11-02-2016 дата публикации
Номер: US20160040029A1
Принадлежит:
Coating compositions that provide hydrophilic and self-cleaning properties upon exposure to UV or visible light are disclosed. Coatings can include derivatives of coumarates and/or azobenzene compounds. When exposed to UV or visible light, these compounds isomerize to cis-configuration which are hydrophilic in nature as compared to when in their hydrophobic trans-state. 2. The coating of claim 1 , wherein X is —CH═CH—C(═O)—O—(CH)—O—C(═O)—CH═CH—; each R is claim 1 , independently claim 1 , —CH—CH— claim 1 , —(CH)—NH—(CH)— claim 1 , —(CH)—NH—(CH)—NH—(CH)— claim 1 , or —CH—(NH—CH)—; and each Z is claim 1 , independently claim 1 , H claim 1 , alkyl claim 1 , aryl claim 1 , alkoxy claim 1 , nitro claim 1 , or cyano.3. The coating of claim 1 , wherein X is —N═N—; each R is claim 1 , independently claim 1 , —CH—CH— claim 1 , —(CH)—NH—(CH)— claim 1 , —(CH)—NH—(CH)—NH—(CH)— claim 1 , or —CH—(NH—CH)—; and each Z is claim 1 , independently claim 1 , H claim 1 , alkyl claim 1 , aryl claim 1 , alkoxy claim 1 , nitro claim 1 , or cyano.4. The coating of claim 1 , wherein X is —CH═CH—C(═O)—O—(CH)—O—C(═O)—CH═CH—; each R is claim 1 , independently claim 1 , —(CH)—NH—(CH)— or —(CH)—NH—(CH)—NH—(CH)—; and each Z is claim 1 , independently claim 1 , H claim 1 , alkyl claim 1 , aryl claim 1 , or alkoxy.5. The coating of claim 1 , wherein X is —N═N—; each R is claim 1 , independently claim 1 , —(CH)—NH—(CH)— or —(CH)—NH—(CH)—NH—(CH)—; and each Z is claim 1 , independently claim 1 , H claim 1 , alkyl claim 1 , aryl claim 1 , or alkoxy.6. The coating of claim 1 , further comprising a solvent claim 1 , a pigment claim 1 , a rheology modifier claim 1 , a plasticizer claim 1 , or any combination thereof.7. The coating of claim 1 , further comprising a pigment comprising titanium dioxide claim 1 , zinc oxide claim 1 , tin oxide claim 1 , tungsten oxide claim 1 , or any combination thereof.8. The coating of claim 1 , wherein the coating is a latex emulsion claim 1 , a non-aqueous dispersion ...
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