Patent ID: 8021545

Claim:
A solution for forming a film or monomolecular layer of biodegradable film over a body of water including the surface of a swimming pool, hot tub, spa or other water pond to prevent evaporation, retain heat, and maintain the chemical balance of the swimming pool, hot tub, spa or water pond, the solution comprising: water, deionized water, or filtered water in the weight percent range of from 92.0% to 99.0%; propylene glycol is present in a maximum of 2.0%; methyl paraben is present in a maximum of 0.15%; poly-oxy-ethylene (20) sorbitan monolaurate is present in a range of from 0.10% to 4.0%; cetyl alcohol is present in a range of from 1.0% to 8.0%; sorbitan monopalmitate is present in a range of from 0.10% to 4.0%; poly-oxy-ethylene (20 cetyl ether) is present in a range of from 0.10% to 4.0%; an antifoaming agent is present in a range of from 0.10% to 4.0%; and propyl paraben is present in a maximum of from 0.05%.