发明名称 |
Utilisation d'un mélange de plusieurs composés pour l'avivage optique de fibres de polyoléfine |
摘要 |
A mixture comprising 2 to 6 compounds of compounds of the formula <FORM:1065516/C2/1> may be obtained by mixing the individual components or by condensing 1 mol. of stilbene -4,41-dicarboxylic acid in the presence of phosphorus trichloride or another acid halogenating agent with 2 mols. in total based on said acid, of 2 or 3 compounds of the formula <FORM:1065516/C2/2> wherein R, R1 and R2 are hydrogen or C1- 4 alkyl groups. In the examples, mixtures are prepared in which the radicals R1 and R2 are hydrogen, methyl, ethyl and tert-butyl groups.ALSO:An optical brightening agent for polyolefin fibres comprises a mixture of 2 to 6 compounds of the general formula: <FORM:1065516/D1-D2/1> wherein R1 and R2 are hydrogen or C1-4 alkyl groups. The mixture may be employed in an aqueous bath in a finely dispersed state in the presence of dispersing agents. The mixture may be employed in an amount of 0.005% to 0.5% based on the weight of the fibres. The fibre may be a polypropylene fibre which may be modified with a metallic organic or inorganic compound, e.g. aluminium stearate. |
申请公布号 |
CH447097(A) |
申请公布日期 |
1967.06.15 |
申请号 |
CH19650003502 |
申请日期 |
1965.03.12 |
申请人 |
NIPPON KAYAKU KABUSHIKI KAISHA |
发明人 |
ONO,NOBUJIRO;SUMITANI,MITSUKUNI;SERIZAWA,SEIJI |
分类号 |
C07D263/62;C07D263/64;D06L3/12 |
主分类号 |
C07D263/62 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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