Mixed fluoroalkyl-alkyl surfactants

Details Mixed fluoroalkyl-alkyl surfactants Mixed fluoroalkyl-alkyl surfactants

2007-08-06

2010-06-01

Shiao, Rei-tsang (Department: 1628)

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

Organic compounds

Phosphorus esters

Reexamination Certificate

active

07728163

ABSTRACT:
A surfactant of formula 1in-line-formulae description="In-line Formulae" end="lead"?(Rf-A)a-Q-([B]k—R)b  Formula 1in-line-formulae description="In-line Formulae" end="tail"?whereina and b are each independently 1 or 2;Rfis a linear or branched perfluoroalkyl radical having from 2 to about 20 carbon atoms, optionally interrupted with at least one oxygen;R is a C1to C20linear, branched or cyclic alkyl, or a C6to C10aryl;B is —(CH2CHR1O)x—,k is 0 or 1, x is 1 to about 20,A is —(CH2)m[(CHR1CH2O)]s—[(CH2)m(CH)tCHOH(CH2)m]e—,whereineach m is independently 0 to 3, s is 0 to about 30, t is 0 or 1, and e is 0 or 1,R1is H or CH3,Q is:—OP(O)(O−M+)(O)—,—O—,—S—(CH2)m—C(O)—O—,—SO2—O——CH2CH2O—C(O)CH2C(OH)(V)CH2C(O)O—;—(CH2CH2O)xCH2CH(OH)—(CH2CH2O)x—(CH2)m—Si[OSi(R2)3]2—, —SO2NR2—,—(CH2CH2O)zC(O)CH(SO3−M+)CH2C(O)(OCH2CH2)z—wherein z is 1 to about 15, ora bond when s is a positive integer,V is —C(O)OR3and R3is H, CH3or Rf;R2is C1to C4alkyl, andM+is a Group 1 metal or an ammonium (NHxR2y)+cation wherein x+y=4, and R2is C1to C4alkyl,provided that when Q is —OP(O)(O−M+)(O)— or when Q is —(CH2CH2O)z—C(O)CH(SO3−M+)CH2C(O)(OCH2CH2)z—, then at least one of s or e is a positive integer.

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