Paint colorant product and method

• US 20030094119A1
• Filed: 11/14/2002
• Published: 05/22/2003
• Est. Priority Date: 03/30/2000
• Status: Active Grant

• Current Assignee: James P. Pace, Mary R. Rice
• Original Assignee: James P. Pace, Mary R. Rice
• Inventors: Pace, James P., Rice, Mary R.
• Granted Patent: US 6,712,899 B2
• Time in Patent Office: Days
• 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 a mixture of pigments blended with a grinding liquid, said colorant being configured to be added to a first paint base to form a first paint, said first paint having the property that when said first paint is added to a second paint a third paint is formed, said first, second, and third paints respectively having first, second, and third paint colors, wherein a chroma of said third paint color is less than a chroma of said second paint color, a hue and a value of said third paint color being substantially the same, respectively, as a hue and a value of said second paint color.

2. The colorant of claim 1, wherein said pigments comprise Color Index Pigment Yellow 42, Color Index Pigment Red 101, and Color Index Black 7.

3. The colorant of claim 1, wherein said second paint comprises a mixture of colorants with a second paint base, said first and second paint bases being substantially materially identical.

4. The colorant of claim 1, 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.

5. 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.

6. A paint colorant comprising a mixture of pigments blended with a grinding liquid, said colorant being configured to be added to a first paint having a first paint color to form a second paint having a second paint color, wherein a chroma of said second paint color is less than a chroma of said first paint color, a hue of said second paint color being substantially the same as a hue of said first paint color.

7. The colorant of claim 6, wherein said pigments comprise Color Index Pigment Yellow 42, Color Index Pigment Red 101, and Color Index Black 7.

8. The colorant of claim 6, 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.

9. The colorant of claim 8, comprising:

7.0% Color Index Pigment Yellow 42;

2.4% Color Index Pigment Red 101; and

4.0% Color Index Pigment Black 7.

10. A method of creating a paint, comprising the steps of:

selecting a source paint comprising a mixture of paint colorants with a first paint base, said source paint having a source paint color;

blending a neutral paint colorant with a second paint base to form a neutral paint, said neutral 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, said first and second paint bases being substantially materially identical; and

blending said neutral paint with said source paint to form an output paint having an output paint color;

wherein a hue and a value of said output paint color are substantially equal, respectively, to a hue and a value of said source paint color, a chroma of said output paint color being less than a chroma of said source paint color.

11. The method of claim 10, wherein said neutral paint comprises 7.0% Color Index Pigment Yellow 42, 2.4% Color Index Pigment Red 101, and 4.0% Color Index Pigment Black 7.

12. The method of claim 10, wherein said step of blending said neutral paint colorant with said second paint base comprises controlling the amount of said neutral paint colorant which is blended with said second paint base so that said neutral paint has a value substantially equal to the value of said source paint.

13. A method of creating a paint, comprising the steps of:

selecting a source paint comprising a mixture of paint colorants with a first paint base, said source paint having a source paint color;

blending a neutral paint colorant with a second paint base to form a neutral paint, said neutral colorant comprising Color Index Pigment Yellow 42, Color Index Pigment Red 101, and Color Index Pigment Black 7, said first and second paint bases being substantially materially identical; and

blending said neutral paint with said source paint to form an output paint having an output paint color;

wherein a hue and a value of said output paint color are substantially equal, respectively, to a hue and a value of said source paint color, a chroma of said output paint color being less than a chroma of said source paint color.

14. A method of developing a composition of a neutral colorant, the neutral colorant comprising a mixture of a first colorant and offsetting colorants blended together in fixed proportions, each of the first colorant and the offsetting colorants comprising a pigment mixed with a grinding liquid, said fixed proportions comprising a proportion of the first colorant and proportions of each of the offsetting colorants, the method comprising:

a) blending a quantity of the first colorant with a paint base to form a paint having a color;

b) if the chroma of the color of the paint is not substantially equal to zero, blending quantities of one or more of the offsetting colorants with the paint until the chroma of the color of the paint is substantially equal to zero;

c) blending one of an additional quantity of the first colorant and an additional quantity of the paint base with the paint to change the value of the paint color; and

d) if the chroma of the color of the paint is not substantially equal to zero, blending quantities of one or more of the offsetting colorants with the paint until the chroma of the color of the paint is substantially equal to zero;

wherein a total quantity of added colorants is defined by the total quantities of the first and offsetting colorants added to the paint in steps (a)-(d), the proportion of the first colorant comprising a total quantity of the first colorant added to the paint in steps (a) and (c) divided by the total quantity of added colorants, the proportion of a given one of the offsetting colorants comprising a total quantity of the given one offsetting colorant added to the paint in steps (b) and (d) divided by the total quantity of added colorants.

15. The method of claim 14, wherein steps (c) and (d) are repeated at least three times.

16. The method of claim 14, wherein said first colorant comprises Color Index Pigment Black 7 mixed with a grinding liquid, said offsetting colorants comprising Color Index Pigments Red 101 and Yellow 42 mixed with grinding liquids.

17. A method of developing a composition of a neutral colorant, the neutral colorant comprising a mixture of a first colorant and one or more offsetting colorants blended together in fixed proportions, each of the first colorant and the one or more offsetting colorants comprising a pigment mixed with a grinding liquid, said fixed proportions comprising a proportion of the first colorant and proportions of each of the one or more offsetting colorants, the method comprising:

a) blending a quantity of the first colorant with a paint base to form a paint having a color;

b) if the chroma of the color of the paint is not substantially equal to zero, blending quantities of one or more of the one or more offsetting colorants with the paint until the chroma of the color of the paint is substantially equal to zero;

c) blending one of an additional quantity of the first colorant and an additional quantity of the paint base with the paint to change the value of the paint color; and

d) if the chroma of the color of the paint is not substantially equal to zero, blending quantities of one or more of the one or more offsetting colorants with the paint until the chroma of the color of the paint is substantially equal to zero;

wherein a total quantity of added colorants is defined by the total quantities of the first colorant and the one or more offsetting colorants added to the paint in steps (a)-(d), the proportion of the first colorant comprising a total quantity of the first colorant added to the paint in steps (a) and (c) divided by the total quantity of added colorants, the proportion of a given one of the one or more offsetting colorants comprising a total quantity of the given one offsetting colorant added to the paint in steps (b) and (d) divided by the total quantity of added colorants.