| 摘要 |
PROBLEM TO BE SOLVED: To prevent the impairing of the adhesiveness with the passage of time by shaping a joint boot into a bellows cylindrical body and molding the same with a chloroprene rubber blended matter prepared by adding a specific ratio of an amine antioxidant to chloroprene rubber. SOLUTION: As an amine antioxidant, p-phenyelne diamine, its derivative or the like is used, preferably p-phenylene diamine is used. At most 3 pts.wt. of amine antioxidant is used per 100 pts.wt. of chloroprene rubber. At most 0.8 pts.wt. to 100 pts.wt. of cloroprene rubber, of the wax such as paraffin wax, polyethylene wax and the like is used with the amine antioxidant. The other components excluding them is molded into the bellows cylindrical body by an injection molding method and the like by using a kneader, a Banbury mixer, an inter mix or the like. The constant velocity joint boot is manufactured by adhering and assembling a surface to be adhered to the bellows cylindrical body, and the adhesiveness of the adhesive surface can be kept with the passage of time. |
