发明公开
EP0157435A2 Aqueous aminomethylenephosphonic acid solutions containing organic carboxylate stabilizing agent
失效
含水的氨基亚甲基膦酸溶液，有机羧酸盐含有作为稳定剂。
- 专利标题： Aqueous aminomethylenephosphonic acid solutions containing organic carboxylate stabilizing agent
- 专利标题（中）： 含水的氨基亚甲基膦酸溶液，有机羧酸盐含有作为稳定剂。
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申请号： EP85200230.2申请日： 1985-02-21
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公开(公告)号： EP0157435A2公开(公告)日： 1985-10-09
- 发明人: Wevers, Jean , Cassidy, Stephen P. , Ernst, Hubert , Barrat, Christian Roland
- 申请人： THE PROCTER & GAMBLE COMPANY , Procter & Gamble European Technical Center
- 申请人地址： 301 East Sixth Street Cincinnati Ohio 45202 US
- 专利权人： THE PROCTER & GAMBLE COMPANY,Procter & Gamble European Technical Center
- 当前专利权人： THE PROCTER & GAMBLE COMPANY,Procter & Gamble European Technical Center
- 当前专利权人地址： 301 East Sixth Street Cincinnati Ohio 45202 US
- 代理机构： Ernst, Hubert
- 优先权： GB8405573 19840302
- 主分类号： C07F9/38
- IPC分类号： C07F9/38
摘要：
Aqueous solutions of aminomethylenephosphonic acid, chiefly diethylenetriaminepenta(methylenephosphonic acid), are disclosed containing a crystallization inhibitor which is an alkali-metal salt of an organic carboxylic acid and residual hydrochloric acid originating from the manufacturing process. The equivalent molar concentration ratio of carboxylic acid salt to hydrochloric acid is greater than 1, preferably from 1.5 to 3.
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