申请人:Hoechst Aktiengesellschaft
公开号:US04093592A1
公开(公告)日:1978-06-06
2,2-BIS-(ALKYL-4'-HYDROXYPHENYL)-CYCLOALKYL-(ALKYL) CARBONIC ACID ESTERS ARE PREPARED BY CONDENSATION OF ALKYL PHENOLS WITH 2-KETO-CYCLOALKYL CARBONIC ACID ESTERS IN THE PRESENCE OF ACIDIC CATALYSTS AND OPTIONALLY OF MERCAPTO DERIVATIVES. The product are useful for the stabilization of polymers against the decomposition by light and heat.
2,2-双(烷基-4'-羟基苯基)-环烷基-(烷基)羧酸酯是通过在酸性催化剂和可选的巯基衍生物存在下,将烷基酚与2-酮基环烷基羧酸酯缩合制备的。该产品可用于稳定聚合物免受光和热分解的影响。