The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 2007
Filed:
Dec. 04, 2003
Klaus Brychcy, Frankfurt am Main, DE;
Joachim Weber, Frankfurt am Main, DE;
Klaus Brychcy, Frankfurt am Main, DE;
Joachim Weber, Frankfurt am Main, DE;
Clariant Produkte (Deutschland) GmbH, Sulzbach, DE;
Abstract
A copper phthalocyanine pigment preparation contains a copper phthalocyanine pigment and at least one pigment dispersant from the group of copper phthalocyanine sulfonic acids and copper phthalocyanine sulfonic acid salts. The inventive pigment preparation is characterized by a) a maximum dynamic viscosity of 180 mPas and/or a maximum thixotropy of 800 Pa/s, the dynamic viscosity and the thixotropy being determined by a rotary viscometer at a temperature of 23° C. in a pigment dispersion comprising 28 percent by weight of dry copper phthalocyanine pigment preparation, 9 percent by weight of nitrocellulose, 62.3 percent by weight of ethanol, and 0.7 percent by weight of ethyl acetate; and b) a color intensity such that a printing ink consisting of an ethanol/nitrocellulose gravure varnish, containing 75 to 65 percent by weight of ethanol and 9 to 11 percent by weight of nitrocellulose at a ratio of 2 to 7.5, and a maximum amount of dry copper phthalocyanine pigment preparation of 6.6 percent by weight relative to the total weight of the printing ink, reaches the ⅓ standard depth of shade of the corresponding tone.