申请人:Sterling Drug Inc.
公开号:US03974144A1
公开(公告)日:1976-08-10
Benzofurans, benzothiophenes, and naphthofurans which are substituted by carboxystyrylphenyl groups and their corresponding esters and amides are optical brightening agents useful for whitening and brightening natural and synthetic fibers, papers, resins and the like. The compounds are conveniently prepared by interacting benzofurans, benzothiophenes or naphthofurans, which are substituted by a p-tolyl group, with an aromatic aldehyde or preferably the anil derivative thereof.
苯并呋喃、苯并噻吩和萘并呋喃,它们被羧基苯乙烯基苯基取代,以及它们对应的酯和酰胺是一种光学增白剂,可用于美白和增亮天然和合成纤维、纸张、树脂等。这些化合物可通过苯并呋喃、苯并噻吩或萘并呋喃与芳香醛或最好是其苯胺衍生物相互作用方便地制备。