| 摘要 |
PURPOSE:To improve flexibility, heat resistance, and resistance against refrigerant by forming a fusion resin insulation layer with a mixture consisting of specific composition of polyether imide resin, urethane prepolymer, and polyhydroxy-polyether resin. CONSTITUTION:The fusion resin insulation layer is formed by application and baking of a coating made by dissolving a mixture into an organic solvent. The mixture is made by adding 20-200 weight parts of polyhydroxypolyether resin into an organic solvent which resin is a block copolymer constituted with 5-40 weight parts of urethane prepolymer and bisphenol A and bisphenol S of average molecular weight of 10000 or more in relation to 100 weight parts of polyether imide. Thus, flexibility, heat resistance and resistance against refrigerant are improved. |
