Fluorinated surfactants
View Patent ↗A composition of formula I [Rf(CH2)m(O)n]x-A wherein R f is 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)(OR 1 ) y (OM + ) 3−y−x , —C(O)CH(SO 3 − M + )CH 2 C(O)—, —(CH 2 CH 2 O) d (CH 2 CHR 2 O) e R 3 , or —SO 2 B, M + is an alkali metal ion, NH 4 + , or NH 2 + (CH 2 CH 2 OH) 2 , B is N(R 2 ) 2 or N(CH 2 CH 3 )(CH 2 CH 2 OH), R 1 is C 1 to C 3 alkyl, R 2 is C 1 to C 4 alkyl, R 3 is H or CH 3 , 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.
1. A composition of formula I
[Rf(CH 2 )m(O)n]x-A
wherein
R f is 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 1,
x is 1 to 2, and
A is —P(O)(OR 1 ) y (OM + ) 3−y−x ,
M + is an alkali metal ion, NH 4 + , or NH 2 + (CH 2 CH 2 OH) 2 ,
R 1 is C 1 to C 3 alkyl, and
R 2 is C 1 to C 4 alkyl,
R 3 is H or CH 3 ,
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.
2. The composition of claim 1 wherein n is 1, x is 1 to 2, and A is P(O)(OR 1 ) y (OM + ) 3−y−x wherein y is 0 to 1, and M + is an alkali metal ion.
3. The composition of claim 1 further comprising a surface treatment agent.
4. The composition of claim 3 wherein the surface treatment agent provides a surface effect with or without ironing which is shrinkage control, wrinkle free, permanent press, moisture control, softness, strength, anti-slip, antistatic, anti-snag, anti-pill, stain repellency, stain release, soil repellency, soil release, water repellency, oil repellency, odor control, antimicrobial, or sun protection.
5. A method of lowering the tension at the surface of contact between two phases comprising contacting said surface with a composition of Formula I
[R f (CH 2 ) m (O) n ] x -A
wherein
R f is 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 1,
x is 1 to 2 , and
A is —P(O)(OR 1 ) y (OM + ) 3−y−x ,
M + is an alkali metal ion, NH 4 + , or NH 2 + (CH 2 CH 2 OH) 2 ,
R 1 is C 1 to C 3 alkyl,
R 2 is C 1 to C 4 alkyl,
R 3 is H or CH 3 ,
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.
6. The method of claim 5 wherein the composition acts as a leveling agent.
7. The method of claim 5 wherein the phases are each independently a fibrous surface or a hard surface.
8. The method of claim 5 wherein the composition is applied as a coating to a surface.