| 摘要 |
PROBLEM TO BE SOLVED: To improve compression permanent set characteristics and an image after a blade is pressed and left by forming a base rubber layer using a specific diene polymer composition. SOLUTION: A base rubber layer is formed by diene polymer composition containing diene polymer, hydrosilyl hardening agent from a formula I to III (in the formula I, R1 expresses the carbon number 2-20, R2 expresses a hydrocarbon group of the carbon number 1-20, R3 expresses hydrogen atoms or a methyl group, m, n, and p express 2 or more, positive number of 1 or more, and 0 or positive number respectively, and 5<=m+n+p<=200, in the formula II, R1 expresses the carbon number 2-20, R4 expresses a hydrocarbon group of the carbon number 1-20, R3 expresses hydrogen atoms or a methyl group, m, p, and q express 0 or a positive number, and n expresses a positive number of 1 or more, and in the formula III, R1 expresses the carbon number 2-20, R2 expresses a hydrocarbon group of the carbon number 1-20, m, n, and p express 2 or more, a positive number of 1 or more, and O or a positive number respectively, and 3<=m+n+p<=50), and compound expressed by a general formula X-A-X (A is bivalent organic group and X is alkenyl group). |
