High refractive index thermoplastic polyphosphonates
    43.
    发明授权
    High refractive index thermoplastic polyphosphonates 失效
    高折射率热塑性聚膦酸盐

    公开(公告)号:US06288210B1

    公开(公告)日:2001-09-11

    申请号:US09439825

    申请日:1999-11-12

    IPC分类号: C08G7902

    CPC分类号: C08G79/04

    摘要: High refractive index, melt processable polyphosphonates and methods for preparing the same are provided. These polymers are particularly useful for optical and ophthalmic parts, such as lenses. A method of preparing optical and ophthalmic lenses by injection molding the polymers of the present invention into the form of the optical or ophthalmic lenses is also provided.

    摘要翻译: 提供高折射率,可熔融加工的聚膦酸盐及其制备方法。 这些聚合物特别适用于光学和眼科部件,例如透镜。 还提供了通过将本发明的聚合物注射成光学或眼科镜片的形式来制备光学和眼科镜片的方法。

    Polymers of N,N-disubstituted acrylamides and method for the preparation
thereof
    47.
    发明授权
    Polymers of N,N-disubstituted acrylamides and method for the preparation thereof 失效
    N,N-二取代丙烯酰胺的聚合物及其制备方法

    公开(公告)号:US4668742A

    公开(公告)日:1987-05-26

    申请号:US353788

    申请日:1982-03-01

    IPC分类号: C08F297/02

    CPC分类号: C08F297/026

    摘要: N,N-disubstituted acrylamides are polymerized at temperatures from about -80.degree. to 100.degree. centigrade by anionically initiated polymerization to provide homogeneous polymerization by employing a solvent containing from about 25 to 100 weight percent of a pyridine type compound. Homopolymers or block polymers may be obtained.

    摘要翻译: N,N-二取代的丙烯酰胺通过阴离子引发聚合在约-80℃至100℃的温度下聚合,以通过使用含有约25至100重量%的吡啶类化合物的溶剂提供均相聚合。 可以获得均聚物或嵌段聚合物。