发明授权
- 专利标题： Pyrimidine derivatives as hardness stabilizers
- 专利标题（中）： 嘧啶衍生物作为硬度稳定剂
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申请号： US09814342申请日： 2001-03-21
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公开(公告)号： US06646029B1公开(公告)日： 2003-11-11
- 发明人: Horng-Jau Lin , Rabindra Nath Datta , Otto William Maender
- 申请人： Horng-Jau Lin , Rabindra Nath Datta , Otto William Maender
- 主分类号： C08J545
- IPC分类号： C08J545
摘要：
A vulcanizable composition comprising a sulfur vulcanizable rubber, a sulfur vulcanizing agent, an accelerating agent selected from the group consisting of non-thiazole sulfenamide accelerators in an amount effective to not substantially inhibit vulcanization and an amount effective to improve the hardness stabilization of said rubber upon vulcanization of a hardness stabilization agent comprising a pyrimidine derivative. A method of improving the hardness stabilization of a composition comprising a sulfur vulcanizable rubber by adding to said composition the accelerators and pyrimidine derivative.
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