Patent ID: 6790890
Filing Date: 2004-09-14
Classification: C08G,D21H

Abstract:
Aqueous compositions comprising the following components:I) a phosphate selected from the following: (A) Tâ€”Oâ€”[Rfâ€”CFYâ€”Lâ€”O]P(O)(Oâˆ’Z+)(OH) (B) (OH)m(Oâˆ’Z+)2-mP(O)[Oâ€”Lâ€”YFCâ€”Oâ€”Rfâ€”CFYâ€”Lâ€”Oâ€”P(O)(Oâˆ’Z+)]mâ€²â€”[Oâ€”Lâ€”YFCâ€”Oâ€”Rfâ€”CFYâ€”Lâ€”O]P(O)(Oâˆ’Z+)2-m(OH)m or mixtures of (A) and (B), wherein: mâ€² is an integer from 0 to 20 L is an organic group selected from â€”CH2â€”(OCH2CH2)nâ€”, â€”COâ€”NRâ€²â€”(CH2)qâ€”, wherein Râ€²=H or C1 to C4 alkyl; n is a number from 0 to 8; q is a number from 1 to 8; Z+=alkaline metal ion or a NR4 group, wherein R=H, C1 to C4 alkyl, or an aliphatic amine ion; Y=F, CF3; m is a number between 0 to 1, extremes included; Rf is a (per)fluoropolyoxyalkylene chain having a number average molecular weight between 350 and 8,000, formed by repeating units, statistically distributed along the chain, having at least one of the following structures: (CFXO), (CF2CF2O), (CF2CF2CF2O), (CF2CF2CF2CF2O), (CR4R5CF2CF2O), (CF(CF3)CF2O), (CF2CF(CF3)O), wherein X=F, CF3; R4 and R5 are equal to or different from each other and are selected from H, Cl, or perfluoroalkyl from 1 to 4 carbon atoms; T is a (per)fluoroalkyl group selected from â€”CF3, â€”C2F5, â€”C3F7, â€”CF2Cl, â€”C2F4Cl, â€”C3F6Cl, optionally substituted with one or two H atoms, at the place of F atoms, and II) a solvent selected from C1 to C5 aliphatic alcohols, aliphatic and cyclic ethers, aliphatic acetates, and mixtures thereof wherein the ratio by weight between components I) and II) is in the range of 1:1 to 1:0.05.