Lens of a homo- or copolymer of a fluorine containing styrene polymer
    4.
    发明授权
    Lens of a homo- or copolymer of a fluorine containing styrene polymer 失效
    含氟苯乙烯聚合物的均聚物或共聚物的透镜

    公开(公告)号:US4420225A

    公开(公告)日:1983-12-13

    申请号:US305756

    申请日:1981-09-25

    CPC分类号: C08F12/20

    摘要: A homopolymer or copolymer which contains, as a monomer unit, at least one styrene of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently of one another denote hydrogen, fluorine or partly or completely fluorinated alkyl or alkoxy andR.sup.4 and R.sup.5 independently of one another represent hydrogen or fluoride, the total number of fluorine atoms in the radicals R.sup.1 to R.sup.5 being at least 3 and the total number of carbon atoms in the radicals R.sup.1 to R.sup.3 being at most 8. The homo- or copolymers can be prepared by vinyl polymerization. They are useful as lenses or other components in an optical system where they have a refractive index n.sub.D of 1.42 to 1.55 with an Abbe number v.sub.D of 30 to 50.

    摘要翻译: 含有作为单体单元的至少一种式“IMAGE”的苯乙烯的均聚物或共聚物,其中R1,R2和R3彼此独立地表示氢,氟或部分或完全氟化的烷基或烷氧基,R4和R5独立地是 彼此表示氢或氟,基团R1至R5中的氟原子总数至少为3,基团R1至R3中的总碳原子数最多为8.可以制备均聚物或共聚物 通过乙烯基聚合。 它们可用作光学系统中的透镜或其它部件,其中折射率nD为1.42至1.55,阿贝数vD为30至50。