Abstract: 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.

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: In one embodiment, the invention is a composition comprising: a) one or more isocyanate functional polyether based prepolymers having a polydispersity of less than about 2.5 determined by Gel Permeation Chromatography at a Mp of >1000; b) one or more plasticizers in sufficient amount that the composition can be pumped and applied to a substrate at a temperature of ?10° C., preferably in an amount of about 15 percent by weight or less; c) one or more fillers in sufficient amount such that the composition exhibits a press flow viscosity of about 8 grams per minute or more; d) one or more catalysts for the reaction of isocyanate moieties with isocyanate reactive groups; wherein the composition demonstrates 30 minutes after application a high speed impact of about 1.6 MPa or greater according to DIN EN 1465 high speed impact test.

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: A urethane resin composition obtained by a method comprising the steps of: melt mixing an isocyanate (B), an antioxidant (C), a release agent (D) and a dispersing agent (E) to obtain a molten mixture, and mixing the molten mixture and a polyol (A): wherein the release agent (D) is a compound represented by the following formula (1): [Chemical Formula 1] R1—COOH??(1) the dispersing agent (E) is a compound represented by the following formula (2) having a weight-average molecular weight Mw of no greater than 16000: and the content of the dispersing agent (E) in the urethane resin composition is 0.1 to 5.0 wt %.

Abstract: A process for obtaining a solvent borne polyurethane composition comprising preparing an isocyanate-terminated prepolymer A; reacting the isocyanate groups of isocyanate-terminated prepolymer A with 0.1 to 1.8 stoichiometric equivalents of at least one active-hydrogen containing chain-terminating compound and or chain-extending compound; optionally introducing an isocyanate-terminated compound B; and reacting the isocyanate groups of the isocyanate-terminated prepolymer obtained in the previous steps and isocyanate-terminated compound B with 0 to 1.2 stoichiometric equivalents of at least one active-hydrogen containing chain-terminating compound and or chain-extending compound.

Abstract: A protective coating for protecting a surface has a liquid applied coating having 100% solids and zero solvents and/or zero volatile organic compounds. The resulting protective coating may be clear or transparent to visible light. The liquid applied coating has two or more components that is applied to a surface as a liquid and cured in place to form a solid coating. The liquid applied coating may be cast onto a surface after mixing and spread on the surface to a final desired thickness. The liquid applied coating has a polyurea or polyurethane, or a hybrid polyurea-polyurethane. The polymeric resin system may have dendrimers or hyperbranched polyol or polyamine raw materials in the formulation. The protective coating optionally contains no polyaspartic amines.

Abstract: An ink composition includes a polyurethane resin and at least one selected from a metal compound and hollow resin particles as a colorant, and in the ink composition described above, the polyurethane resin is a polycarbonate-based or a polyether-based anionic polyurethane resin.

Abstract: The invention relates to a coating composition containing at least one polyurethane urea which is terminated with a copolymer unit of polyethylene oxide and poly-C4-C12-alkylene oxide.

Abstract: A product including ultrafine natural glass, methods of producing the ultrafine natural glass, and methods of use thereof are provided. The product may have, for example, a small top cut (d99) particle size of, for example, less than 12 microns. The product may also have high blue light brightness higher than, for example, 69, and/or low oil absorption, for example, less than 100 percent in volume. The product may be used in a variety of applications, such as, for example, anti-block filler in plastic films and/or reinforcement filler in polymers.

Abstract: The invention relates to novel polyurethane ureas which can be used in the production of hydrophilic coatings on various substrates.

Abstract: The invention relates to a polyurethane urea dispersion, wherein the polyurethane urea (1) is terminated with a copolymer unit of polyethylene oxide and poly-C4-C12-alkylene oxide, and (2) comprises at least one polycarbonate polyol containing hydroxyl groups.

Abstract: Thiocarbonate compounds are reacted with various polyols to introduce hydroxyl end groups thereto which can be subsequently reacted with urethane forming compounds to form various polyurethanes including block copolymers thereof.

Abstract: An optical adhesive composition includes a urethane(meth)acrylate resin having at least one hydroxyl group and at least one vinyl group, the urethane(meth)acrylate resin having a curing contraction ratio expressed by Equation 1 of about 0 to about 3%; and an adhesion of about 30 to about 80 kgf: Curing contraction ratio (%)=(A?B)/A×100, ??[Equation 1] where A is a specific gravity of the optical adhesive composition before curing, and B is a specific gravity of the solid optical adhesive composition after curing.

Abstract: The die bonding resin paste of the invention comprises a polyurethaneimide resin represented by the following general formula (I), a thermosetting resin, a filler and a printing solvent. [wherein R1 represents a divalent organic group containing an aromatic ring or aliphatic ring, R2 represents a divalent organic group with a molecular weight of 100-10,000, R3 represents a tetravalent organic group containing 4 or more carbon atoms, and n and m each independently represent an integer of 1-100.

Abstract: An optical adhesive film prepared from an optical adhesive composition, an optical adhesive composition, and an apparatus, the optical adhesive composition including a urethane (meth)acrylate copolymer, a reactive monomer, and an initiator, wherein the optical adhesive film has a tensile strength of about 1 to about 70 gf/mm2 at a thickness of 500 ?m after curing.

Abstract: A fire extinguishing adhesive film includes outer layers of adhesive and an inner fire extinguishing core comprising a layer of resin containing a high concentration of fire retardant. Low levels of fire retardant may be blended into the adhesive layers, although it is preferred that the adhesive be pure. Polyurethane resin allows for a fire retardant loading of 86% by weight in the fire extinguishing core, and therefore provides significantly higher yields of fire retardant per unit area of the film without compromising adhesive performance.

Abstract: The present invention provides methods for preparing polyurethanes from reaction components including: (a) reacting about 1 equivalent of at least one polyisocyanate; and about 0.1 to about 0.5 equivalents of at least one polyol having 2 to 18 carbon atoms to form an isocyanate functional urethane prepolymer; and (b) reacting the isocyanate functional urethane prepolymer, about 0.05 to about 1.0 equivalents of at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups; and up to about 0.9 equivalents of at least one polyol different from the branched polyol and having 2 to 18 carbon atoms, wherein the reaction components are essentially free of polyester polyol and polyether polyol, as well as methods for preparing polyurethanes using a one pot process.

Abstract: An ink jet ink includes a pigment and a polyurethane polymer having units derived from a polyisocyanate, a polyol, and a diol having an acid group, and in the ink jet ink described above, an acid value of the polyurethane polymer is 20 mgKOH/g or more and 100 mgKOH/g or less, the unit derived from the polyisocyanate includes a unit derived from a compound represented by the following general formula (I), and the proportion of the unit derived from the compound represented by the general formula (I) in the unit derived from the polyisocyanate is 90 percent by mole or less.

Abstract: The invention provides aqueous resin emulsion containing a resin obtained by reaction of a composition containing at least: at least one polyhydric alcohol having at least two hydroxyl groups, at least one polyetherpolyol having a molecular weight of 400 to 8000 g/mol, at least one monobasic carboxylic acid, and at least one polybasic carboxylic acid having at least two carboxyl groups or its anhydride, to form a resin and the resin emulsion is modified by providing basic groups. The invention further relates to a process for preparing a resin, to a resin as obtained by the process and to a coating film obtained from the resin emulsion.

Abstract: A polymeric dispersant having a hyperbranched polyurethane architecture obtained by reacting a polyisocyanate core with a mixture of: a) 40 to 65 mol % of an anchor represented by Formula (I) and/or (II): wherein n represents an integer selected from 0 to 7; and X and Y each independently represent a primary amine group or a hydroxyl group; b) 5 to 25 mol % of a polypropylene oxide crosslinker; c) 15 to 40 mol % of a polypropylene oxide graft; and wherein the amount of the crosslinker and the graft taken together is at least 35 mol %; and_wherein 100 mol % of the mixture corresponds with the total amount of isocyanate groups in the polyisocyanate core.

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: There is provided a pigment dispersion including water, an aqueous polymer and a pigment as essential components, wherein the aqueous polymer is a carboxyl group-containing polyurethane which is formed by reacting a diol compound, a diisocyanate compound and a reaction product, which is mainly composed of a compound represented by general formula (1) and prepared by reacting a diol compound having one or two carboxyl groups within each molecule with a diisocyanate compound and which also has a reaction index as calculated by (Formula 1) within a range from 0.95 to 1.10.

Abstract: Polymeric and polymeric composite parts for pumps and a method of manufacturing same are disclosed. More specifically, a valve insert comprising a polymeric seal sized to fit on an outside diameter of a valve closure member for a plunger pump; a pressure packing element ring for a plunger on a plunger pump; and a pressure packing element ring for a push rod on plunger of a plunger pump, each of said articles being formed from a naphthalene-1,5-diisocyanate (NDI) based polyurethane component and an extender.

Abstract: This invention relates to a composition comprising a mixture of: (A) an elastomeric material having a modulus at 100% elongation of 0.1-10 MPa; and (B) a non-reactive silicone fluid having a viscosity of 1,000-3,000,000 mPas at 25° C. The elastomer is preferably a silicone elastomer. The invention also provides an impact-resistant material comprising the composition and a shaped article, e.g. a moulded article, made therefrom. The composition provides impact resistance.

Abstract: The invention relates to adhesives, coating agents and sealing agents curing under the influence of moisture, which exhibit good storage stability, can be processed within a wide tolerance range and are fast-curing.

Abstract: The present invention relates to a method for the production of addition compounds by converting an epoxide component (A) comprising at least two epoxide functions with at least one amine component (B) comprising a primary amine function in a continuous operation in a reactor, with the epoxide component (A) and the amine component (B) being continuously supplied in a molar ratio from 5:1 to 1:50 such that in the reactor a reaction mixture product develops comprising the epoxide component (A) and the amine component (B), as well as the conversion products from the epoxide component (A) and the amine component (B), which is drained from the reactor in the form of a product flow, with 10-100 mol % of the epoxy functions introduced into the reactor via the epoxide component (A) being converted in the reactor. The addition compounds yielded are preferably used as cross-linking and dispersing agents.

Abstract: A robust, two component adhesive for laminating flexible packaging material comprising a mixture of Component A and Component B. Component A comprises an isocyanate-functionalized compound. Component B comprises a mixture of a high functionality polyol containing at least four hydroxyl groups per molecule with at least two primary OH groups on the molecule and two secondary OH groups on the molecule and a trifunctional polyol containing three OH groups on the molecule. Component B can contain a difunctional polyol containing two OH groups on the molecule. The adhesive is robust and retains desirable properties when used at varying A:B mix ratios better than conventional laminating adhesives used at the same mix ratios.

Abstract: A method for producing a color powder, the method comprising dry mixing a pigment powder with a base powder while applying heat, so as to bring the base powder to an adhesive state while the pigment powder remains in a stable state, thereby forming a color powder having agglomerates essentially each comprising a component of the base powder and a component of the ground pigment powder.

Abstract: The present invention relates to compositions with self-cleaning properties. More particularly, the invention concerns coatings or paints comprising particles coated with a catalytically active composition. In particular, a self-cleaning coating composition (paint) is provided, comprising micro-sized particles coated with a functional layer, wherein the micro-sized particles are hollow or solid beads, or any combination/ratio of hollow and solid beads, wherein the beads comprise one or more material(s) selected from ceramic material(s); polymeric material(s); cermet material(s); metallic material(s); pigmented material(s); light-absorbing and/or light reflecting material(s); including any combination thereof, wherein said layer is covalently bound to said particles, wherein the photocatalytic layer comprises TiO2 in the crystal form of anatase; and wherein the coating composition (paint) comprises less than 0.

Abstract: To provide a hot melt adhesive composition employing a thermoplastic polyurethane, which has a high adhesive strength even under bonding conditions of low temperature and short time or even to nylon cloth, and which has a favorable adhesive strength in a wide temperature range of from room temperature to low temperature. A hot melt adhesive composition comprising a thermoplastic polyurethane (A) having a flow initiation temperature of from 80 to 150° C. and a phenolic hydroxy group-containing compound (B) having phenolic hydroxy groups and having a molecular weight of at least 1,000.

Abstract: The present invention provides an oil-dispersible composite of metallic nanoparticles and a method for synthesizing the same. The composite primarily includes metallic nanoparticles and an oily polymeric polymer such as polyurethane (PU). The oily polymeric polymer serves as a carrier of the metallic nanoparticles by chelating therewith so that the metallic nanoparticles are dispersed uniformly. In the method of the present invention, the metallic ions are first chelated by the oily polymeric polymer and then reduced into nanoparticles. The composite of the present invention is about 5 to 100 nm in particle size.

Abstract: A laminate includes a backing material coated with a solvent resistant adhesive composition. The adhesive composition includes a hydroxyl or urea or hydrocarbon terminated unsaturated polyurethane or polyurethane-urea polymer and a peroxide or a silicone hydride.

Abstract: The invention relates to a process for the preparation of a supramolecular polymer comprising 1-50 4H-units, in which a 4H building block is reacted with a prepolymer, wherein a 4H building block comprises a 4H-unit and a reactive group according to Formula (I): wherein 4H represents a 4H-unit, L represents a divalent, trivalent, tetravalent or pentavalent linking group, Fi represents a reactive group, and r is 1-4, is reacted with a pre-polymer comprising a complementary reactive group, wherein the reaction mixture comprising said 4H building block and said polymer comprises less than 10 wt. % of a non-reactive organic solvent, based on the total weight of the reaction mixture.

Abstract: The invention relates to a composition and a method of preparing one such composition and an isocyanatoalkoxysilane; the polyisocyanate composition contains at least two different oligomeric compounds comprising at least three units and at most five units selected from aminoalkylsilane units and diamine units and at least one function selected from isocyanate functions and from those derived therefrom, the aforementioned compounds having at least two aminoalkylsilane units and another compound having at least two diamine units; the invention is suitable for coatings.

Abstract: The invention relates to a crosslinkable one-component lamination adhesive containing a) 25 to 80 wt % of polyester prepolymers, polyether prepolymers, and/or polyurethane prepolymers that comprise at least two crosslinkable silane groups, b) 75 to 20 wt % organic solvent having a boiling point of up to 130° C., c) 0 to 15 wt % additives, the prepolymer having a molecular weight from 2000 to 30,000 g/mol, wherein the viscosity of the adhesive is between 50 and 20,000 mPas (per DIN ISO 2555) measured at 15 to 45° C., and the crosslinked adhesive has a glass transition temperature from ?10 to 30° C.

Abstract: The present invention comprises a novel formulation for marking travel lanes, such as roads, which following the application can be reopened for traffic after a waiting period that is shortened as compared to the prior art.

Abstract: A composition for producing an optically clear, well bonded superhydrophobic coating includes a plurality of hydrophobic particles comprising an average particle size of about 200 nm or less, a binder at a binder concentration of from about 0.1 wt. % to about 0.5 wt. %, and a solvent. The hydrophobic particles may be present in the composition at a particle concentration of from about 0.1 wt. % to about 1 wt. %. An optically transparent, superhydrophobic surface includes a substrate, a plurality of hydrophobic particles having an average particle size of about 200 nm or less dispersed over the substrate, and a discontinuous binder layer bonding the hydrophobic particles to the substrate, where the hydrophobic particles and the binder layer form an optically transparent, superhydrophobic coating.

Abstract: Building segment, in particular of board shape, comprises of mixture of basic component with admixture, comprising of recycled material from textile fibres acquired by defibering process from hardly defiberable multi-composite textiles, which can be supplemented by recycled material from textile pulp acquired by the process of tyres recycling. Basic components advantageously comprises of plaster or polyurethane. During manufacturing of this building segment, textile waste is defibred to textile fibres, which are processed to required length and are homogenized into even layer, and then it is added to the mixture of basic component containing other components.

Abstract: The present invention relates to a composition comprising a hydrophobically modified alkylene oxide polyurethane characterized by having a M, of from 50,000 to about 150,000 Daltons and a polydispersity of 2.5 to about 5.0. The present invention further relates to a multi-step process for the preparation of the hydrophobically modified polymer.

Abstract: A reversible color-changing ink formulation, and a nonwoven wipe to which the ink formulation is securely bound, are provided. The reversible color-changing ink formulation includes about 55-98% by weight of a polymer binder, about 0.1-20% by weight of a reversible color-changing dye that reversibly changes between a first color and a second color at a pH of about 5.5 to about 8.0, and optional amounts of plasticizer, inorganic particulate filler, and color brightener. During use, the nonwoven wipe is impregnated with a sanitizer solution that contains a quaternary ammonium compound. The nonwoven wipe reversibly changes between a first color when impregnated with the sanitizer solution and a second color when the sanitizer solution is depleted during use. The change to the second color indicates the need to recharge the nonwoven wipe with the sanitizer solution, whereupon the first color returns.

Abstract: The present application discloses a wind turbine blade having on the outer surface thereof a polyurethane-based coating including a polyurethane binder prepared from polyol(s) having an average functionality of ?2.0 and <8.0; at least 50% (w/w) of the polyols have aliphatic polyester segments included therein and have a Mw of 300-3,000 g/mol; and polyisocyanate(s) having an average functionality of <3.0; at least 50% (w/w) of the polyisocyanate(s) are selected from: (i) polyisocyanates having aliphatic polyester segments included therein, and having a molecular weight of 500-3,000 g/mol and a functionality of ?2.0 and <3.0; (ii) polyisocyanates of the allophanate type having a Mw of 250-2,000 g/mol and a functionality of ?2.0 and <3.0; and (iii) polyisocyanates of the uretdion type having a Mw of 250-2,000 g/mol and a functionality of ?2.0 and <3.0. The application also discloses corresponding coating compositions and a method for coating a substrate.

Abstract: An ink composition includes a polyurethane resin and at least one selected from a metal compound and hollow resin particles as a colorant, and in the ink composition described above, the polyurethane resin is a polycarbonate-based or a polyether-based anionic polyurethane resin.

Abstract: The present invention relates to glycine derivatives as additive for an aqueous polyurethane dispersion. Said glycine derivatives can increase the fluidity of aqueous polyurethane dispersion and therefore is useful for preparation of aqueous polyurethane dispersion with high solid content. Besides, the glycine derivatives are able to significantly decrease the viscosity of aqueous polyurethane dispersion; therefore, the aqueous polyurethane dispersion with high solid content can be stored stably.

Abstract: Polymer composite roofing materials are provided which contain resin, and about 20-75 wt. % fillers and additives, in which the fillers contain at least one bulk filler for reducing the amount of resin needed to make the roofing material, and at least one aesthetically functional filler for providing the roofing material with an aesthetic appearance. The bulk filler and the aesthetically functional filler of this embodiment are non-toxic, resistant to microbial attack, and have a Mohs hardness of less than about 5.

Abstract: A tire includes at least one outer structural element, wherein the at least one outer structural element is at least partially coated by at least one colored coating layer including a colored composition including (a) 5% by weight to 50% by weight with respect to the total weight of the dry colored composition, of at least one crosslinked polymeric compound obtained by reacting (a1) at least one thermoplastic polyurethane with (a2) at least one polyisocyanate; (b) 10% by weight to 80% by weight with respect to the total weight of the dry colored composition, of at least one thermoplastic polymeric compound having a glass transition temperature higher than or equal to 20° C., and (c) 3% by weight to 50% by weight, with respect to the total weight of the dry colored composition, of at least one coloring agent. Preferably, the at least one structural element is at least one of the tire sidewalls.

Abstract: The present invention relates to a polyurethaneurea solution having a polyurethaneurea having a structural unit of the formula (I) and terminated with at least one copolymer unit of the group consisting of a polyethylene oxide, a polypropylene oxide, and mixtures thereof.

Abstract: The present invention relates to polymerizable compounds, comprising 5-50% by weight polyurethane, having at least one soft segment and 30-95% by weight alkylmethacrylate having 1-6 carbon atoms in the alkyl radical, wherein the polyurethane has a molecular weight in the range from 5,000-200,000 daltons, curable compositions comprising the inventive polymerizable compounds, and coatings and impact-resistant objects made from the curable compositions.

Abstract: Disclosed is an aqueous polyurethane obtained by reacting a sulfonate containing a hydrophilic group represented by the following general formula (1): (in which M represents an alkali metal atom or an ammonium, and p represents an integer of 2 to 20) and an amino group with a polyurethane prepolymer having an isocyanate group at an end thereof, characterized in that the hydrophilic group represented by the general formula (1) bonds with a urea bond moiety of the polyurethane.

Abstract: The present invention concerns shape memory composites, methods of preparing same and the use of these composites, for example, for products prepared by injection molding techniques or coating applications.