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:
Mar. 18, 1986
Filed:
Oct. 31, 1984
Vincent S Oliver, West Orange, NJ (US);
Walter Tames, Hillside, NJ (US);
Helmuth H Prochaska, Wayne, NJ (US);
Karl-Heinz Wieser, Wayne, NJ (US);
Mobay Chemical Corporation, Pittsburgh, PA (US);
Abstract
The present disclosure is concerned with the preparation of permanent pigments from selected cationic dyes by precipitation from aqueous solution with complex heteropoly acids in the presence of selected amine color enhancing agents. Typical of the dyes is Color Index Basic Red 12, typical of the complex heteropoly acid is silicomolybdic acid and typical of the amine color enhancing agents are abietyl amine, cetyl pyridinium chloride and benzyl tri-n-alkyl ammonium chlorides. The pigments are disclosed to have superior cleanliness, brightness and transparency compared to the same pigments prepared without the amine color enhancing agent. These pigments are disclosed to have particular utility in printing inks such as components of process red for four color printing.