Patent ID: 7265176

Claim:
A composition comprising or produced from nano-TiO 2 , a first polymer, and optionally a second polymer wherein the first polymer is polyvinyl butyral, an ethylene copolymer, an ionomer of the ethylene copolymer, or combinations of two or more thereof; the nano-TiO 2 is coated with a silicon compound, a metal oxide, and optionally an acid or its derivative; the acid is adipic acid, terephthalic acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, salicylic acid, or combinations of two or more thereof, the derivative is ester or salt of the acid; the silicon compound is silicate, organoalkoxysilane, aminosilane, epoxysilane, mercaptosilane, SiO 2 , or combinations of two or more thereof; the metal oxide includes Al 2 O 3 , ZrO 2 , or combinations thereof; the ethylene copolymer comprises repeat units derived from ethylene and a polar monomer; the polar monomer is acrylic acid, methacrylic acid, alkyl ester of acrylic acid, alkyl ester of methacrylic acid, salt of acrylic acid, salt of methacrylic acid, or combinations of two or more thereof; the particle size of the nano-TiO 2 is ≦100 nm; and, provided that, if the first polymer is polyvinyl butyral, nano-TiO 2 is present in the composition from about 0.5 to about 10 weight % of the composition.