Abstract: An adhesive composition is made from a first part containing an isocyanate group-containing prepolymer that is a reaction product of a first isocyanate and at least one polyol; and a second isocyanate that is essentially unreacted with the first isocyanate, the at least one polyol, and the isocyanate group containing prepolymer; and a second part containing at least two polyols; wherein the adhesive composition is essentially free of diluent oils and solvents. A polyurethane adhesive is made by mixing the first part and the second part in a 1:1 to 1.2:1 weight ratio of the first part to the second part to form a mixture, and curing the mixture. The polyurethane adhesive can be used in articles, including semipermeable membranes and reverse osmosis modules. When a solvent is filtered through the semipermeable membranes by reverse osmosis, the polyurethane adhesive prevents or reduces osmotic blistering.

Abstract: The present invention discloses novel difunctional monomers compound containing pendant clickable furyl group of formula (I), process for the preparation and polymers prepared there from. wherein, X is selected from —COOCH3, —COOH, —CON3, —NCO, —CONHNH2, —CH2OH n is selected from 2 to 12.

Abstract: A system for providing reduced-pressure treatment to a moveable tissue site, such as a joint, includes a flexible dressing bolster. The flexible dressing bolster has a first side and a second, inward-facing side, and a plurality of flexion joints formed on the flexible dressing bolster. The system further includes a sealing subsystem for providing a fluid seal over the flexible dressing bolster and the patient's epidermis and a reduced-pressure subsystem for delivering a reduced pressure to the sealing subsystem. The sealing subsystem and reduced-pressure subsystem are operable to deliver a reduced pressure to the moveable tissue site. The flexible dressing bolster is operable to allow articulation or movement of the moveable tissue site. The sealing subsystem may include a drape with folds. Other systems, apparatuses, and methods are presented.

Abstract: The present invention relates to novel polyurethanes and to mixtures of such polyurethanes, to processes for their preparation, to their use for producing preparations comprising water and to preparations which comprise the polyurethanes. In particular, the invention relates to water-dispersible polyurethane with an essentially linear backbone composed of alternating hydrophilic and hydrophobic sections.

Abstract: The present invention provides a photolatent Ti-chelate catalyst formulation, comprising (i) at least one compound of the formula (I) wherein R1 is C1-C20alkyl or C2-C20alkyl which is interrupted by one or more non-consecutive O-atoms; Y is formula (II) or optionally substituted phenyl; Y1 is formula (III) or optionally substituted phenyl; Y2 is formula (IV) or optionally substituted phenyl; Y3 is formula (V) or optionally substituted phenyl; R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 and R13 independently of each other are hydrogen, halogen, optionally substituted C1-C20alkyl, or R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 and R13 independently of each other are optionally substituted C6-C14aryl, provided that only one of R2, R3, R4 is hydrogen and only one of R5, R6, R7 is hydrogen and only one of R8, R9, R10 is hydrogen and only one of R11, R12, R13 is hydrogen; and (ii) at least one chelate ligand compound of the formula IIa, IIb or IIc, wherein Y? is formula (VI) or formula (VII); Y?1 is formula (VI

Abstract: The invention relates to a non-aqueous coating composition comprising a. a polyisocyanate, b. a polyol having an average functionality of more than 3 hydroxyl groups per molecule, c. a metal based curing catalyst for the addition reaction of isocyanate groups and hydroxyl groups, and d. a mercapto carboxylic acid, wherein the coating composition does not contain a carboxylic acid wherein the carbonyl group of the carboxylic acid is in conjugation with a ?-electron system.

Abstract: A glazing unit includes a hydrophilic layer including a polyurethane network incorporating bis-urea functions. Furthermore, a process for manufacturing this glazing unit, includes depositing a solution containing at least one isocyanate, one polyol and one bis-urea including a polyol function, polyvinylpyrrolidone, a film-forming agent and a solvent on a glass substrate, drying the glazing unit containing the substrate and the deposited solution, and subjecting the glazing unit to a temperature of between 100 and 150° C.

Abstract: Provided is a method of preparing a transparent, non-elastomeric optical article including (1) combining to form a reaction mixture free of urethanation catalysts (a) a polyisocyanate component; and (b) an active hydrogen component of polyol and/or polythiol, and at least one compound containing both amine and hydroxyl functional groups; (2) allowing the polyisocyanate component to react with amine functional groups in the active hydrogen component to form an intermediate product including a polyurea prepolymer having hydroxyl functional groups in admixture with the polyol and/or polythiol and, optionally, the compound containing both amine and hydroxyl functional groups; (3) mixing the intermediate product with additional polyisocyanates and optionally a urethanation catalyst to form a second reaction mixture; (4) introducing the second reaction mixture to a mold to form a thermoset polymerizate; and (5) releasing the polymerizate from the mold.

Abstract: Provided is a transparent, non-elastomeric optical article prepared by (1) combining to form a reaction mixture (a) a polyisocyanate component; and (b) an active hydrogen component including (b1) a first component free of amino groups including at least one first polyol; and (b2) a second component containing (i) a second polyol and/or a polythiol and (ii) a compound containing both amine and hydroxyl functional groups; (2) introducing the reaction mixture to a mold at a temperature and for a time sufficient to form a thermoset polymerizate; and (3) releasing the polymerizate from the mold to yield a transparent, non-elastomeric optical article. Also provided is a method for preparing a transparent optical film. Optical films and articles prepared by the methods also are provided.

Abstract: The present invention provides a laminate obtained by arranging a composition to be in contact with a rubber, wherein the composition is prepared by blending a polythiol compound (A), an isocyanate group-containing compound (B) and a radical generator (C), and wherein the ratio of the total molar number of the isocyanate group contained in the isocyanate-containing compound (B) to the total molar number of the thiol group contained in the polythiol compound (A) (isocyanate group/thiol group) is from 0.2 to 0.78, and provides a method for producing the laminate. The present invention thus provides a laminate, in which the rubber layer is adhered using at least one of an adhesive or an adhesive sheet capable of strongly adhering a rubber member, especially a vulcanized rubber member, and provides a laminate adhering to a rubber article using at least one of a coating agent and a coating sheet.

Abstract: The polyurethane resin composition comprises a main agent (I) which comprises an urethane prepolymer (A) with an isocyanate group terminal and a hardener (II) which comprises an urethane prepolymer (B) with a hydroxyl group terminal, wherein the urethane prepolymer (B) with the hydroxyl group is a product of reaction between a polyol ingredient (a) comprising a castor oil-based polyol (a1) and a polyisocyanate (b) can inhibit the hollow fiber membranes from clogging, regardless of the kind thereof, when the composition is used as a binder for hollow fiber membranes.

Abstract: An optical lens element resin composition including: dicyclohexylmethane diisocyanate; a polythiol compound having 3 or 4 thiol groups; and a thermal catalyst.

Abstract: The invention relates to novel processes for improving hydrolysis resistance in polyurethane (PU) based systems, preferably PU adhesives, PU casting resins, PU elastomers or PU foams.

Abstract: Polyurea systems comprising: (a) an amino-functional aspartic ester of the general formula (I) wherein X represents an n-valent organic radical derived from a corresponding n-functional primary amine X(NH2)n, R1 and R2 each independently represent an organic radical having no Zerevitinov active hydrogens and n represents an integer of at least 2; and (b) an isocyanate functional prepolymer having a residual monomer content of less than 1% by weight, the prepolymer prepared by reacting: (b1) an aliphatic isocyante; and (b2) a polyol component having a number average molecular weight of ?400 g/mol and an average OH functionality of 2 to 6, wherein the polyol component comprises one or more constituents selected from the group consisting of polyester polyols, polyester-polyether polyols and mixtures thereof; processes for making the same; postoperative adhesions barriers prepared therewith and dispensing systems for such polyurea systems.

Abstract: The invention relates to a coating composition comprising: A) at least one thiol-functional compound having at least one thiol group, B) at least one polyisocyanate cross-linking agent with at least one free isocyanate group and C) at least one catalyst compound, said catalyst compound comprising at least one catalyst for the curing reaction between the thiol groups of component A and the free isocyanate groups of component B, and at least one cyclodextrine.

Abstract: A novel macromer or mixture thereof is described herein, comprising isocyanatophenyl ether terminal moieties and at least two residues of a water-soluble polymer having a molecular weight ranging from 80 to 10,000 adjacent to the ether group of the isocyanatophenyl ether terminal isocyanate moieties, thereby forming at least two ether linkages in the macromer or mixture thereof. A method for making a polyisocyanate macromer is also described herein.

Abstract: The present invention relates to the use of specific inorganic Sn(IV) for the production of polyisocyanate polyaddition products from a) at least one aliphatic, cycloaliphatic, araliphatic and/or aromatic polyisocyanate, b) at least one NCO-reactive compound, c) at least one thermolatent inorganic tin-containing catalyst, d) optionally further catalysts and/or activators other than c), e) optionally fillers, pigments, additives, thickeners, antifoams and/or other auxiliary substances and additives, wherein the ratio of the weight of the tin from component c) and the weight of component a) is less than 3000 ppm when component a) is an aliphatic polyisocyanate and less than 95 ppm when component a) is an aromatic polyisocyanate, wherein as thermolatent catalysts cyclic tin compounds of formula I, II or III: wherein n>1, are used.

Abstract: A method of reducing odors in lipid-based polyol. At least one lipid-based polyol is provided, and mixed with ricinoleic acid and/or a metal salt of ricinoleic acid. Isocyanate may be added, preferably toluene diisocyanate (TDI). The polyol, and the isocyanate when present, are reacted in the presence of the ricinoleic acid and/or a metal salt of ricinoleic acid which reduces or removes odors in the lipid-based polyol. When isocyanate is used, low, limiting levels are preferred, well below the level required to fully react with all of the polyol. Tin, zinc, sodium, and calcium ricinoleic acid metal salts are particularly preferred. Preferably the reaction takes place without added heat, at room temperature. The reaction may be performed in a chamber which is under at least a partial vacuum.

Abstract: A catalyst system which is suitable for catalyzing the production of polyurethane systems is provided. The catalyst system contains a metal salt of a carboxylic acid to whose carbonyl carbon a hydrogen atom or a hydrocarbon radical is bound, with the proviso that the carboxylic acid does not have exclusively a single ethyl or n-propyl branch in the 2 position.

Abstract: The invention is directed to coating compositions comprising A) at least one hydroxyl-functional and optionally acid-functional binder, preferably with an acid number of 0 to 150 mg KOH/g binder solids, B) at least one polyisocyanate curing agent with free isocyanate groups, C) at least one thermally latent tetrahydrocarbyl tin catalyst of general formula (I) RnR?4-nSn??(I) wherein R is an alkyl group, R? is an aryl, arylalkyl or alkenyl group and n is 1, 2 or 3, and D) optionally at least one acid-functional compound, that is different from component A), with the proviso that the acid number of a composition, consisting of the at least one binder A) and optionally of the at least one acid-functional compound D), has an acid number of at least 5 mg KOH/g solids, preferably of least 10 mg KOH/g solids, and to a process for coating substrates comprising the steps: I) applying the coating composition to an optionally pre-coated substrate, and II) curing the applied coating composition by means of thermal ene

Abstract: Methods of catalyzing chemical reactions are provided. A tri-substituted phosphine having at least one substituent that is an alkyl group is added as a catalyst to reaction mixtures. Reaction mixtures contain uretdiones, anhydrides, or isocyanate functional materials including isocyanurates, in various combinations with hydroxyl, thiol, and/or amine functional materials. Curable compositions comprising these catalysts and reaction mixtures are also provided.

Abstract: A tin-containing polyurethane resin having a melting temperature of 40 to 180° C., measured by DSC at a heating rate of 10 K/min and prepared by carrying out a condensation reaction between a diorganotin compound and carboxyl groups of a carboxyl-functional polyurethane resin, wherein the molar ratio between the tin and the carboxyl groups is 1:2-20; and liquid coating compositions containing solid particles of the tin-containing polyurethane resin.

Abstract: Provided is a polylactic acid-based polyol composition in which a catalyst that remains in the polylactic acid-based polyol and that acts also as a catalyst for urethane formation has been deactivated by easy means. Thus, the polylactic acid-based polyol composition suffers from little influence of the catalyst on urethane formation. When the polylactic acid-based polyol composition is used as a raw material for a urethane resin, therefore, uniform molded products can be obtained. Also provided are a process for the production of the polylactic acid-based polyol composition, a urethane resin composition obtained using the polylactic acid-based polyol composition, a process for the production of the same, and molded products thereof.

Abstract: Polyurethane polymers are made from a reaction mixture that contains a polyisocyanate, a hydroxylmethyl-containing fatty acid or ester, and another polyol, polyamine or aminoalcohol. The carboxylic acid or ester group on the hydroxymethyl-containing fatty acid or ester are capable of engaging in a variety of reactions with the polyisocyanate and/or amine or hydroxyl groups present in the reaction mixture. This allows for good quality, high molecular weight polymers to be produced even though the hydroxymethyl-containing fatty acid or ester tends to be a low functionality material.

Abstract: A catalyst system which is suitable for catalyzing the production of polyurethane systems is provided. The catalyst system contains a metal salt of a carboxylic acid to whose carbonyl carbon a hydrogen atom or a hydrocarbon radical is bound, with the proviso that the carboxylic acid does not have exclusively a single ethyl or n-propyl branch in the 2 position.

Abstract: The invention herein relates to a surface protective dendritic polymer coating compositions and to the cross-linked surface protective coatings formed thereby.

Abstract: A composition capable of radiation activated catalysis is provided. The composition comprises a metal compound, a mercapto compound and an olefinic compound. Radiation curable urethane compositions comprising the disclosed composition are also provided. The radiation curable urethane compositions comprise the disclosed composition, a hydroxyl compound and an isocyanate compound. Activation of the composition by radiation in a urethane formulation provides for an efficient method of curing the urethane composition. Coating and adhesive compositions comprising the radiation curable urethane compositions are also provided. In addition, methods for coating and bonding substrates are disclosed.

Abstract: The present invention relates to a composition for an optical material, which is capable of suppressing occurrence of polymerization unevenness called striae, in particular, striae to be caused in high-powered lenses with sharp curves, and more specifically relates to a composition for an optical material including: a polymerization catalyst having a mass ratio of dibutyltin dichloride to monobutyltin trichloride of 97.0/3.0 to 100.0/0.0; a polythiol compound; and a polyiso(thio)cyanate compound.

Abstract: A two-part polyurethane adhesive system includes a resin component A and a curative B. The resin component A includes a monomeric polyisocyanate and a prepolymer. The curative B includes a of ether polyol having a molecular weight of from 3000 to 20,000 and another polyol having 4-8 hydroxyl groups and a molecular weight of from 200 to 1000. The system includes a tin (IV) catalyst, which is contained in the resin component, and a blocked aza-type catalyst, which is contained in the curative. The system has excellent shelf stability, gives an excellent open time at ambient temperatures, and cures rapidly when heated to 65° C. or higher.

Abstract: A novel macromer or mixture thereof is described herein, comprising benzoyl isocyanate terminal moieties and at least two residues of a water-soluble polymer having a molecular weight ranging from 80 to 10,000 adjacent to the carbonyl group of the benzoyl isocyanate moieties, thereby forming at least two ester linkages in the macromer or mixture thereof. A method for making a polyisocyanate macromer is also described herein.

Abstract: The invention relates to a process for preparing a thermoplastic polyisocyanate polyaddition product based on polyisocyanate (i) and compounds which are reactive toward polyisocyanate, with or without the use of chain extenders, a first catalyst (iv) and/or auxiliaries and/or additives (v), wherein a second catalyst is initially vaporized and then applied to the polyisocyanate polyaddition product by condensation, and to the products prepared therefrom.

Abstract: The present invention relates to polyurethane polymers comprising as part of its polymer backbone biobased ?-hydroxyfatty acids or derivatives thereof, processes for the preparation thereof, and compositions thereof having improved properties. The polyurethanes of the present invention are prepared from copolyester prepolymers comprising the biobased ?-hydroxyfatty acids that may also contain additional components that can be selected from aliphatic or aromatic diacids, diols and hydroxyacids obtained from synthetic and natural sources. The biobased ?-hydroxyfatty acids that comprise the polyurethanes and copolyester prepolymers of the present invention are made using a fermentation process from pure fatty acids, fatty acid mixtures, pure fatty acid ester, mixtures of fatty acid esters, and triglycerides from various sources.

Abstract: A composition capable of radiation activated catalysis is provided. The composition comprises a metal compound, a mercapto compound and an olefinic compound. Radiation curable urethane compositions comprising the disclosed composition are also provided. The radiation curable urethane compositions comprise the disclosed composition, a hydroxyl compound and an isocyanate compound. Activation of the composition by radiation in a urethane formulation provides for an efficient method of curing the urethane composition. Coating and adhesive compositions comprising the radiation curable urethane compositions are also provided. In addition, methods for coating and bonding substrates are disclosed.

Abstract: A formulation for the production of a polyurethane system, in particular a polyurethane foam, containing or consisting of tin and/or zinc ricinoleate(s), optionally tin carboxylate(s), a mixture containing or consisting of urea, sugar alcohol and polyethylene glycol, optionally organic solvent, one or more organic isocyanates having two or more isocyanate functions, one or more polyols having two or more groups which are reactive towards isocyanate, optionally further catalysts for the isocyanate-polyol and/or isocyanate-water reactions and/or isocyanate trimerization, water, optionally physical blowing agents, optionally flame retardants and optionally further additives, a process for the production of polyurethane systems, these polyurethane systems and their use.

Abstract: Novel bioabsorbable and/or biocompatible polyurethanes, polyureas, polyamideurethanes and polyureaurethanes with tunable physical, mechanical properties and hydrolytic degradation profiles are provided for use in biomedical applications such as stents, stent coatings, scaffolds, foams, and films. The disclosed polymers may be derived from biocompatible and/or bioabsorbable polyisocyanates. The present invention also relates to new and improved methods for the preparation of the biocompatible and/or bioabsorbable polyisocyanates.

Abstract: The invention relates to polyisocyanate polyaddition products, to a method for producing same, and to the use thereof.

Abstract: Provided is a polylactic acid-based polyol composition in which a catalyst that remains in the polylactic acid-based polyol and that acts also as a catalyst for urethane formation has been deactivated by easy means. Thus, the polylactic acid-based polyol composition suffers from little influence of the catalyst on urethane formation. When the polylactic acid-based polyol composition is used as a raw material for a urethane resin, therefore, uniform molded products can be obtained. Also provided are a process for the production of the polylactic acid-based polyol composition, a urethane resin composition obtained using the polylactic acid-based polyol composition, a process for the production of the same, and molded products thereof.

Abstract: The present invention relates to a highly reactive isocyanate component comprising an organic isocyanate having at least two isocyanate groups, a catalyst based on an organic metal compound and a compound which comprises an aromatic sulfonyl isocyanate group. The present invention furthermore relates to a process for the production of lignocellulose-containing materials with the use of the highly reactive isocyanate component, such lignocellulose-containing materials and a sealant comprising the highly reactive isocyanate component.

Abstract: The invention relates to polyurethanes that can be obtained by reacting a prepolymer based on diphenylmethane diisocyanate (MDI) with compounds that have NCO-reactive groups, and to use thereof.

Abstract: The present disclosure relates to the preparation of ketal compounds from glycerol and levulinic acid and esters, and uses thereof, in particular the manufacture of polyurethanes.

Abstract: The invention is drawn to a composition comprising a tin(II) 2-hydroxycarboxylate, where the 2-hydroxycarboxylate is preferably selected from the group consisting of glycolate, lactate, mandelate and 2-hydroxybutyrate. The tin(II) 2-hydroxycarboxylates may be prepared by a method comprising the steps of (a) providing an aqueous solution of a tin(II) salt, (b) adding a 2-hydroxycarboxylic acid, or a salt of a 2-hydroxycarboxylic acid, (c) further adding a base, wherein the tin(II) 2-hydroxycarboxylate precipitates, (d) optionally, isolating the tin(II) 2-hydroxycarboxylate, and (e) optionally, drying. The tin(II) 2-hydroxycarboxylates and compositions containing them are useful in oral care applications, and as catalysts for chemical condensation reactions and/or the production of polymers.

Abstract: Radiation-curable compounds, processes for the preparation thereof, the use thereof and coating materials comprising them and having high scratch resistance, which compounds are polyurethanes comprising allophanate groups and obtained by reaction of di- or polyisocyanates and at least two different compounds, each having at least one group reactive toward isocyanate and at least one unsaturated group capable of free radical polymerization.

Abstract: The present invention relates to a process for preparing polyurethanes, which comprise at least three hydrophilic sections, at least four hydrophobic sections, optionally allophanate segments and/or isocyanurate segments and which are prepared in the presence of alkali(ne earth) metal carboxylates. The process may comprise using at least one carboxylic acid salt of at least one metal selected from the group consisting of the alkali metals, the alkaline earth metals and mixtures thereof. Furthermore, the present invention relates to the polyurethanes per se obtainable in this way, to the use thereof as thickeners for aqueous preparations, and to preparations comprising polyurethanes of this type.

Abstract: The invention relates to a process for preparing a thermoplastic polyisocyanate polyaddition product based on polyisocyanate (i) and compounds which are reactive toward polyisocyanate, with or without the use of chain extenders, a first catalyst (iv) and/or auxiliaries and/or additives (v), wherein a second catalyst is initially vaporized and then applied to the polyisocyanate polyaddition product by condensation, and to the products prepared therefrom.

Abstract: The present invention relates to mixtures comprising specifically synthesized radiation-curable, high-functionality, highly branched or hyperbranched polyurethane(meth)acrylates, to processes for preparing them and to their use.

Abstract: The present invention relates generally to polyurethane compositions; and more preferably to thermoplastic polyurethane compositions. In one embodiment, the polyurethane compositions of the present invention have high moisture vapor transmission rates and are suitable for film applications (e.g., breathable films). In one embodiment, the polyurethane compositions of the present invention are prepared from the reaction of a mixed polyol component, a polyisocyanate component, a chain extender, and optionally at least one suitable catalyst, wherein the mixed polyol component is formed by a combination of one or more poly(ethylene oxide) polyols and one or more copolymer polyols, where the resulting mixed polyol component comprises from about 3 to about 30 weight percent of a copolymer polyol and about 70 to 97 weight percent of poly(ethylene oxide) polyol.

Abstract: A process for preparing polyurethane carpet backings uses a filled polyurethane-forming composition that contains a mixture of certain metal acetylacetonate and sulfur-containing organotin catalysts. The mixture of catalysts is particularly beneficial in instances where the composition is processed at temperatures of above 30 to about 500 C, as long pot life is provided together with a rapid thermally-induced cure.

Abstract: The invention relates to the use of polyurethane sealing compounds for the production of light-fast compact or foamed polyurethane bodies or polyurethane urea bodies which have excellent mechanical and optical properties and especially a very high thermostability.

Abstract: The invention relates to an improved method of melt adhesive bonding on the basis of a thermoplastic polyurethane using a thermoplastic polyurethane (TPU) obtainable from essentially a symmetrical aliphatic diisocyanate A and at least one isocyanate-reactive compound B comprising hydroxyl and/or amino groups as an adhesive, wherein the number-average molecular weight (Mn) of compound B is at least 2200 g/mol, with the proviso that it is at least 950 g/mol if compound B is a sebacic ester, diisocyanate A and at least one isocyanate-reactive compound B are reacted in the presence of a catalyst for the polyaddition reaction, the TPU comprises no chain extender, the TPU has an index IN of less than 1000, preferably of less than 990, and more preferably of less than 980, and melt adhesive bonding by the TPU in melt state takes place at a temperature from 50° C. to 160° C. in the absence of solvents, and to substrates bonded therewith.

Abstract: This invention relates to a protected organotin-based catalyst system for polyurethane synthesis that is useful in coatings applications. The catalyst has a formula according to; R1aR2bR3cSn[CH(OX)R4]d, wherein R1, R2, and R3 are the same or different and represent an optionally substituted hydrocarbyl, aromatic, alkoxide, amide, halide or stannyl group, R4 represents an optionally substituted hydrocarbyl or optionally substituted aryl group. a, b, and c are independently 0, 1, 2, or 3; d is 1, 2 or 3; and a+b+c+d=4; and X is an acid-labile or moisture-labile protecting group. When a coating mixture comprising the catalyst is sprayed and/or applied to a substrate as a thin film in air, the catalyst is activated. For solvent-based refinish systems comprising hydroxyl and isocyanate species at high solids levels, the catalyst system therefore provides extended viscosity stability, i.e., pot life.