Abstract: A synthetic resin which carries basic nitrogen groups and is water-dilutable by protonation with acid is obtainable by reacting(A) an epoxy resin having an average molecular weight M.sub.n of from 300 to 6,000 and on average from 1.5 to 3.0 epoxy groups per molecule with(B) a ketimine of a primary amine additionally containing one or more urethane groups and optionally also with(C) a diketimine of a diprimary amine containing no urethane groups and optionally also with(D) a secondary amine which may contain a tertiary amino group also, a ketimine of a primary monoamine and/or a ketimine of a primary/tertiary diamine.

Abstract: A synthetic resin which carries basic nitrogen groups and is water-dilutable by protonation with acid is obtainable by reacting(A) an epoxy resin having an average molecular weight M.sub.n of from 300 to 6,000 and on average from 1.5 to 3.0 epoxy groups per molecule with(B) a ketimine of a primary amine additionally containing one or more urethane groups and optionally also with(C) a diketimine of a diprimary amine containing no urethane groups and optionally also with(D) a secondary amine which may contain a tertiary amino group also, a ketimine of a primary monoamine and/or a ketimine of a primary/tertiary diamine.

Abstract: A synthetic resin which carries basic nitrogen groups and is water-dilutable by protonation with an acid, containing(A) a chain-extended, amine-modified epoxy resin obtainable by reacting(a.sub.1) an epoxy resin having an average molecular weight M.sub.n of from 300 to 6,000 and on average from 1.5 to 3.0 epoxy groups per molecule with(a.sub.2) a diketimine of a diprimary diamine, which diprimary diamine contains no further groups reactive with epoxy groups under mild conditions and(B) an amino-modified epoxy resin obtainable by reactingb.sub.1) an epoxy resin having an average molecular weight M.sub.n of from 800 to 6,000 and on average from 1.5 to 3.0 epoxy groups per molecule with(b.sub.2) a secondary amine or a secondary-tertiary diamine, a ketimine of a primary monoamine or a ketimine of a primary/tertiary diamine or a mixture of these (b.sub.2) components, with the proviso that (A) and (B) are different.

Abstract: A synthetic resin which carries basic nitrogen groups and is water-dilutable by protonation with acid is obtainable by reacting(A) an epoxy resin having an average molecular weight M.sub.n of from 200 to 6,000 and on average from 1.5 to 3.0 epoxy groups per molecule with(B) a ketimine of a primary amine additionally containing one or more urethane groups and optionally also with(C) a diketimine of a diprimary amine containing no urethane groups and optionally also with(D) a secondary amine which may contain a tertiary amimo group also, a ketimine of a primary monoamine and/or a ketimine of a primary/tertiary diamine.

Abstract: A binder which is water-dilutable on protonation with acid and obtainable by a reaction of(A) an epoxy resin having an average molecular weight of from 300 to 6,000 and on average from 1.5 to 3.0 epoxide groups per molecule and(B) from 20 to 30 mol %, based on the amount of epoxide groups present in epoxy resin (A), of one or more secondary amine and/or alkanolamine of up to 40 carbon atomsand subsequent reaction with(C) a copolymer which is based on butadiene and acrylonitrile and contains primary and/or secondary amino groups, the amount of (C) being so dimensioned that the number of primary and secondary amino groups corresponds to from 1 to 50 mol % of the epoxide groups present in the epoxy resin (A), and also(D) with one or more primary and/or secondary amine to convert any epoxide groups still present, is usedin particular for cathodic electrocoating.

Abstract: Binders which are rendered water-dilutable by protonation with an acid, a process for their preparation and their use.These binders are obtainable by reacting a(A) Reaction product of a(a) carboxyl-containing component, consisting of a(a1) carboxyl-containing butadiene/acrylonitrile copolymer having a molecular weight of from 500 to 8,000, if necessary as a mixture with(a2) a dicarboxylic acid which differs from (a1) and, if appropriate,(a3) a monocarboxylic acid and(b) a diprimary and/or primary/secondary amine, with the proviso that from 0.7 to 5 moles of the said amine are used per mole of carboxyl groups of component (a),with one or more(B) epoxy resins having a mean molecular weight from 300 to 6,000 and containing on average from 1.5 to 3.0 epoxide groups per molecule and, if required,(C) an aliphatic or cycloaliphatic secondary amine.In combination with a crosslinking agent, they are useful as coating materials, in particular for cathodic electrocoating.

Abstract: Binders for cathodic electrocoating which are based on polyadducts/polycondensates which carry basic nitrogen groups and are rendered water-dilutable by protonation with an acid, and one or more crosslinkng agents for these polyadducts/polycondensates, and their use.These binders essentially consist of a mixture of(A) from 50 to 90% by weight of a polyadduct/polycondensate which carries basic nitrogen groups and is obtainable by reacting(a) an adduct of a secondary amine and a polyepoxide compound, the adduct still containing free epoxide groups, with(b) a condensate which contains primary amino groups and is obtained from a primary diamine of not less than 4 carbon atoms and one or more mono- and/or dicarboxylic acids, one or more primary amino groups of the condensate (b) being used per free epoxide group of the adduct (a), and(B) from 10 to 50% by weight of a crosslinking agent which does not react with component (A) at room temperature but reacts with the latter at elevated temperatures with crosslinking.

Abstract: A synthetic resin which contains quaternary ammonium groups, and its preparation.The water-dilutable synthetic resin which contains quaternary ammonium groups and furthermore contains one or more basic secondary and/or tertiary amino groups per quaternary ammonium group is an adduct of(A) a quaternary ammonium salt which is obtained by reacting(a) an organic compound containing two or more basic amino groups per molecule, one of which is a primary group and is protected as a ketimine by prior reaction with a ketone, and the remaining groups are tertiary groups, with(b) an organic or inorganic acid and(c) a monoepoxide compound, and, if necessary, then eliminating the ketone hydrolytically,(B) a resin which contains on average from 1.5 to 3.0 epoxide groups per molecule, and, if required,(C) one or more monofunctional organic compounds whose functional group is capable of undergoing an addition reaction with an epoxide.

Abstract: The present invention relates to binders for cathodic electrocoating. These binders contain non-tertiary basic amino groups in addition to phenolic Mannich bases and consist of a mixture or precondensate of a polymer, polycondensate or polyadduct which has a mean molecular weight of 800 to 8,000 and a content of basic, primary and/or secondary amino groups of 0.8 to 8 equivalents per 1,000 molecular weight units and one or more phenolic Mannich bases prepared from one or more polynuclear polyphenols, formaldehyde or a formaldehyde donor and one or more secondary aliphatic amines, not more than one equivalent of a secondary amine and not more than 2 equivalents of formaldehyde being employed per equivalent of phenol for the preparation of component (B). These binders can be rendered water-dilutable by the addition of an acid and are suitable for the cathodic electrocoating of electrically conductive articles.

Abstract: Binders for cathodic electrocoating which are based on polyadducts/polycondensates which carry basic nitrogen groups and are rendered water-dilutable by protonation with an acid, and one or more crosslinking agents for these polyadducts/polycondensates, their use and electrocoating baths prepared from them.These binders essentially consist of a mixture of(A) from 50 to 90% by weight of a polyadduct/polycondensate which carries basic nitrogen groups and is obtainable by reacting(a) an essentially epoxide-free adduct of a secondary amine and polyepoxide compound with(b) a condensate of a diamine/polyepoxide adduct which is prepared in the presence of excess diamine and separated off from excess diamine after complete conversion of the epoxide groups, with one or more mono- and/or dicarboxylic acids of not less than 6 carbon atoms.(B) from 10 to 50% by weight of a crosslinking agent which does not react with component (A) at room temperature but reacts with the latter at elevated temperatures with crosslinking.

Abstract: A processor for the preparation of urea condensates and the preparation of heat-curable surface coatings.To prepare these urea condensates, primary di- and/or polyamine is reacted with urea, a secondary monoamine and a polyalcohol which contains certain groups at elevated temperatures and in the presence or absence of a catalyst, and the ammonia formed is separated off.These urea condensates are suitable as binder components in heat-curable surface coatings, in particular for heat-curable cathodic electrocoating finishes.

Abstract: A synthetic resin carrying basic nitrogen groups, its preparation, coating materials prepared from this resin, and a process for cathodic electrocoating.This synthetic resin is obtained by reacting(A) an epoxy resin which(B) a diketimine of a diprimary amineand, if required,(C) with a secondary amine, which may additionally contain a tertiary amino group, with a ketimine of a primary monoamine and/or with a ketimine of a primary/tertiary diamine,a diketimine obtained from(B.sub.1) a ketone and(B.sub.2) a branched aliphatic diprimary diamine of 5 to 9 carbon atoms and/or(B.sub.3) one or more diaminodiamides which are obtained by condensation of 2 moles of diamine (B.sub.2) and 1 mole of a dicarboxylic acidbeing employed as component (B).After protonation with an acid, this synthetic resin is useful as a binder for cathodic electrocoating.

Abstract: Heat-curable surface-coating agents useful not only for application as solvent-containing finishes and for powder coating but also, in their protonated form, for cathodic electrocoating contain, as a binder, a mixture of (A) a polyadduct, polycondensate or other polymer having an average molecular weight M.sub.n of from 500 to 10,000 and, per molecule, on average two or more OH and/or primary and/or secondary amino groups and (B) a reaction product of (a) one or more polyisocyanates, (b) one or more secondary monoamines and, if appropriate, (c) one or more polyalcohols having two or more hydroxyl groups.

Abstract: Synthetic resins which are self-crosslinking under the action of heat have on average two phenolic hydroxyl groups per molecule and are prepared by reacting a reaction product of an epoxy resin and a bifunctional phenol with formaldehyde and a mixture of secondary amines.After they have been protonated with an acid, the resins are suitable as cathodic electrocoating binders.

Abstract: Binders useful for cathodic electrocoating are water-dilutable on addition of acid and comprise a mixture of(A) a polyadduct which carries basic nitrogen groups and contains groups of the formula (I) and/or (II) ##STR1## where R.sup.1 and R.sup.2 are hydrogen or methyl and R.sup.3 and R.sup.4 are alkyl or hydroxyalkyl or together are a 5- or 6-membered ring, and(B) a reaction product of a polyisocyanate and an olefinically unsaturated amine which carries a secondary amino group and a methacrylamide or methacrylate group.

Abstract: Heat-curable surface-coating agents useful not only for application as solvent-containing finishes and for powder coating but also, in their protonated form, for cathodic electrocoating contain, as a binder, a mixture of (A) a polyadduct, polycondensate or other polymer having an average molecular weight M.sub.n of from 500 to 10,000 and, per molecule, on average two or more OH and/or primary and/or secondary amino groups and (B) a reaction product of (a) one or more polyisocyanates, (b) one or more secondary monoamines and, if appropriate, (c) one or more polyalcohols having two or more hydroxyl groups.

Abstract: The present invention relates to a process for the preparation of urea condensates and to their use.To prepare these urea condensates, a primary di and/or polyamine is reacted with urea, a secondary monoamine and if appropriate a polyalcohol at elevated temperatures in the presence or absence of catalysts, and the ammonia formed is separated off.These urea condensates are suitable as binder components in thermosetting surface coatings.

Abstract: This application discloses water-dispersible binders which are based on modified epoxide/amine adducts and are the reaction products ofA. polyepoxides having an epoxide equivalent greater than 1 and a mean molecular weight M.sub.n of 140 to 5,000 withB. diphenylolalkanoate esters andC. amines.

Abstract: A synthetic resin which carries basic nitrogen groups and can be diluted with water as a result of protonation with an acid can be obtained by reacting an epoxy resin, having a mean molecular weight M.sub.n of from 300 to 6,000 and containing on average from 1.5 to 3.0 epoxide groups per molecule, with a diketimine of a primary diamine and, if appropriate, a secondary amine, which may additionally contain a tertiary amino group, a ketimine of a primary monoamine and/or a ketimine of a primary/tertiary diamine.These resins are useful as binders for coating agents, in particular for the cathodic electrocoating of electrically conductive substrates.

Abstract: Heat-curable surface-coating agents which, for example in their protonated form, can be used in cathodic electrocoating contain, as a binder, a mixture of (A) a polyadduct, polycondensate or other polymer which has an average molecular weight M.sub.n of from 500 to 10,000 and, per molecule, on average two or more OH and/or NH groups and (B) a reaction product of a polyisocyanate and an olefinically unsaturated amine which carries a secondary amino group and a methacrylamide or methacrylate group.