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. 22, 1991
Filed:
Feb. 08, 1990
Applicant:
Inventor:
Byron G Hays, Verona, NJ (US);
Assignee:
BASF Corp., Parsippany, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
106412 ; 106413 ; 106499 ; 106504 ; 252547 ;
Abstract
Dispersions of organic pigments are produced by adding a surfactant to an aqueous slurry of an organic pigment followed by subjecting the slurry to ultrasonic radiation. The surfactant utilized is one or more of the surfactants selected from the group consisting of: various specific acidic or quaternary salts of alkyl substituted propanediamines, and derivatives thereof, as well as a poly(ethyleneoxide) ether of an 18 carbon alcohol having 9 units of ethylene oxide thereon.