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. 25, 1980
Filed:
Jun. 16, 1978
Applicant:
Inventors:
Ian R Wheeler, Houston, GB;
George H Robertson, Paisley, GB;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09C / ; C09C / ;
U.S. Cl.
CPC ...
106309 ; 1063 / ; 1063 / ; 1063 / ; 1063 / ; 106 22 ; 106 23 ; 260 / ; 260 24 ; 260 / ; 260 / ;
Abstract
A process for the manufacture of substantially dust free meterable and readily dispersible beads of a pigment composition which comprises contacting with agitation a suspension of a finely divided pigment or pigment composition in a mixture of water and an oxygenated aliphatic hydrocarbon solvent containing from 1 to 5 carbon atoms and having appreciable solubility in water, together with a solution of a carrier which is substantially water insoluble and soluble in the respective solvent at reflux temperature and then distilling off the solvent and recovering the resultant beads by filtration from the aqueous phase.