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:
Nov. 27, 1979
Filed:
Oct. 03, 1977
Applicant:
Inventors:
George H Robertson, Paisley, GB;
John A Stirling, Glasgow, GB;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C / ;
U.S. Cl.
CPC ...
106309 ; 1063 / ; 1063 / ; 1063 / ; 1063 / ; 260 / ; 260 / ; 260 21 ; 264117 ;
Abstract
A process for the production of a pigment composition in bead form which comprises contacting with agitation, in the presence of an aqueous protective colloid, 1 part of a water insoluble carrier melting below 100.degree. C. and an aqueous dispersion containing 0.25-2,3 parts of a pigment or water insoluble dyestuff at a temperature above the melting point of the carrier and allowing the aqueous phase to become substantially free of pigment or water insoluble dyestuff by its association with the carrier and recovering the resulting pigmented beads which are easily dispersible in polymeric compounds to yield even colorations.