Herberts Gmbh

Herberts Gesellschaft MIT Beschrankter Haftung

Vianova Kunstharz A.g.

Wolfgang Goldner

Walter Schubert

Carmen Flosbach

Hans-Peter Patzschke

Klaus Bederke

Werner Lenhard

Klausjorg Klein

Gert Dworak

Volker Duecoffre

Matthias Kimpel

Werner Staritzbichler

Knut Graf

Klaus P Doebler

Frank Lieverz

Klaus-Peter Doebler

Volker Ducoffre

Michael Georgiadis

Herbert Kalke

Albrecht Luttenberg

Roland Grutter

Manfred Oppermann

Reiner Jungermann

Klaus Dobler

Andreas Runkel

Process for the production of multi-layer lacquer coatings on

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 a multi-layer lacquer coating of a substrate, in particular of automobiles or their parts, in which for the layer of primer surfacer (filler) a coating agent is used which is based on one or several cationic binding agents. Low stoving temperatures and corrosion protection are achieved.

Process of producing multilayer coatings with cationic layers of primer

Aqueous coating agent including a water-dilutable mixture of binding agents of

Aqueous coating agent, its manufacture and use for producing layers of

Process for the preparation of water-dilutable coating binders and their

A coating material is described which exhibits high resistance to chemicals and is emulsifier-free. The coating material is useful as a lacquer layer coating on metallic substates such as automobiles. The coating material is based upon a polyester oligomer/polyacrylate wherein the polyacrylate contains hydrophilic and hydrophobic portions and the polyester contains hydroxyl functions. Capped polyisocyanates are also included in the coating material.

Emulsifier-free, heat-curable coating material, its preparation and use

A process is described for producing multilayer coatings in which a first coating layer of a first aqueous coating medium is applied to an electrically conducting substrate by electrophoretic deposition, is provided wet-in-wet with a second coating layer of a second aqueous coating medium, followed by joint stoving, wherein a coating medium based on one or more vehicles stabilised by ionic groups and which crosslink on stoving with the formation of urethane groups is used for the second coating layer, and the coating media are selected so that the maximum pigment/vehicle weight ratio of the first coating medium is 1:1, that the ratio of the pigment/vehicle weight ratio of the first coating medium to that of the second coating medium is up to 1.8, and the minimum stoving temperature interval of the second coating layer is above that of the first coating layer or overlaps the latter so that the lower limit of the interval for the second coating layer is above the lower limit of the interval for the first coating layer.

Process for the production of multilayer coatings

A process for producing a gravel-impact-resistant multicoat lacquer finish by cathodic electrodeposition of a primer on an electrically conductive substrate, subsequent application of a primer surfacer coat of an aqueous paste filler that contains one or several water-dilutable binders that are curable at temperatures up to 180.degree. C., with subsequent application of one or several base coats and finishing coats. To produce the primer surfacer coat, an aqueous paste filler is used that contains 0.1-20 wt % polyamide powder, polyacrylonitrile powder or mixtures thereof with particle diameters in the range 0.1-100 .mu.m, wherein the high-solid value of the aqueous paste filler is not less than 75 wt %.

Process for producing gravel-impact-resistant multicoat lacquer finishes

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Heiligenhaus, Germany

Wolfgang Goldner