Basf Coatings Ag

Bernd Biallas

Wolfgang Duschek

Harald Berlin

Werner Rotz

Fatmir Raka

Ulf Schlotterbeck

Klaus Holzapfel

Peter Machaczek

Stefan Sickert

A process for producing sheets, in which a free-radically crosslinkable coating composition (K) which after crosslinking to completion gives a transparent coating (KE) is applied to a backing sheet (T), a coating (KT), dried but not yet crosslinked to completion, is produced from the coating composition (K), on (KT) a pigmented coating (PB) is produced and optionally on (PB) a tiecoat is applied, the crosslinkable coating composition (K) comprising a free-radically crosslinkable component (KK) based on urethane acrylate and containing carbamate and/or biuret and/or allophanate and/or urea and/or amide groups, (KK) having a number-average molecular weight of from 1000 to 50 000 g/mol, having a double bond content of from 1.0 to 5.0 mol of double bonds per 1000 g of reactive component (KK), containing on average per molecule &#x3e;1 branching point, containing 5%-50% by weight, based in each case on the weight of component (KK), of cyclic structural elements, and containing at least one aliphatic structural element having at least 6 carbon atoms in the chain.

Method for producing films having a coating the films obtained in this way and their use for producing molded parts in particular for use in automobile construction

A method of determining direction-dependent properties of coatings, in which measurements of coating properties are made along a test track ( ) on a sample coating using one or more measuring instruments and at least one measurement is recorded in relation to direction ( ). The course of the sample coating is such that there are points of identical coat thickness ( ) with different coat-thickness gradients ( ) along the test track.

Method for determining direction-dependent properties of enamels

In a method of determining the shade stability of paints, the total color difference &Dgr;E(FT) between the color at the film thickness FT and the color at a predetermined film thickness FT is measured for different film thicknesses FT. Subsequently, the slope &sgr;(FT) of the plot &Dgr;E(FT) is determined, which represents a useful parameter for the shade stability. Alternatively to &sgr;(FT), it is also possible to determine the limiting film thickness FT at which the total color difference &Dgr;E(FT) passes below a predetermined limit. The method of determining the shade stability is additionally employed in order to optimize paint formulations.

Method for determining the shade stability of lacquers

Apparatus and method for measuring coated test panels, the test panels ( ) being taken from a feed magazine ( ) by a gripping and moving device, e.g. a laboratory robot, placed on a measuring station ( ) and, finally, transferred to a delivery station ( ). In the measuring station ( ) measurement of the various properties of the coating is carried out by the laboratory robot ( ) using various measuring devices ( ). This process can in particular involve spatial resolution and electronic recording. The test panels can furthermore be distinguished by a bar code system which is recorded and evaluated electronically.

Method and device for measuring painted test tables

Laboratory drier for the simulation of industrial lacquer drying installations, containing an irradiation space with IR emitters and a convection space adjacent to this and having ventilated and heated drying gases.

Growing community of inventors

Albersloh, Germany

Bernd Biallas