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US 7,842,626 B2Granted
Partially fluorinated compositions and surface active agents
AssigneeE. I. Du Pont de Nemours and Company
InventorsErick Jose Acosta, Anilkumar Raghavanpillai, Sheng Peng, Stefan Reinartz
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Abstract
Partially fluorinated amino acid derivatives are provided that are useful as organogelators and surface treatment materials to provide oil- and water- repellency properties to substrates. Also provided are composite materials comprising a porous support and a porous nanoweb. The porous nanoweb contains fibrous structures of about 10 nm to about 1000 nm effective average fiber diameter.
Claims14
A composition of formula (I)
- wherein A is selected from the group consisting of:
- hydrogen, C1-C5 straight and branched chain alkyl, phenyl, benzyl, and —C(O)—Y—R;
- Y is independently —O— or —NH—;
- n is an integer of 0 to 10;
- R is a monovalent group having 1 to 40 carbon atoms;
- B is selected from the group consisting of:
- —O—, —NH—, and a covalent bond;
- Rf is a monovalent group is selected from the group consisting of formulas (IIa), (IIb), (IIc) and (IId):
- wherein
- m is an integer of 0 to 4;
- u and t are, independently, integers of 1 to 10;
- q and r are, independently, integers of 1 to 3;
- Rf1 is a C1-C6 linear or branched perfluoroalkyl group, optionally interrupted by one to five ether oxygen atoms, or a C6 perfluorinated aryl group;
- Rf2 is a C1-C6 linear or branched perfluoroalkyl group;
- and
- Rf3 is a C1 to C7 linear or branched perfluoroalkyl group, optionally interrupted by one to three ether oxygen atoms.
13 more elements
Dependencies are inferred from the claim text.