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US 2006/0148671 A1Published application
Compositions of monomeric surfactants
Assignee3M Innovative Properties Company
InventorsRudolf Dams, Michael Terrazas, Michael Sierakowski, George Moore
Life of this patent
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Abstract
Described are monomeric fluorosurfactants having two perfluoro-lower-alkyl sulfonamido segments which are more efficient and effective in lowering the surface tension of organic solvents and water compared to other C4-based fluorosurfactants.
Claims10
A surfactant composition comprising one or more compounds of the formula:
- wherein Rf is a C2-C5 perfluoroalkyl group;
- R is a C1-C4 alkyl or aryl group;
- Q is a divalent linking group selected from —CHO—, —CHO(CnH2n)—, —CHO(CnH2nO)p(CnH2n)—, —CHS—, —CHS(CnH2n)—, —CHS(CnH2nO)p(C2H2n)—, and
- Z is —COO−M+, —SO3−M+, —N+(R)3Y−, —N+(R)2O−, —N+(R)2(CH2)nCOO−M+, —N+(R)2(CH2)nSO3−, —(CH2CH2O)nR′, —(CH2CH2O)n(CH(CH3)CH2OZR′, —OSO3−M+, —PO32−M2+ or —PO53−, in which n is an integer of 1 to 10, z is an integer from 0 to 10, and M is a hydrogen, metal ion, NH4, or a protonated tertiary amine;
- R′ is H or CnH2n+1;
- and Y is a halide or a carboxylate.
3 more elements
Dependencies are inferred from the claim text.