Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Reexamination Certificate
2006-09-05
2006-09-05
Green, Anthony J. (Department: 1755)
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
C106S031770, C106S497000, C524S090000, C544S049000, C544S056000
Reexamination Certificate
active
07101428
ABSTRACT:
The invention is directed to a method or use of 2,9-dichloro-quinacridone as a crystal phase inhibitor during the beta-quinacridone or gamma-quinacridone crude pigment particle size reduction processes. 2,9-dichloroquinacridone is added to the milling composition of the crude gamma or crude beta quinacridone.
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W. Herbst et al., Industrial Organic Pigments, Production, Properties, Applications, 2ndCompletely Revised Ed., (1997), p. 464, no month.
R. B. McKay, Control of the Application Performance of Classical Organic Pigments, JOCCA, (1989), pp. 89-93, no month.
Campbell Colin
Carter Rhonda
He Yingxia
Schilling Gordian
Ciba Specialty Chemicals Corporation
Green Anthony J.
Loggins Shiela A.
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