Herberts Gesellschaft MIT Beschrankter Haftung

Herberts Gmbh

Dr. Kurt Herberts & Co. Gesellschaft MIT Beschrankter Haftung Vorm. Otto

501 Herberts Gesellschaft MIT Beschrankter

Hans-Peter Patzschke

Armin Gobel

Werner Lenhard

Bettina Vogt-Birnbrich

Klausjorg Klein

Dietrich Saatweber

Jurgen Dobert

Armin Goebel

Georg H Hendrikx

Marcus Brunner

Walter Schubert

Thomas Brock

Fritz Sadowski

Joachim Blum

Hans-Jurgen Schlinsog

Franjo Gol

Wolfgang Bogdan

Peter W Cerny

Albrecht Luttenberg

Hermann Kerber

Klaus Bederke

Wolfgang Goldner

Peter Schreiber

Reinhard Windmann

Knut Graf

Dieter Stranghoner

Reiner Bohmert

Heinrich Schwan

Paul Rupieper

Suresh Merchant

Gerhard Friederichs

Kurt E Jaeger

Christian Gruner

Heinrich Stolzenbach

Bettina Vogt

Hans Ulrich Meier

Klausj Org Klein

Wolfgang Kann

Armin G&ouml;bel

Heike Heuwinkel

Eduard Ehmann

Gerhard F Ottmann

Hans-Ulrich Meier

Horst Buchholz

Wolfgang Bogdan, Deceased

Knut Graff

Jurgen Doebert

Karlheinz Stransky

Reinhart Schmitt

Christa Luhmann

Franz-Josef Rankl

Aurel Blaga

Siegfried Kowalzick

Described are a method for the preparation of a multilayer coating and a coating material from an aqueous dispersion of a polymer with a particle diameter of the polymeric phase of 10 nm to 500 nm. The polymer has a number average molecular weight of 10,000 to 500,000 and an acid number of 12 to 40. The dispersion was obtained by polymerization without addition of emulsifier and in the presence of water insoluble initiators of a) 0.65 to 9 parts by weight of carboxyl group-free unsaturated monomers which, aside from the unsaturated bond, do not contain any other groups, which are reactive under the polymerization and curing conditions, together with 0 to 65% by weight, based on the total monomers of copolymerizable, hydroxyl group-containing monomers and/or 0 to 7% by weight, based on the total monomers, of ethylenically unsaturated monomers, in b) 1 part by weight, based on the resin portion, of an aqueous dispersion of a urea group-containing polyurethane, which was produced by chain extension of an NCO group-containing prepolymer based on polyester with an NCO group content of 1.0 to 10% with at least two urethane groups per molecule, with carboxyl groups corresponding to an acid number of 20 to 50 and a number average molecular weight of 600 to 6,000, with a polyamine with primary and/or secondary amino groups and/or with hydrazine in an aqueous medium without addition of emulsifier.

Method for the preparation of a multilayer coating and aqueous coating material suitable for this

The invention is directed to a lacquer coating for polymer sheet and a method for applying the coated polymer sheet to a molded body. The lacquer contains a binder, a metal pigment, a color pigment, organic solvent in water wherein the binder includes a combination of hard and flexible resins. The ratio of these resin is adjusted so that the elastic-plastic behavior of the lacquer coating matches that of the plastic polymer sheet. In this fashion, the coated sheet can be deformed without causing substantial blistering or cracking of the coating on the polymer sheet.

Polymer sheet coated with lacquer and a method of applying the coated

Stove-enamel coating media and the use thereof

Aqueous coating media and their use in single-layer and multi-layer

A pigment paste forming resin having a viscosity of from about 50 to about 5,000 mPa and a solids content of from about 20 to about 40%, containing from about 20 to about 50 parts of a polyester urethane resin having an acid number of from about 10 to about 50, with from about 70 to about 100% of the acid groups being neutralized, the resin being prepared by the reaction of (a) one or more polyester polyols that do not contain any carboxyl groups, having an OH number of from about 35 to about 200, and a number average molecular weight of from about 500 to about 5000, mixed with from about 2 to about 30 wt. % based on the polyester polyol of one or more low molecular weight diols having a molecular weight of from about 60 to about 350, whereby a part of the low molecular weight diol contains at least one acid group capable of forming an anion, and with 0 to about 6 wt. % based on the polyester polyol of one or more low molecular weight triols having a molecular weight of from about 60 to about 350, said reaction being with (b) one or more diisocyanates in which where the ratio between the OH groups of polyester polyol, diol, and triol to the NCO groups of the diisocyanate is more than from about 1.0 to about 1.3, whereby the quantity of diisocyanate is selected to insure that the polyester urethane produced has a number average molecular weight of from about 2,000 to about 30,000; the reaction being carried out in the presence of (i) from about 0.3 to about 18 parts by weight of ammonia and/or an amine; (ii) from about 4 to about 25 parts by weight of one or more organic solvents that are at least partly miscible with water; and (iii) from about 15 to about 75 parts by weight of water.

Binder formulation for producing pigment

Aqueous dispersion of polyurethanes containing siloxane linkages,

A process for preparing a multi-layer coating on an electrically nonconductive surface of a substrate, which comprises

Method for producing multilayer coatings

Process for producing decorative multiple-layer coatings

A method of manufacturing aqueous dipsersion of polyurethane resins free from urea groups and containing ionic groups and suitable for coating agents, with a number average moleculear weight (Mn) of 10,000 to 300,000 and an acid number of 5 to 50, by preparing a polyurethane prepolymer containing OH groups and with an OH number of 5 to 75 and a number average molecular weight (Mn) of 5,000 to 50,000.

Aqueous dispersion of polyurethane resins, a method of manufacturing

Aqueous binder dispersions for aqueous coating compositions, which are stable in storage and have good applicational properties. The dispersions are obtainable by joint chain extension of

Aqueous dispersion based on polymer/polyurethane resins, process for the

The description relates to physically drying water-based coating agents. They contain water, metallic pigments, optional other pigments, neutralizing agents, conventional additives, small proportions of solvents and a binder mixture consisting of

Water-based physically drying coating agents, manufacture and use thereof

A process for the manufacture of aqueous coating agents, obtained by mixing an aqueous dispersion of one or more water-dispersible or water-soluble binders that contain groups reactive with isocyanate with one or more polyisocyanates that are liquid or are present in liquid form as a result of the addition of organic solvents, as well as optionally pigments, fillers and/or customary lacquer additives, wherein an aqueous dispersion is used of one or more binders with a number-average molecular weight (Mn) of 1000 to 100,000, groups reactive with isocyanate equivalent to a hydroxyl number of 20 to 250 and an acid number of 10 to 100, whose acidic groups are at least partly neutralized by one or more polyamines with primary and/or secondary amino groups mixed with one or more tertiary monoamines, and the polyisocyanate that is liquid or present in liquid form is dispersed in this dispersion shortly before the use of the coating agents; and the coating agents obtained.

Process for the manufacture of aqueous coating agents, the coating

There are described aqueous dispersions of polyurethane resins, the production thereof and their use in aqueous coating agents, said dispersions being obtainable in aqueous or non-aqueous phase from

Aqueous dispersion of polyurethane resins, the production thereof and

An aqueous coating composition which is self-drying or is crosslinked by external agents, processes and dispersions for its preparation and its use. The coating composition comprises:

Aqueous polyurethane resin dispersion, processes for its preparation,

An aqueous solution or dispersion of a vehicle for an aqueous cataphoretic coating material, the solution or dispersion containing one or more acid-neutralized, basic, film forming resins, an organic solvent, and a cross linking agent for the film forming resins, the aqueous solution or dispersion being obtained by mixing the following components A) and B): A) from 95% to 50% by weight solids basis of an aqueous solution or dispersion of one or more, neutralized, basic, film forming resins having a resin solids content of from 25% to 55% by weight, and an organic solvent content of more than 4% by weight, both based on the total solution or dispersion, and a minimum film forming temperature of less than 30.degree. C., and one or more cross linking agents for the film forming resins of the components A) and B), and B) from 5 to 50% by weight solids basis of an aqueous solution or dispersion of one or more acid-neutralized, basic, film forming resins having a resin solids content of from 25 to 55% by weight, and an organic solvent content of less than 3% by weight, both based on the total solution or dispersion, and a minimum film forming temperature of at least 27.degree. C., there being an at least 10.degree. C. difference between the minimum film forming temperatures of the solutions or dispersions A) and B).

Composition for improved cathodic deposition

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Wuppertal, Germany

Hans-Peter Patzschke