Fluorinated surfactants

Details Fluorinated surfactants Fluorinated surfactants

2005-11-02

2009-06-30

Zucker, Paul A (Department: 1621)

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

Organic compounds

Phosphorus esters

Reexamination Certificate

active

07553985

ABSTRACT:
A composition of formula Iin-line-formulae description="In-line Formulae" end="lead"?[Rf(CH2)m(O)n]x-Ain-line-formulae description="In-line Formulae" end="tail"?whereinRfis a straight or branched perfluoroalkyl group having from about 2 to about 20 carbon atoms, or a mixture thereof,m is a positive integer equal to or greater than 3,n is 0 or 1,x is 1 to about 3,A is —P(O)(OR1)y(OM+)3−y−x, —C(O)CH(SO3−M+)CH2C(O)—, —(CH2CH2O)d(CH2CHR2O)eR3, or —SO2B,M+is an alkali metal ion, NH4+, or NH2+(CH2CH2OH)2,B is N(R2)2or N(CH2CH3)(CH2CH2OH),R1is C1to C3alkyl,R2is C1to C4alkyl,R3is H or CH3,y is 0 to about 1,d is 0 to about 16,e is 0 to about 16, provided that (d+e) is from about 3 to about 16 is disclosed.

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