Patent ID: 7025898

Claim:
A heating medium composition, comprising: a main ingredient selected from the group consisting of water and a mixture of water and an antifreeze ingredient; a corrosion inhibitor for preventing a metal material from suffering deterioration; a surfactant for preventing a synthetic resin from suffering deterioration, wherein the surfactant is an anionic surfactant in an amount of 0.001 to 0.1% by weight; and an oxidation inhibitor for preventing a synthetic resin from being oxidized, wherein the oxidation inhibitor is at least one member selected from the group consisting of pentaerythrityl tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], octadecyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene, tris(3,5-di-t-butyl-4-hydroxybenzyl)isocyanurate, and tris(2,4-di-t-butylphenyl)phosphite.