| 摘要 |
6-17368/=/CGC 1386 Heteroatom Containing Perfluoroakyl Terminated Neopentyl Acids and Salts Thereof Heteroatom containing perfluoroalkyl terminated neopentyl carboxylic acids and salts thereof of the formula I (I), wherein Rf is a hydrophobic, oleophobic fluoroaliphatic group of up to 20 carbon atoms, E is alkylene of up to 10 carbon atoms, optionally interrupted by up to three groups including -NR-, -O-, -S-, -SO2-, -O2C-, -CONR-, and -SO2NR-, X is -S-, -SO2-, -O-, or -NR-, Y independently is hydrogen when one m is 0, or Y is a straight or branched chain alkylene, tri- or tetra-radical of up to 10 carbons, optionally interrupted by -O-, -S-, or -CH=CH-, or carbonyl-alkylene, arylene, or carbonylarylene, R is independently hydrogen, alkyl, or hydroxyalkyl of 1 to 6 carbon atoms, n is l to 3, m is independently 0, 1, 2, or 3 with the proviso that m cannot be 0 in both instances and M is independently hydrogen, an alkali metal, ammonium or organoammonium ion are described. The bis-perfluoroakyl carboxylic acids or salts thereof are useful to impart oil and water repellency to cellulosic, natural and synthetic polyamide, leather and polyester materials, and other compositions.
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