发明授权
- 专利标题： Preparation of water-insoluble carboxymethyl cellulose absorbents
- 专利标题（中）： 水不溶性羧甲基纤维素吸收剂的制备
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申请号： US906724申请日： 1978-05-17
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公开(公告)号： US4200737A公开(公告)日： 1980-04-29
- 发明人: Herman L. Marder , Nathan D. Field , Makoto Shinohara
- 申请人： Herman L. Marder , Nathan D. Field , Makoto Shinohara
- 申请人地址： CT Stamford
- 专利权人： International Playtex, Inc.
- 当前专利权人： International Playtex, Inc.
- 当前专利权人地址： CT Stamford
- 主分类号： A61L15/28
- IPC分类号： A61L15/28 ; C08B11/20 ; C08B15/00
摘要：
A process for the preparation of substantially water-insoluble, particulate sodium carboxymethyl cellulose, suitable for use as an absorbent in tampons and other catamenial devices, or the like. The process involves treating solid, water-soluble sodium carboxymethyl cellulose having a degree of substitution of at least 0.4 with hydrogen chloride gas and heating the carboxymethyl cellulose, either after the hydrogen chloride treatment or concurrently therewith, to produce a cross-linked, insoluble, partially acid form carboxymethyl cellulose suitable for absorbent applications.
公开/授权文献
- US5884826A Vehicle equipment rack 公开/授权日：1999-03-23
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