Fluoroalkyl acid amide surfactants

Details Fluoroalkyl acid amide surfactants Fluoroalkyl acid amide surfactants

2007-08-06

2009-12-22

Kumar, Shailendra (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C514S788000, C510S467000, C510S488000, C510S505000, C510S536000, C252S079100, C252S396000, C055S290000

Reexamination Certificate

active

07635789

ABSTRACT:
Compounds of formula (I) and formula (III):whereinA is —F or —CF3;Rfis independently C1-C6perfluorinated linear or branched alkyl optionally interrupted by one or more oxygens; Rois a linear or branched aliphatic group of about 10 to about 100 carbon atoms, interrupted by about 5 to about 50 ether oxygens, wherein the ratio of ether oxygen to carbon atoms is about 1:2 to about 1:3; and wherein each carbon atom has at most one ether oxygen atom bonded to it, and covalent bonding between ether oxygen atoms is absent; m is an integer of 1 to 3;Y−mis an anionic radical selected from the group consisting of halide, C1-C6carboxylate, carbonate, hydrocarbonate, sulfate, hydrosulfate, C1-C6sulfonate, phosphate, hydrophosphate, and dihydrophosphate.Further embodiments include methods of lowering surface tension of a medium comprising contacting the medium with a composition of formula (I), (III), or a mixture thereof.

REFERENCES:
patent: 3621059 (1971-11-01), Costello et al.
patent: 5035841 (1991-07-01), Costello et al.
patent: 0 144 844 (1985-06-01), None

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