发明授权
US3914017A K-sheet type polarizers prepared from polyvinyl alcohol graft copolymers 失效
由聚乙烯醇接枝共聚物制备的K型偏振片

  • 专利标题: K-sheet type polarizers prepared from polyvinyl alcohol graft copolymers
  • 专利标题(中): 由聚乙烯醇接枝共聚物制备的K型偏振片
  • 申请号: US41254173
    申请日: 1973-11-05
  • 公开(公告)号: US3914017A
    公开(公告)日: 1975-10-21
  • 发明人: BEDELL STANLEY FTAYLOR LLOYD D
  • 申请人: POLAROID CORP
  • 专利权人: Polaroid Corp
  • 当前专利权人: Polaroid Corp
  • 优先权: US41254173 1973-11-05
  • 主分类号: G02B5/30
  • IPC分类号: G02B5/30 G02B27/28
K-sheet type polarizers prepared from polyvinyl alcohol graft copolymers
摘要:
K-sheet type polarizers are prepared from polyvinyl alcohol graft copolymers, said graft copolymers being obtained by a redox type grafting procedure utilizing certain transition metal cation catalysts.
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