| abstract |
(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a blade for an electrophotographic apparatus, in which a mold is less contaminated, and a continuous mold can be repeatedly cast for a long time, and a mold release agent is not attached to a molded article (blade), and the blade Provide a way. SOLUTION: a) Bifunctional polymer polyol having a number average molecular weight of 1,000 to 3,000, and a number average molecular weight of 92. A trifunctional polyol having an average functionality of 2. In a prepolymer prepared by mixing a mixed polyol mixed in a ratio of 02 to 2.20 with a diisocyanate compound in an amount of an isocyanate group content of 5 to 20%, b) O. The H-group / NCO-group equivalent ratio is 0.90 to 1.05, and the amount of the cross-linking agent is 0.9 with respect to 100 parts by weight of the prepolymer. A polyurethane sheet obtained by mixing and reacting with 01 to 1.0 parts by weight of a reaction accelerator is used. |