申请人:The Goodyear Tire & Rubber Company
公开号:US05069819A1
公开(公告)日:1991-12-03
The present invention relates to thioesters having the structural formula: ##STR1## wherein R.sup.x is selected from the group of formulae consisting of: ##STR2## R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group of radicals consisting of hydrogen or methyl; R.sup.4 and R.sup.5 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: ##STR3## and R.sup.6 is selected from the group of radials 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.
本发明涉及具有结构式的硫酯:其中R.sup.x从以下结构组中选择:R.sup.1、R.sup.2和R.sup.3分别从氢或甲基组成的基团组中选择;R.sup.4和R.sup.5分别从氢、具有1到18个碳原子的烷基、具有6到10个碳原子的芳基、具有7到9个碳原子的芳基烷基,以及式的基团中选择:而R.sup.6从具有1到24个碳原子的烷基、具有6到12个碳原子的芳基和具有7到12个碳原子的芳基烷基组成的基团组中选择。这些硫酯作为传统酚类和胺类抗氧化剂的协同剂特别有用。