Anti-fogging agent for thermoplastic resin surface and anti-fogging thermoplastic resin sheet

摘要

The present invention provides an anti-fogging agent for the surface of a thermoplastic resin sheet which exerts the following excellent effects: (1) The effect of inhibiting fogging on the surface of the sheet due to the condensation of vapor can last over an extended period of time; (2) Excellent blocking resistance and coating stability make the anti-fogging surface less peelable in the procedure of heating it over a heating plate in a direct heating process so that it is formed into various shapes; and (3) The incorporation of a polyvalent alcohol having wetting properties in a predetermined amount provides excellent antistatic properties. The present invention provides an anti-fogging thermoplastic resin sheet treated with the foregoing anti-fogging agent. A novel anti-fogging agent for the surface of a thermoplastic resin sheet is provided, comprising a polyvalent alcohol incorporated therein in an amount of from 1 to 15 parts by weight based on 100 parts by weight of a mixture of a sucrose aliphatic ester and a coat-forming hydrophilic polymeric compound. A novel anti-fogging thermoplastic resin sheet treated with the foregoing anti-fogging agent is also provided.