发明授权
US4929707A Polyurethane base lens resin, plastic lens comprising the resin and
preparation method of the lens
失效
聚氨酯基础透镜树脂，包含树脂的塑料透镜和透镜的制备方法
- 专利标题： Polyurethane base lens resin, plastic lens comprising the resin and preparation method of the lens
- 专利标题（中）： 聚氨酯基础透镜树脂，包含树脂的塑料透镜和透镜的制备方法
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申请号： US305905申请日： 1989-02-03
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公开(公告)号： US4929707A公开(公告)日： 1990-05-29
- 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： JPX63-31788 19880216; JPX63-37514 19880222
- 主分类号： B29C33/60
- IPC分类号： B29C33/60 ; B29C39/02 ; B29K75/00 ; B29K105/32 ; B29L11/00 ; C08G18/30 ; C08G18/32 ; C08G18/38 ; C08G18/77 ; G02B1/04
摘要：
Polyurethane base lens resins obtained by reacting one or more of sulfur-containing polyisocyanates compound with one or more of sulfur-containing polyols, and polyurethane base lenses comprising these resins are disclosed.A method for preparing polyurethane base lenses which comprises adding internal mold releasing agents to the mixture of the above polyisocyanates and polyols prior to casting polymerization is also disclosed.
公开/授权文献
- US5532488A Apparatus and method for evaluating orientation film 公开/授权日：1996-07-02
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