Abstract: Disclosed is a polyurethane resin which is obtained by a reaction between a polyisocyanate component, which contains 1,4-bis(isocyanatomethyl)cyclohexane including not less than 80% by mole of trans isomers, and an active hydrogen compound component.

Abstract: The curable resin composition of the present invention comprises a polyol component containing tri- or higher functional polycaprolactone polyol; and a polyisocyanate component containing bifunctional or trifunctional alicyclic isocyanate having one or more chemical structures in which an isocyanate group is bonded to a secondary carbon atom.

Abstract: Stable aqueous poly(urea/urethane) polymers and dispersions are made that do not require the inclusion of chain extenders, curing agents or crosslinking agents. The disclosed poly(urea/urethane) dispersions can be used to make articles such as films and gloves with reduced chance of chemical and biological allergic reaction to skin, and which exhibit improved puncture and tear resistance when compared to such articles made with other materials.

Abstract: A composition comprises (A) a blend of (a) at least one first natural oil polyol prepared by a first process, and (b) at least one second natural oil polyol different from the first natural oil polyol, prepared by a second process; or (B) a prepolymer prepared from at least one first natural oil polyol prepared by a first process, and (b) at least one second natural oil polyol different from the first natural oil polyol, prepared by a second process; or (C) at least one prepolymer prepared from (a) at least one first natural oil polyol prepared by a first process, and (b) at least one second natural oil polyol different from the first natural oil polyol, prepared by a second process. Polymer preparable from a composition of the invention and at least one monomer interpolymerizable therewith. The polymer is most preferably a polyurethane. A process of preparing a polymer comprises (a) admixing at least one such composition with at least one monomer interpolymerizable therewith.

Abstract: The present invention relates to polyurethane powder coating compositions that do not split off blocking agents and have a low stoving temperature. The powder coating compositions contain a hydroxyl functional binder component having a content of carboxyl groups of from 0.5 to 2.0 wt. %, a polyaddition compound, at least one zinc compound as a hardening catalyst, and a compound reactive to carboxyl groups.

Abstract: A transparent, non elastomeric, high index, impact resistant polythiourethane/urea material comprising the reaction product of: a) at least one (?, ?)-diiso(thio)cyanate cycloaliphatic or aromatic prepolymer having a number average molecular weight ranging from 100 to 3000 gmol?1, and b) at least one primary diamine, in an equivalent molar ratio amine function/iso(thio)cyanate function from 0.5 to 2, preferably from 0.90 to 1.10, wherein, said prepolymer and diamine are free from disulfide (—S—S—) linkage and at least one of the prepolymer or the diamine contains one or more S atoms in its chain.

Abstract: To provide a polyurethane resin composition which exhibits high gas-barrier property and excellent adhesion to various polymers, paper, metals, etc., which can prevent generation of cracks or pinholes in a gas-barrier layer through flexion treatment, and which exhibits excellent content resistance; an adhesive containing the resin composition; and a multi-layer film containing the adhesive. The invention provides a polyurethane resin composition containing an active hydrogen compound (A) formed by adding m-xylylene diisocyanate and/or hexamethylene diisocyanate to a specific compound (C) at a reaction equivalent ratio ([the number of isocyanate groups]/[the number of hydroxyl groups]) of 0.80 to 0.

Abstract: A rigid thermoplastic polyurethane made by reacting a diisocyanate with a diol, wherein the diisocyanate includes a mixture of positional and geometric isomers of bis(isocyanatomethyl) cyclohexane.

Abstract: The invention relates to relates to moisture-hardened hot melt adhesive which contains at least one polyurethane polymer of formula (I) which comprises aldimine groups and which is solid at room temperature, in addition to at least one polyurethane polymer P which comprises isocyanate groups, if q in formula (I) represents zero, or if X in formula (I) represents N—R8 with R8 as a substituent of formula (III). The compositions are characterised in that contain visibly less isocyanate monomers and are therefor particularly advantageous from a work-hygiene point of view.

Abstract: Provided are hermoplastic polyurethanes prepared from reactants comprising: (a) polytrimethylene ether glycol; (b) diisocyanate; (c) diol chain extender; and (d) monofunctional isocyanate reactive alcohol or amine. Also provided are methods of manufacturing the polyurethanes.

Abstract: A prepolymer system has a monomeric isocyanate content of no greater than about 10% by weight based on 100 parts by weight of the prepolymer system. The prepolymer system comprises a diluent component and a prepolymer component different than and separate from the diluent component. The diluent component has an excess of isocyanate (NCO) functional groups, and comprises the reaction product of a monohydric isocyanate-reactive component and an excess of a first isocyanate component. The first isocyanate component comprises monomeric isocyanates reactive with the monohydric isocyanate-reactive component. The prepolymer component also has an excess of NCO functional groups, and comprises the reaction product of a polyol component and an excess of a second isocyanate component. The prepolymer system can be used to prepare foams via reaction with water. The foams have low density and have excellent adhesion and sound dampening properties for use in cavities of automobile bodies.

Abstract: A process for preparing a carboxyl functional polyuretdione resin composition for use in powder coating compositions comprising the steps of: a) reacting at least one isocyanate (NCO) functional uretdione with at least one alcohol in a ratio of free NCO groups to hydroxyl groups in a range of 0.5:1 to 0.5:3, and, b) reacting the resulted hydroxyl functional polyuretdione with di- and/or polyfunctional acid(s) and/or their anhydride(s), wherein the carboxyl value of the resulting resin has a value in the range of from 20 to 300 mg KOH/g.

Abstract: A compound represented by the Formula (1) below is provided: wherein X denotes a divalent linking group, R1 and R2 independently denote an alkyl group having 3 or more carbons and having at least one hydroxy group or an aralkyl group having 8 or more carbons and having at least one hydroxy group, the alkyl group and aralkyl group may have a substituent, and M denotes a hydrogen atom or a cation. There is also provided a polyurethane resin obtained by polymerization of a polyisocyanate and a polyol that includes the compound. There is also provided a magnetic recording medium that includes a non-magnetic support and, above the support, at least one magnetic layer including a ferromagnetic powder dispersed in a binder that includes the polyurethane resin.

Abstract: A compound represented by the Formula (1) below is provided: wherein X denotes a divalent linking group, R1 and R2 independently denote an alkyl group having 3 or more carbons and having at least one hydroxy group or an aralkyl group having 8 or more carbons and having at least one hydroxy group, the alkyl group and aralkyl group may have a substituent, and M denotes a hydrogen atom or a cation. There is also provided a polyurethane resin obtained by polymerization of a polyisocyanate and a polyol that includes the compound. There is also provided a magnetic recording medium that includes a non-magnetic support and, above the support, at least one magnetic layer including a ferromagnetic powder dispersed in a binder that includes the polyurethane resin.

Abstract: Unsymmetrical polyurethane polyol prepolymers are disclosed for use in the formation of coating compositions. The prepolymers are prepared as a reaction product of a diisocyanate with a short chain aliphatic diol and a long chain polymeric diol. The prepolymers are intended as the first component for reaction with a second component polyisocyanate in a two-component coating composition. The coating compositions exhibit excellent abrasion resistance and weatherability, and are particularly useful as coatings for polymeric window transparencies.

Abstract: A building or construction material comprises a fluorinated polymer system. The fluorinated polymer system is heat weldable and waterproofing, which shows improved adhesion properties and has a wide range of applications in building and construction industries.

Abstract: Provided are a urethane resin solution to provide a urethane resin having a low tensile elasticity, a low elastic modulus under low temperatures, good elastic recovery, excellent heat resistance and excellent adhesion, a production method of the solution and a production method of the urethane resin. An isocyanate group-terminated prepolymer is synthesized by reacting a polyisocyanate compound with a polyetherester diol having a molecular weight of from 800 to 4,000, which is obtained by a ring-opening polymerization of a mixture of an alkylene oxide and a lactone monomer using a polyoxy tetramethylene diol having a molecular weight of from 500 to 2,500 as an initiator and using a composite metal cyanide complex catalyst if necessary, and the resulting prepolymer is reacted with a chain extender, for example, comprised of a low molecular weight diamine and/or a low molecular weight diol, in an organic solvent.

Abstract: The present invention is a low haze thermoplastic polyurethane (TPU) prepared from a chain extender mixture that includes an acyclic diol and a mixture of 1,3- and 1,4-cyclohexanedimethanol. The TPU elastomers exhibit good optical clarity, particularly when formed into relatively thick injection molded parts.

Abstract: The invention relates to high-reactivity polyurethane compositions. The invention further relates to low temperature curable polyurethane compositions which contain uretdione groups, particularly useful for polyurethane powder coating compositions and adhesive compositions, and to processes for preparing and using the same.

Abstract: The invention relates to starting compounds which can be used for the preparation of polyurethanes and can be prepared by reaction of hydroxyl-containing oligomers of formaldehyde.

Abstract: Disclosed is a polymer having excellent solvent resistance which can be produced by using a polycarbonate diol having a repeating unit represented by the formula (1) and/or (2), having a hydroxyl group at both termini, and having a number average molecular weight of from 300 to 50,000: wherein R1 represents a linear or branched hydrocarbon group having 2 to 50 carbon atoms; and n represents an integer of 2 to 50, wherein R2 represents a linear or branched hydrocarbon group having 10 to 50 carbon atoms.

Abstract: A composite article and method for manufacturing the same are disclosed. In one embodiment, a polyurethane-polyurea layer is disposed on a substrate. The polyurethane-polyurea layer includes a reaction product of an isocyanate component having from about 10% to about 90% of a toluene diisocyanate, by weight of the isocyanate component, and an isocyanate-reactive component having amine-terminated and/or hydroxyl-terminated compounds. The polyurethane-polyurea layer provides blast and fragment protection from explosive devices as well as ballistic mitigation.

Abstract: The present invention is a radiation curable resin composition comprising: (A) a urethane (meth) aerylate which is a reaction product of a polyol, a polyisocyanate, and a hydroxyl group-containing (meth) aerylate; (B) a compound having a cyclic structure and one ethylenically unsaturated group; (C) from about 0 to about 5 mass % of a compound having two or more ethylenically unsaturated group; and (D) a polyol having a number average molecular weight of about 1500 or more. In another embodiment of the invention component (A) must include a polyester polyol and the polyol of component (D) must have a number average molecular weight of from about 500 to about 1500. The composition is useful for coating electric wire.

Abstract: An optical polyurethane resin composition contains a polyisocyanate component including at least one cyclic polyisocyanate selected from the group consisting of alicyclic polyisocyanates, aralkyl polyisocyanates, and modified compounds thereof; and a polyol component having an average hydroxyl value of 280 to 1240 mg KOH/g and an average functionality of more than 2 and less than 5.

Abstract: Provided is a binder for an electrode mix containing a semi-interpenetrating polymer network (semi-IPN) of polyvinyl alcohol and polyurethane, wherein the polyurethane is mixed to crosslink with the polyvinyl alcohol to form semi-IPN, and a lithium secondary battery comprising the same. The binder has superior adhesion to the electrode, excellent electrolyte resistance and improved elongation percentage, and therefore it is possible to prevent exfoliation or separation of electrode active materials from current collectors which occurs during repeated charge/discharge cycles. As a result, the capacity or power out of secondary batteries can be maintained at a constant level.

Abstract: A polyurethane that is a reaction product of reaction components, the reaction components comprising (a) a polyol; (b) a polyisocyanate selected from an aromatic, alicyclic or aliphatic polyisocyanate or combinations thereof; (c) a mixture of chain extenders that includes (i) a chain extender having a sulfur bridge in an amount of between 1 and 30 weight percent of the total mixture of claim extenders and (ii) a main chain extender, wherein the chain extender having a sulfur bridge. The chain extender having a sulfur bridge may be characterized as R1-A-Sx—B—R2 wherein R1 and R2 are selected from an OH, an NH2 or combinations thereof, A and B are selected from a divalent aliphatic, alicyclic or aromatic organic group or combinations thereof, A and B may be the same or different and x is an integer of between 2 and 10.

Abstract: The invention relates to a process for preparing binders which contain 1) allophanate groups, 2) groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups) and 3) optionally NCO-reactive groups, by reacting at temperatures ?130° C. A) one or more NCO-functional compounds containing uretdione groups with B) one or more compounds that contain isocyanate-reactive groups and groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups), and then C) with one or more saturated, hydroxyl-containing compounds other than B), at least one of these compounds having an OH functionality of ?2, in the presence of D) a catalyst containing one or more ammonium salts or phosphonium salts of aliphatic or cycloaliphatic carboxylic acids, the reaction with compounds C) taking place at least proportionally with the formation of allophanate groups.

Abstract: Derivatized solid epoxy resins of the formula (I), which are outstandingly suitable as impact modifiers; and compositions which include such derivatized solid epoxy resins and are outstandingly suitable as one-component heat-curable adhesives, and as structural foams which have a high impact resistance and high mechanical stability.

Abstract: The invention relates to compact plastics mouldings having bulk densities of >1000 kg/m3, high strength, bending strength and high heat resistance, and to their use.

Abstract: This invention employs a polyol derivative of a fatty acid that is reacted into a polyurethane formed also with a urethane prepolymer, a polydiene, and optionally, a curative for cross-linking. The fatty acid moiety becomes a relatively short side chain of the polyurethane formed. In embodiments, the polyol is an ester of the fatty acid. This achieves reduction in hardness of the polyurethane with a homogeneity that provides consistent surface characteristics over an extended period desirable for use for electrophotographic development and the like when the material is used as a developer roller.

Abstract: An isocyanate-reactive component is disclosed that reacts with a liquid polyisocyanate or polyisocyanate prepolymer in the preparation of a polyurethane-polyurea polymer. In one embodiment, a polyisocyanate component is reacted with an isocyanate-reactive component. The polyisocyanate component has an NCO group content of about 3% to about 50% and an average functionality of about 2 to about 3. The isocyanate-reactive component includes from about 20% to about 90% by weight, based on 100% by weight of the isocyanate-reactive component, of at least one organic compound having a mercaptan functional moiety.

Abstract: Polyurethane and polyurea compositions for golf balls with improved stability of the curative blend, wherein the curative blend includes a pigment, a curing agent, and a compatible freezing point depressing agent so that the curative blend has a lower freezing point than the curing agent by itself and the blend does not lose pigment dispersion upon solidification and subsequent thawing.

Abstract: A cleaning blade member comprising a polyurethane formed by using a polyol consisting essentially of a polycarbonatediol, a polyisocyanate, and a crosslinking agent containing a short chain diol and a triol, the polyurethane having a tensile strength at 60° C. of 200 kg/cm2 or higher, and a tensile strength retention ?T, represented by the following equation, of 40% or more: ?T(%)=T60/T10×100 where T10 denotes a tensile strength at 10° C., and T60 denotes the tensile strength at 60° C.

Abstract: Reactive hot melt adhesives compositions with long open time and/or high green strength are prepared by the use of urethane diols. These results are achievable at moderate/low application viscosity or low application temperature.

Abstract: There are provided a moisture-curable polyurethane hot melt adhesive containing a urethane prepolymer obtained by reacting a polyol (A) with a polyisocyanate (B), wherein the polyol (A) contains 40 to 80 mass % of a polycarbonate polyol (a1), 5 to 40 mass % of polytetramethylene glycol (a2), and 5 to 40 mass % of a polyester polyol (a3) obtained by reacting a polycarboxylic acid containing an aliphatic polycarboxylic acid and an aromatic polycarboxylic acid with a polyether polyol obtained by adding an alkylene oxide to bisphenol A, based on the total amount of the polyol (A), and a multilayer sheet using this adhesive. This adhesive can maintain excellent adhesion strength even after washing is repeatedly performed under stringent washing conditions without impairing soft texture of a multilayer sheet.

Abstract: The present invention relates to a spray-polyurethane system which comprises a polyol component (A) and an isocyanate component (B), where the polyol component (A) comprises a1) at least one compound reactive with isocyanate, a2) at least one reactive chain extender having at least two groups reactive toward isocyanates, where at least one group reactive toward isocyanates is a free, primary NH2 group, and also a3) at least one metal catalyst, and a4) if appropriate, further additives, where the spray-polyurethane system comprises no amine catalyst. The present invention moreover relates to a process for production of a backing layer composed of polyurethane for moldings and to the use of this backing layer for production of automobile parts. Inventive backing layers have good mechanical properties, and low emissions, and their demolding time is small when compared with the open assembly time.

Abstract: A polyol includes the reaction product of an epoxidized oil and an organic acid. The epoxidized oil and the organic acid are reacted in the presence of a Lewis base catalyst including at least one of a phosphorous atom or a nitrogen atom. The polyol is formed by a method that includes the step of reacting the epoxidized oil with the organic acid in the presence of the Lewis base catalyst.

Abstract: A blade for electrophotographic apparatus which has a blade member formed of a polyurethane resin, wherein the polyurethane resin is a resin produced by using a polyurethane raw-material composition containing at least the following components (A) to (E): (A) a polyisocyanate; (B) a polyol having a number average molecular weight of 2,000 or more and 4,000 or less; (C) a chain extender having a molecular weight of 200 or less: (D) a polyol having a number average molecular weight which is smaller than the number average molecular weight of the component-(B) polyol and is larger than the molecular weight of the component-(C) chain extender; and (E) a urethane curing catalyst.

Abstract: The present invention relates to adducts useful for improving the toughness and curable compositions using such toughening adducts. In a particular aspect, the present invention relates to inventive toughening adducts and curable compositions having improved fracture toughness using those toughening adducts.

Abstract: Stable aqueous poly(urea/urethane) polymers and dispersions are made that do not require the inclusion of chain extenders, curing agents or crosslinking agents.

Abstract: There are provided a novel ethylenically unsaturated group-containing isocyanate compound, a process for producing the same, and a reactive monomer produced from the isocyanate compound, a reactive polymer and its use. The ethylenically unsaturated group-containing isocyanate compound according to the present invention is represented by formula (I).

Abstract: A polyurethane acrylate (A), comprises, as synthesis components, (a) at least one polyisocyanate which comprises isocyanurate groups, based on 1-isocyanato-3,3,5-trimethyl-5-(isocyanatomethyl)cyclohexane, (b) at least one polyisocyanate which comprises isocyanurate groups, based on hexamethylene diisocyanate, (c) at least one aliphatic and/or cycloaliphatic diisocyanate, (d1) at least one polyetherdiol or polyesterdiol having a molecular weight ranging from 500 to 2000, (d2) optionally, at least one diol having a molecular weight of less than 220 g/mol, (e) at least one compound having at least one group reactive toward isocyanate and at least one unsaturated group capable of free radical polymerization, and (f) optionally, at least one compound having exactly one group reactive toward isocyanate.

Abstract: A highly reactive polyurethane powder coating composition, which contains uretdione groups that are hardenable at low temperatures, contains A) at least one uretdione-containing powder coating hardener based on aliphatic, (cyclo)aliphatic or cycloaliphatic polyisocyanates and hydroxyl-containing compounds, the hardener having a melting point of from 40 to 130° C., a free NCO content of less than 5% by weight, and a uretdione content of 6-18% by weight; B) at least one hydroxyl-containing polymer having a melting point of from 40 to 130° C., and an OH number of between 20 and 200 mg KOH/g; C) 0.001-3% by weight of at least one tetraalkyl ammonium carboxylate catalyst, based on a total amount of components A) and B). Components A) and B) are present in a ratio so that for each hydroxyl group of component B) there is from 0.3 to 1 uretdione group of component A).

Abstract: This invention relates to a moisture-curable silylated resin-containing composition containing, inter alia, moisture-curable silylated resin, the cured composition exhibiting low permeability to gas(es).

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: The present invention relates to a process for producing a polyurethane elastomer fiber, which comprises a) reacting polymeric diol with a substance reactive therewith to form an OH-terminated prepolymer, b) reacting the OH-terminated prepolymer with a diisocyanate to form an isocyanate-terminated prepolymer, c) reacting the isocyanate-terminated prepolymer with a chain extender, if appropriate a chain-terminating agent and if appropriate further additives to form the polyurethane elastomer, and d) spinning the polyurethane elastomer to form a fiber, in which there are less than 15% by weight of further polyurethane elastomers in the fiber. The present invention further relates to a polyurethane elastomer fiber obtainable by such a process, to its use for producing textiles, for example wovens or knits, and also to the use of a polyurethane elastomer for producing such a fiber.

Abstract: Moisture curable reactive hot melt adhesive compositions are prepared using a novel two-step polymerization process. Resulting adhesives have improved green strength.

Abstract: The present invention is a transparent thermoplastic polyurethane (TPU) comprising structural units of: a.) a diisocyanate; b.1) a polyester diol and b.2) a specific polyether diol and c.) a chain extender. The TPU has good combinations of light transmission and clarity, tensile strength, low temperature flexibility, and high moisture vapor transition rates compared to other commercial or known TPUs. A preferred example composition is a TPU that is based on MDI as the diisocyanate monomer, polycaprolactone as a polyester diol, an EO capped EO/PO polyether diol containing less than 20% EO, and butanediol as chain extender. These composition have good combinations of clarity, tensile strength, hydrolytic stability and processability compared to TPUs prepared using either polyester or polyether diols alone or the combination with a higher EO polyether diol.

Abstract: This invention relates to flexible cycloaliphatic diisocyanate trimers and a process for the preparation of these. These flexible products are allophanate-modified, partially trimerized cycloaliphatic diisocyanates and are characterized by a low Tg. More specifically, the Tg of the resultant product ranges from about ?30° C. to about 40° C., after the excess monomer has been removed from the product.

Abstract: The present techniques relate to thiourethane compositions formed by reacting a reactive composition containing active molecules having an average of at least one thiol group per active molecule and an average of at least one hydroxyl group per active molecule with a monomer composition containing monomer molecules having an average of at least two isocyanate groups per monomer molecule. The reactions are performed in the presence of an amine catalyst, which may preferentially react thiol groups over hydroxyl groups, thus forming a thiourethane composition having, on average, more hydroxyl groups than thiol groups and more thiourethane groups than urethane groups, on a normalized basis.