发明授权
- 专利标题： Method of increasing the molecular weight in the manufacture of polysuccinimide
- 专利标题（中）： 在多糖制剂中增加分子量的方法
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申请号： US726337申请日： 1991-07-05
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公开(公告)号： US5142062A公开(公告)日： 1992-08-25
- 发明人: Joachim Knebel , Klaus Lehmann
- 申请人： Joachim Knebel , Klaus Lehmann
- 申请人地址： DEX Darmstadt
- 专利权人： Rohm GmbH Chemische Fabrik
- 当前专利权人： Rohm GmbH Chemische Fabrik
- 当前专利权人地址： DEX Darmstadt
- 优先权： DEX4023463 19900724
- 主分类号： C08G73/10
- IPC分类号： C08G73/10
摘要：
A method of manufacturing polysuccinimides with molecular weights in the range 100,000 to about 200,000 by polycondensation of aspartic acid, with phosphoric acids as condensation agents, in at least two process stages, at temperatures of 100.degree.-250.degree. C. and under reduced pressure, where in the second stage the mixture containing aspartic acid and phosphoric acid undergoes subsequent condensation following comminution.
公开/授权文献
- USD291162S Personal computer storage cabinet 公开/授权日：1987-08-04