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US 12,673,893 B2Granted
Color changing wall compounds and methods of use
Assignee3M Innovative Properties Company
InventorsLan H. Liu, Richard J. Pokorny, Thomas P. Klun, Yong K. Wu, Bathsheba E. F. Chong Conklin
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Abstract
A wall compound for use in all applications and particularly well-suited indicating dryness with a durable, visible change in color.
Claims19
A wall compound comprising:
- a latex resin or resin binder;
- a filler material comprising soda-lime-borosilicate glass bubbles;
- a drying indicator, wherein the drying indicator includes a phthalein-containing pH color change indicator;
- and
- an inhibitor comprising at least one of a barium cation and calcium cation;
- and wherein the compound is alkaline, shelf stable, and demonstrates a human-observable change in color upon drying.
3 more elements
A wall compound comprising:
- an acrylic binder;
- a filler material comprising soda-lime-borosilicate glass bubbles;
- a drying indicator, wherein the drying indicator includes a phthalein-containing pH color change indicator;
- and
- an inhibitor comprising a barium cation;
- and wherein the compound is alkaline and demonstrates a human-observable change in color upon drying.
3 more elements
Dependencies are inferred from the claim text.