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    Derivatives of 4-vinyl-4'-alpha-hydroxyethyl-biphenyl
    74.
    发明公开
    Derivatives of 4-vinyl-4'-alpha-hydroxyethyl-biphenyl 失效
    衍生von 4-Vinyl-4'-α-羟乙基 - 联苯

    公开(公告)号：EP0849246A2

    公开(公告)日：1998-06-24

    申请号：EP97810972.6

    申请日：1997-12-11

    申请人： Ciba Specialty Chemicals Holding Inc.

    发明人： Siebenhaar, Bernd ,  Casagrande, Bruno ,  Eliu, Victor

    IPC分类号： C07C33/28 ,  C07C15/50 ,  C07C1/24 ,  C07C309/32

    CPC分类号： C07C309/32 ,  C07C1/24 ,  C07C15/50 ,  C07C29/60 ,  C07C33/28 ,  C07C303/22 ,  C07C2531/025

    摘要： The present invention provides compounds having the formula:
    in which R is hydrogen or C 1 -C 4 alkyl, preferably hydrogen and Y is hydrogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, CF 3 , halogen (F, Cl, Br or I) or SO 3 M in which M is H, Na, K, Ca, Mg, ammonium, mono-, di-, tri- or tetra-C 1 -C 4 alkylammonium, mono-, di- or tri-hydroxyalkylammonium or ammonium that is di- or tri-substituted with a mixture of C 1 -C 4 alkyl and C 1 -C 4 hydroxyalkyl groups; a process for their production by partial dehydration of compounds having the formula:
    ; and their use as intermediates in the production of asymmetric or symmetric fluorescent whitening agents.

    摘要翻译： 本发明提供具有下式的化合物：其中R是氢或C 1 -C 4烷基，优选氢，Y是氢，C 1 -C 4烷基，C 1 -C 4烷氧基，CF 3，卤素（F，Cl，Br或I）或 其中M是H，Na，K，Ca，Mg，铵，一，二，三或四-C 1 -C 4烷基铵的二 - 或三 - 羟烷基铵或二 - 或三 - 被C1-C4烷基和C1-C4羟烷基的混合物取代; 通过部分脱水制备具有下式的化合物的方法：; 以及它们作为生产不对称或对称荧光增白剂的中间体的用途。

    Method of preparing unsaturated dimers of alpha-methylstyrenes
    76.
    发明公开
    Method of preparing unsaturated dimers of alpha-methylstyrenes 失效
    Verfahren zur Herstellung vonungesättigtenDimeren von alpha-Methylstyrolen。

    公开(公告)号：EP0641756A1

    公开(公告)日：1995-03-08

    申请号：EP94303125.2

    申请日：1994-04-29

    申请人： GOI CHEMICAL COMPANY, LTD.

    发明人： Nishizawa, Hiroshi ,  Saito, Takayuki ,  Itoh, Tatsuo ,  Mashita, Kiyotaka

    IPC分类号： C07C15/50 ,  C07C2/04

    CPC分类号： C07C15/50 ,  C07C2/04 ,  C07C2531/025

    摘要： 1-pentene dimers of α -methylstyrenes are produced with high selectivity in good productivity by stirring 50 to 95 parts by weight of an α -methylstyrene in the presence of 50 to 5 parts by weight of an aqueous solution of a sulfonic acid, and a 1-pentene dimer having good preservative property is then collected by removing the sulfonic acid, adjusting the resulting reaction solution to pH 8 or higher and distilling the neutralized reaction solution.

    摘要翻译： 通过在50〜5重量份的磺酸水溶液的存在下搅拌50〜95重量份的α-甲基苯乙烯，以良好的生产率以高选择性生产α-甲基苯乙烯的1-戊烯二聚体， 然后通过除去磺酸收集具有良好防腐性能的1-戊烯二聚体，将所得反应溶液调节至pH8以上并蒸馏中和的反应溶液。