| 申请日期 | 2025-06-28 | 申请号 | FR08058037 |
| 公开（公告）号 | FR2938842A1 | 公开（公告）日 | 2010-05-28 |
| 公开国别 | FR | 申请人省市代码 | 全国 |
| 申请人 | SNF SAS | ||
| 简介 | In a process for preparing cationic or amphoteric (co)polymers derived from acrylamide by a Hofmann degradation reaction in aqueous solution in the presence of an alkali and/or alkaline-earth metal hydroxide and an alkali metal hypohalide on a base copolymer, a solution of base copolymer on which the reaction is performed contains a polyvalent cationic salt representing at least 0.5% by weight, preferably from 2 to 10% by weight of the base copolymer. | ||
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