| 申请日期 | 2026-04-27 | 申请号 | WOFR09050456 |
| 公开（公告）号 | WO2010061082A1 | 公开（公告）日 | 2010-06-03 |
| 公开国别 | WO | 申请人省市代码 | 全国 |
| 申请人 | SNF SAS; HUND RENE; AURIANT CHRISTOPHE | ||
| 简介 | The invention relates to a method for preparing cationic or amphoteric (co)polymers derived from acrylamide by a Hofmann degradation reaction in an aqueous solution in the presence of an alkaline and/or alkaline-earth hydroxide and of an alkaline hypohalide on a base copolymer characterised in that the base solution on which the reaction is carried out contains a polyvalent cationic salt representing at least 0.5 wt % and preferably 2 to 10 wt % of the base copolymer. | ||
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