. The solid core is formed of a rubber composition composed of 100 parts by weight of a base rubber that includes from 60 to 100 parts by weight of a polybutadiene rubber having a cis-1,4 bond content of at least 60% and synthesized using a rare-earth catalyst, from 0.1 to 5 parts by weight of an organosulfur compound, an unsaturated carboxylic acid or a metal salt thereof, an inorganic filler, and an antioxidant. The solid core has a deformation, when compressed under a final load of 130 kgf from an initial load of 10 kgf, of from 2.0 to 4.0 mm, and has a specific hardness distribution. The cover layer is formed by injection molding a single resin blend composed primarily of (A) a polyurethane material and (B) a polyisocyanate compound, which resin blend includes a polyisocyanate compound in at least some portion of which all the isocyanate groups on a molecule remain in an unreacted state. The cover layer has a thickness of from 0.5 to 2.5 mm and a Shore D hardness at the surface of from 50 to 70. The golf ball has a deformation, when compressed under a final load of 130 kgf from an initial load of 10 kgf, of from 2.0 to 3.8 mm. The solid golf ball is advantageous overall in competitive use.

The invention is drawn to silane copolymers prepared from the reaction of one or more polyisocyanates with one or more lubricious polymers having at least two functional groups, which may be the same or different, that are reactive with an isocyanate functional group and with one or more organo-functional silanes having at least two functional groups, which may be the same or different, that are reactive with an isocyanate functional group and at least one functional group reactive with a silicone rubber substrate. The silane copolymer coatings of the invention are elastic, lubricious, and resist wet abrasion. They are useful as coatings for polysiloxane (rubber) and other difficult to coat substrates, especially for medical devices, such catheters.

A coating composition which comprises (A) a resin having a glass transition temperature of 50 to 120 DEG C., a number average molecular weight of 2,000 to 100,000, a hydroxyl value of 50 to 150 mgKOH/g and an acid value of 1 to 25 mgKOH/g, which is produced by copolymerizing 10 to 90 percent by weight of (a) a (meth)acrylic acid ester of a C1 to C12 alkyl alcohol, 10 to 50 weight % of (b) a first polymerizable double bond-containing and hydroxyl group-containing monomer, 0.1 to 10 weight % of (c) a polymerizable double bond-containing and carboxyl group-containing monomer, 0 to 20 weight % of (d) styrene, 0 to 20 weight % of (e) acrylonitrile and 0 to 10 weight of (f) a second polymerizable double bond-containing monomer, (B) at least one compound selected from the group consisting of a polyisocyanate compound having two or more unblocked isocyanate groups and/or blocked isocyanate groups in the molecule and an aminoplast resin, (C) a dispersing component of at least one inorganic oxide sol selected from the group consisting of an aluminum oxide sol, a silica sol, a zirconium oxide sol and an antimony oxide sol, wherein an amount of a nonvolatile matter of component (C) is 5 to 60 percent by weight based on a total amount of nonvolatile matter of resin (A), compound (B) and component (C). The coating composition provides cured films having excellent weathering resistance, light resistance, stain resistance, stain-removing property, chemical resistance, moisture resistance and appearance and is environmentally friendly and safe.

The invention discloses a dynamic bond-containing polyurethane material for 3D printing and its preparation method and use. The preparation method utilizes, by mole, 100 parts of diisocyanate, 50-75 parts of polyester polyol or polyether polyol, 50-125 parts of a Diels-Alder bond-containing dihydric alcohol chain extender, 0-50 parts of a diisocyanate trimer cross-linking agent, 50-100 parts of a ligand-containing dihydric alcohol chain extender and 0-50 parts of a metal salt cross-linking agent. The Diels-Alder bond-containing dihydric alcohol chain extender and the diisocyanate trimer cross-linking agent are matched and are used for preparation of a Diels-Alder bond-containing polyurethane material. The ligand-containing dihydric alcohol chain extender and the metal salt cross-linking agent are matched and are used for preparation of a metal ligand-containing polyurethane material. Molecular structures of the prepared polyurethane materials contain a dynamic medical bond Diels-Alder bond and a metal ligand bond. The Diels-Alder bond-containing or metal ligand-containing polyurethane material has functions of self-restoration and self-bonding.

The invention discloses a low-density high-hardness microporous polyurethane elastomer and a preparation method thereof; polyester polyol A1, polyester polyol A2, polyester polyol A3, Diol chain extender, crosslinking agent, tertiary amine or organic metal catalysts, organosilicone foam homogenizing agent and water foaming agent are placed in a reactor and then mixed for obtaining a component A; isocyanate, polyester polyol B1, polyether polyol, and side effect inhibitor are placed in the reactor and then reacted for preparing a component B; later, the two components are completely mixed and injected into a mold for being reacted and molded so as to obtain the microporous polyurethane elastomer. The microporous polyurethane elastomer which is produced by the method has the advantages of low density, high hardness, low product shrinkage rate and the like, and can be widely used in production of sole materials such as middle sole, large sole, and the like.

A coating composition forming a abrasion resistant coating comprising (A) an ultraviolet-curable silicone prepared by chemically modifying particulate colloidal silica with a specific silane compound, (B) a monomer mixture comprising a (meth)acrylate having a specific isocyanate skeleton and a urethane poly(meth)acrylate having an alicyclic skeleton, and (C) a photo-polymerization initiator. By using a urethane poly(meth)acrylate having an alicyclic skeleton as part of the component (B) and the component (A) having an enhanced reactivity of chemical modification, the compatibility of the component (A) with the component (B) is improved to give a cured coating with excellent wear resistance, weather resistance and durability.

A fast hardening clear coating composition for repairing a clearcoat/colorcoat finish of a vehicle, which composition is capable of being wet sanded, buffed or polished to a high gloss finish on the same day of application, comprising a film forming binder and an organic liquid carrier, where the binder contains a hydroxyl component comprising a hydroxyl-containing acrylic polymer and a hydroxyl-terminated polyester oligomer, and an organic polyisocyanate crosslinking component, at least portion of which comprises a trimer of isophorone diisocyanate, where the composition further contains, as a combined curing catalyst, at least one dialkyl tin aliphatic carboxylate, at least one tertiary aliphatic mono or diamine, and at least one aliphatic carboxylic acid, in an effective amount such that the clear coating composition on curing at ambient temperatures is in a water spot free and sufficiently hard state for sanding or buffing within about 4 hours after application or on cool down when baked under normal conditions.

Compositions comprising a matrix polymer and a mixture of monomers are used for making polymer mixtures containing the matrix polymer and a second polymer formed from the monomer mixture. Preferably, the matrix polymer comprises a polyester, polystyrene, polyacrylate, thiol-cured epoxy polymer, thiol-cured isocyanate polymer, or mixtures thereof. Preferably, the monomer mixture comprises a thiol monomer and at least one second monomer selected from the group consisting of ene monomer and yne monomer. The compositions may be used to fabricate optical elements such as lenses.

An insulation box unit and a refrigerator of the present invention employs i) rigid urethane foam with a 8.0 MPa-or-greater bending modulus, and a 60 kg/m³-or-lower density, and ii) a vacuum insulation material. The proper bending modulus provides the insulation box unit with a substantial strength, even in the case that the coverage of the vacuum insulation material with respect to the surface of the outer box exceeds 40%. The proper density prevents the insulation box unit from poor insulation efficiency due to undesired solid thermal conductivity. Despite of an extended use of the vacuum insulation material, the insulation box unit offers an excellent insulation efficiency and therefore accelerates energy saving. According to the recycling method of the present invention, rigid urethane foam formed of tolylene di-isocyanate composition, which was separated from refrigerator wastes, is recycled as a material of rigid urethane foam.

The present invention provides for an etch and mar resistant low VOC clear coating composition most suitable for use as a top clear coat in multi-layered OEM or refinish automotive coatings. The coating composition includes isocyanate, carbonate and melamine components. The isocyanate component includes an aliphatic polyisocyanate. The composition may be formulated as a two-pack or one-pack coating composition, wherein the isocyanate functionalities are blocked with a blocker such as a mono-alcohol.

The invention discloses a method for preparing a non-toxic polyurethane curing agent with high solid content, which comprises the following steps of: 1, dehydrating a hydroxyl organic substance under the condition of a dehydration solvent and nitrogen protection, then dripping the hydroxyl organic substance into 10 to 100 percent of excessive diisocyanate monomer, and then reacting for 2 to 6 hours at the low temperature of between 30 and 90 DEG C to obtain a polyurethane prepolymer; 2, performing secondary separation on the polyurethane prepolymer obtained by the step one by adopting a film evaporator; and 3, pumping separated evaporation residues into a dilution container added with a solvent in advance by a pump, and stirring and diluting the obtained solution to obtain the curing agent. The method has the advantages of synthesizing the polyurethane prepolymer with uniform molecular weight distribution, low viscosity, good fluidity and suitability for separation, and not needing to add a separation assistant. The solid content of the polyurethane curing agent is between 60 and 85 percent, a NCO value is between 7.9 and 13.5 percent, and the content of free diisocyanate is between 0.15 and 0.5 percent.