Abstract: The instant invention is an epoxy resin curing agent based upon an epoxidized polyol containing aromatic and polyalkylene ether moities in which substantially all of the epoxide groups are reacted with a polyamine wherein each primary amine in the resulting reaction product is further reacted with a monoepoxide or a monocarboxylic acid. The resulting epoxy resin curing agent may be used in a water based system for curing epoxide resins. The curing agent is rendered water soluble or water dispersible by salting with a conventional volatile monocarboxylic acid such as acetic, formic or propionic acid.

Abstract: A process for the production of novel polymers by the interpolymerization of a bicyclic amide acetal, a dicarboxylic acid anhydride and a polyepoxide at a temperature in the range of from 80.degree. C. to about 200.degree. C. and at a pressure in the range of from about ambient to about 50 atmospheres is described.

Abstract: The present invention relates to a water-dispersible self-hardenable resin composition, and particularly to a self-hardenable resin composition, which has a low-temperature hardenability and is adapted for the cationic electrodeposition painting wherein a material to be painted is used as a cathode.The present invention provides a self-hardenable resin composition consisting essentially of a Michael type addition reaction product consisting of 65-95% by weight (in solid base) of a polyamine resin having amino groups and/or imino groups and 35-5% by weight of an ethylenically unsaturated compound having an amine-imido group.

Abstract: Improved electrodepositable resin compositions comprising the reaction product of an epoxide, and, the reaction product of a ketone and an alkanolamine. The introduction of a primary monoamine into the epoxide molecule can be simultaneously done, optionally, with chain extension. The resin compositions can also be used as grind resins.

Abstract: Relatively high molecular weight epoxy resins cured with conventional curing agents are disclosed wherein the relatively high molecular weight epoxy resin is prepared in the presence of the curing agents. The resultant cured epoxy resin has an improvement in Tg or toughness and the mixture prior to reaction and curing is much easier to apply as a coating or in the preparation of castings, laminates and the like as compared to applications of mixtures of relatively high molecular weight epoxy resins and the curing agents.

Abstract: Spherical particles of cured epoxy resin having an average size not larger than 50 .mu.m can be produced by adding a water-soluble amine curing agent to an emulsion of uncured epoxy resin.It is possible to prepare spherical particles incorporating a UV absorber or inorganic particles, to dye these particles with an acid dye, and to subject them to electroless plating.In addition, after-treatment of the cured particles enhances their heat resistance and destroys the epoxide groups left unreacted inside each particle.These particles may be used as an ingredient of cosmetic and coating compositions, as a toner of electrostatic copiers, and for other applications.

Abstract: The reaction product of cyanoguanidine, formaldehyde and an amine terminated polyether provides a liquid curing agent for epoxy resins. Epoxy resins are useful in applications such as decorative coatings, encapsulations, adhesives, laminates, potting compounds, etc.

Abstract: The reaction product of hydantoins, formaldehyde and an amine terminated polyether provides a liquid curing agent for epoxy resins. Epoxy resins are useful in applications such as decorative coatings, encapsulations, adhesives, laminates, potting compounds, etc.

Abstract: A two component adhesive formulation comprising a mixture of A. an epoxy component comprising an epoxy resin and an additive selected from the group consisting of (a) a polyisocyanate, (b) a carboxylic anhydride and (c) a compound having unsaturated carbon-carbon bonds capable of undergoing Michael addition reaction with amines, and B. a hardener component for curing component A comprising a mixture of amido amines, primary and secondary amines having tertiary amine groups or ether groups in their backbone, and bisphenol-A is described.

Abstract: Novel epoxy-polyester graft copolymer and novel, solvent-based thermosetting coating composition comprising said copolymer and blocked polyisocyanate crosslinking agent. 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, composition may be formulated as a high solids composition sprayable with conventional spraying equipment. Epoxy-polyester graft copolymer is prepared by polymerization of lactone monomers in presence of hydroxy functional epoxy ester resin precursor. Precursor resin is formed by reaction of diepoxide, previously chain extended with dicarboxylic acid, with hydroxy functional secondary amine in chain terminating reaction.

Abstract: A crosslinkable composition of matter is provided, which comprises first and second chain extended diepoxide resins, one or both of which are prepared using an excess of diepoxide reactant and modified by reaction with hydroxy functional secondary amine. The first resin, diene functional aminoepoxy resin, and the second resin, blocked dieneophile functional aminoepoxy resin, are co-reactive at elevated cure temperature. The diene functional aminoepoxy resin comprises the reaction product of diepoxide with amine functional diene chain extending reactant and, optionally, monofunctional end-capping reactant such as monohydroxy functional diene. The blocked dieneophile functional aminoepoxy resin comprises the reaction product of diepoxide with amine functional blocked dieneophile chain extending reactant and, optionally, monofunctional end-capping reactant such as monohydroxy functional blocked dieneophile. The composition may further comprise crosslinking agent reactive with hydroxy functionality of the resins.

Abstract: Cationic synthetic resin binders free of epoxy groups for the formulation of electrodeposition paints are described. The binders are the reaction product of an epoxy resin carrying at least two epoxy groups and having an epoxy equivalent of 190 to 1000, with from 0.1 to 1.0 amino groups per available epoxy group of a secondary amine carrying carboxylic acid amide groups. Upon being crosslinked on stoving with a suitable hardening component, the binders have improved water dilutability, permitting a reduction of the degree of neutralization necessary for electrodeposition application and improved intercoat adhesion to addition coats. These improved characteristics are significant with respect to an increase of current yield and in adhering additional coatings of a paint system.

Abstract: A self-crosslinkable resin and composition of matter comprising same is provided, which resin comprises certain diene functional blocked dieneophile functional aminoepoxy resin, which resin is self-crosslinkable at elevated cure temperature. The diene functional blocked dieneophile functional aminoepoxy resin comprises the reaction product of diepoxide with amine functional diene chain extending reactant, mono-secondary amine functional blocked dieneophile and, optionally, monofunctional end-capping reactant such as mono-secondary amine functional diene and mono-secondary amine functional blocked dienophile. The composition may further comprise crosslinking agent reactive with hydroxy functionality of the resin. The crosslinkable composition of matter is useful in coating and other applications, especially solvent-based primer coating compositions and cathodic electrocoating compositions.

Abstract: A transparent moisture-resistant mercaptan composition is made utilizing an amino-titanate catalyst. The composition can be utilized in association with high heat-resistant transparent compositions containing a boroxine compound.

Abstract: An absorbent, flexible, resilient, cellular polymer is provided which comprises the reaction product of at least one epoxy resin and amine terminated poly(alkylene oxide).

Abstract: Novel epoxy-polyester graft copolymer and novel, solvent-based thermosetting coating composition comprising said copolymer and blocked polyisocyanate crosslinking agent. Coating composition may be formulated as hot sprayable, high solids coating composition suitable for use as a chip resistant automotive vehicle primer adapted for use on body panel areas subject to chipping by stones, gravel and other road debris. Alternatively, composition may be formulated as a high solids composition sprayable with conventional spraying equipment. Epoxy-polyester monomers in presence of hydroxy functional epoxy ester resin precursor. Precursor resin is formed by reaction of diepoxide, chain extended with diphenol and dicarboxylic acid, with hydroxy functional secondary amine in chain terminating reaction.

Abstract: Process for producing cationic epoxy resins carrying oxazolidine groups suitable as paint binders, and particularly paint binders for the formulation of cathodically depositable paints, wherein the epoxy resin is reacted with a hydroxy functional oxazolidine compound or with an oxazolidine compound carrying in the ring the structure ##STR1## in the presence of a monocarboxy compound. The presence of the monocarboxy compound permits the direct reaction or linkage of the epoxy resin with the oxazolidine compound without gelation; and, additionally, the monocarboxy compound favorably influences the film-forming characteristics of the binders.

Abstract: The invention relates to a self-crosslinking heat-curable binder, in particular for electropaints, which is based on an organic synthetic resin which contains primary and/or secondary and, if desired, also tertiary amino groups and esterified carboxyl groups and is water-dilutable due to partial or complete neutralization with acids. The esterified carboxyl groups are activated in the alcohol component by a substituent which induces a negative inductive effect.

Abstract: A latent curing agent for epoxy resin, characterized in that the latent curing agent is an adduct obtained by reacting (a) a polyfunctional epoxy compound, (b) a compound having at least one OH, NH.sub.2, NH or SH group together with a tertiary amino group in the molecule and (c) a carboxylic acid anhydride is a good curing agent for epoxy resins. The present curing agent is useful in formulating storable, one-package, heat-curable epoxy resin-based compositions.

Abstract: An addition product obtained by reacting (a) a polyfunctional epoxy compound and (b) a compound having at least one functional group of OH group, SH group, COOH group and CONHNH.sub.2 group together with a tertiary amino group in the molecule, and an addition product obtained (a), (b) and (c) an organic compound having two or more active hydrogen atoms in the molecule (excluding a compound having an epoxy group or tertiary amino group) are good curing agents for epxoy resin. The curing agents are useful in formulating novel storable one-package, heat-curable epoxy resin-based compositions.

Abstract: A resinous hardener system comprising the reaction product of diethyl toluene diamine and an epoxide having a functionality of at least two, the hardener being capable of incorporation into a variety of epoxy and urethane resins.

Abstract: A method of making an epoxy prepolymer curing agent is disclosed. The method comprises the steps of reacting a mixture of piperidine and an epoxy resin so as to form an epoxy prepolymer adduct. The adduct is mixed with 2-ethyl-4-methylimidazole thereby forming the curing agent composition.

Abstract: Epoxy resins of increased flexibility and other improved properties are produced by curing a vicinal epoxy resin by combining the resin with a cured amount of a monoamide prepared by the condensation of fatty saturated or unsaturated monocarboxylic acids and polyoxyalkylene polyamines with an amine functionality of about 3 or greater. The cured epoxy resins are useful, for example, as thermal shock resistant encapsulations and adhesives.

Abstract: There are described novel curable mixtures which contain(a) an epoxide resin having on average more than one epoxy group in the molecule, and(b) as curing agent for the epoxide resin, a compound of the formula I ##STR1## wherein m and n independently of one another are an integer from 1 to 5, andm and n together are at most 6, andR is a radical of the valency m derived from an alcohol having at most 6 hydroxyl groups, which radical can be interrupted by oxygen atoms and has a molecular weight not exceeding 200.These mixtures are suitable for example as casting resins, impregnating resins or injection-moulding compounds.

Abstract: A novel diepoxide curing agent is revealed. The curing agent comprises a mixture of an imidazole compound and a selected polyoxyalkylenepolyamine.This curative produces an epoxy resin of low viscosity with a prolonged pot life. They find particular usefulness in filament winding and pultrusion processes where they are used to fabricate articles of considerable strength.

Abstract: Curable synthetic resin mixtures, useful as surface coatings, are prepared by the reaction of solid or liquid epoxy resins with curing agents in turn prepared by the reaction of epichlorohydrin with a cycloaliphatic diprimary diamine in a molor ratio between 1:>1 to 1:2.

Abstract: An epoxy resin composition is disclosed. The composition comprises a polyepoxide and a curing amount of a bis(hydrogen maleate) derivative of a polyoxypropylenediamine. This composition when cured produces unexpectedly superior encapsulations which are more flexible and less brittle than those of the prior art.

Abstract: An absorbent cellular polymeric material is provided which exhibits enhanced water retentivity and may also exhibit enhanced compressibility. Such a material is provided by foaming the reaction product of a poly(aminoether) and an epoxy resin and quaternizing the resulting reaction product with, for example, an acid. The foam is particularly usable in products for absorbing body fluids.

Abstract: Epoxy coatings containing polyoxyalkyleneamines provide improved adhesion when applied to minimally cleaned, corroded metal surfaces.

Abstract: This invention relates to polyols that can be used to prepare rigid foams, such polyols being prepared by reacting a propoxylation product with melamine and a lower alkylene carbonate. The propoxylation product (which can contain some ethylene oxide) is prepared by propoxylating a Mannich condensate prepared by reacting phenol or a C.sub.1 -C.sub.12 alkylphenol with formaldehyde and diethanolamine in the mole ratios of from 1:1:1 to about 1:3:3.

Abstract: The invention relates to a self-crosslinking heatcurable binder, in particular for electropaints, which is based on an organic synthetic resin which contains primary and/or secondary and, if desired, also tertiary amino groups and esterified carboxyl groups and is water-dilutable due to partial or complete neutralization with acids. The esterified carboxyl groups are activated in the alcohol component by a substituent which induces a negative inductive effect.

Abstract: A non-yellowing decorative epoxy resin aggregate binder formulation is disclosed. The formulation comprises 100 parts by weight polyepoxide, 24.8 parts by weight of a specified polyoxypropylene diamine, 26 parts by weight nonylphenol and 4 parts by weight m-xylylenediamine.Nonylphenol gives the formulation strength with flexibility and resistance to weathering with a high gloss appearance. M-xylylenediamine prevents yellowing of the clear coating.The formulation is useful as a clear coating to bind aggregate (colored pebbles or shell) to a cement surface to form a decorative coating. The formulation is distinguished by its clear, non-yellowing appearance.

Abstract: A non-yellowing decorative epoxy resin aggregate binder formulation is disclosed. The formulation comprises 100 parts by weight polyepoxide, 25 parts by weight of a specified polyoxypropylene diamine, 26 parts by weight nonylphenol and 4 parts by weight N-aminoethylpiperazine and 1 to 3 parts by weight of a specified substituted benzotriazole UV absorber dissolved in xylene.Nonylphenol gives the formulation strength with flexibility and resistance to weathering with a high gloss appearance. The substituted benzotriazole UV absorber prevents yellowing of the clear coating.The formulation is useful as a clear coating to bind aggregate (colored pebbles) to a cement surface to form a decorative coating. The formulation is distinguished by its clear, non-yellowing appearance.

Abstract: A curable composition comprising an epoxy resin or a monoepoxide and a curing agent comprising a metal salt complex of an adduct of an imidazole and a monofunctional epoxy compound.

Abstract: The adhesion properties of amine cured epoxy resins are unexpectedly enhanced by addition of a certain combination of high and low molecular weight polyoxyalkylene polyamines. The adhesively superior epoxy resin composition comprises a vicinal polyepoxide, a curing amount of a combination of about 85 wt. % or more of certain polyoxyalkylene polyamines having a molecular weight of less than about 450 and 15 wt. % or less of a polyoxyalkylene polyamine of greater than two primary amine functionality and a molecular weight of about 5,000 and above.

Abstract: Adducts of oxazolidine compounds, such as the reaction product of monoethanol amine with cyclohexanone, are adducted with an organic polyepoxide and the adduct is reacted with an acid to protonate at least 50% of the amine groups in the adduct. These protonated adducts can be dispersed in water to form dispersions which cure with various curing agents. When all the epoxy groups are consumed by reaction with the oxazolidine, aqueous electrocoating baths can be formulated which may contain aminoplast resin or phenoplast curing agents.

Abstract: The reaction product of (i) an aromatic amide having the amine group of the amide attached to an aromatic ring, and (ii) a mono- or di-epoxide, has been found to be a good fortifier of epoxy resins. Epoxy resins have been found to attain increased strength and modulus (yet not brittle) by compounding:(a) a resin-forming polyepoxide,(b) an amine curing agent for (a), and(c) the above fortifier; and heat curing the mixture. Strengths as high as 130-150 MPa and modulus values to as high as 5000 MPa have been achieved yet with a ductile mode of fracture.

Abstract: This invention is directed to polymeric compounds which contain the polyalkylpiperidine radical and at least two primary hydroxyl groups. These compounds are useful as light stabilizers for plastics and coatings. More particularly, the polymeric stabilizers is formed by chain extending polyalkylpiperidine with an excess of epoxy resin to form a diepoxide functional polymer which is then capped with hydroxy functional monomer.

Abstract: The invention relates to a selfcrosslinking heat-hardenable binder, in particular for electropaints, which is based on an organic synthetic resin which contains hydroxyl groups and esterified carboxyl groups in the form of carbalkoxymethyl ester groups and is water-dilutable by partial or complete acid-neutralization of amino groups present in the resin.

Abstract: Novel solvent-based thermosetting composition comprising (a) hydroxy functional epoxy ester resin of number average molecular weight (Mn) between about 1,000 and about 5,000, being formed by reaction of diepoxide, which has been chain extended with diphenol and dicarboxylic acid, with hydroxy functional secondary amine in chain terminating reaction, in approximately 1:1 equivalent ratio: and (b) polyfunctional, hydroxyreactive crosslinking agent, for example, aminoplast crosslinking agent and blocked polyisocyanate crosslinking agent comprising isocyanate groups blocked by reaction with an active hydrogen bearing blocking agent. The coating composition may be formulated as a primer sprayable with conventional spraying equipment.

Abstract: Bis(aminoethyl) ether is reacted with an alkylene oxideto form a 2-[2-aminoethoxy-2-ethylamino]alkanol which is useful as an epoxy curative.The curative is cured with a polyepoxide to form an epoxy resin useful for such applications as decorative coatings, encapsulations, adhesives, laminates, potting compounds, etc.

Abstract: Curable compositions of matter comprising an epoxy resin and a curing agent selected from the group consisting of polyvalent metal salts of a phosphorodithioic acid, the acid being derived from the reaction of a phosphorus sulfide with a hydroxyl containing aromatic compound, and products derived from the reaction of the polyvalent metal salt with a mono- or polyamine.

Abstract: Disclosed are curing agents for epoxy resins consisting of modified polyoxyalkylenepolyamines obtained by the addition reaction of an alkyleneimine to a polyoxyalkylenepolyamine, preferably a polyoxypropylenepolyamine or polyoxyethylenepolyalkylamine, and ethyleneimine or propyleneimine in acid medium.

Abstract: This invention relates to novel N-cyano amide compositions and adducts thereof of the formula ##STR1## wherein R is a simple organic moiety or a polymeric adduct with the valence of n and n is 2 or 3. The composition, per se, can be used as a curing agent for epoxy resins to form a thermoset material on heating.

Abstract: Paint binders and process of producing same water-soluble upon total or partial neutralization with inorganic or organic acids comprising the reaction product of an epoxy compound having at least two 1,2-epoxy groups with secondary oxazolidine amines and saturated or unsaturated carboxylic acids; said binders having a theoretical amine value of at least 35 mg KOH/g. The paint binders are particularly useful in paints formulated for cathodic deposition. Paints formulated with said binders exhibit good applicational characteristics including throwing power, and the cured films have good mechanical and chemical resistance.

Abstract: Disclosed ar novel polyamine compounds having the general formula ##STR1## wherein R, R.sup.1, R.sup.2 and R.sup.3 are each independently selected from hydrogen and alkyl groups which may be substituted, the preparation of such compounds and their use as curing agents for epoxy resins.

Abstract: A water based epoxy resin composition is disclosed. The epoxy resin is useful as an adhesive.The composition comprises a modified diepoxide with a latent curative in aqueous medium. The diepoxide is modified by partial reaction with a polyoxyalkyleneamine containing variable amounts of ethylene oxide.

Abstract: Ungelled resins, aqueous dispersions of cationic resins, coating compositions, and electrodeposition using the resinous coating compositions are disclosed. The resins are formed from reacting polyepoxides with polyoxyalkylenepolyamines. The aqueous dispersions are prepared by at least partially neutralizing the resins to provide cationic groups and dispersing the cationic resins in aqueous medium. When added to cationic electrodepositable coating compositions, such as high throwpower compositions, the ungelled cationic resins provide better appearing, more flexible and water-resistant electrodeposited coatings.

Abstract: A water based epoxy resin composition is disclosed. The epoxy resin is useful in protective coatings. The composition comprises a modified diglycidyl ether of a bisphenol A type epoxy resin with a polyamidopolyamine in aqueous medium. The diglycidyl ether of bisphenol A is modified by partial reaction with a polyoxyalkyleneamine. The polyamidopolyamine is prepared from dimer fatty acids and a polyamine.

Abstract: This invention provides a coating composition comprising at least one 1,2 epoxy resin, a modified imidazole catalyst, and a polyfunctional phenol or polyfunctional acid or dicyandiamide.