. "Further, the photocatalyst-containing layer may contain, besides the above surfactant, oligomers or polymers such as polyvinyl alcohol, unsaturated polyester, acrylic resins, polyethylene, diallyl phthalate, ethylenepropylenediene monomers, epoxy resins, phenol resins, polyurethane, melamine resins, polycarbonate, polyvinyl chloride, polyamide, polyimide, styrene-butadiene rubber, chloroprene rubb" . . .