申请人:Hickson & Welch Limited
公开号:US03940437A1
公开(公告)日:1976-02-24
Compounds of the general formula R-CH=CH-W-CH=CH-R.sup.1 are described in which R and R.sup.1 are independently phenyl, diphenyl, naphthyl, indyl, tetrahydronaphthyl or acenaphthenyl and W is divalent phenyl, diphenyl, naphthyl, tetrahydronaphthyl or acenaphthenyl group, which groups may be substituted, the compounds containing at least one non-aromatic ring. Such compounds are useful as optical whitening agents, for example in textile material or paper.
描述了一般公式为R-CH=CH-W-CH=CH-R.sup.1的化合物,其中R和R.sup.1独立地为苯基,二苯基,萘基,茚基,四氢萘基或芴基,W为二价的苯基,二苯基,萘基,四氢萘基或芴基基团,这些基团可以被取代,化合物至少含有一个非芳香环。这样的化合物在光学增白剂方面是有用的,例如在纺织材料或纸张中。