发明授权
- 专利标题： Improving the water absorption capacity of crosslinked, water-swellable polymers
- 专利标题（中）： 改善交联的水溶性聚合物的吸水能力
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申请号： US564083申请日： 1990-08-08
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公开(公告)号： US5180804A公开(公告)日： 1993-01-19
- 发明人: Manfred Niessner , Juergen Beck , Heinrich Hartmann , Andreas H. Kemna , Stefan Wickel
- 申请人： Manfred Niessner , Juergen Beck , Heinrich Hartmann , Andreas H. Kemna , Stefan Wickel
- 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： DEX3926169 19890808
- 主分类号： A61F13/53
- IPC分类号： A61F13/53 ; A61F13/15 ; A61F13/49 ; B01J20/26 ; C08F6/00 ; C08J3/00
摘要：
The water absorption capacity of crosslinked, water-swellable polymers is improved by a process in which a water-containing, finely divided polymer gel having a solids content of from 20 to 65% by weight is treated with steam at not less than 50.degree. C., the solids content of the water-containing polymer gel increasing by not more than 30% by weight, and the polymer gel is then dried in a conventional manner.
公开/授权文献
- US5770391A Reagents and methods for use in bioluminescence 公开/授权日：1998-06-23
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