发明授权
US5021503A Resin for plastic lens having high-refractive index, lens comprising the
resin, and method for preparation of the lens
失效
具有高折射率的塑料透镜用树脂，包含该树脂的透镜以及该透镜的制备方法
- 专利标题： Resin for plastic lens having high-refractive index, lens comprising the resin, and method for preparation of the lens
- 专利标题（中）： 具有高折射率的塑料透镜用树脂，包含该树脂的透镜以及该透镜的制备方法
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申请号： US311352申请日： 1989-02-15
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公开(公告)号： US5021503A公开(公告)日： 1991-06-04
- 发明人: Teruyuki Nagata , Koju Okazaki , Nobuyuki Kajimoto , Tohru Miura , Yoshinobu Kanemura , Katsuyoshi Sasagawa
- 申请人： Teruyuki Nagata , Koju Okazaki , Nobuyuki Kajimoto , Tohru Miura , Yoshinobu Kanemura , Katsuyoshi Sasagawa
- 申请人地址： JPX Tokyo
- 专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-32842 19880217; JPX63-33871 19880218; JPX63-33872 19880218; JPX63-37515 19880222; JPX63-37523 19880222; JPX63-37525 19880222
- 主分类号： C08G18/34
- IPC分类号： C08G18/34 ; C08G18/38 ; C08G18/77
摘要：
The present invention relates to resin useful in preparing plastic lenses having a high refractive index comprising reacting an aliphatic polyisocyanate compounds having at least one sulfur atom with one or more of active hydrogen compounds selected from the group consisting of a polyol, a polythiol having sulfur atoms only in a mercapto groups, and a polythiol having at least one sulfur atom other than in the mercapto groups; lenses containing the above-mentioned resin; and a method for the preparation thereof characterized by adding an internal release agent to the mixture of the above-mentioned raw materials in casting lenses from the resin; and lenses obtained by this method.
公开/授权文献
- USD273140S Table lamp 公开/授权日：1984-03-20
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