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Pigment Preparation with Modified Colophony Resins

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By: KERRY PIANOFORTE

Editor, Coatings World, Coatings World

Pigment Preparation with Modified Colophony Resins
l Patent No. U.S. 6,432,195 B1
Merck Patent Geselleschaft mit beschraenkter Haftung and Lackharzwerke Robert Kraemer GmbH and Co., have been awarded a patent for a non-dusting, homogenous pigment preparation comprising at least one effect pigment, a modified colophony resin having an acid number of 90-200 mg of KOH/g of resin, a hydroxyl group content of 40-180 mg of KOH/g of resin and a softening range of 50-120ËšC and water, a solvent or solvent mixture.

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