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chemicals for paper and textile materials
chemicals for paper and textile materials
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机译:造纸和纺织材料用化学品
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摘要
Compounds of the general formula R-CH=CH-W-CH=CH-R1 are described in which R and R1 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.
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