Paint colorant product and method

• US 6,491,750 B1
• Filed: 03/30/2000
• Issued: 12/10/2002
• Est. Priority Date: 03/30/2000
• Status: Expired due to Term

• Current Assignee: BEHR Process Corporation (Masco Corporation)
• Original Assignee: BEHR Process Corporation (Masco Corporation)
• Inventors: Pace, James P., Rice, Mary
• Primary Examiner(s): Green, Anthony J.
• Application Number:
  US09/538,658
• Time in Patent Office: 985 Days
• Field of Search: 106/401, 106/456, 106/474
• US Class Current: 106/456
• CPC Class Codes: C09B 67/0034 Mixtures of two or more pigments or dyes of the same type
• CPC Class Codes: C09D 7/80 Processes for incorporating ingredients

Abstract

A neutral paint colorant has a composition comprising approximately 7.0% Color Index Pigment Yellow 42, 2.4% Color Index Pigment Red 101, and 4.0% Color Index Pigment Black 7. A pre-blended mixture of the neutral colorant and a paint base can be blended with a first paint to form a second paint having substantially the same hue and value (lightness) as the first paint, but a lower chroma (brightness).

Claims

1. A paint colorant comprising:

6.3% to 7.7% Color Index Pigment Yellow 42;

2.16% to 2.64% Color Index Pigment Red 101; and

3.6% to 4.4% Color Index Pigment Black 7.

2. The colorant of claim 1, comprising:

7.0% Color Index Pigment Yellow 42;

2.4% Color Index Pigment Red 101; and

4.0% Color Index Pigment Black 7.

3. A method of producing a neutral paint colorant, comprising the steps of:

blending Color Index Pigment Yellow 42, Color Index Pigment Red 101, and Color Index Pigment Black 7 together to form a pigment mixture; and

blending said pigment mixture into a grinding liquid to form a paint colorant;

wherein said paint colorant has a composition of 6.3%-7.7% Color Index Pigment Yellow 42, 2.16%-2.64% Color Index Pigment Red 101, and 3.6%-4.4% Color Index Pigment Black 7.

4. The method of claim 3, wherein said paint colorant has a composition of 7.0% Color Index Pigment Yellow 42, 2.4% Color Index Pigment Red 101, and 4.0% Color Index Pigment Black 7.