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US 9,428,666 B2Granted
Hydrophilic self-cleaning coating compositions
AssigneeEmpire Technology Development LLC
InventorsGeorgius Abidal Adam, Angele Sjong, William Brenden Carlson, Feng Wan, Timothy Martin Londergan
Life of this patent
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Abstract
Hydrophilic, self-cleaning coating compositions and methods to make and use the compositions are disclosed. The coatings comprise perlite and/or expanded perlite that are activated with hydrophilic agents. The perlites when incorporated in paints provide hydrophilic, self-cleaning and/or biocidal property to the coating.
Claims30
A coating composition, comprising:
- at least one polymeric binder;
- an activated perlite or an activated expanded perlite dispersed in the at least one polymeric binder;
- and
- a hydrophilic activating agent on the activated perlite or activated expanded perlite.
1 more element
A method of coating a substrate, the method comprising:
- applying a coating composition to the substrate, wherein the coating composition includes:
- at least one polymeric binder;
- an activated perlite or an activated expanded perlite dispersed in the at least one polymeric binder;
- and
- a hydrophilic activating agent on the activated perlite or activated expanded perlite.
2 more elements
A coated article, comprising:
- a substrate;
- and
- a coating composition on the substrate, wherein the coating composition includes:
- at least one polymeric binder;
- an activated perlite or an activated expanded perlite dispersed in the at least one polymeric binder;
- and
- a hydrophilic activating agent on the activated perlite or activated expanded perlite.
4 more elements
A method of making a coating composition, the method comprising:
- contacting a perlite or an expanded perlite with a hydrophilic activating agent to form an activated perlite or an activated expanded perlite;
- and
- adding the activated perlite or the activated expanded perlite to a composition, wherein the composition includes at least one polymeric binder and a liquid medium.
Dependencies are inferred from the claim text.