发明授权
US5936121A Polymers of aspartic acid with sequestering activity process for their
preparation and use thereof
失效
天冬氨酸的聚合物具有螯合活性方法,用于制备和使用
- 专利标题: Polymers of aspartic acid with sequestering activity process for their preparation and use thereof
- 专利标题(中): 天冬氨酸的聚合物具有螯合活性方法,用于制备和使用
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申请号: US620330申请日: 1996-03-22
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公开(公告)号: US5936121A公开(公告)日: 1999-08-10
- 发明人: Davino Gelosa , Roberto Ruggieri , Andrea Sliepcevich , Franco Codignola
- 申请人: Davino Gelosa , Roberto Ruggieri , Andrea Sliepcevich , Franco Codignola
- 申请人地址: ITX Milan
- 专利权人: Sisas Societa' Italiana Serie Acetica E Sintetica Spa
- 当前专利权人: Sisas Societa' Italiana Serie Acetica E Sintetica Spa
- 当前专利权人地址: ITX Milan
- 优先权: ITXMI-95-A-0576 19950323
- 主分类号: C11D3/33
- IPC分类号: C11D3/33 ; C02F5/12 ; C07C231/12 ; C07C237/22 ; C07K2/00 ; C08G69/10 ; C08G73/10 ; C09K3/00 ; C11D3/37 ; C07C229/00
摘要:
An oligomer of an aspartic acid is provided having repeating monomeric units of aspartic acid of the formula: ##STR1## and by a first chain unit having formula: ##STR2## and a chain stopper unit A which is: ##STR3## wherein X is an alkali metal, R represents H or an alkyl containing from 1 to 4 carbon atoms and R.sub.1 is H or the group --COOX.
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