申请人:Ciba-Geigy Corporation
公开号:US04384966A1
公开(公告)日:1983-05-24
Compounds having the formula ##STR1## are described, wherein X is oxygen or sulphur or the moiety X is absent and A and D are as defined in claim 1. Compounds I may be prepared by reacting a compound ##STR2## with diketene in the presence of an agent capable of forming free radicals. They are useful as friction modifiers and/or antiwear additives in lubricating oils or for imparting flame-retardancy to natural or synthetic polymers.
本文描述了具有以下式子的化合物:##STR1## 其中X是氧或硫,或X基团不存在,A和D的定义如权利要求1所述。化合物I可以通过在能够形成自由基的试剂存在下,将化合物##STR2## 与二酮酯反应而制备得到。它们可用作润滑油中的摩擦改性剂和/或抗磨剂,或用于赋予天然或合成聚合物阻燃性。