发明授权
- 专利标题: Coloring of paper
- 专利标题(中): 着色纸
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申请号: US350143申请日: 1982-02-19
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公开(公告)号: US4383834A公开(公告)日: 1983-05-17
- 发明人: Hans-Juergen Degen , Wolf Guender , Guenter Frey , Werner Streit , Rolf Fikentscher , Klaus Wulz
- 申请人: Hans-Juergen Degen , Wolf Guender , Guenter Frey , Werner Streit , Rolf Fikentscher , Klaus Wulz
- 申请人地址: DEX Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX3111712 19810325
- 主分类号: D21H19/10
- IPC分类号: D21H19/10 ; D21H17/07 ; D21H17/55 ; D21H21/28 ; D21D3/00 ; D06P1/46 ; D21H3/80 ; D21H3/82
摘要:
A process for coloring paper with an acid dye and/or direct dye in an aqueous medium in the presence of a water-soluble reaction product of an alkylating agent, possessing an aromatic substituent, with a cationic polyelectrolyte.The process gives papers with high color strength and substantially avoids cylinder twosidedness of the coloration.
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