Merck Patent Gmbh

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Merck Patent Gesellschaft MIT Beschrankter Haftung

Merck Patent Gesellschaft MIT Beschraenkter Haftung

E. Merck

Gerhard Edler

Manfred Kieser

Reiner Hesse

Hans Pratzer

Helge Bettina Kniess

Klaus Bernhardt

Rainer Linzmeier

Hans-Joachim Keim

Patrick Corneel Mathilde Verschaeren

Tony Leon Filip Daponte

The present invention relates to polymers comprising absorption pigments, which are distinguished by the fact that they have high absorption in the near IR region, and to the use thereof, in particular in thermoforming and in IR light welding.

Polymers having a high infrared absorption capacity

The present invention relates to an intrinsically markable laser pigment in the form of a reducible metal compound in the form of a preparation, and to the use thereof in inorganic systems and in organic polymers, in particular plastics, surface coatings, automobile paints, powder coatings, printing inks, paper coatings and papermaking stocks.

Pigment for laser marking

The invention relates to a laser-markable transparent or translucent plastics which comprise pearlescent pigments in combination with laser-sensitive pigments which themselves do not exhibit any pearlescent effect. The pigment combination considerably improves the scanner legibility of applied laser markings. The invention also relates to a process for preparing the plastics, to the use of the plastics for producing moldings, to moldings produced in this way, and generally to the use of a mixture made from pearlescent pigment and laser-sensitive pigment in laser-markable plastics, for improving the scanner legibility of laser markings applied to the plastics.

Laser-markable plastics and their preparation and use

The invention relates to a method and an installation for processing thermoplastic synthetic materials. According to the invention, the melt strands or the like are displaced in oscillation or pulsation in order to indent or penetrate the joint lines between at least two injection strands.

Method and installation for processing thermoplastic synthetic materials

Composite material for the screening of radiation, comprising a polymer, an additive and the customary stabilizers and processing aids necessary for the particular polymer. The additive is preferably an interference pigment.

Agricultural method and materials for screening solar radiation

Powdery pearlescent pigment compositions comprising individual particles of a flaky pearlescent pigment coated with 1 to 50 weight percent of a solid polymer, optionally containing wetting agents, fillers, additional coloring agents, UV-absorbers or scenting agents, are produced by combining a suspension of a flaky pearlescent pigment with a solution of a polymer, possibly containing other substances, and subsequently depositing polymer on the pigment flakes. The compositions can be used as pigments in cosmetics and can be stored and shipped as dry powders without loss of properties.

Powdery pearlescent pigment compositions

Powdery pearlescent pigment compositions comprising individual particles of a flaky nacreous pigment coated with 1 to 50 weight percent of a solid polymer, optionally containing wetting agents, fillers, additional coloring agents, UV-absorbers or scenting agents, are produced by combining a suspension of a flaky nacreous pigment with a solution of a polymer, possibly containing other substances, and subsequently depositing polymer on the pigment flakes. The compositions can be used as pigments in cosmetics and can be stored and shipped as dry powders without loss of properties.

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Trebur, Germany

Gerhard Edler