会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明申请
    • PYRIMIDINE DERIVATIVES AS HARDNESS STABILIZERS
    • 哌嗪衍生物作为硬度稳定剂
    • WO0170870A3
    • 2002-01-03
    • PCT/US0109156
    • 2001-03-21
    • FLEXSYS AMERICA LPLIN HORNG JAUDATTA RABINDRA NATHMAENDER OTTO WILLIAM
    • LIN HORNG-JAUDATTA RABINDRA NATHMAENDER OTTO WILLIAM
    • B60C1/00C07D417/12C08K5/36C08K5/37C08K5/378C08K5/42C08K5/43C08K5/44C08K5/47C08L7/00C08L9/06C08L21/00
    • C08K5/44C08K5/37C08K5/378C08K5/42C08K5/47C08L21/00
    • The invention comprises 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 and a hardness stabilization agent comprising a pyrimidine derivative of formula (I), where X=H, R1 through R4, NR3R4, OR5, SR5, SO2R6, M, (SO3)zM (M=metal ion), and n and z can be the same or different and 1, 2 or 3, depending on whether the respective valence of X and M is 1, 2 or 3, R1 through R4 are the same or different and selected from the group consisting of the substituents H, halogen, OH, NH2, alkyl, cycloalkyl, aryl, alkylaryl, aralkyl, with each of such substituents optionally having additional functional groups selected form the group consisting of NH2, OH, substituted amino, substituted hydroxyl, halogen, and carbonyl containing group, R3 and R4 may be in the same constituent together with N to form a heterocyclic group, R5 is the same as any of R1 through R4, or a radical derived from a carbon based heterocyclic group containing at least one of S or N, or both S and N, R6 is selected from the same as any of R1 through R4, OH, OM, O R5, NH2 NR3R4 the respective amount of accelerating agent and hardness stabilization agent being effective to not substantially inhibit vulcanization and to stabilize the hardness properties of said rubber upon vulcanization, the amount of accelerating agent in said composition being greater than about 0.6 phr when said rubber is SBR and at least about 0.5 phr when said rubber is natural rubber, and the amount of hardness stabilization agent being at least about 0.5 phr. The invention also comprises a method of improving the hardness stabilization of a composition comprising a sulfur vulcanizable rubber by adding the above accelerators and pyrimidine derivative to the composition.
    • 本发明包括可硫化组合物,其包含硫可硫化橡胶,硫硫化剂,选自非噻唑次磺酰胺促进剂的促进剂和包含式(I)的嘧啶衍生物的硬化稳定剂,其中X = H ,R 1至R 4,NR 3 R 4,OR 5,SR 5,SO 2 R 6,M,(SO 3)z M(M =金属离子),并且n和z可以相同或不同且为1,2或3,这取决于 X和M是1,2或3,R 1至R 4相同或不同,并且选自取代基H,卤素,OH,NH 2,烷基,环烷基,芳基,烷基芳基,芳烷基,各取代基 任选地具有选自由NH 2,OH,取代的氨基,取代的羟基,卤素和含羰基的基团组成的组的另外的官能团,R 3和R 4可以与N一起形成相同的组分以形成杂环基,R5是相同的 作为R1到R中的任一个 4或衍生自含有S或N中的至少一种或S和N两者的碳基杂环基的基团,R 6选自与R 1至R 4,OH,OM,O R 5,NH 2 NR 3 R 4中的任一个相同的基团 相应量的促进剂和硬度稳定剂有效地基本不抑制硫化并稳定硫化时所述橡胶的硬度性质,当所述橡胶为SBR时,所述组合物中的促进剂的量大于约0.6phr,并且至少 当所述橡胶是天然橡胶时,约0.5phr,并且硬度稳定剂的量为至少约0.5phr。 本发明还包括通过将上述加速剂和嘧啶衍生物加入到组合物中来改善包含硫可硫化橡胶的组合物的硬度稳定性的方法。