Basf Aktiengesellschaft

Fritz E Kempter

Eberhard Schupp

Erich Gulbins

Heinrich Hartmann

Hans-Uwe Schenck

Wolfram Weiss

Juergen Nieberle

Franz Matejcek

Werner Neubach

Gunther Sabelus

Wolfgang Reich

Klaus Boehlke

Herbert Spoor

Gerd Busse

Rainer Blum

Rolf Osterloh

Harro Petersen

Manfred Niessner

Hans Renz

Jurgen Hofmann

Heino Thiele

Ruprecht Kroker

Horst Schmidt

Ulrich Jager

Albrecht Zosel

Armin Haag

Klaus Flory

Ralph Diener

Eckhard Korona

A process for the continuous polymerization of vinyl monomers to form vinyl polymers having a molecular weight M.sub.n of from 1000 to 20,000 comprises

Continuous polymerization of vinyl monomers

Copolymers crosslinkable by a free radical method are prepared by polymer-analogous reaction of

Preparation of copolymers crosslinkable by a free radical method

Copolymers crosslinkable by a free radical method and having a number average molecular weight of from 1500 to 6000 and a molecular weight distribution corresponding to a polydispersity of from 1 to 4.0 are obtainable by polymer-analogous reaction of

Copolymers crosslinkable by a free radical method

Aqueous nonwoven binders that give reduced formaldehyde emission on curing are based on condensation products of urea or derivatives thereof, formaldehyde and glyoxal in a molar ratio, based on the solid binder, of from 1.5 to 2.5 moles of formaldehyde and from 0.1 to 0.5 mole of glyoxal per mole of the total urea used.

Preparation of aqueous nonwoven binders of low formaldehyde emission on

Webs composed of inorganic or organic fiber material are bonded with a cured resin mixture consisting essentially of

Mineral and textile webs bonded with a cured resin mixture

A low-formaldehyde binder consists essentially of

Low-Formaldehyde binders

A heat-curable aqueous coating agent contains, as a binder, a mixture or precondensate of

Heat-curable coating agent, and cathodic electrocoating

Phenol resins which are modified with compounds possessing amide and/or imide groups and are based on phenol resol ethers bonded via o,o'-methylene ether groups, and a process for their preparation. The novel modified phenol resol ethers are useful for the preparation of coating systems, in particular as crosslinking agents for cathodic electrocoating binders, and for the preparation of adhesives and rubber assistants.

Modified phenol resole ether resins and their preparation

Cathodic coating agents which are rendered water-dilutable by the addition of an acid, contain binder systems possessing basic nitrogen groups and may or may not contain pigments, dyes, fillers, solvents, antioxidants, other surface coating assistants and/or additional crosslinking components, the binder system containing sulfonate and/or phosphonate groups or the esters of these groups in an amount of from 0.05 to 3% by weight, and the preparation of such products. The novel coating agents are useful for the cathodic electrocoating of electrically conductive substrates.

Coating agents and their preparation, and cathodic electrocoating

Essentially phenol-free phenol resol ethers which are bonded via o,o'-methylene ether groups are prepared by a process in which

Preparation of phenol resol ethers bonded via o,o'-methylene ether groups

The heat-curable coating agent according to the invention contains a combination of a binder, which possesses basic nitrogen groups and is rendered water-dilutable by protonation with an acid, and a crosslinking agent and, if required, pigments, fillers, corrosion inhibitors, surface coating assistants and catalysts, and the binder used is a reaction product of a dicarboxylic acid or of a dicarboxylate or of a (meth)acrylate oligomer or polymer with an adduct of a di- or triglycidyl ether and a polyamine, the polyamine containing 2 or more amine nitrogen atoms per molecule and one or more alkylene chains of 3 or more carbon atoms between the amino groups, and has an NH amine number of from 50 to 150 mg of KOH/g and is combined with aminoplasts and/or phenoplasts as crosslinking agents. The novel coating agent is useful as a binder for the cathodic electrocoating of metal articles.

Heat-curable coating agent and its use

Amide-containing epoxy resin/amine adducts are prepared by a process in which an epoxy resin/amine adduct containing primary and/or secondary aminoalkyl groups is reacted with a carboxylic acid in the presence of esterification catalysts, particularly advantageously in the presence of an alcohol. The products prepared according to the invention are useful as binders for cathodic electrocoating.

Preparation of amide-containing epoxide/amine adducts

A cathodic electrocoating binder comprises a mixture of

Cathodically electrodepositable surface coating binder

A bath composition for cataphoretic electrocoating of conductive surfaces contains coating agents which have been rendered soluble or dispersible with acid, contain basic nitrogen groups and carry groups of the general formulae (1) and (11) ##STR1## and, optionally, also groups of the general formulae (III) and/or (IV) ##STR2## where R.sup.1 and R.sup.2 are each alkyl, hydroxyalkyl or alkoxyalkyl, R.sup.3 and R.sup.4 are each hydrogen or methyl, R.sup.5 and R.sup.6 are each hydrogen, alkyl or a divalent radical of a polymer molecule which is bonded to a phenol or phenol ether, n.sup.1 is 1, 2 or 3 and n.sup.2 is 1 or 2, and where the oxygen bonded to the phenyl radical is either in the form of the OH group or etherified.

Bath composition for cataphoretic electrocoating

Polyadducts/polycondensates which can be diluted with water when protonated with an acid and which contain basic nitrogen groups are obtained by the polyaddition reaction of

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Mannheim, Germany

Fritz E Kempter