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    STYRENE DERIVATIVE, POLYSTYRENE DERIVATIVE COMPRISING THE SAME, PROCESS FOR PREPARING SAID POLYSTYRENE DERIVATIVE, AND ULTRAVIOLET ABSORBER COMPRISING SAID STYRENE DERIVATIVE OR POLYSTYRENE DERIVATIVE
    41.
    发明公开
    STYRENE DERIVATIVE, POLYSTYRENE DERIVATIVE COMPRISING THE SAME, PROCESS FOR PREPARING SAID POLYSTYRENE DERIVATIVE, AND ULTRAVIOLET ABSORBER COMPRISING SAID STYRENE DERIVATIVE OR POLYSTYRENE DERIVATIVE 失效
    STYRENABKÖMMLINGE，POLYSTYRENABKÖMMLINGE，METHOD用于制造这种聚苯乙烯衍生物和紫外线吸收意味着这包括。

    公开(公告)号：EP0348513A1

    公开(公告)日：1990-01-03

    申请号：EP88910106.9

    申请日：1988-11-22

    Applicant: Earth Chemical Co., Ltd.

    Inventor： NAKAYAMA, Tohru ,  KAJIFUSA, Noriyuki ,  HORINAKA, Akio ,  FUJII, Setsuro

    IPC: C07C133/08 ,  C07C159/00 ,  C08F226/00 ,  C09K3/00

    CPC classification number: A61Q17/04 ,  A61K8/8117 ,  C07C281/10 ,  C07C281/14 ,  C07C337/08 ,  C08F12/26

    Abstract: The styrene derivative of the present invention is characterized by comprising a compound represented by general formula (I), wherein at least one of R 1 , Rz, Ra, R 4 and R 5 is a carboxyl group, an alkyl group having 1 to 5 carbon atoms, a hydroxyalkyl group having 1 to 5 carbon atoms, a carboxyalkyl group having 2 to 6 carbon atoms, an alkoxycarbonyl group having 2 to 6 carbon atoms, an alkoxycarbonylalkyl group having 2 to 6 carbon atoms, or an aryl group and the remainders are each a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and R 6 is a sulfur atom or an oxygen atom. The styrene derivative has excellent capability of absorbing an ultraviolet ray having a wavelength form 290 nm, i.e., the shortest wavelength contained in sunrays reaching the surface of the earth, to 360 nm having an effect of causing the change In the plastics. The polystyrene derivative of the present invention is characterized by maintaining high water solubility through polymerization of said styrene derivative and causing no skin absorption, i.e., having high safety to the human body. Since the ultraviolet absorption wavelength region is the same as that which brings about a sunburn of the skin, which renders the polystyrene derivative suitable for use as an ultraviolet absorber. Further, according to the process for preparing the polystyrene derivative of the present invention, the polystyrene derivative can be purified in the stage of a monomer, which makes it possible to provide a polystyrene derivative having high quality and high stability.

    Abstract translation: 本发明的苯乙烯衍生物是通过包括由通式（I）表示的化合物，worin R1，R2，R3，R4中的至少一个和R 5是羧基烷基具有1至5个碳原子基团为特征的， 具有1至5个碳原子的羟烷基，具有2-6个碳原子的具有2-6个碳原子烷氧羰到具有2至6个碳原子，或在芳基基烷氧基羰基和羧基基团的其余的各自一个 氢原子或具有1至5个碳原子的烷基，且R 6为硫原子或氧原子。 作为苯乙烯衍生物具有吸收到紫外线具有从290纳米，即，包含在太阳光到达地球的表面的最短波长的波长，具有上引起塑料的变化的效果360nm以下的优异的能力。 本发明的聚苯乙烯衍生物是通过保持通过苯乙烯衍生物的聚合高水溶性和所述使没有皮肤吸收，即，具有高的安全性，对人体特征的。 由于紫外线吸收波长区域是相同这带来的皮肤晒伤，这使得适合用作紫外线吸收剂的聚苯乙烯衍生物。 此外，gemäß到用于制备本发明的聚苯乙烯衍生物的方法中，聚苯乙烯衍生物可以以单体，这使得它能够提供具有高质量和高稳定性的聚苯乙烯衍生物的阶段进行纯化。

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