Patent ID: 7259122

Claim:
A shelter coating, comprising: polyvinyl alcohol; polyethyleneimine; a photocatalyst capable of generating singlet oxygen, wherein said photocatalyst comprises the structure wherein M is selected from the group consisting of Zn, Si, Ge, Cu, Al, and mixtures thereof, and wherein R10 is selected from the group consisting of SO 3 H, CO 2 H, SO 2 Cl, CHO, and SO 2 —PVOH, and wherein R11 is selected from the group consisting of SO 3 H, CO 2 H, SO 2 Cl, CHO, and SO 2 —PVOH, and wherein R12 is selected from the group consisting of SO 3 H, CO 2 H, SO 2 Cl, CHO, and SO 2 —PVOH, and wherein R13 is selected from the group consisting of SO 3 H, CO 2 H, SO 2 Cl, CHO, and SO 2 —PVOH.