Abstract: A mixture of superabsorbents having differing surface postcrosslinking, more particularly a mixture of differingly surface-postcrosslinked sieve cuts of a base polymer, exhibits improved absorption and retention over a unitarily surface-postcrosslinked superabsorbent.

Abstract: The invention provides heat-curable thixotropic mixtures containing carbamate and/or allophanate groups, including at least one oligomer and/or polymer containing at least one of carbamate and allophanate groups, and at least one thixotropic agent that is a urea derivative preparable by reacting at least one amine and/or water with at least one isocyanate in the presence of at least one amino resin. The invention further provides processes for preparing the mixtures and coating materials, adhesives and sealing compounds prepared from the mixtures.

Abstract: Moldings of fluoro rubbers produced by crosslinking a tetrafluoroethylene/propylene copolymer or a tetrafluoroethylene/propylene/vinylidene fluoride copolymer, which have metal contents of 1.5% by mass or below in terms of metal elements and are suitable for use applications necessitating clean environment, for example, manufacturing or carrier equipment for semiconductors, manufacturing equipment, carriers, or storage containers for food, or medical supplies.

Abstract: A thixotropic amino formaldehyde resin with a urea-functional compound, obtainable by adding a polyisocyanate-functional compound to a monoamine-functional compound or a monoisocyanate-functional compound to a polyamine-functional compound in the presence of the amino formaldehyde resin and reacting the amine and isocyanate-functional compounds to form the urea-functional compound entangled to the resin. The thixotropic amino formaldehyde resin can be used in the formulation of coating or adhesive compositions.

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

Abstract: A method for manufacturing a gravure transfer-coated continuous metal plate, wound in the form of a coil, comprising: coating, over the metal plate, a primer coating material; curing the primer coating material to form a lower coating layer; thermally transferring a desired pattern from a gravure transfer sheet onto the lower coating layer, thereby forming a transfer coating; coating, over the transfer coating, an upper coating material of thermosetting fluorine resin, thermosetting polyester resin, or UV-thermosetting polyurethane-acryl-based resin; and curing the upper coating material to form an upper coating layer. The primer coating material consists essentially of: 20-40% polyester resin having a number average molecular weight of 5,000-20,000 and a glass transition temperature of 10-50° C., 4-15% melamine resin, 1-10% urethane resin, 0.3-3% isocyanate, 15-35% pigment 30-50% hydrocarbon/ester-based mixed solvent, and 1.5-3% additives.

Abstract: A crosslinking agent comprising one or more carbamate groups or groups convertible to carbamate and two or more polyfunctional amino moieties having the formula wherein L is selected from the group consisting of alkyl or aryl, cycloalkyl and alkylaryl having a carbon chain length between 1 and 6 carbon atoms and N is a polyfunctional amino moiety. L may also have additional bridging groups such as esters, ethers, ureas, or urethanes groups. Also included is a method of making the crosslinker, a coating composition containing the crosslinker and a method for coating a substrate with the composition.

Abstract: Clearcoat compositions using a phenolic ester compound are described. The phenolic ester compound is selected from the group consisting of a phenolic ester alcohol, a phenolic urethane, a phenolic blocked isocyanate, and mixtures thereof.

Abstract: A non-yellowing one-package polyurethane coating composition containing an oxime-blocked polyisocyanate, an isocyanate-reactive material, and an imino-functional amino resin is provided. The coating composition is applied onto an acid-cured base coat and cured. The clear coat produced in this manner has good yellowness resistance and intercoat adhesion.Articles such as multi-layered coated substrates are prepared using the coating method of this invention. The coated substrates typically contain an acid-cured first layer and an adjacent layer derived from a curable composition containing an oxime-blocked polyisocyanate, an isocyanate-reactive material, and an imino-functional amino resin.

Abstract: The present invention is directed to a polymeric vehicle, the formulated coating composition and a coating binder made from the polymeric vehicle and a method for making the polymeric vehicle where the polymeric vehicle includes a phenolic urethane reactive diluent. The phenolic urethane reactive diluent may be made from a phenolic ester alcohol having at least one aliphatic hydroxyl group.

Abstract: A curable coating composition is described comprising two components that are reactive with one another upon curing to form urethane linkages. The urethane-forming components are an active hydrogen groups-containing component and a polyisocyanate, or a carbamate groups-containing component and a carbamate group-reactive component. The composition further comprises a third component that includes one or more epoxide groups. Coatings prepared with this coating composition can be cured and coated with additional coating(s), providing good intercoat adhesion to the subsequent coating.

Abstract: The stabilised binder is a mixture of two copolymers and at least one curing agent. The one copolymer contains fluorine or silicon and a UV absorber in copolymerised form. The other copolymer is an acrylic resin. Suitable curing agents are melamine resins or polyisocyanates.

Abstract: A coating composition is disclosed, comprising from 50 to 80 parts by weight of an acrylic resin having a number-average molecular weight of from 1,800 to 8,000, a hydroxyl value of from 60 to 120, and an acid value of from 1 to 25 and from 50 to 20 parts by weight of a hardener consisting of blocked aliphatic polyfunctional isocyanates and/or blocked alicyclic polyfunctional isocyanates and an alkyl-etherified melamine resin, the proportion of said melamine resin to said isocyanates being from 50/50 to 95/5 by weight. And a coated article comprising the above coating composition and a method to form the coated film and the coated article are disclosed.

Abstract: Toner fusing members with improved properties are formed with an outer layer comprising a melamine-cured block polyurethane coating composition. Such a (A-B).sub.n' block polyurethane is formed by polycondensation of a diisocyanate, an organopolysiloxane diol and a C.sub.2-20 diol.

Abstract: The invention relates to water-thinnable baking paints, the use thereof as filler material and intermediate stone chip resistant coat as well as a process for painting motor vehicle bodies.The water-thinnable baking paints comprise as binders a combination of(I) 20 to 70% by weight of a water-thinnable polyurethane resin with an acid value of 15 to 35,(II) 20 to 70% by weight of an epoxy resin-modified water-thinnable polyester which can be prepared by reacting a polyester (A) with a molecular weight (number average) below 2000, an acid value of 35-240 and a hydroxyl value of 56-320, with 0.3 to 1.

Abstract: The stabilized binder is a mixture of two copolymers and at least one curing agent. The one copolymer contains fluorine or silicon and a UV absorber in copolymierized form. The other copolymer is an acrylic resin. Suitalbe curing agents are melamine resins or polyisocyanates.

Abstract: The clear coating composition includes (a) an acrylic resin having a number-average molecular weight of 2500-10000 and a hydroxyl number of 70-120, and containing 20-40 parts by weight of styrene and/or its derivative, based on 100 parts by weight of acrylic resin-constituting monomers (solid basis); (b) a polyester resin having a number-average molecular weight of 350-1500 and a hydroxyl number of 150-300; (c) a mixture of (i) an alkyl ether-substituted melamine resin containing 5 or more alkyl ether groups per each triazine ring; and (ii) a melamine resin containing 1.1-3 imino groups per each triazine ring, a weight ratio of the component (i) to the component (ii) being 8/2-5/5; (d) an acid catalyst blocked with an amine having a boiling point of 150.degree.-280.degree. C.; and (e) a blocked isocyanate, weight ratios of the components being (a)/(b)=100/0-60/40; and (c)/(e)=100/0-33/67.

Abstract: High solids, solvent-based resin composition comprises novel chain-extendable, crosslinkable urethane modified polyhydroxy oligomers, crosslinking agent and, preferably, catalyst(s). The composition cures at elevated temperature to provide a coating on a substrate, such as steel, which is highly resistant to corrosion, humidity and solvents and provides corrosion protection for the substrate. The novel oligomers can be the reaction product of a polyol with a half-blocked diisocyanate, wherein said polyol comprises three or more hydroxy, and the half-blocked diisocyanate comprises the reaction product of an organic diisocyanate with approximately one molar equivalent of a monofunctional blocking agent.

Abstract: Thermosetting polyurethane compositions comprising a polymer having a molecular weight of from 500 to 10,000 and containing from about 0.3 to about 15 percent by weight of one or more functional groups selected from the group consisting of --OH, --COOH, --CONH.sub.2 and ##STR1## and a mixture of monomeric and oligomeric polyfunctional substituted urethane compounds, which may be derived by reaction of a polyol and isocyanic acid, followed by methylolation and alkylation. Such compositions may be cured at elevated temperature to produce solvent-resistant coatings.

Abstract: Novel, low viscosity, high solids paint compositions have been created which provide durable, high gloss surface finishes when they are applied to and cured over suitable substrates. The paints are based on urethane binder resins formed by initially reacting a hindered piperidinol ultraviolet stabilizer with a stoichiometric excess of aliphatic polyisocyanate. This reaction product is in turn reacted with a stoichiometric excess of polyether polyols. The paint compositions are cured by crosslinking the urethane binder resins at the unreacted functional hydroxyl groups of the polyol constituents by means of acid catalyzed, melamine formaldehyde crosslinking agents. Cure can generally be fully accomplished in a short time at temperatures below about 250.degree. F. The cured paint has piperidine groups chemically incorporated within its molecular structure to effectively inhibit the degradation of the urethane linkages and the loss of gloss by ultraviolet radiation.

Abstract: Polyester silicate resinous products are produced by mixing an organic epoxide compound, hydrated silica, Lewis acid and a polycarboxylic acid and/or polycarboxylic acid anhydride, then heating the mixture to from 150.degree. C. to 250.degree. C. for 30 minutes to 4 hours. The polyester is silicate resinous products may be used as a coating agent, as a molding powder and as an adhesive.

Abstract: Reactive diluents are derived from the reaction of a glycidyl ester and a hydroxyl and/or carboxyl functional compound. The diluents are useful in coating compositions together with crosslinking agents and, optionally, polyols.

Abstract: The invention is concerned with novel autoxidizable compositions comprising an unsaturated acid ester of a glycol monodicyclopentenyl ether, a condensation or vinyl addition polymer, a siccative and a volatile stabilizer, which compositions are uniquely adapted to be formulated with high solids and practical viscosity ranges for coating and/or impregnating purposes.

Abstract: Poly (polyisocyanate-polyol-alkali metal silicate) solid or foamed products are produced by mixing a dry granular alkali metal silicate with a polyol while heating to form an emulsion which is then reacted with an organic polyisocyanate.