Schering Aktiengesellschaft

Christian Burba

Werner Mrotzek

Norbert Esper

Ulrich Goeke

Herbert Franz

Hans-Guenter Volland

Alwin Krotzek

Hermann-Josef Lucas

Hans-Gunter Volland

Bernd Neffgen

Egon Bierwirth

Rolf Spickers

Peter Borner

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

Process for manufacturing fiber-reinforced base materials for the

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.

Imidazolyl derivatives, their use as curing agents in epoxy-resin

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.

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.

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.

Process for the manufacture of pipe from composite materials based on

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.

Process for the fabrication of fiber-reinforced wound structures from

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 and

Imidazolyl-urea compounds and their use as cure accelerators in epoxy

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.

Substituted 3-(n-imidazolyl)propionic hydrazides, their use as curing

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.

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.

Polyvinyl chloride plastisols

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.

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:&gt;1 to 1:2.

Epoxy resin/cycloaliphatic amine curing agent mixtures

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.

Method for making coatings and adhesive bonds with polyvinyl chloride

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.

Hardenable urethane-epoxy resin mixtures

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.

Growing community of inventors

Herbern, Germany

Christian Burba