申请人:The B.F. GOODRICH Company
公开号:EP0242432A1
公开(公告)日:1987-10-28
A synthetic rubber (SR) tire tread consisting of at least 60 phr styrene-butadiene rubber (SBR) which SR is essentially free of natural rubber (NR), upon vulcanization with sulfur in the presence of a combination of sulfenamide accelerators, provides excellent oxidative stability, resistance to hardening, and flex resistance, despite increasing the level of sulfur to an amount in the range from 2.0-3.0 phr, as long as the total amount of sulfenamide accelerators is less than 2.0 phr and there is more TCS than BTS. The crosslink network generated by the use of TCS in combination with BTS, which combination produces poor oxidation stability in a predominantly NR containing rubber, is not produced in SR.
Cross-reference to related application: This application is a continuation-in-part application of Ser. No. 775,965 filed September 13, 1985.
一种合成橡胶(SR)轮胎胎面由至少 60 phr 的丁苯橡胶(SBR)组成,其中 SR 基本不含天然橡胶(NR),在硫磺与亚磺酰胺促进剂的组合存在下硫化时,只要亚磺酰胺促进剂的总量少于 2.0 phr 且 TCS 多于 BTS,尽管硫磺的含量增加到 2.0-3.0 phr 的范围内,SR 仍能提供出色的氧化稳定性、抗硬化性和耐挠曲性。使用 TCS 与 BTS 结合产生的交联网络不会在 SR 中产生,这种结合在主要含有 NR 的橡胶中会产生较差的氧化稳定性。
与相关申请的对照检索:本申请是 1985 年 9 月 13 日提交的第 775,965 号系列申请的部分延续。