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:
Oct. 17, 2006
Filed:
Nov. 12, 2004
Applicants:
Yingxia He, Wilmington, DE (US);
Colin D. Campbell, Claymont, DE (US);
Inventors:
Yingxia He, Wilmington, DE (US);
Colin D. Campbell, Claymont, DE (US);
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 48/00 (2006.01); C09B 67/20 (2006.01); C09B 67/52 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is directed to an aqueous process for reducing particle size of organic pigments by milling the crude pigment in the presence of a water soluble styrene copolymer dispersant, optionally a defoamer, optionally an additive, and greater than about 10 wt. % water, and isolating the organic pigment.