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10 条记录 (耗时 0.017 秒)

    Process for Polymerisation of Diethylene Glycol Bis Allyl Carbonate
    4.
    发明申请
    Process for Polymerisation of Diethylene Glycol Bis Allyl Carbonate 失效
    二甘醇双烯丙基碳酸酯的聚合方法

    公开(公告)号：US20080182916A1

    公开(公告)日：2008-07-31

    申请号：US11886387

    申请日：2006-01-16

    申请人： Rakesh Kumar Khandel ,  Geetha Seshadri ,  Gauri Shankar Jha

    发明人： Rakesh Kumar Khandel ,  Geetha Seshadri ,  Gauri Shankar Jha

    IPC分类号： C08F2/46

    CPC分类号： C08F2/46 ,  C08F218/16

    摘要： A process for polymerization of diethylene glycol bis allyl carbonate which may advantageously be employed for producing plastic lenses having a low refractive index comprising in the step of subjecting diethylene glycol bis allyl carbonate to the step of gamma radiation in the presence of diiso propyl peroxydicarbonate as a catalyst.

    摘要翻译： 一种二甘醇双烯丙基碳酸酯的聚合方法，其可有利地用于生产具有低折射率的塑料透镜，该方法包括在二异丙基过氧化二碳酸酯存在下将二甘醇双烯丙基碳酸酯进行γ辐射的步骤 催化剂。

    Process for the Synthesis and Preparation of Polymeric Materials for Use in Optical Applications Such as Plastic Lenses
    9.
    发明申请
    Process for the Synthesis and Preparation of Polymeric Materials for Use in Optical Applications Such as Plastic Lenses 失效
    用于光学应用如聚合物镜片的聚合材料的合成和制备方法

    公开(公告)号：US20100016524A1

    公开(公告)日：2010-01-21

    申请号：US12304601

    申请日：2007-03-09

    申请人： Rakesh Kumar Khandal ,  Amita Malik ,  Geetha Seshadri ,  Gouri Shankar Jha ,  Mukti Tyagi

    发明人： Rakesh Kumar Khandal ,  Amita Malik ,  Geetha Seshadri ,  Gouri Shankar Jha ,  Mukti Tyagi

    IPC分类号： C08F30/04

    CPC分类号： C08F230/04 ,  C08F220/06 ,  G02B1/041 ,  C08L33/02

    摘要： This invention relates to a process for the preparation of plastic material for use in optical lenses comprising the steps of: a) synthesizing lead acrylate by adding lead monoxide to NaoH, which is stirred to obtain a homogenous mixture, b) adding an inhibitor to such a monomer mixture; c) adding acrylic acid drop wise to such a monomer mixture so as to avoid the formation of by products, d) heating the mixture of step (c) to a temperature of 35 to 45° C. till a white precipitate of lead acrylate is obtained, e) filtering, washing and drying the precipitate, f) subjecting lead acrylate to the step of polymerization by stepwise heating.

    摘要翻译： 本发明涉及一种用于制备用于光学透镜的塑料材料的方法，包括以下步骤：a）通过向NaoH中加入一氧化铅合成丙烯酸铅，将其搅拌得到均匀的混合物，b）向其中加入抑制剂 单体混合物; c）将丙烯酸滴加到这种单体混合物上以避免产物形成，d）将步骤（c）的混合物加热至35-45℃，直至丙烯酸铅的白色沉淀物为 e）过滤，洗涤和干燥沉淀物，f）使丙烯酸铅经过逐步加热进行聚合步骤。