发明授权
US4702823A Phosphinic acid adducts with maleic acid semiesters, a process for their
production and their use
失效
与马来酸半酯的次膦酸加合物，其制备方法及其用途
- 专利标题： Phosphinic acid adducts with maleic acid semiesters, a process for their production and their use
- 专利标题（中）： 与马来酸半酯的次膦酸加合物，其制备方法及其用途
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申请号： US879716申请日： 1986-06-27
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公开(公告)号： US4702823A公开(公告)日： 1987-10-27
- 发明人: Holger Tesmann , Helmut Blum , Rita Koester
- 申请人： Holger Tesmann , Helmut Blum , Rita Koester
- 申请人地址： DEX Duesseldorf
- 专利权人： Henkel Kommanditgesellschaft auf Aktien
- 当前专利权人： Henkel Kommanditgesellschaft auf Aktien
- 当前专利权人地址： DEX Duesseldorf
- 优先权： DEX3522930 19850627
- 主分类号： B01F17/00
- IPC分类号： B01F17/00 ; B01F17/14 ; B01F17/42 ; B03D1/014 ; C07F9/30 ; C07F9/48 ; B03D1/02
摘要：
The invention relates to adducts of phosphinic acid with maleic acid semiesters and salts thereof corresponding to the following general formula ##STR1## in which R.sup.1 is hydrogen or a methyl group,R.sup.2 is a linear or branched, optionally hydroxyl substituted C.sub.8 -C.sub.18 alkyl or cycloalkyl group or an aryl group corresponding to the formula ##STR2## in which R.sup.3 and R.sup.4 may be the same or different and are hydrogen or a linear or branched unsubstituted C.sub.7 -C.sub.12 alkyl group,M is H, Na, K or NH.sub.4,m is an integer of from 1 to 8, andn is 1 or 2.The invention also relates to a process for production of the adducts and to their use for the flotation of non-sulfidic minerals.
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