申请人:Celotex Corporation
公开号:EP0032838A1
公开(公告)日:1981-07-29
Polyoxyalkylene surfactants for cellular foams can be prepared by reacting by free radical addition polymerization a polyoxyalkylene adduct, a cyclic nitrogenous vinyl monomer and an esterified unsaturated dibasic acid, obtaining a reaction product usable as a surfactant in the formation of phenolic foams, said reaction product comprising a major component useful for said phenolic foams and a minor component useful as a surfactant in the formation of isocyanurate foams, and separating said major and minor components by any conventional method.
用于蜂窝泡沫的聚氧亚烷基表面活性剂的制备方法是:通过自由基加成聚合使聚氧亚烷基加成物、环状含氮乙烯基单体和酯化的不饱和二元酸反应,得到可用作形成酚醛泡沫的表面活性剂的反应产物,所述反应产物包括可用于所述酚醛泡沫的主要成分和可用作形成异氰脲酸酯泡沫的表面活性剂的次要成分,并通过任何常规方法分离所述主要成分和次要成分。