Colored masking liquid composition and method of using
Assignee3M Innovative Properties Company
InventorsKin-Chau Chan, Gary N. Brotherton, Colin D. Sinclair, Jeffrey J. Schwab, Craig G. Appleby, Anna B. Baker
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Abstract
The present invention provides a colored masking liquid composition, and a method of masking a paint spray booth, wherein the composition comprises one or more polymers dispersed or dissolved in water, a base in a sufficient amount to provide a pH greater than 7, and a pH indicator that is colored at the pH of the masking liquid composition. Applying the colored masking liquid composition to the interior surface of a spray booth and allowing to dry results in a colorless mask.
Claims21
A colored masking liquid composition comprising:
- one or more polymers dispersed or dissolved in water;
- a base in a sufficient amount to provide a pH greater than 7;
- a pH indicator that is colored at the pH of the masking liquid composition.
A method of masking the interior surface of a spray booth, the method comprising:
- providing a colored masking liquid comprising:
- one or more polymers dispersed or dissolved in water;
- a base in amount sufficient to such that the pH of the masking liquid is greater than 7;
- a pH indicator that is colored at the pH of the masking liquid;
- applying the colored masking liquid to at least part of an interior surface of the spray booth;
- allowing the colored masking liquid to dry and form a mask;
- and whereby
- said mask is colorless.
A kit of parts for making a colored masking liquid, the kit comprising:
- a separate first part comprising a masking liquid comprising one or more polymers dispersed or dissolved in water;
- a separate second part comprising a base;
- wherein
- either or both said separate first and second parts comprise a pH indicator, said pH indicator is colored at a pH greater than 7;
- whereby
- upon mixing said separate first and second parts forms a colored masking liquid.
Dependencies are inferred from the claim text.