发明授权
- 专利标题: Color developer for pressure-sensitive copying paper
- 专利标题(中): 压敏复印纸的彩色显影剂
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申请号: US847519申请日: 1977-11-01
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公开(公告)号: US4216300A公开(公告)日: 1980-08-05
- 发明人: Toyoji Kikuga , Koji Hirai
- 申请人: Toyoji Kikuga , Koji Hirai
- 申请人地址: JPX Tokyo
- 专利权人: Sumitomo Durez Company, Ltd.
- 当前专利权人: Sumitomo Durez Company, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX51/131672 19761104
- 主分类号: B41M5/155
- IPC分类号: B41M5/155 ; C08G8/24 ; C08L61/06
摘要:
A color developer for pressure-sensitive copying papers is prepared by mixing a para-substituted difunctional phenol-aldehyde condensate and tri- or higher-functional phenol-aldehyde condensate. The tri- or higher-functional phenol-aldehyde condensate can be modified by a polyvalent metal.
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