申请人:THE GOODYEAR TIRE & RUBBER COMPANY
公开号:EP0475215A1
公开(公告)日:1992-03-18
The present invention relates to thioesters having the structural formula:
wherein Rx is selected from the group of formulae consisting of:
R¹, R² and R³ are independently selected from the group of radicals consisting of hydrogen or methyl; R⁴ and R⁵ are independently selected from the group of radicals consisting of hydrogen, alkyls having 1 to 18 carbon atoms, aryls having 6 to 10 carbon atoms, aralkyls having 7 to 9 carbon atoms, and radicals of the formula:
and R⁶ is selected from the group of radicals consisting of alkyls having 1 to 24 carbon atoms, aryls having 6 to 12 carbon atoms and aralkyls having 7 to 12 carbon atoms.
These thioesters are particularly useful as a synergist for conventional phenolic and amine antioxidants.
本发明涉及结构式如下的硫酯:
其中 Rx 选自下列式组
R¹、R² 和 R³ 分别独立地选自氢或甲基组成的基团组;R⁴ 和 R⁵ 分别独立地选自氢、具有 1 至 18 个碳原子的烷基、具有 6 至 10 个碳原子的芳基、具有 7 至 9 个碳原子的烷基和式中的基团组成的基团组:
和 R⁶ 选自由具有 1 至 24 个碳原子的烷基、具有 6 至 12 个碳原子的芳基和具有 7 至 12 个碳原子的烷基组成的基团组。
这些硫代酯类特别适用于作为传统酚类和胺类抗氧化剂的增效剂。