E.i. Dupont De Nemours and Company

Oliver Reis

Martin Wulf

Karl-Friedrich Doessel

Carmen Flosbach

Thomas Fey

Volker Rekowski

Werner Lenhard

Matthias Kimpel

Christine Kurz

Stuart Alexander Kernaghan

Christoph Moelzer

Gerhard Pech

A process for the production of a coating layer from a thermally curable coating composition on a substrate, comprising the successive steps:

Process for the production of paint coating layers

A process for the production of a coating layer from a thermally curable coating composition on a substrate, comprising the successive steps: wherein the supply of thermal energy onto the coating proceeds prior to and/or after removal of the backing foil.

The invention relates to a process for repairing coated substrate surfaces comprising the following successive steps:

Process for repairing coated substrate surfaces

A process for the production of a coating layer from a coating composition curable with high-energy radiation on a substrate, comprising the successive steps:

Electrodeposition coating process

Process for coating

The invention is directed to a process for coating substrates by applying at least one coating composition to an optionally precoated substrate and then curing the coating layer(s) thus obtained, wherein at least one of the coating layers is produced from a coating composition which contains a binder system having olefinic double bonds capable of free-radical polymerization and having reactive functional groups within the meaning of addition and/or condensation reactions, the resin solids of the coating composition having a C&boxH;C-equivalent weight from 300 to 10,000, preferably from 300 to 8,000, and curing of this (these) coating layer(s) is carried out by irradiation with NIR radiation in the wave length range 760-1500 nm.

Process for coating substrates

A process for the production of a multi-layer coating, wherein a primer layer which is electrically conductive in the at least partially cured state is applied by electrodeposition from an electrodeposition coating agent (I) to an electrically conductive three-dimensional object, at least partially cured exclusively by the action of near infra-red radiation substantially only on the surfaces of the object exposed to the radiation, and an additional coating layer is applied by electrodeposition from an electrodeposition coating agent (II) which is different from electrodeposition coating agent (I), and then this additional coating layer as well as completely uncured or incompletely cured area parts of the primer layer produced from electrodeposition coating agent (I) are cured.

Process for multi-layer coating

Improved aqueous powder coat dispersion, comprising (a) a powder coating dispersed in (b) an aqueous phase, wherein the aqueous phase contains a silica compound selected from the group consisting of (i) 0.2 to 2% by weight, based on the weight of the powder coating, of finely divided silicic acid with large BET-surface; (ii) 0.1 to 1.5% by weight, based on the weight of the powder coating, of layered silicates; and (iii) combinations thereof, exhibit improved sedimentation properties and provide coatings with improved sag characteristics.

Aqueous powder coat dispersions, process for their preparation and their use

The process of this invention applies at least one coating composition to an optionally precoated substrate and then cures the thus obtained coating layer(s), whereby at least one of the coating layers is prepared from a coating composition that can be chemically cross-linked solely by radical polymerization of olefinic double bonds, the resin solid of the composition has a C&boxH;C equivalent weight from 100 to 10,000, preferably from 100 to 5,000, and the curing of the coating layer(s) is carried out with NIR radiation in the wave length range from 760-1500 nm.

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Witten, Germany

Oliver Reis