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. 07, 1990
Filed:
May. 23, 1989
Applicant:
Inventors:
Russell J Schwartz, Cincinnati, OH (US);
Manuel Z Gregorio, Cincinnati, OH (US);
Assignee:
Sun Chemical Corporation, Fort Lee, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
106496 ; 534561 ; 534740 ; 534748 ; 534728 ;
Abstract
Disazo pyrazolone pigments are provided which have improved properties achieved by incorporating certain azomethine compounds. The pigment is prepared by reacting a primary amine terminated alkylene oxide polymer and acetoacetanilide or substituted acetoacetanilide to form an azomethine coupler, and subsequently co-reacting the azomethine coupler and a pyrazolone coupler with tetrazotized 3,3'-dichlorobenzidine or tetrazotized o-dianisidine. The pigment is useful in printing ink, plastics and paints.