James C Delaney

US Patent:

60367644, Mar 14, 2000

Filed:

Jun 11, 1998

Appl. No.:

9/095837

Inventors:

Kim Diane Gooding - Wilmington DE
James Martin Delaney - Wilmington DE

Assignee:

Ciba Specialty Chemicals Corporation - Tarrytown NY

International Classification:

C09D 500

US Classification:

106440

Abstract:

The present invention relates to a yellow pigment blend containing a) a yellow nickel titanate pigment, b) a yellow bismuth vanadate, and c) a yellow isoindolinone pigment, wherein a hardened pigmented article resulting from the blend is characterized according to the CIE tristimulus values system by having a value for Y of at least about 36, a value for x between 0. 48 and 0. 51 and a value for y between 0. 44 and 0. 47. The yellow pigment blend has very good heat resistance for hot melt application and very good lightfastness for long term durability.

US Patent:

58696253, Feb 9, 1999

Filed:

Apr 23, 1997

Appl. No.:

8/842294

Inventors:

Edward Ephraim Jaffe - Wilmington DE
James Martin Delaney - Wilmington DE

Assignee:

Ciba Specialty Chemical Corporation - Tarrytown NY

International Classification:

C09D 500
C09D 712

US Classification:

534DIG1

Abstract:

The present invention relates to colorant blends comprising (a) an azo component, which is a salt of a salt-forming azo pigment of the formula A--N. dbd. N--B, wherein A is the residue of a diazo component and B is the residue of a coupling component; and (b) a second component, which is an opaque 1,4-diketo-3,6-diaryl-pyrrolo�3,4-c!pyrrole pigment. The colorant blends are especially useful in coating compositions, such as paints.