Abstract: A method is disclosed for producing a modified polyester having improved rheological and mechanical properties. The method is characterised in that a polyester is mixed with a hyperbranched polymer (HBP), they are then melted down, the melted mixture is cooled to form a solid, and the solid mixture is then subjected to a solid phase postcondensation. A product is also disclosed which is produced according to the method, the postcondensed mixture being processed to form the product.

Abstract: Powder coating composition for automotive exterior coatings with compatibility with other coatings and resistance to yellowing include a film-forming material such as a polyepoxide and an acid-functional crosslinker that is a reaction product of 1,3,5-tris(2-hdyroxyethyl)isocyanurate and a cyclic anhydride.

Abstract: The present invention provides copolyester compositions and novel methods employing such compositions. The copolymer compositions comprise a copolyester containing a low polarity block in the copolyester backbone, thereby resulting in adhesive and coating materials that exhibit improved flow and wettablility and superior initial adhesion and retained adhesion to various substrates.

Abstract: A wiring substrate includes (1) an insulating substrate having an opening, or a core substrate and a build-up layer wherein at least one of the core substrate and the build-up layer has an opening, (2) at least one electronic part disposed in the opening, and (3) an embedding resin comprising a thermoplastic resin, an acid anhydride curing agent, a curing accelerator, and a filler, wherein the embedding resin shows a viscosity of not higher than 85 Pa·s in a shear rate of 8.4 s−1 after allowing to stand for 24 hours at 25° C.±1° C.

Abstract: A polybutylene terephthalate resin having 30 eq/t or less of carboxyl end group, a crystallization temperature in a temperature decrease of 175° C. or higher and an amount of residual tetrahydrofuran of 300 ppm by weight or less; and compositions and molded articles comprising the resin and glass fiber, antioxidants and mold-releasing agents is provided. The polybutylene terephthalate resin can be molded in a short molding cycle, exhibits excellent resistance to hydrolysis and mold-releasing property, causes no corrosion of metals and generates little gas during molding. The compositions and the molded articles exhibit improved impact resistance, stability under heating and oxidation and mold-releasing property and can be advantageously used for members in electric and electronic products and in automobiles.

Abstract: A composition having sealing and sound dampening properties is disclosed which comprises one or more polyepoxides comprising at least two epoxide groups per molecule; a thermoplastic polyester polymer; a curing agent adapted to react with the polyepoxides; inorganic particles having an oil absorption value of less than 70; and inorganic microparticles different from the previously mentioned inorganic particles, the inorganic microparticles having an average particle size prior to incorporation into the composition ranging from 0.5 to 200 microns. Multilayer composites, coated substrates, and methods for forming sound dampening coatings on a metallic substrate are also provided.

Abstract: A coating compound comprising a binder/crosslinking agent system that comprises 20 wt. % to 80 wt. % of one or more carboxyl-functional components A) and 80 wt. % to 20 wt. % of one or more epoxy-functional (meth)acrylic copolymers B).

Abstract: A method of joining electrically conductive materials comprises: Applying an electrically conductive adhesive to at least one electrically conductive material(s), wherein the electrically conductive adhesive is prepared from an epoxide-modified polyurethane, a cross-linking agent, an adhesion promotor and a conductive filler; and joining the electrically conductive material(s) with the applied adhesive to a substrate and curing the adhesive.

Abstract: Thermosetting coating compositions containing amorphous and semi-crystalline polyesters are provided. They are useful in coating compositions, especially for low temperature powder coating applications. Novel semi-crystalline polyesters useful in the above coating compositions are also provided.

Abstract: Monofunctional polyfluorooxetane oligomers and polymers are prepared by the cationic polymerization of fluorooxetane monomers with a monoalcohol. The fluorooxetane oligomers or polymers can be copolymerized with generally cyclic ethers. Alternatively, the polyfluorooxetane oligomer or polymer having a single hydroxyl end group can be functionalized with a variety of compounds so as to yield a functional end group such as an acrylate, a methacrylate, an allylic, an amine, etc., with the functionalized oligomer or polymer being suitable for use in radiation curable or thermal curable coating compositions. These functionalized polymers can be copolymerized and cured to provide improvements in wetting and surface properties that have previously been provided by migratory chemicals such as waxes and oils.

Abstract: Flexible epoxy-based adhesive compositions which remain Theologically stable at room temperature in an uncured state comprise: (a) at least one flexible polyepoxide resin having a hardness not exceeding a durometer Shore D reading of 45 when cured with a stoichiometric amount of diethylene triamine (“DETA”); and (b) a substantially stoichiometric amount of at least one latent epoxy resin curing agent. Optionally, the adhesive composition may also incorporate one or more semi-flexible resins. Other optional components include fillers, thixotropic agents, and flexibilizers. The adhesive composition provicdes an epoxy-based adhesive composition that is storable for weeks as a single component mixture at room temperature, curable at temperatures ranging from about 100° C. to 125° C. in less than two hours, and flexible upon curing to temperatures as low as minus 50° C., exhibiting a durometer Shore A of less than about 95.

Abstract: The present invention relates to a polyester block copolymer composition which is obtained by reacting 0.5 to 5.0 parts by weight of an epoxy compound (C) having two or more functionalities with 100 parts by weight of a polyester block copolymer (P) having an acid value of 0 to 5 mgKOH/g obtained by reacting a crystalline aromatic polyester (A) having a hydroxyl group at a molecular terminal with a lactone (B) and optionally with a polyfunctional compound (D) having three or more groups selected among carboxyl, hydroxyl, and/or ester groups thereof. The composition has such excellent moldability that it is applicable to molding techniques including blow molding without arousing any trouble. It is satisfactory in heat resistance, water resistance, impact resistance, or flame retardancy, and has rubber-like elasticity.

Abstract: The invention concerns a polyester bearing tertiary carboxyl groups, characterised in that it consists of: (a) 8.1 to 35 moles of an aliphatic or cycloaliphatic of a polyol; (b) 9.1 to 36 moles of an aliphatic, cycloaliphatic or aromatic polycarboxylic acid; (c) 1.6 to 2.8 moles of an aliphatic, cycloaliphatic or aromatic compound comprising a tertiary carboxyl group and either a primary or secondary carboxyl group, or a primary or secondary hydroxyl group. Said polyester is prepared in several steps, the first steps consisting in the preparation of a polyester by condensation between (a) an aliphatic or cycloaliphatic polyol, and (b) an aliphatic, cycloaliphatic or aromatic polycarboxylic acid, the final step consisting in condensing said polyester with (c) an aliphatic, cycloaliphatic or aromatic compound comprising a tertiary carboxyl group and either a primary or secondary carboxyl group, or a primary or secondary hydroxyl group.

Abstract: Provided is a crosslinking agent which is the ungelled reaction product of a polyester polyol and an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The polyester polyol is the reaction product of a cycloaliphatic polyol and a cyclic polycarboxylic acid or anhydride. The crosslinking agent is essentially free of hydroxyl functionality and has a glass transition temperature of at least 10° C. Further provided is a powder coating composition including a solid particulate film-forming mixture of a polymer containing reactive functional groups and having a Tg of at least 30° C., and the crosslinking agent. Additionally provided is a multi-layer composite coating composition having a basecoat layer deposited from a basecoat film-forming composition and a topcoat over the basecoat deposited from the previously described powder coating composition. Coated substrates are also provided.

Abstract: An adhesive useful in forming composites includes components A and B. Component A includes at least one polyester with a molecular weight (Mn) of at least 8000 and has a total enthalpy of fusion of at most 20 mJ/mg. Component B includes at least one polyester with a molecular weight (Mn) of less than 8000 and a glass transition temperature of at most 60° C. The adhesive preferably has a melt viscosity of 500 to 25,000 mPas (Brookfield RVT DVII, 140° C., spindle 27) and a softening point of 70 to 100° C. (ASTM E28).

Abstract: A process for preparing a heat curable powder coating composition comprises exposing a powder comprising a carboxyl-functional polymer and a polyepoxy compound to an amine selected from the group consisting of organic amines and ammonia under mild conditions, particularly temperatures of between −30° C. and 50° C.

Abstract: By heating at above the melting point and/or glass transition point of the polycondensate and adding an aromatic dicyanate; or adding a mixture comprising an aromatic dicyanate and a polyfunctional compound selected from the class of sterically hindered hydroxyphenyl-alkyl-phosphonic esters and monoesters, diphosphonites and secondary aromatic amines; or adding a mixture comprising (i) an aromatic dicyanate, (ii) at least one polyfunctional compound selected from the class of sterically hindered hydroxyphenyl-alkyl-phosphonic esters and monoesters, diphosphonites and secondary amines, and (iii) a difunctional epoxide, it is possible to bring about an increase in the molecular weight and/or viscosity of virgin polycondensate and polycondensate recyclates.

Abstract: A polyester polymer includes at least one hydroxyl terminated polyoxetane block containing repeat units derived from polymerizing at least one oxetane monomer having a pendant —CH2—O—(CH2)n—Rf group wherein said Rf group is partially or fully fluorinated. A preferred process for forming said polymer is by reacting a hydroxyl terminated polyoxetane with a polycarboxylic acid under appropriate conditions to form an ester linkage and then adding and reacting that product with polyester forming reactants. The polyester polymer containing at least one polyoxetane block therein when reacted with an amino resin curative can be used as a coating on a substrate wherein the coating has dry erase properties. The coated substrate can be used as prepared or applied to yet other substrates.

Abstract: An epoxy resin composition having a viscosity of from 50 to 400 P at 25° C. is disclosed. The composition provides by casting a resin plate, particularly a transparent resin plate for a liquid crystal display, which has satisfactory thickness precision.

Abstract: The polymer of the present invention is derived from cyclic ether monomers, dioxane, dioxalane or trioxane and contains both pendant Rf fluoro groups as well as polar groups. These polymers have good wetting, or flow, or leveling properties. They can be reacted with other monomers, such as in the preparation of polyesters, and can be used in waxes, polishes and coatings.

Abstract: The present invention provides a cationic paint composition containing as resin component a polyol-modified amino group-containing epoxy resin obtained by reacting an epoxy resin with epoxy equivalent 180-2500 with a alkyl phenol and/or a carboxylic acid; a polyol obtained by adding a caprolactone to a compound containing a plurality of active hydrogen groups and an amino group-containing compound.

Abstract: Curable thermoset resin compositions are described which are useful for imparting water and/or solvent resistance to gel coated fiber-reinforced polymers. Those compositions contain at least 5 weight-percent of an at least partially end-capped unsaturated polyetherester resin, an unsaturated polyester resin in a specified amount having a specified range of unsaturation, about 10 to about 70 weight-percent of at least one vinyl monomer and a curing agent. Methods and intermediates for making those compositions, use of the curable thermoset resin compositions to make fiber-reinforced polymer composites and skin laminate intermediates for the same, and articles manufactured using the same are also described. These compositions, methods and uses improve the chemical and/or water resistance of resin compositions, particularly composite materials having a gel coat.

Abstract: The invention relates to a coating material containing a binding agent and a cross-linking agent as well as a thixotropic agent based on ureas and/or ureas derivatives, whereby the coating material additionally contains a wetting agent that improves the wettability of the thixtropic agent.

Abstract: A catalyst for curing epoxy resins comprises a tetraalkylphosphonium tetrafluoroborate represented by Formula (1): wherein R1, R2, R3, and R4 are each C1-C5 linear or branched alkyl and may be the same or different, and the halogen ion content in the tetraalkylphosphonium tetrafluoroborate is 20 ppm or less. An epoxy resin powder coating composition containing this catalyst exhibits a prolonged pot life and can be baked at decreased temperatures.

Abstract: A binder for a coating composition is formed using a principal resin polyol, in combination with a hyper-branched polyol as a reactive intermediate, and at least one crosslinker. The principal resin polyol is at least one of a polyester polyol, a polyether polyol, and a polyacrylate. Hyper-branched polyester polyols may be used as reactive diluents, which will cross-link with isocyanates, isocyanurates, epoxides, anhydrides or their corresponding polyacids and/or aminoplasts to form a binder having particular properties, to help control the rheology of a coating system. The hyperbranched polyol, the principal resin polyol, or both may, optionally, include a carbamate functional group in the structure thereof. Coating compositions may be made using the binders together with additional components.

Abstract: Thermosetting powder compositions comprising as binder a mixture of polyesters containing carboxyl groups and of a crosslinking agent having functional groups capable of reacting with the carboxyl groups.

Abstract: A powdered coating composition comprises a thermosetting resin which consists of two components. The first component includes an acid reactive material comprising a polyepoxide or &bgr;-hydroxyalkylamide compound. The second component is an acid terminated resin which reacts with the first component. A curing agent including a polycarboxylic acid having a functionality of at least 3 and a source of tertiary or quanternary nitrogen is present to react with an excess of the first component, thereby curing thermosetting resin.

Abstract: A resin composition for a powder coating, which comprises a non-crystalline polyester resin (A) having a carboxyl group, a crystalline polyester polyurethane resin (B) and a curing agent (C) made of a compound having a functional group reactable with the carboxyl group as an essential component, yields a powder coating which is highly suitable for practical use, the powder coating having superior storage stability (blocking resistance) and forming a coating film having superior smoothness under low temperature curing conditions.

Abstract: Reactive diluents are formed by reaction of a compound having at least two glycidyl ester groups and a compound having at least one hydroxyl and/or carboxyl group. The diluents are useful in coating compositions together with crosslinking agents and optional other vehicle components.

Abstract: This invention concerns low viscosity aldimine and ketimine reactive diluents having multi-imine functionality, which are useful in automotive refinish coating compositions, including a process for making them and the coatings that contain them.

Abstract: The present invention provides a powder coating composition. The powder coating composition includes a polyester resin having both hydroxyl and carboxyl groups, a curing agent for the carboxyl groups of the polyester resin, and an uretdione hardener which reacts with the hydroxyl groups.

Abstract: A powder coating composition that includes at least about 9% by weight, based on total vehicle weight, of a branched carboxylic acid-functional polyester having a number average molecular weight of from about 425 to about 1050 and at least one vehicle component reactive with carboxylic acid groups comprising an epoxy-functional material, produces a matte, textured coating.

Abstract: The invention provides methods for the preparation of polyester block copolymers, by reacting crystalline aromatic polyesters with lactones and/or epoxides. By using a slight excess of lactone in the reaction, and a subsequent solid-phase polycondensation reaction, the method generates high-molecular weight block copolymers of low crystallinity. Methods are also provided for generating polyester block copolymers by melt-mixing or kneading polyester block copolymers with epoxides in the solid phase.

Abstract: The present invention relates to a powder coating composition containing a low temperature curable epoxy resin, and more particularly to a powder coating composition containing a low temperature curable epoxy resin, which can be readily cured at a low temperature, thereby capable of being applied to coating objects that are noneconomical in terms of workability at an elevated temperature, or are thermally sensitive. The present invention provides a powder coating composition comprising 100 parts by weight of a low temperature curable epoxy resin; 30 to 500 parts by weight of a bisphenol-A curing agent or a polyester curing agent; 0.1 to 20 parts by weight of a defoaming agent; and 0.1 to 20 parts by weight of a leveling agent.

Abstract: A composition comprising a superabsorbent polymer and a hydroxy-functionalized polyether.

Abstract: The use of polymers which are obtainable by polymerization of a) at least one vinyl ester of aliphatic C1-C24-carboxylic acids in the presence of b) polyethers of the general formula I,  in which the variables have, independently of one another, the meanings mentioned in the description, as coating agent, binder and/or film-forming excipient in pharmaceutical presentations.

Abstract: The present invention has for its object to provide an ester elastomer having a high block of the hard and soft segment components, high flexibility, and good mechanical properties at high temperature, particularly high temperature creep resistance and a process for producing said ester elastomer.

Abstract: The combination of powder coatings usable in a coating method comprising mixing two or more powder coatings of which each color is different, wherein each of the powder coatings fuses with each other and is heat-cured, to thereby give a coating film having a homogenous hue. A powder coating composition comprising two or more powder coatings of which each color is different, wherein each of the powder coatings fuses with each other and is heat-cured, to thereby give a coating film having a homogenous hue. A coating method comprising the steps of (a) applying to a substrate two or more powder coatings, of which each color is different; (b) heating to fuse with each other each of the two or more powder coatings applied in step (a); and (c) curing the resulting fused product in step (b), to give a coating film having a homogeneous hue.

Abstract: A carboxyl group-containing polyester resin having suitable properties for use in a powder coating for wood and other temperature-sensitive substances is disclosed.

Abstract: The solvent-free two-component adhesive composition of the present invention comprises a polyol component (A) and a polyisocyanate component (B), and the viscosity of the mixture at 80° C. immediately after the point of time the components (A) and (B) are mixed together is 900 mPa·s or higher. The component (A) may be a polyol having a number average molecular weight of 800 or larger, or a mixture thereof, and the viscosity of the component (B) at 25° C. may be 20,000 mPa·s or higher. The composition may be used for laminating metal foil of 5 to 15 m thickness with a plastic film. By using the composition of the present invention, the occurrence of blocking due to the seepage of the adhesive from metal foil is prevented. The present invention includes a process of lamination using the same.

Abstract: The combination of powder coatings usable in a coating method comprising mixing two or more powder coatings of which each color is different, wherein each of the powder coatings fuses with each other and is heat-cured, to thereby give a coating film having a homogenous hue. A powder coating composition comprising two or more powder coatings of which each color is different, wherein each of the powder coatings fuses with each other and is heat-cured, to thereby give a coating film having a homogenous hue. A coating method comprising the steps of (a) applying to a substrate two or more powder coatings, of which each color is different; (b) heating to fuse with each other each of the two or more powder coatings applied in step (a); and (c) curing the resulting fused product in step (b), to give a coating film having a homogeneous hue.

Abstract: An ambient oxidative cure composition based on an acrylate functionalized alkyd resin is described. A method of preparing an ambient oxidative cure composition based on an acrylate functionalized alkyd resin is also described. Such ambient oxidative cure compositions may be used in, for example, fast drying, high solid paint or enamel compositions or formulations.

Abstract: In accordance with the foregoing, the present invention comprises a polyester epoxy resin powder coating exhibiting improved impact resistance and flexibility, without the loss of other key properties and where the 1,3-PDO modified polyester has lower melt viscosity than polyesters made with 100% neopentyl glycol, which is formed by reacting: a) A carboxyl functional polyester resin formed by reacting one or more aliphatic glycols and one or more polycarboxylic acids and/or anhydrides, wherein 5 to 90% (on a molar basis) of the aliphatic glycol is 1,3-propanediol, in the presence of an esterification catalyst and then endcapping the polyester with an endcapping agent to ensure that the polyester has carboxyl chain ends; and b) An epoxy resin crosslinking agent.

Abstract: A process for the manufacture of a flowable granulate by means of spray granulation, which comprises using as starting material a formulation in liquid form comprising (a) a substance or a mixture of substances that is in the form of a waxy or cohesive solid at room temperature, and (b) up to 20% by weight, based on the amount of component (a), of a substance having a specific surface >3 m2/g that is insoluble in component (a), yields granulates that have a narrow particle size distribution and a low dust content and that are stable to storage.

Abstract: Dispersants that adsorb to hydrophobic particle surfaces in aqueous media are described. The dispersants comprise dendritic polymers having at least one ionizable moiety and at least one peripheral hydrophobic long chain hydrocarbon moiety. Dispersions and inks wherein the dispersant operates as a solitary or co-dispersant are also described.

Abstract: A mixture of a self-curing epoxy resin having an equivalent weight of from about 100 to about 700, a melt viscosity of from about 200 to about 2000 centipoise at 150° C. and a low temperature curing agent is extruded as one component at a temperature below 220° F. and the extrudate is cooled and pulverized to form a low temperature curable coating powder. The powder cures at a temperature of from about 225 to about 300° F. and produces a coating having a smooth surface with either a low or high gloss. The powder is particulary useful for coating heat-sensitive substrates such as plastics, paper, cardboard and wood.

Abstract: A multi-component coating composition having a hard, glossy, and tack-free finish is described. The coating composition comprises a fatty acid modified glycidyl-containing component and a hydroxy-functional polymer. The coating composition can be used to originally finish or to refinish such articles as farm, industrial, and construction equipment, automobiles, and trucks, and to paint structures such as bridges, buildings, appliances, metal furniture, and the like.

Abstract: A method for producing a high molecular weight polyester having swell of 1-200 percent is described. In the method, a mixture consisting of (a) 100 parts by weight of a linear saturated polyester; (b) 0.3˜10 parts by weight of a mixture, as a coupling agent, which is composed of (1) 0-100 percent by weight of a bifunctional epoxide ingredient containing 2 epoxide groups per molecule and (2) 100-0 percent by weight of a polyfunctional epoxide ingredient containing 3 and more epoxide groups per molecule; and (c) 0.01˜5 parts by weight of metal salt of carboxylic acid as a catalyst for coupling reaction, is heated at a temperature higher than a melting point of said polyester resin.

Abstract: The present invention provides a cationic coating composition capable of forming a coating film which is excellent in a corrosion resistance and an adhesive property and an electrodepositably coating property toward a rust preventive steel plate (zinc-plated steel plate). The cationic coating composition described above comprises as a vehicle component, a polyol-modified, amino group-containing epoxy resin prepared by reacting an epoxy resin (A) having an epoxy equivalent of 180 to 2500 with a polyol compound (B) obtained by adding caprolactone to a compound having plural active hydrogen groups and an amino group-containing compound (C).

Abstract: Powder coating composition obtainable by homogeneous mixing of a separately produced particulate component A prepared from one or more epoxy resins having an epoxy equivalent weight of 250 to 2500, one or more curing components together with conventional lacquer auxiliary substances and additives and optionally pigments and/or fillers and a separately produced particulate component prepared from one or more resins differing from A having an acid value of 20 to 70 and/or an OH value of 10 to 100, one or more curing components together with conventional lacquer auxiliary substances and additives and optionally pigments and/or fillers, in a mixing ratio of component A to component B of 1:99 to 50:50, relative to weight.