Abstract: Aqueous curable polymer dispersion comprising a polyester and/or polyurethane and a polymeric product having a Tg from 25.degree.-100.degree. C. obtainable by free-radical polymerisation of a mixture of (a) an olefinic monomer free from epoxy and epoxy reactive groups, (b) a monomer and/or oligomer having at least two epoxy groups and (c) a group reactive towards epoxy groups.

Abstract: An aqueous coating composition and a method of coating a metal substrate are provided. The composition and method are particularly suitable for use in coating can bodies and can ends or for can side seam coatings. The coating composition includes a solvent component and a film forming component. The solvent component includes water and an organic solvent. The film forming component includes a curing agent and the product of the reaction of a carboxy addition polymer and an epoxy resin in the presence of a tertiary amine catalyst.

Abstract: Film-forming reactive systems for the surface-to-surface bonding and/or coating of substrates, more particularly for heat-sealable coatings are provided. The system is based on an aqueous dispersion of at least two epoxy-curable resins (I) and an epoxy compound as the curing component (II). The epoxy-curable resins are a polyurethane polymer containing epoxy-reactive functional groups present as the curable resin (Ia) and an aqueous dispersion of an acrylate and/or methacrylate homopolymer or copolymer containing carboxyl and/or methylol groups present as an additional curable resin (Ib). Also provided is a method for the production of laminates which employs the reactive system to bond substrates.

Abstract: Vehicles for one-component aqueous emulsion/dispersion acrylic paints having improved washability and wash-fastness include (a) from 96% to 99.9% by weight, relative to the solids content thereof, of an aqueous dispersion of acrylic latex, and (b) from 0.1% to 4% by weight, also relative to the solids content thereof, of an aqueous emulsion of an aromatic epoxy resin which comprises a nonionic surface-active agent.

Abstract: Hybrid polymers of epoxy resins are provided by polymerizing ethylenically unsaturated monomer in the presence of epoxy resin using a combination of oil soluble and water soluble surfactants in separate organic and aqueous phases, respectively, made up prior to combining under polymerizing conditions. The organic phase contains the monomer and epoxy resin and oil soluble surfactant while the aqueous phase contains water and the water soluble surfactant. Initiator systems can be included in the organic phase or added independently to the reaction mixture. The resulting hybrid epoxy polymer exhibits excellent properties when applied as a protective film or adhesive, and aqueous dispersions of the polymer can be compounded with polyfunctional amine curatives and still remain stable for long periods of time, making a convenient one-pack system that can be cured on application, drying and heating at a relatively low temperature.

Abstract: The invention is a two-component film-forming reactive system for heat-sealable materials. The composition contains at least one resin which is curable with an epoxide and an epoxide compound as a curing agent. The resin which is curable with the epoxide is a mixture of a carboxyl or hydroxyl terminated polyurethane with an acrylate or methacrylate polymer or copolymer having hydroxyl or carboxyl groups.

Abstract: A water based coating composition which has excellent shelf stability and can be cured by ordinary baking in the absence of a sulfonic acid-containing acid catalyst and which gives a coating having excellent adhesion and excellent water resistance. The water based coating composition can be obtained by dissolving or dispersing50 to 80% by weight, as a solid content, of a water-soluble polyester resin prepared by polycondensing a carboxylic acid component containing 10 to 60 mol % of a polycarboxylic acid having 3 to 4 carboxyl groups per molecule and 40 to 90 mol % of a dicarboxylic acid and 1.1 to 2.0 mol, per mole of the carboxylic acid component, of a glycol component, to obtain a polyester resin having a free carboxyl group, and dissolving the polyester resin in water in the presence of a base,5 to 20% by weight, as a solid content, of a water based bisphenol type epoxy resin, and15 to 45% by weight, as a solid content of an alkyl-etherified amino resin, in an aqueous medium.

Abstract: A composition useful as an aqueous anionic electrodepositable coating comprises a film-former of from about 67-95% by weight of a phosphated polyepoxide resin, from about 5-33% by weight of a carboxyl group-containing vinyl addition resin, and up to about 40% by weight of the film-former of a crosslinking agent.

Abstract: A thermosetting coating composition containingA) one or more binders convertible into liquid or dissolved form at least at the curing temperature and containing acidic groups, basic groups or ionic groups of similar charge,B) one or more binders convertible into liquid or dissolved form at least at the curing temperature and containing basic groups where (A) contains acidic groups, acidic groups where (A) contains basic groups or ionic groups of like charge opposite to the charge of the ionic groups of (A), binder (B) being noninterdiffusible under storage and application conditions, but interdiffusible with binder (A) under hardening conditions, andC) optionally standard solvents, pigments and/or typical paint auxiliaries and/or additives which do not lead to any interdiffusion of the binders A) and B) under storage and application conditions,and a process for the production of coatings by application of the coating composition and subsequent thermal curing.

Abstract: Water-dilutable coating binder combinations which can be deposited cathodically, and based on epoxy resin-amine adducts, acrylate copolymers and crosslinking components are described. The binders are particularly suitable for formulation of water-dilutable primers and one-coat paints when deposited cathodically are described. In 3 to 30% by weight, based on the solids, of a basic epoxy resin-amine adduct (A) which is free from epoxide groups, 70 to 97% by weight of a monomer mixture (B), which consists of esters of (meth)acrylic acid which contain secondary or tertiary amino groups, of monoesters of (meth)acrylic acid with diols, of (meth)acrylic acid alkyl esters and if appropriate of aromatic vinyl monomers, is polymerized. Components (A) and (B) comprise at least 5% by weight, preferably 10 to 20% by weight, of identical aliphatic radicals having 7 to 18 carbon atoms. The baked films based on these products have a high degree of gloss and an excellent UV, washing agent, and corrosion resistance.

Abstract: A water based coating composition which gives a coating being capable of withstanding heat treatment of food for sterilization, particularly, retorting treatment, having sufficiently high hardness against scratching in transferring and transportation, having processability sufficient to withstand the formation of cans having a variety of forms, and having little organic solvent content. The above water based coating composition contains, as resin components, 20 to 80 parts by weight of a water based acrylic resin, 20 to 50 parts by weight of a water based amino resin and 5 to 30 parts by weight of an amine-modified epoxy resin.

Abstract: Unsaturated polyester resins of the type already having reactive liquid polymers reacted into the backbone of the resins, are cured in the presence of a reactive liquid polymer additive admixed with the prereacted unsaturated polyester resin. Heating of this system during cure causes the reactive liquid polymer additive to miscibilize with the unsaturated polyester resin. The unsaturated polyester resin modified in the manner described above shows a significant enhancement in toughness as measured by fracture energy over unmodified counterparts or counterparts modified by known methods of adduction or admixing alone.

Abstract: An aqueous coating composition that is particularly suited for coating metal containers used for packaging food and beverages. The coating comprises an aqueous dispersion of the reaction product of a 1,2-epoxy resin with a carboxyl functional addition polymer, an epoxy phosphate ester polymer, and an effective quantity of a curing agent which may be a phenoplast or an aminoplast resin.

Abstract: An aqueous crosslinkable resin composition suitable as surface coating material, under coating material, impregnation treating material or binder and having excellent properties such as solvent resistance, water resistance, thermal discoloration resistance, long pot life and no generation of formaldehyde, which comprises (A) an acrylic copolymer of a carboxyl group-containing monomer, an alkyl acrylate or methacrylate, and optionally a monomer having a basic nitrogen atom and/or other copolymerizable vinyl monomers, wherein at least 0.5 % by mole of carboxyl groups is neutralized with an imidazole compound, and (B) an epoxy resin, the equivalent ratio of the carboxyl group of (A) to the epoxy group of (B) being from 1/3 to 3/1.

Abstract: An additive for cationic electrodepositable coating compositions is disclosed which improves hiding ability, stability, rheology and oil spot resistance. The additive is present in amounts of between 0.5 to 40 weight percent and is prepared by polymerizing in aqueous medium, under free radically initiated conditions, an aqueous dispersion of a polymerizable, ethylenically unsaturated monomer composition in the presence of a cationic polymeric surface active substance. The coating composition additionally has between 60 to 99.5 weight percent of a cationic salt group containing film forming polymer. Also disclosed is a method for coating which includes electrodepositing the above composition on an electrically conductive cathode.

Abstract: A thermosetting coating composition comprising as essential components:(a) a hydroxyl group-containing base resin,(b) an alicyclic polyepoxide crosslinking agent, and(c) a catalyst selected from the group consisting of a quaternary ammonium hydroxide and a metal chelate.

Abstract: A process for non-aqueous copolymerization of ethylenically unsaturated monomers including carboxyl functional monomers in the presence of epoxy resin by in-situ copolymerization is improved by utilizing a catalyst (initiator) combination of less than 2% peroxide and between 0.05% and 0.1% phosphonium catalyst. The carboxyl functional polymer can be aminated and dispersed into water to produce a protective coating composition useful for interior surfaces of beer and beverage cans.

Abstract: The invention relates to an aqueous coating agent, obtained from an epoxy resin, ethylenically unsaturated monomers, some of which contain carboxyl groups, a peroxide initiator in a proportion of at least 2% by weight, relative to the total weight of the monomers, a crosslinking agent, a neutralizing agent, organic solvents, and, if appropriate, further conventional additives, such as plasticizers, stabilizers, wetting agents, dispersion auxiliaries, catalysts and pigments.

Abstract: An o/w water paint having excellent dispersibility and stability is prepared according to a phase conversion process comprising adding ammonia or an amine and water to a solution of an epoxy resin, a hardener resin, and an acrylic resin in an organic solvent or to a molten mixture of these resins to neutralize the acrylic resin. In view of adhesion of a coat to metal and workability, branched alkylamines or heterocyclic amines are suitable as the neutralizing amines. In applying this paint, steam optionally containing fine water droplets is preferably applied to a wet coat prior to drying. Furthermore, a process for the continuous production of an emulsion type water paint comprising a carboxyl group-containing acrylic resin component, an epoxy resin component and a curing agent resin component for the epoxy resin is disclosed.

Abstract: Ultravioletsetting resin composition contains fragmentary quartz glass powder in the ratio of 50 to 200 parts to 100 parts of the ultravioletsetting resin. The surface hardness of the ultravioletsetting resin of the present invention is increased in a short time by the application of ultraviolet rays.

Abstract: Aqueous cathodic electrodeposition lacquer coating compositions are provided which comprise (A) certain water soluble synthetic resin binders containing amino groups; (B) crosslinking reagents which react with resin (A), and (C) certain soluble or insoluble transesterification catalysts for the crosslinking reagents. Methods of forming baked finish coatings which are cathodically deposited on electrically conductive surfaces using the lacquer coatings are also disclosed.

Abstract: An O/W water paint having excellent dispersibility and stability is prepared according to a phase conversion process comprising adding ammonia or an amine and water to a solution of an epoxy resin, a hardener resin, and an acrylic resin in an organic solvent or to a molten mixture of these resins to neutralize the acrylic resin. In view of adhesion of a coat to metal and workability, branched alkylamines or heterocyclic amines are suitable as the neutralizing amine. In applying this paint, steam optionally containing fine water droplets is preferably applied to a wet coat prior to drying.

Abstract: Aqueous two-component systems based on epoxide resins and diamines, containing water in an amount of 1 to 20 wt. % which are prepared by mixing: (a) as a curing agent, a (cyclo)aliphatic di-primary-diamine having 2 to 12 carbon atoms, in homogeneous solution with 2-40 wt. % water, (b) as an epoxide resin component, (i) a polyglycide compound of a bisphenol, an aliphatic polyol, a polyether polyol, a dicarboxylic acid, or a mixture of these polyglycide compounds and (ii) a polyacrylate of a polyol or a polyether polyol, have a low water content, are cold-curable, yield elastic coatings with good solvent resistance, and may be applied in thick layers and with a high filler content. The systems may be used for coating inorganic and organic materials.

Abstract: A copolymer microparticle is presented which is derived from at least about 5 weight percent of free carboxylic acid group-containing vinyl monomers, monomers which have a poly(alkylene oxide) appended thereto, oleophilic monomers and other nonionic hydrophilic monomers. Microgels containing these copolymers having a median water swollen diameter of about 0.01 to about 1.0 micrometer are disclosed. Pharmaceutical and diagnostic compositions are disclosed comprising a therapeutic or diagnostic agent and microgels comprising a copolymer derived from at least about 5 weight percent of non-esterified carboxylic acid group-containing vinyl monomers, oleophilic monomers and other nonionic hydrophilic monomers, with the proviso that when the median water swollen diameter of the microgels is 0.1 micrometer or greater, at least 5 weight percent of the monomers have a poly(alkylene oxide) appended thereto.

Abstract: A process for anchoring a fastener in a base comprising introducing a bore hole in the base a destructible multiple chamber cartridge containing a reactive set for producing a synthetic resin body. The reactive set contains 3-60 parts by weight of a vinyl ester epoxy resin, 28-45 parts by weight of styrene and/or methyl methacrylate, 63-3 parts by weight of an unsaturated polyester resin which is not an ester of a polyepoxide with an ethylenically unsaturated monocarboxylic acid, 10-0.1 parts by weight of an epoxy resin which is not an ester of a polyepoxide with an ethylenically unsaturated monocarboxylic acid, 0.4-1.2 parts by weight of an organic peroxide hardener component, 40-55 parts by weight filler, accelerators, and polymerization inhibitors. The organic peroxide and resin components are in separate chambers. The cartridge is driven into the borehole so that the cartridge is destroyed and the organic peroxide is mixed with the resin components whereby the resin is cured.

Abstract: A multilayer coating for the interior surface of a can, said coating being composed of(A) a primer coat layer having a dry film thickness of not more than 1 micrometer formed by using a .

Abstract: The present invention provides a micro gel particle having a cationic charge, prepared by a radical polymerization. The micro gel particle is obtained in the form of an aqueous dispersion. The micro gel particle dispersion is prepared by dispersing or emulsifying in an aqueous medium (A) a cationic aqueous resin and (B) a resin having at least two polymerizable vinyl groups and a number average molecular weight of 400 to 20,000, followed by radical-polymerizing.

Abstract: An o/w water paint having excellent dispersibility and stability is prepared according to a phase conversion process comprising adding ammonia or an amine and water to a solution of an epoxy resin, a hardener resin, and an acrylic resin in an organic solvent or to a molten mixture of these resins to neutralize the acrylic resin. In view of adhesion of a coat to metal and workability, branched alkylamines or heterocyclic amines are suitable as the neutralizing amines. In applying this paint, steam optionally containing fine water droplets is preferably applied to a wet coat prior to drying. Furthermore, a process for the continuous production of an emulsion type water paint comprising a carboxyl group-containing acrylic resin component, an epoxy resin component and a curing agent resin component for the epoxy resin is disclosed.

Abstract: Stable aqueous acrylic resin dispersions are made from a dispersion in water of the reaction product of a carboxylic acid containing acrylic resin and a diglycidyl ether of a polyoxyalkylene glycol.

Abstract: A process is provided for the production of a highly water-absorbing resin comprising a polymer obtained by polymerizing a monomer composition mainly composed of an ethylenically unsaturated monocarboxylic acid and/or an alkali metal salt thereof. The process comprises incorporating an oil-soluble polyfunctional epoxy compound having a solubility in 100 g of water at 20.degree. C. of not more than 0.3 g into the polymer by adding 0.0005-3 parts by weight of the oil-soluble polyfunctional epoxy compound to 100 parts by weight of the polymer or the monomer composition to be subjected to polymerization and thereby causing crosslinking.

Abstract: Phenoxy terminated epoxy resins are grafted by carbon-carbon graft with ethylenic monomers, including alkylol acrylamide monomer, by in-situ polymerization to produce grafted epoxy-acrylic copolymers useful as binders in protective coatings. The cured paint films exhibit superior resistance to pine oil and limonene derivatives.

Abstract: A self-curing aqueous resin dispersion obtained by neutralizing a resin having at least one alicyclic epoxy group and at least two carboxyl groups in the molecule, with a base and dispersing the neutralized resin in water.

Abstract: Flexible laminates are prepared using a room temperature curable, water-borne laminating adhesive. The adhesive consists essentially of a copolymer emulsion of an alkyl acrylate, alkyl methacrylate, styrene or vinyl ester, or mixtures thereof, and an ethylenically unsaturated carboxylic acid, and optional selected comonomers, combined with an epoxy resin emulsion and a polyfunctional amine. The flexible laminates are characterized by rapid room temperature curing, high bond strength, superior heat resistance and chemical and water resistance.

Abstract: An air-drying aqueous coating composition for electrodeposition comprising[A] a water-solubilized product or a water-dispersed product obtained by reacting (A-1) an epoxy resin and (A-2) a (semi)drying oil fatty acid-modified vinyl polymer having an acid value of 10 to 200 in such proportions that the solids weight ratio of the component (A-1) to the component (A-2) is from 90/10 to 5/95, and[B] an amphoteric organic solvent having affinity for component [A].

Abstract: A method for the production of a highly water absorptive resin comprises the steps of neutralizing acrylic acid with alkali metal hydroxide to form an alkali metal acrylate; mixing the alkali metal acrylate, methacrylic acid, a polymerization initiator, and a first crosslinking agent; suspending and dispersing the mixture in an aqueous medium to for an initial mixture; polymerizing the initial mixture to produce a polymerized intermediate, and separating the moisture from the polymerized intermediate by azeotropic distillation to reduce the water content to 15-35% by weight; adding a second crosslinking agent, said second crosslinking agent having two epoxy radicals; and mixing "Syloid" of silicate, to form a highly water absorptive resin.

Abstract: A coating composition is used for coating or overlaying Portland cement concrete or metal. The composition includes a synthetic polymer latex, an amine-functional epoxy curing agent, an epoxy-functional or amine-functional silane, a liquid epoxy resin, and a filler having a fine particle size. The coating composition has superior crack resistance and low cost in comparison with epoxy/amine-type polymer concrete, and excellent strength development, chemical resistance, and rapid cure in thick films in comparison with latex-based cementitious compositions. The coating composition can be mixed from a pair of storage-stable components; a dry mix including the fine particle size filler and the epoxy resin, and optionally larger size aggregate, and a wet mix including the polymer latex, the silane, and the amine curing agent.

Abstract: Thermal adhesive type coating composition including (A) an emulsion of a thermoplastic synthetic resin having a glass transition temperature of not lower than 60.degree. C., (B) an emulsion of an epoxy resin, (C) an amine base curing agent for the epoxy resin which is capable of reacting with the component (B) when heated, and (D) a film forming assistant agent having solubility in water at 20.degree. C. of not higher than 20 g/100 cc and having solubility therein of water at 20.degree. C. of not lower than 0.5 g/100 cc, the weight ratio of the solid resin contents of the component (A) to those of the component (B) being 60/40 to 98/2, is disclosed. The composition protects a substrate coated with the composition as the coating at ambient temperature and, when heated under pressure application, causes the substrates coated with the composition to be bonded to each other with a strong adhesive strength.

Abstract: This invention relates to aqueous epoxy resin-containing compositions and to such compositions which are particularly useful for depositing coatings on metallic substrates in order to protect substrates against corrosion. The aqueous compositions generally comprise (A) an organic resin component consisting essentially of at least one water-dispersible or emulsifiable epoxy resin or a mixture of resins containing more than 50% by weight of at least one water-dispersible or emulsifiable epoxy resin, (B) chromium trioxide, and (C) water, said composition further characterized as being substantially free of strontium chromate. The aqueous compositions may also contain other ingredients including zinc and/or ferro alloys.These aqueous compositions are useful as pretreatment coatings on metal surfaces, and in particular, on steel and on galvanized and aluminized metal substrates.

Abstract: The invention relates to an aqueous coating agent, obtained from an epoxy resin, ethylenically unsaturated monomers, some of which contain carboxyl groups, a peroxide initiator in a proportion of at least 2% by weight, relative to the total weight of the monomers, a crosslinking agent, a neutralizing agent, organic solvents, and, if appropriate, further conventional additives, such as plasticizers, stabilizers, wetting agents, dispersion auxiliaries, catalysts and pigments.

Abstract: This invention relates to an electrodeposition process which comprises electrodepositing onto a conducting substrate a coating composition comprising a self-crosslinking polymeric resin which has an average of at least two pendent hydroxy functional groups and an average of at least two pendent ester groups of the general formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen, alkyl, substituted alkyl or aryl groups; n is from about 1 to about 5; X is nitrogen, sulfur or phosphorus; and when X is nitrogen or phosphorus, R.sup.3 is hydrogen, lower alkyl, or an aryl group; R.sup.4 is lower alkyl or an aryl group; and when X is sulfur, R.sup.4 is nothing and R.sup.3 is either hydrogen, lower alkyl or aryl.

Abstract: Cathodic electrocoating compositions and processes are improved by the addition of at least 0.10% hydrogen peroxide by weight based on polymer to electrocoating composition.

Abstract: The present invention provides a polyvinyl chloride plastisol composition characterized by containing a specified epoxy resin, a blocked isocyanate and, if necessary, a latent curing agent for an epoxy resin as tackifiers. This plastisol composition is excellent in storage stability and can strongly adhere to various metals and various undercoate of metals (such as electro-deposit) by baking even at a relatively low temperature to give a coating which is free from blowing and exhibits excellent adhesion after the immersion in hot water or the heating. Therefore, the composition is useful as a body sealer or undercoat for an automotive body.

Abstract: An electrodeposition coating composition containing polymer microparticles of 0.01 to 20 microns size is disclosed. The polymer microparticles have a predetermined range of softening point, solubility parameter, refractive index or crosslinking density.

Abstract: This invention relates to coating compositions which comprise a polymer having at least two hydroxy functional groups and a crosslinking agent having an average of at least two pendent ester groups of the general formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen, alkyl, substituted alkyl or aryl groups; n is from about 1 to about 5; X is nitrogen, sulfur or phosphorus; and when X is either nitrogen or phosphorus, R.sup.3 is hydrogen, lower alkyl, or an aryl group; R.sup.4 is lower alkyl or an aryl group; and when X is sulfur, R.sup.4 is nothing and R.sup.3 is either hydrogen, lower alkyl or aryl.

Abstract: Thermosetting aqueous anionic electrocoating composition are disclosed which comprise a carboxyl-functional anionic polymer dispersed in water with the aid of water miscible organic solvent and a volatile base, and from about 1% to about 5%, based on the weight of the polymer content of the composition, of an oxirane-free epoxy phosphate, this epoxy phosphate being produced by slowly and incrementally adding a resinous polyepoxide to a solvent solution containing from 0.05 to 0.9 mole of orthophosphoric acid per oxirane equivalent in the polyepoxide together with sufficient water to hydrolyze all of the oxirane functionality which is not consumed by the orthophosphoric acid. These epoxy phosphates improve the corrosion resistance of electrodeposited cured coatings without objectionably wrinkling their surface.

Abstract: Process characterized by dissolving a dye in a solution of organic solvent and an epoxy type polymer, which requires a curing agent in order to create a resultant nanosphere that will crosslink through the action of the curing agent, and not simply as the result of a solvent removal which defined each nanosphere. The dye may be in concentration range of 1% to 50% by weight of solvent, and the organic solvent must have limited solubility in water, typically less than 20%. An initial intermolecular mixing step dissolves dye and epoxy resin within a solvent so as to make a homogeneous solvent/polymer/dye intermediate mixture, that then is dispersed as nanoparticles in water, and thereafter crosslinked. Surfactants may be used to assist in dispersing the dye/polymer/solvent solution into the water continuous phase.

Abstract: An aqueous coating resin composition, the improvement wherein a microgel composed of a resin reaction product having a three-dimensional network structure, which is obtained by the esterification reaction of (1) 40 to 90 parts by weight of an aromatic epoxy resin with (2) 10 to 60 parts by weight of a carboxyl group-containing vinyl polymer comprising (a) a carboxyl group-containing vinyl monomer, (b) an aromatic vinyl monomer and (c) at least one monomer selected from the group consisting of an alkyl ester, a hydroxyalkyl ester and an N-hydroxyalkylamide of an alpha,beta-ethylenically unsaturated carboxylic acid, is dispersed into an aqueous medium; and a process for production thereof.

Abstract: A durable epoxy resin paint composition is disclosed, comprising from 0.5 to 10% of a vinylidene chloride-based resin emulsion and from 99.5 to 90% of an epoxy resin paint. A durable epoxy resin paint composition is also disclosed, comprising from 5 to 40% of a metal foil piece having a specific surface area of 1000 cm.sup.2 /g or more, from and from 95 to 50% of an epoxy resin paint. The durable epoxy resin paint composition of the invention not only endures salt water, gasoline, ketones, crude oil, strong acids, strong alkalis, or other chemicals for a long period of time but also is suitable for the use in foods.

Abstract: Water-dilutable paint binders for the formulation of ecological stoving paints containing only minor quantities of organic solvents are described. The binders are partial condensation products of (A) a polycondensation, polymerization, or polyaddition resin as the film-forming polycarboxy compound (PC-component), and (B) an epoxy resin amine adduct (PH-component) carrying hydroxy groups and being water-insoluble under normal processing conditions. The products afford improved corrosion resistance and are particularly suited for the formulation of primers, intercoats (primer surfacers), and single coat paints.

Abstract: An electrodeposition coating composition comprising (a) a water-dispersible, electrically depositable binder resin and (b) water-insoluble, internally crosslinked polymer microparticles having a particle size from 0.01 to 2 microns, said polymer microparticles bearing on their surfaces physically adhered or covalently bound thereto an amphoionic group of the formula: ##STR1## wherein R represents an unsubstituted or substituted C.sub.1 -C.sub.6 alkylene or phenylene, A is --COOH or --SO.sub.3 H.