[EN] PROCESS FOR THE MANUFACTURE OF FLUOROSURFACTANTS<br/>[FR] PROCÉDÉ DE FABRICATION DE TENSIOACTIFS FLUORÉS
申请人:SOLVAY SOLEXIS SPA
公开号:WO2010003931A1
公开(公告)日:2010-01-14
This invention pertains to a novel process for the manufacture of a perfluorooxycarboxylate of formula (I): RfO-CF2CF2-O-CF2-COOXa (I) wherein Rf is a perfluoro(oxy)alkyl group, and Xa is H, a monovalent metal or an ammonium group of formula NRN4, with RN, equal or different at each occurrence, being H or a C1-6 hydrocarbon group, said process comprising: (A) reacting a perfluorovinylether of formula Rf-O-CF=CF2 with an ethylene glycol derivative selected among ethylene glycol (HO-CH2CH2-OH), glycolic acid (HO-CH2-COOH), glycolaldheyde (HO-CH2-CHO) and protected derivatives thereof, so as to yield the corresponding addition product of formula Rf-O-CFH-CF2-O-CH2-E, with Rf having the same meaning as above detailed, and E being selected among -CH2OH, -COOH and -CHO; (B) optionally protecting functional group E with suitable chemistry; (C) fluorinating said (protected) addition product to yield the corresponding perfluorinated addition product; (D) optionally deprotecting said perfluorinated addition product to yield corresponding acyl fluoride of formula Rf-O-CF2-CF2-O-CF2-C(O)F; (E) hydrolyzing and, optionally, neutralizing, said acyl fluoride for yielding the perfluorooxycarboxylate of formula (I).
这项发明涉及一种用于制造化学式(I)的全氟氧羧酸酯的新工艺:RfO-CF2CF2-O-CF2-COOXa(I),其中Rf是全氟(氧)烷基基团,Xa是H,一价金属或化学式NRN4的铵基团,其中RN在每次出现时可以相同也可以不同,为H或C1-6碳氢基团,所述工艺包括:(A)将化学式Rf-O-CF=CF2的全氟乙烯醚与乙二醇衍生物反应,所述乙二醇衍生物从乙二醇(HO-CH2CH2-OH)、乙二酸(HO-CH2-COOH)、乙醛(HO-CH2-CHO)及其保护衍生物中选择,以产生相应的加成产物,化学式为Rf-O-CFH-CF2-O-CH2-E,其中Rf的含义与上述详细相同,E从-CH2OH、-COOH和-CHO中选择;(B)可选地用适当的化学方法保护官能团E;(C)氟化所述(保护的)加成产物以产生相应的全氟化加成产物;(D)可选地去保护所述全氟化加成产物以产生化学式为Rf-O-CF2-CF2-O-CF2-C(O)F的相应酰氟化合物;(E)水解和可选地中和所述酰氟化合物以产生化学式(I)的全氟氧羧酸酯。