Styryl-pyrazoline compounds
    1.
    发明授权
    Styryl-pyrazoline compounds 失效
    苯乙烯 - 吡唑啉化合物

    公开(公告)号:US3835126A

    公开(公告)日:1974-09-10

    申请号:US16876871

    申请日:1971-08-03

    Applicant: HOECHST AG

    CPC classification number: C07D231/06 Y10S428/913

    Abstract: 1,5-Diaryl-3-styryl pyrazolines, which are obtained by condensation of a distyryl ketone and an aliphatic 4-hydrazinophenyl sulfone, are useful as optical brighteners, especially in admixture with known 1,3-diaryl pyrazoline brighteners.

    Abstract translation: 通过二苯乙烯基酮和脂族4-肼基苯基砜的缩合获得的1,5-二芳基-3-苯乙烯基吡唑啉可用作荧光增白剂,特别是与已知的1,3-二芳基吡唑啉增白剂混合。

    8.
    发明专利
    未知

    公开(公告)号:BR7206164D0

    公开(公告)日:1973-09-25

    申请号:BR616472

    申请日:1972-09-06

    Applicant: HOECHST AG

    Inventor: MENGLER H MAIN F

    Abstract: Novel pyrazolines are obtained by condensation of substituted propiophenones or vinyl-phenyl-ketones with substituted phenyl hydrazines. The products are useful as optical brighteners of a great variety of the shade of their fluorescence and of an improved fastness to light.

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