es a mixture of photocatalyst particles having a photocatalytic function with cement as a less degradative adhesive adhered on a substrate.US6498000Jun 27, 2001Dec 24, 2002Ishihara Sangyo Kaisha, Ltd.Substrate having particles of a photocatalyst such as tio2, adhered on via a less degradative adhesive such as a copolymer of a vinyl ether and a fluoroolefin or a siliconeUS7168947 *Jul 6, 2004Jan 30