Abstract: A solvent-based thermosetting coating composition comprising a hydroxy functional epoxy ester resin, and polycaprolactone diol, and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer adapted for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The resin is formed by reaction of diepoxide chain extended substantially simultaneously with diphenol and dicarboxylic acid and chain terminated with acid component comprising primary hydroxy functional acid.

Abstract: An electrically conductive composition containing a photosensitive epoxy polymer, a reactive plasticizer, and electrically conductive spherical particles wherein the outer surfaces are of a material selected from the group of platinum, palladium and gold. The compositions are used to provide a flexible electically conductive bond between a supporting substrate and a semiconductor.

Abstract: A hydroxy functional epoxy-polyester graft copolymer and solvent-based thermosetting coating composition comprising said copolymer and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer adapted for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional epoxy-polyester graft copolymer is the product of polymerization of certain lactone monomers in the presence of hydroxy functional epoxy ester resin precursor. The precursor resin is the reaction product of diepoxide with aliphatic diol and, subsequently, with acid component comprising primary hydroxy functional acid. The polymerization of the lactone monomers is carried out at a temperature between about 50.degree. C. and about 300.degree. C.

Abstract: Solvent-based thermosetting coating composition comprising a hydroxy functional epoxy ester resin, linear polycaprolactone diol and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer adapted for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional epoxy ester resin is the reaction product of diepoxide chain extended with aliphatic diol and chain terminated with acid component comprising primary hydroxy functional acid.

Abstract: A corrosion resistant coating for application to a metal substrate including powdered metal selected from the group consisting essentially of zinc, cadmium, stainless steel, aluminum and alloys and blends thereof; a linear epoxy or phenoxy resin having a molecular weight of less than 15,000 and essentially no highly reactive terminal epoxy group; a cross-linking urethane resin; an active organic solvent selected from the group consisting essentially of acetone, methyl ethyl ketone, methyl isobutyl ketone, dimethylformamide, and blends thereof; and an inactive organic solvent selected from the group consisting essentially of aromatic hydrocarbons, alcohols, and blends thereof.

Abstract: A hydroxy functional epoxy-polyester graft copolymer and solvent-based thermosetting coating composition comprising said copolymer and blocked polyisocyanate crosslinking agent. The coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as chip resistant automotive vehicle primer suitable for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, the composition may be formulated as a high solids composition sprayable with conventional spraying equipment. The hydroxy functional epoxy-polyester graft copolymer is the product of polymerization of lactone members in the presence of hydroxy functional epoxy ester resin precursor. The precursor resin is the reaction product of diepoxide chain extended with diphenol and chain terminated with acid component comprising primary hydroxy functional acid. The polymerization of the lactone monomers is carried out at a temperature between about 50.degree. C. and about 300.degree.

Abstract: Novel thermosetting, solvent-based, crosslinkable and chain-extendable coating compositions are provided. The coating compositions are suitable to be formulated as high solids coating compositions and comprise bis-diene oligomers, bis-dieneophile oligomers, crosslinking agent, organic solvent and, preferably, catalyst. The composition cures at elevated temperature to provide a coating on a substrate, such as sheet steel or the like, which is highly resistant to corrosion, humidity and solvents and provides corrosion protection for the substrate.

Abstract: The invention provides a water-reducible coating composition comprising an epoxy resin, an amino group-containing curing agent for the epoxy resin and a watersoluble organic compound which occurs in at least 2 tautomeric forms, in one of which a labile hydrogen atom is linked to a carbon atom and which compound contains at least one carbonyloxy group or sulfonyl group.

Abstract: A high solids coating composition which comprises 10-96 percent by weight resin solids of a low molecular weight epoxy oligomer, 2-35 percent by weight crosslinking glycoluril-formaldehyde resin and a primary sulfonic acid catalyst. The oligomer is condensed upon heating into a high molecular weight polymer film with simultaneous crosslinking with the crosslinking agent to provide the desired film properties.

Abstract: Disclosed is an epoxy rubber made by reacting about 5 to about 50% of an epoxy terminated acrylonitrilebutadiene copolymer with about 50 to about 95% of a solid epoxy resin. A coating powder is prepared with about 30 to about 70% of a solid epoxy resin, about 2 to about 25% of the epoxy rubber, about 5 to about 25% of an anhydride curing agent, about 5 to about 40% mica filler, and about 10 to about 50% glass fiber. Electrical apparatus, such as coils made of served wire, can be coated with the powder by heating the apparatus above the melting point of the powder and dipping it in the fluidized powder, followed by curing the melted powder on the apparatus.

Abstract: A coating composition containing 10-80% by weight of binder and 20-90% by weight of an organic solvent in which the binder is(1) a chlorosulfonated ethylene vinyl acetate polymer,(2) an epoxy resin,(3) a polyamine curing agent, and(4) a bicyclic amidine.The composition is used as a primer or topcoating for metal substrates and curings at ambient temperatures and provides a finish that has excellent adhesion to the substrate and is tough, durable, weatherable and when pigmented with electrically conductive pigments, can be used as a coating for electrodes used in electrochemical reactions such as grids used in lead acid storage batteries.

Abstract: Electrical conductors can be coated with a cured, thermosetting powder coating which, in its uncured state comprises a saturated, carboxyl group-containing polyester resin, an epoxy resin, an acrylic resin and, optionally, a cure catalyst, benzoin and/or a polyamide resin to provide insulative coatings with reduced air entrapment and improved dielectric strength.

Abstract: Compounds with a plurality of oxirane functional groups can be cured to a fixture in less than one minute with a catalyst composition of a trityl or tropylium salt of a non-nucleophillic anion and a suitable solvent. Typical catalyst salts include trityl tetrafluoroborate, trityl hexachloroantimonate and tropylium hexafluorophosphate. The catalyst composition may conveniently be extended with liquid polymeric vehicles and acidic fillers.

Abstract: A composition suitable for making circuitboards containing two different brominated epoxy polymeric components which are brominated diglycidyl ethers of bisphenol-A and epoxidized nonlinear novolak having at least about six terminal epoxy groups.

Abstract: Properties of room temperatures cured epoxy resin coatings are improved by hydrolyzing at least a portion of the epoxy groups.

Abstract: This invention relates to a composition comprising (1) a phenoxy resin and (2) at least two compositions selected from (a) phenolic resins, (b) melamine resins and (c) polyisocyanates; to the cured products thereof; and to an electrical conductor coated with said cured products.

Abstract: A product and the process for preparing the same to improve the moisture resistance properties of epoxidized TGMDA and DGEBA resin systems by chemically incorporating chromium (III) ions therein without impairing the mechanical strength properties of the resins.

Abstract: High solids coatings are prepared from (1) adducts of a polyepoxide and a polyamine and (2) a polyisocyanate blocked with a ketoxime or lactam.

Abstract: Disclosed is a curable resin composition comprising (a) at least one maleimide compound selected from the group consisting of N-(alkenylphenyl)maleimide derivatives, and dimers and polymers thereof and (b) one or more kinds of epoxy resins, each having at least one epoxy group in the unit molecule thereof. The resin composition may contain, besides the above two components, an amino compound as a further component (c). The resin composition may comprise a prepolymer of any two components among the three components (a), (b) and (c) and the remaining component. The resin compositions are useful as molding materials, for the fabrication of laminates, and as varnishes, including insulation varnishes and impregnating varnishes.

Abstract: A coating composition comprising (A) a polyester resin modified with a lactone having 6 to 8 ring carbon atoms (I) or a mixture of said lactone-modified polyester resin (I) and a non-modified polyester resin (II), the lactone content being from 5 to 40% by weight of the total polyester resin (in solid) (I) or (I+II), the number average molecular weight being 800.about.200 mg KOH/g and wherein the resinous acid value is 2.about.20 mg KOH/g, (B) a crosslinking agent, (C) a pigment and (D) optionally other resins. The composition is useful as an intercoat paint for automobile bodies.

Abstract: A method of improving weather resistant adhesion of curable composition on a glass surface, encompassing use of a primer composition utilizable on glass surfaces, comprising a film forming component and an ultraviolet light absorbing component, and capable of shielding light having wavelengths of 380 nm or less. The primer composition protects curable compositions coated on top of the primer from adverse weather effects, such as on adhesion properties of the curable composition onto a glass surface, the adhesion being maintained for substantially long periods of time.

Abstract: A resin product useful as an adhesive, composite or casting resin and the process for preparing same to improve the flexural strength mechanical property characteristics thereof. This improved flexural strength is attained with little or no change in density, thermal stability or moisture resistance by chemically incorporating 1.2 to 10.6% by weight Co(III) ions in an epoxidized resin system.

Abstract: A composition suitable for making circuit boards containing a bismaleimide triazine polymeric component, a brominated epoxy polymeric component, and a solvent is provided.

Abstract: A migration-free size for glass fibers which includes a silane coupler, lubricant and film former and is characterized by the absence of a carrier, either aqueous or organic. To provide required shelf-life, a volatile agent such as acetone is added in limited amount to block coupler-film former reaction pending use of the size.

Abstract: This invention provides novel resin systems and high solids, solvent-based chain-extendable, self-crosslinking coating compositions comprising same. The resin system comprises novel diblocked diisocyanate diurea oligomers of number average molecular weight about 300 to 5000. The resin system further comprises a polyepoxide, preferably a diepoxide, of molecular weight about 100 to 1000 used generally with said oligomer in weight ratio of about 1:1 to about 1:10, respectively. The resin components provide chain-extension polymerization during cure at elevated temperature, in situ, on the surface of a substrate. The resin system is also self-crosslinking. That is, no additional crosslinking component is required to cure the composition. The cured coatings of the invention provide greatly improved physical properties, in particular, greatly improved corrosion resistance.

Abstract: Single package, thermosetting epoxy resin-based coating compositions are provided which contain a polyepoxide and a curing agent system therefor which comprises an aromatic urea. At composition curing times and temperatures, the aromatic urea reacts with a portion of the polyepoxide to thereby form in situ a primary or secondary amine which can then function as a coreactive curing agent to complete the cure of the epoxy resin coating.

Abstract: A self-curable coating composition for cathode-precipitating electrodeposition is disclosed which essentially comprises a water-dispersible resin having a carbon-carbon double bond and a tertiary amino group and an epoxy resin having a teritary amino group and an unsaturated group of the formula ##STR1## The two resins are neutralized by an acid to render the composition water-soluble or water-dispersible.

Abstract: This invention provides polymer forming resin systems and high solids solvent based chain-extendable, crosslinkable coating compositions comprising same. The invention comprises a polyepoxide, preferably a diepoxide, of molecular weight between about 100 and about 1000 used generally in amounts from about 10% to about 50% by weight of total resin, and novel diblocked diisocyanate diurea oligomers of molecular weight between about 300 and about 5000. The resin components provide chain-extension polymerization during cure at elevated temperature, in situ, on the surface of a substrate. The resin system is self-crosslinking. That is, no additional crosslinking component is required. The cured coatings of the invention provide greatly improved physical properties, in particular greatly improved corrosion resistance.

Abstract: The invention herein disclosed provides a method for preparing improved fluoroelastomer film compositions including the steps of dissolving a fluoroelastomer gum selected from the group consisting of copolymers of vinylidene fluoride and hexafluoropropylene, and terpolymers of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene in a solvent, adding an amine-derived curative to the gum solution and curing the fluoroelastomer gum with the curative in the absence of metallic oxides. A method is also provided for adhering fluoroelastomer film compositions, devoid of metallic oxides, to substrates which includes the steps of dissolving the fluoroelastomer gum in a solvent, adding an amine-derived curative to the gum solution, coating the substrate with the fluoroelastomer gum-curative solution and evaporating the solvent leaving a film firmly adhered to the substrate.

Abstract: An aqueous emulsion type sizing agent for carbon fibers is disclosed. The sizing agent contains a compound represented by the following general formula (I): ##STR1## wherein A represents (C.sub.2 H.sub.4 O).sub.l or (C.sub.2 H.sub.4 O).sub.n (C.sub.3 H.sub.6 O).sub.m [l is 18 to 70; n is 18 to 70; and m is 2 to 50 (1.ltoreq.n/m.ltoreq.35)];a compound represented by the following general formula (II): ##STR2## wherein R represents C.sub.q H.sub.2q+1 or ##STR3## (q is 10 to 18; and p is 15 to 70); and an epoxy resin, a process for preparation of the agent, and the method for using it are also disclosed. The sizing agent has excellent emulsion stability and heat stability, and it can impart excellent bundling properties to carbon fibers.

Abstract: A process for producing a colloidal solution of a curable resin which comprises:blending (a) 5 to 90% by weight of a polyfunctional maleimide component and (b) 95 to 10% by weight of at least one thermosetting resin,heating them to form a composition, andblending the resulting composition with at least one low boiling point solvent having a boiling point of more than room temperature and less than 150.degree. C., in which the thermosetting resin is rich soluble, but the maleimide component is poor soluble, thereby forming a colloidal solution of a curable resin is disclosed. The colloidal solution is used as a coating, as an impregnating agent for a coil, or for preparing prepreg.

Abstract: Disclosed is a curable resin composition comprising (a) at least one maleimide compound selected from the group consisting of N-(alkenylphenyl)maleimide derivatives, and dimers and polymers thereof and (b) one or more kinds of epoxy resins, each having at least one epoxy group in the unit molecule thereof. The resin composition may contain, besides the above two components, an amino compound as a further component (c). The resin composition may comprise a prepolymer of any two components among the three components (a), (b) and (c) and the remaining component. The resin compositions are useful as molding materials, for the fabrication of laminates, and as varnishes, including insulation varnishes and impregnating varnishes.

Abstract: This invention provides novel resin systems and high solids, solvent-based chain-extendable, self-crosslinking coating compositions comprising same. The resin system comprises novel diblocked diisocyanate diurea oligomers of number average molecular weight about 300 to 5000. The resin system further comprises a polyepoxide, preferably a diepoxide, of molecular weight about 100 to 1000 used generally with said oligomer in weight ratio of about 1:1 to about 1:10, respectively. The resin components provide chain-extension polymerization during cure at elevated temperature, in situ, on the surface of a substrate. The resin system is also self-crosslinking. That is, no additional crosslinking component is required to cure the composition. The cured coatings of the invention provide greatly improved physical properties, in particular, greatly improved corrosion resistance.

Abstract: An emulsion is prepared which comprises about 8 to about 20 percent of a solvent, about 0.5 to 5 percent of an epoxy resin dissolved in the solvent to form a discontinuous phase, about 75 to about 90 percent of a precipitant as the continuous phase, and an emulsifier in an amount sufficient to react stoichiometrically with the epoxy and hydroxyl groups on the epoxy resin up to about 900% in excess of stoichiometric. A conductive workpiece is placed in the emulsion about 1/2 to about 2 inches from an electrode which is also immersed in the emulsion. A direct electric current potential is applied between the workpiece and the electrode with the workpiece as the anode. About 50 to about 400 volts and about 2 to about 50 milliamperes are used until a coating of the desired thickness has been deposited on the workpiece. The solvent and precipitant are preferably ketones such as cyclohexanone, and methylethylketone or isobutylketone, respectively.

Abstract: The invention provides a novel means for solving the problem of poor adhesion between the surface of a substrate of a metal or a plastic resin, e.g. polycarbonate resin, and a cured coating film of an organopolysiloxane formed thereon to impart good surface properties, e.g. hardness and weathering resistance, to the substrate surface by use of an adhesion improver as a primer which comprises a copolymer of an organosilicon compound having a hydrolyzable group and an ethylenic unsaturation in the molecule, glycidyl methacrylate and an organic monomer, e.g. methyl methacrylate and vinyl acetate, a reaction product of an aminoalkyl-containing organosilane compound and an acid anhydride and, optionally, an ultra-violet light absorber in a limited proportion.

Abstract: This invention presents to the art novel heat curable adhesive systems and laminates bonded by the adhesive system. The heat curable adhesive system comprises a heat curable adhesive composition which is a dispersion of a specific polyester, a polyvinylchloride which is or includes a carboxylated polyvinyl chloride and a polyepoxide and a curing agent for the adhesive composition. Curing of the adhesive composition can be effected at relatively low activation temperatures which provides distinct advantages in preparing laminates particularly those involving thin sheets of polymeric material bonded to metal sheet materials.

Abstract: A nonvolatile amine, which is at least partially neutralized with a mixture of hydrochloric acid and either hydrobromic or hydriodic acid, dissolved in a solvent, is mixed with a volatile ketone and a polyglycidyl ether or ester to result in a thermosettable resin composition having extended pot life in bulk and a fast cure rate in thin sections.

Abstract: A thermosetting acrylic powder coating composition contains an acrylic copolymer of a monoethylenically unsaturated monomer having at least one epoxy group and at least one monoethylenically unsaturated monomer which is free of epoxy groups, a carboxy-terminated primary crosslinking agent, a supplementary crosslinking agent having at least one functional group which can react with either hydroxyl groups or carboxylic acid groups, and at least one ultraviolet light stabilizer or ultraviolet light screener capable of preventing degradation of the coating by ultraviolet light. An acrylic copolymer of methyl methacrylate, n-butyl methacrylate, and glycidyl methacrylate is favored. Preferably, the composition contains a combination of ultraviolet light stabilizer and ultraviolet light screener, is nonpigmented, and provides a clear, glossy, and durable film useful as the clear coat of a clear coat/color coat automobile finish.

Abstract: This invention presents to the art novel heat curable adhesive systems and laminates bonded by the adhesive system. The heat curable adhesive system comprises a heat curable adhesive composition which is a dispersion of a specific polyester, a polyvinylchloride which is or includes a carboxylated polyvinyl chloride and a polyepoxide and a curing agent for the adhesive composition. Curing of the adhesive composition can be effected at relatively low activation temperatures which provides distinct advantages in preparing laminates particularly those involving thin sheets of polymeric material bonded to metal sheet materials.

Abstract: The present invention provides room temperature curable epoxy coating compositions prepared by reacting (1) a saturated epoxy resin, (2) a curing amount of a polyamide and (3) a cellulose acetate butyrate in the presence of an organic solvent.