发明公开
- 专利标题： Composition for increasing wet strength of paper
- 专利标题（中）： 组成以增加纸张湿强度
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申请号： EP02024127.9申请日： 2002-10-29
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公开(公告)号： EP1308558A3公开(公告)日： 2004-09-22
- 发明人: Doi, Takeshi , Miyamura, Takeshi , Kouchi, Masahiro
- 申请人： DAI-ICHI KOGYO SEIYAKU CO., LTD.
- 申请人地址： 55 Nishishichijo Higashikubo-cho Shimogyo-ku Kyoto JP
- 专利权人： DAI-ICHI KOGYO SEIYAKU CO., LTD.
- 当前专利权人： DAI-ICHI KOGYO SEIYAKU CO., LTD.
- 当前专利权人地址： 55 Nishishichijo Higashikubo-cho Shimogyo-ku Kyoto JP
- 代理机构： Kinzebach, Werner, Dr.
- 优先权： JP2001333827 20011031
- 主分类号： D21H21/20
- IPC分类号： D21H21/20 ; D21H17/57 ; D21H17/08 ; C08G18/70 ; C08G18/80 ; C08G18/08 ; C08G18/10 ; C08G18/12
摘要：
For use as a wet strength agent, a water-soluble blocked urethane prepolymer having a hydrophilic group and a blocked isocyanate group is combined with a cationic charge-adjusting agent. The adsorption and retention of the water-soluble blocked urethane prepolymer to cellulosic fiber are promoted by virtue of the cationic charge adjusting agent when the wet strength agent is added to a papermaking stock.
公开/授权文献
- EP1308558A2 Composition for increasing wet strength of paper 公开/授权日：2003-05-07
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