Basf Aktiengesellschaft

Basf Lacke+farben Ag

Basf Farben + Fasern Ag

Basf Aktiengesellschaft, Patentabteilung

Klaas Ahlers

Eberhard Schupp

Rolf Osterloh

Werner Loch

Thomas Schwerzel

Thomas Perner

Michael Geist

Gunther Ott

Arnold Dobbelstein

Georg Schon

A synthetic resin which carries basic nitrogen groups and is water-dilutable by protonation with acid is obtainable by reacting

Synthetic resin with basic nitrogen groups, preparation and use thereof

A synthetic resin which carries basic nitrogen groups and is water-dilutable by protonation with an acid, containing

Synthetic resin with basic nitrogen groups from resins reacted with the

A binder which is water-dilutable on protonation with acid and obtainable by a reaction of

Binders water-dilutable by protonation with acid

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

Binder which is rendered water-dilutable by protonation with an acid,

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

Binders for cathodic electrocoating

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

Synthetic resin containing quaternary ammonium groups, its preparation,

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.

Binders for cathodic electrocoating which contain non-tertiary basic

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 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.

Urea/polyamine/secondary monoamine/polyalcohol condensate

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

Synthetic resin carrying basic nitrogen groups, its preparation, coating

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.

Heat-curable surface-coating agents, and their use

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.

Preparation of self-crosslinking synthetic resins

Binders useful for cathodic electrocoating are water-dilutable on addition of acid and comprise a mixture of

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Muenster, Germany

Klaas Ahlers