申请人:Hickson & Welch Limited
公开号:US03933842A1
公开(公告)日:1976-01-20
Substituted coumarins are described having at the 7-position the group RO- where R is a substituted or unsubstituted alkyl, cycloalkyl or aralkyl group, and at the 3-position a 1,2,4- or 1,3,4-oxadiazolyl group which possesses a substituted or unsubstituted alkyl or aryl substituent. The compounds are useful as optical whitening agents in the treatment of textile fibres.
描述了替代香豆素,在7-位具有RO-基团,其中R是取代或未取代的烷基、环烷基或芳基基团,并且在3-位具有1,2,4-或1,3,4-噁二唑基团,该基团带有取代或未取代的烷基或芳基取代物。这些化合物在处理纺织纤维时作为光学增白剂是有用的。