Abstract: The invention relates to a process for manufacturing fiber-reinforced boards for the electrical industry by the use of epoxy resins and latent curing agents based on imidazole/acrylic acid reaction products based on the general formula ##STR1## wherein R, R.sup.1 and R.sup.2 are, independently of one another, H or a short-chain alkyl group having from 1 to 3 carbon atoms, R.sup.3 is a group of the formula--O--(CH.sub.2)m--R.sub.4 (II)wherein m is an integer between 2 and 6, R.sup.4 is H, --OH or --O--, and n is equal to the valence of R.sup.3.

Abstract: The invention relates to new compounds of the general formulas ##STR1## where R is a divalent, optionally branched aliphatic, cyclic or alicyclic hydrocarbon group having from 2 to 10 carbon atoms; R.sup.1 and R.sup.2 are, independently of one another, hydrogen, or aliphatic or aromatic hydrocarbon groups; R.sup.3 is --COOH, --CN, --COOC.sub.2 H.sub.4 --OH, --CONH--NH.sub.2 or --COOR.sup.4 ; R.sup.4 is an aliphatic hydrocarbon group having from 1 to 4 carbon atoms; and n is 2 or 3.

Abstract: The invention relates to new compounds of the general formula ##STR1## where R is a divalent, optionally branched aliphatic, cyclic or alicyclic hydrocarbon group having from 2 to 10 carbon atoms; R.sup.1 and R.sup.2 are, independently of one another, hydrogen, or aliphatic or aromatic hydrocarbon groups; R.sup.3 is --COOH, --CN, --COOC.sub.2 H.sub.4 --OH, --CONH--NH.sub.2 or --COOR.sup.4 ; R.sup.4 is an aliphatic hydrocarbon group having from 1 to 4 carbon atoms; and n is 2 or 3.

Abstract: The invention relates to new imidazolyl derivatives, their use as curing agents in epoxy-resin compositions, and curable epoxy-resin compositions containing them and composed of an epoxy resin and compounds of the general formula ##STR1## where R is the group of the alcohol component used to produce the glycidyl ethers, R.sup.1 and R.sup.2 are, independently of each other, hydrogen, --CH.sub.3 or --C.sub.2 H.sub.5, n is 2 or 3, R.sup.3 is COOH, --CH, --COHN--N.sub.H2, --COOCH.sub.2 --CH.sub.2 --OH or COOR.sup.4, R.sup.4 being an aliphatic hydrocarbon group having from 1 to 4 carbon atoms, and m is equal to the valence of R.

Abstract: The invention relates to a process for the manufacture of pipe from composite materials for industrial and drinking water, produced by the filament-winding method from epoxy resins and 1,7-bis-[1-(2'-aminoethyl)-1,3-diaza-2-cyclopenten-2-yl]-heptane and/or 1,8-bis-[1-(2'-aminoethyl)-1,3-diaza-2-cyclopenten-2-yl]octane as curing agents and commonly used reinforcing materials.

Abstract: The invention relates to a process for the fabrication of fiber-reinforced wound structures, and particularly pipe fittings, by impregnation of heat-resistant fibers with binders based on epoxy resins and 3-[1-(2'-aminoethyl)-1,3-diaza-2-cyclopenten-2-yl]-heptane and/or [1-(2'-aminoethyl)-1,3-diaza-2-cyclopenten-2-yl]-2,4,4-trimethyl-1-pentane as curing agent and commonly used fillers, pigments, dyes, accelerators, curing agents, wetting and flow-control agents, and reactive diluents.

Abstract: This invention is directed to a compound of the formula ##STR1## wherein the substituents are defined hereinbelow. R is an aliphatic group, cycloaliphatic group, aryl group or araliphatic group andR.sup.1 and R.sup.2 are each independently hydrogen, lower alkyl or aryl,R.sup.3 is a chemical bond or ##STR2## Z and Z.sup.1 are independently O or NH, R.sup.5 is R,R.sup.4 is lower aliphatic, arylene, aryl lower alkylene or cycloaliphatic,wherein the aliphatic group contains up to 10 carbon atoms in the principal chain and up to a total of 15 carbon atoms;the cycloaliphatic group contains up to 10 ring carbon atoms and up to a total of 15 carbon atoms; andthe aryl group is an aromatic group containing from 6 to 10 ring carbon atoms and up to a total of 15 carbon atoms.These compounds are used as accelerators in epoxy resin compositions, comprising (a) an epoxy resin, (b) dicyandiamide and optionally (c) solvents, fillers, reinforcement materials or inert materials, pigments or aids, for the production of moldings.

Abstract: The invention relates to substituted 3-(N-imidazolyl)propionic hydrazides, to their use as curing agents in epoxy-resin compositions, and to curable epoxy-resin compositions containing them and comprised of (a) an epoxy resin, and (b) optionally of dicyandiamide, and (c) optionally of conventionally used nitrogen-containing heterocyclic amine compounds, for the production of molded articles.

Abstract: This invention is directed to a compound of the formula ##STR1## wherein the substituents are defined hereinbelow. These compounds are used as accelerators in epoxy resin compositions, comprising (a) an epoxy resin, (b) dicyandiamide and optionally (c) solvents, fillers, reinforcement materials or inert materials, pigments or aids, for the production of moldings.

Abstract: Plastisols comprising a finely divided vinyl chloride polymer and the usual fillers, additives, and plasticizers, to which plastisols is added, as an adhesion promoter, an adduct formed between an epoxy compound and the condensation product formed between (1) a polyaminoamide, comprising polymerized fatty acids and an excess of a polyalkylene polyamine and (2) a carboxylic acid or an ester thereof, and methods for coating or adhering a substrate with such plastisols by applying said plastisols to the substrate and baking at temperatures of 90.degree. C. and up.

Abstract: What are disclosed are plastisols comprising a finely divided vinyl chloride polymer and the usual fillers, additives, and plasticizers, to which plastisols is added, as an adhesion promoter, the condensation product formed between (1) a polyaminoamide, comprising polymerized fatty acids and an excess of a polyalkylene polyamine and (2) a carboxylic acid or an ester thereof, and methods for coating or adhering a substrate with such plastisols by applying said plastisols to the substrate and baking at temperatures of 90.degree. C. and up.

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: What are disclosed are a method for the bonding of metallic materials and for producing coatings on metallic materials with a polyvinyl chloride plastisol which has improved adhesion at baking temperatures of 90.degree. C. and up and which contains, as an adhesion-improving additive, a condensation product of a polymerized fatty acid, a polycarboxylic acid having three or more COOH groups, an optional dicarboxylic acid, and an excess based on the carboxyl groups of the acid components, of a polyalkylene polyamine, and plastisols suitable for such a process.

Abstract: The method of hardening a glycidyl compound with a polyether urethane urea amino hardener is disclosed, said hardener being prepared by reacting (1) a blocked prepolymer prepared by reacting a phenolic compound with the reaction product of a polyether polyol with an excess of polyisocyanate, with (2) a polyfunctional amino compound.

Abstract: What is disclosed are a method for protectively coating a substrate which comprises applying to said substrate a coating of a plastisol containing a vinyl chloride polymer and then baking the coating at a temperature from 120.degree. C. to about 200.degree. C., said plastisol further comprising from about 0.1 to about 4.0 percent, by weight of said plastisol, of a Schiff base containing from 0.05 to 1.0 azomethine groups per 100 grams of compound and further containing a uretidine dione or isocyanurate group in the molecule and a plastisol such as is used in this method.

Abstract: What is disclosed are a method for coating or adhering a substrate material which comprises applying to said substrate material a plastisol composition comprising a polymer of vinyl chloride and then baking the composition onto the substrate material at a temperature between about 100.degree. C. and 200.degree. C., said plastisol composition further comprising from 0.05 to 5 percent, by weight of said plastisol composition, of an adhesion improver which is a compound or compounds having an azomethine group and a silane group and plastisol compositions for practising such a method.

Abstract: What is disclosed is the method of making a monoenamine having a free hydroxy group which comprises reacting a lactone or a carboxylic acid containing an hydroxy group with an amine selected from the group consisting of 2-methyl piperazine, 1-(2-aminoethyl)-piperazine, 4-aminomethyl-piperidine, or 2,3-dimethyl-3-(gamma-aminopropyl)-piperidine to form the corresponding secondary amine containing an hydroxy group and then reacting said secondary amine with an aliphatic aldehyde or cyclic ketone to form said monoenamine.

Abstract: In a method for coating metal by applying a polyvinyl chloride plastisol to the metal and baking the resultant coating, the improvement wherein the plastisol contains an adhesion improver which is an adduct formed between an isocyanate and a Schiff base (ketimine). Improved polyvinyl chloride plastisols for forming a protective coating on metal, said plastisols containing an adhesion improver which is an adduct formed between an isocyanate and a Schiff base (ketimine).

Abstract: What is disclosed is an adhesion improved plastisol composition adaptable to use as a coating material or adhesive and comprising a finely-divided vinyl chloride polymer together with a plasticizer and filler and an adhesion improver which is (1) a condensation product formed between a polymerized fatty acid mixture having a content, X, measured in weight percent of said mixture, of tripolymeric and higher polymeric fatty acids and excess polyalkylene polyamine; (2) a product formed by reacting said condensation product (1) with an aldehyde or ketone; or (3) an adduct formed between said condensation product (1) and an epoxy compound; said adhesion improver (1), (2), or (3) having a content, Y, of imidazoline groups, expressed as a percent by weight of condensation product (1), such that the values of both X and Y are at least 40, or if the value of either X or Y is below 40 then the other value is at least 40+Z, where Z is the difference between 40 and the smaller value.

Abstract: A method for dimerizing heptadiene acid esters in the presence of a catalyst which is a metal of Group IA of the Periodic System or an alcoholate, hydride, amide, or tritylate thereof, or is an alcoholate, hydride, or amide of a metal of Group IIA of the Periodic System.