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US 2012/0009840 A1Published application
Partially fluorinated ureas and amides
AssigneeE.I. du Pont de Nemours and Company
InventorsKeith Ward Hutchenson, Anilkumar Raghavanpillai, Stefan Reinartz
Life of this patent
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Abstract
Disclosed are certain partially fluorinated amide compounds and composite materials containing the compounds. Also disclosed are methods for making the composite materials.
Claims14
A compound of formula (I)
- Ro-[L-(CqH2qS)pCrH2rRf]2 (I)
- wherein
- Ro is a divalent organic group having 2 to 40 carbon atoms;
- L is a linking group, —C(O)NH—, wherein the left side of the linking group is bonded to Ro;
- p is an integer of 0 or 1;
- q is an integer of 2 to 10;
- r is an integer of 1 to 10;
- and
- Rf is a linear or branched C1-C6 perfluoroalkyl group.
6 more elements
A composite material comprising a porous support and a porous nanoweb, wherein said porous nanoweb comprises fibrous structures of about 10 nm to about 1000 nm effective average fiber diameter as determined with electron microscopy;
- said fibrous structures comprising one or more compounds of formula (I):
- Ro-[L-(CqH2qS)pCfH2rRf]2 (I)
- wherein
- Ro is a divalent organic group having 2 to 40 carbon atoms;
- L is a linking group, —C(O)NH—, wherein the left side of the linking group is bonded to Ro;
- p is an integer of 0 or 1;
- q is an integer of 2 to 10;
- r is an integer of 1 to 10;
- and
- Rf is a linear or branched C1-C6 perfluoroalkyl group.
7 more elements
A method for making a composite material comprising a porous support and a porous nanoweb comprising:
- (f) providing a porous support;
- (g) providing a gelling mixture comprising one or more solvents and one or more organogelator(s);
- (h) applying the gelling mixture to the porous support;
- (i) inducing said organogelator(s) to form a nanoweb gel;
- and
- (j) removing the solvent(s) from the nanoweb gel to provide a dry porous nanoweb coating on said porous support;
- wherein said organogelator(s) is one or more compositions of formula (I):
- Ro-[L-(CqH2qS)pCrH2rRf]2 (I)
- wherein
- Ro is a divalent organic group having 2 to 40 carbon atoms;
- L is a linking group, —C(O)NH—, wherein the left side of the linking group is bonded to Ro;
- p is an integer of 0 or 1;
- q is an integer of 2 to 10;
- r is an integer of 1 to 10;
- and
- Rf is a linear or branched C1-C6 perfluoroalkyl group.
13 more elements
Dependencies are inferred from the claim text.