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US 9,168,408 B2Granted
Surfactant composition from polyfluoroalkylsulfonamido alkyl amines
AssigneeThe Chemours Company Fc, LLC
InventorsAlexander Borisovich Shtarov, Volodymyr B. Pashovych
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Abstract
The present invention relates to aminosulfonate and aminocarboxylate compositions derived from a mixture of polyfluoroalkylsulfonamido alkyl amines including at least one polyfluoroalkylsulfonamido alkyl amine and its analog, a di(polyfluoroalkylsulfonamido alkyl) amine. The aminosulfonate and aminocarboxylate compositions are useful for many purposes including amphoteric surface-active agents and aqueous film forming foams in fire fighting applications.
Claims14
A mixture of aminosulfonate or aminocarboxylate compositions, or mixtures thereof, which comprises:
- i) at least one compound represented by
- and
- ii) at least one compound represented by
- wherein:
- a and b are independently chosen from integers such that a≧0, b>0, and a+b=3;
- c and d are independently chosen from integers such that c≧0, d>0, and c+d=2;
- each Rf is the same in i) and ii) and chosen from a C2-C12 polyfluoroalkyl, comprising partially or completely fluorinated linear or branched alkyl, optionally interrupted by one to four groups chosen from:
- —O—, —S—, —S(O)—, and —S(O)2—;
- each n in i) and ii) is the same and chosen from an integer from 0 to 6;
- each m in i) and ii) is the same and chosen from an integer from 0 to 10;
- each R1, R5, R6 is independently chosen from hydrogen, C1 to C6 hydroxyalkyl, C1 to C6 halogen substituted alkyl, or a C1 to C6 linear or branched alkyl;
- provided that each R1 in i) and ii) are the same, each R5 in i) and ii) are the same, and each R6 in i) and ii) are the same;
- each R4 in i) and ii) are the same and chosen from hydrogen or a C1 to C6 alkyl, or a C1 to C6 hydroxyalkyl;
- each R7 is independently chosen from a hydroxycarbonyl substituted C1 to C6 alkyl, and oxysulfonylalkyl,
- their corresponding metal and ammonium salts, and mixtures thereof.
12 more elements
Dependencies are inferred from the claim text.