| 摘要 |
PURPOSE:A thermal energy storing agent compsn. having excellent durability and keeping high thermal energy storage characteristics for a long period, which is prepd. by incorporating sodium sulfate, a nucleator, a water-soluble resin, an unsaturated polyester resin and a surfactant of HLB not less than a specified value. CONSTITUTION:A thermal energy storage agent compsn. prepd. by incorporating sodium sulfate, a nucleator such as borax, water, a hydrophilic group-contg. water-soluble resin such as polysodium acrylate, an unsaturated polyester resin such as Ester-R280 (trade name, manufactured by Mitsui Toatsu K.K.) and a surfactant of HLB>=8.0 such as polyoxyethylene nonylphenyl ether of HLB=14.0. The thermal energy storage compsn. having excellent durability and keeping high performance of latent heat near the theoretical value in prolonged use of repeated heating and cooling, is obtd. because it is possible to uniformly disperse and fix the thermal energy storage agent primarily composed of Glauber's salt by dispersing them in a polyester resin in the presence of a surfactant of HLB>=8.0.
|
