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:
Apr. 18, 2006
Filed:
May. 27, 2003
Athanassios Tzikas, Pratteln, CH;
Antoine Clément, Basel, CH;
Urs Lauk, Zürich, CH;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
The present invention relates to an azo dye of formula I, II or III: (formula I, II or III); wherein Rand Rare each independently of the other one or more divalent groups selected from alkylene, arylene, aralkylene and cycloalkylene, which may be interrupted by —O—, —S—, —NH—, —NR—, —COO—, —CONH— or —CONR—, wherein Rand Rare alkyl or aryl, X is —O— or —NH—, Ris —CN or —CONH, Ris methyl or trifluoromethyl and R, R, Rand Rare each independently of the others hydrogen, halogen or —CN, to a process for the preparation thereof and to the use thereof in a method of producing mass-colored plastics or polymeric color particles.