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CN105873894B 全氟乙烯氧基聚醚羧酸碱金属盐及其制造方法 有权

全氟乙烯氧基聚醚羧酸碱金属盐及其制造方法
摘要：
提供通式CF2=CF〔OCF2CF(CF3)〕bO(CF2)aO〔CF(CF3)CF2O〕cCF(CF3)COOM〔I〕(M为碱金属、优选为钠或钾，a为1~6的整数、优选为2，b+c为0~6的整数、优选为0或1)所示的全氟乙烯氧基聚醚羧酸碱金属盐，所述全氟乙烯氧基聚醚羧酸碱金属盐是通过将通式CF2=CF〔OCF2CF(CF3)〕bO(CF2)aO〔CF(CF3)CF2O〕cCF(CF3)COOR〔II〕(R为碳原子数1~12的烷基，a为1~6的整数，b+c为0~6的整数)所示的全氟乙烯氧基聚醚羧酸烷基酯在碱金属氢氧化物的存在下进行水解或溶剂分解而制造的。
摘要（英）：

A perfluorovinyloxy polyether carboxylic acid alkali metal salt represented by the general formula is provided: €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒCF 2 =CF[OCF 2 CF(CF 3 )] b O(CF 2 ) a O[CF(CF 3 )CF 2 O] c CF(CF 3 )COOM€ƒ€ƒ€ƒ€ƒ€ƒ[I], wherein M is alkali metal, preferably sodium or potassium, a is an integer of 1 to 6, preferably 2, and b+c is an integer of 0 to 6, preferably 0 or 1. This perfluorovinyloxy polyether carboxylic acid alkali metal salt is produced by subjecting a perfluorovinyloxy polyether carboxylic acid alkyl ester represented by the general formula: €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒCF 2 =CF[OCF 2 CF(CF 3 )] b O(CF 2 ) a O[CF(CF 3 )CF 2 O] c CF(CF 3 )COOR€ƒ€ƒ€ƒ€ƒ€ƒ[II], wherein R is an alkyl group having 1 to 12 carbon atoms, a is an integer of 1 to 6, and b+c is an integer of 0 to 6; to hydrolysis or solvolysis in the presence of an alkali metal hydroxide.

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