申请人:Evonik Operations GmbH
公开号:US10731097B2
公开(公告)日:2020-08-04
Polyalkyl(meth)acrylate based comb polymers with weight-average molecular weights of 700,000 g/mol or greater and number-average molecular weights of 130,000 g/mol or greater can be used to improve the high temperature-high shear performance of lubricant compositions, especially of engine oil (EO) compositions. These polymers can be obtained in a reaction mixture comprising monomers, a dilution oil, and an initiator. The resulting lubricant compositions can have improved kinematic viscosity and high temperature high shear performance.
以聚烷基(甲基)丙烯酸酯为基础、重量平均分子量大于或等于 700,000 克/摩尔、数量平均分子量大于或等于 130,000 克/摩尔的组合聚合物可用于改善润滑油组合物,尤其是发动机油(EO)组合物的高温-高剪切性能。这些聚合物可在由单体、稀释油和引发剂组成的反应混合物中获得。由此产生的润滑油组合物可具有更好的运动粘度和高温高剪切性能。