Daimler Chrysler Ag

Daimler-benz Ag

Mercedes-benz Aktiengesellschaft

Eisenmann Maschinenbau Kg

Micro Compact Car Ag

Karl Woerwag Lack-und Farbenfabrik Gmbh & Co. Kg

Fritz Dannenhauer

Karl Holdik

Andreas Stohr

Michael Gailberger

Katja Strelzyk

Peter Strohriegl

Petra Grundig

Anne Barth

Fritz Mezger

Maria-Theresia Sailer

Erik Grosse

Juergen Hanf

Anja Keller

Hartmut Seliger

Claudia Witt

Martin Kirschbaum

Klaus Sussmann

Kaarl Holdik

Kathrin Kuerschner

A process for recycling composite materials that comprise fibers and a matrix includes exposing the composite material to electromagnetic waves in the form of microwaves. The electromagnetic waves induce an introduction of energy into the composite material, leading to a separation of fibers and matrix. The separation operation can be assisted by a suitable solvent.

Process for recycling fiber composite materials

Compounds and their application as well as a method of producing liquid crystalline polymers therefrom

The invention relates to a pigment with color dependent on the viewing angle, which has been obtained by three-dimensional crosslinking of oriented substances of liquid-crystalline structure having a chiral phase. In order to stabilize the color of such a pigment at elevated temperatures, crosslinking is carried out in the presence of at least one additional, color-neutral compound comprising at least two crosslinkable double bonds.

Pigment with color dependant on viewing angle, method of making and use of same

A compound for use as a nematic phase in cholesteric liquid polymers of the general formula C&mdash;A,, and a production process.

Compounds, process for their manufacture, as well as a process for manufacturing liquid-crystalline polymers using these compounds

The invention relates to platelet-shaped interference pigments for effect paints for painting objects of daily use, especially vehicle bodies, with the interference pigments including liquid crystal polymers (LCP) with main and/or side groups&mdash;mesogens&mdash;which are arranged at least approximately chirally-nematically or the like. In order to be able to paint different colored backgrounds in a covering fashion using the transparent interference pigments, the interference pigments are built up in several layers and also have at least one and preferably two interfering layer(s) of liquid crystal polymers and even of a single, preferably centrally located, light-absorbent layer, with the light-absorbent layer absorbing at least a portion of the visible light spectrum. Advantageously the light-absorbent layer can absorb light in the entire visible light spectrum, in other words appear black. It is also possible for it to be made light-absorbent within those partial areas of the visible light spectrum that lie outside one of the colors of the interference pigments. A method is also disclosed for manufacturing the multilayer interference pigments.

Method for producing platelet-shaped interference pigments

The invention relates to compounds with the general formula Y.sup.1 --A.sup.1 --M.sup.1 --A.sup.2 --Y.sup.2 wherein

Compounds and their application as well as a method of producing liquid

A process for repairing relatively small paint faults in powder coating layers, in which, in the region of the faulty point, a cutout is introduced into the powder coating layer with precisely defined dimensions with respect to its area and also with respect to its depth. A filler made of powder coating and/or a pre-product of the powder coating is introduced into the cutout. The filler is dimensioned to correspond to the volume of the cutout, in particular corresponding to the dimensions of the cutout, and is coherent. The filler introduced is joined, in particular bonded, to the powder coating layer arranged outside the cutout.

Process for repairing paint faults in paint layers

Pigment with color dependent on viewing angle, method of making and use

The invention relates to platelet-shaped interference pigments for effect paints for painting objects of daily use, especially vehicle bodies, with the interference pigments including liquid crystal polymers (LCP) with main and/or side groups--mesogens--which are arranged at least approximately chirally-nematically or the like. In order to be able to paint different colored backgrounds in a covering fashion using the transparent interference pigments, the interference pigments are built up in several layers and also have at least one and preferably two interfering layer(s) of liquid crystal polymers and even of a single, preferably centrally located, light-absorbent layer, with the light-absorbent layer absorbing at least a portion of the visible light spectrum. Advantageously the light-absorbent layer can absorb light in the entire visible light spectrum, in other words appear black. It is also possible for it to be made light-absorbent within those partial areas of the visible light spectrum that lie outside one of the colors of the interference pigments. A method is also disclosed for manufacturing the multilayer interference pigments.

Interference pigments for effect paint, paint manufactured therefrom,

The invention relates to an effect paint for objects to be painted, as well as to a process for making the effect paint, wherein the effect paint comprises pigments. The pigments, produced by fragmenting a wiped and cross-linked film, are added to a starting paint of a paint coat of the object and result in a color effect which depends on the viewing angle, and are also provided with a marking used to recognize and characterize the object.

Marking for objects painted with an effect paint and process for

This invention relates to a marking for painted objects, preferably motor vehicles, as well as to a method for producing the marking. For this purpose, a paint coat, preferably having several paint layers, is applied to the object and the spectral course of a partial spectrum of the electromagnetic spectrum of the paint coat arranged within an electromagnetic measuring range is changed in a targeted manner such that it has narrow-band extremes of at least 5% relative intensity change.

Marking for painted objects and method of applying the marking

The invention relates to a liquid crystalline, photo cross-linkable main-chain polymer used as interferentially effective, chromophoric substance for colored paints, in which the main mesogenic groups are disposed at least approximately in a chiral-nematic manner. An etherified cellulose ether or a mixture of several etherified cellulose ethers is used pursuant to the invention as liquid crystalline main-chain polymer or polymers wherein:

Liquid crystalline cellulose (ether) ethers as interferentially

The invention relates to an effect paint for objects to be painted, as well as to a process for making the effect paint, wherein the effect paint comprises pigments. The pigments, produced by fragmenting a wiped and cross-linked film, are added to a starting paint of a paint coat of the object and result in color effect which depends on the viewing angle, and are also provided with a marking used to recognize and characterize the object.

Growing community of inventors

Hasel, Germany

Fritz Dannenhauer