FLUOROPOLYMER COMPOSITIONS AND TREATED SUBSTRATES
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Abstract
A polymer having at least one carbamate linkage prepared by: (i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, and (b) at least one fluorinated compound selected from the formula (I):
Rf(CH2)x[(CF2CF2)y(CH2CH2)z]m(R1)r—XH (I)
wherein
- Rf is a perfluoroalkyl group having 1 to about 6 carbon atoms;
- subscript x is 1 to about 6;
- subscripts y, z and m are each independently 1, 2 or 3, or a mixture thereof;
- subscript r is 0 or 1;
- the total number of carbons in said formula (I) excluding (R1)r—XH ranges from about 8 to about 22;
- X is —O—, —NR—, —S—, —S(CH2)tO—, or —S(CH2)tNR—;
- subscript t is from 1 to about 10;
- R is H or C1-4 alkyl;
- R1 is certain divalent radicals;
- n is 2 to 4;
- s is 1 to about 50;
- R2, R3, and R4 are each independently hydrogen or a C1-C6 alkyl group; and
- (ii) optionally reacting with (c) water, a linking agent, or a mixture thereof.
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Citations
23 Claims
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1. (canceled)
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14. A method of providing water repellency, oil repellency, soil resistance, hydrophilic stain release, and wicking to substrates comprising contacting said substrate with a polymer having at least one carbamate linkage prepared by:
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(i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, having isocyanate groups, and (b) at least one fluorinated compound selected from the formula (I);
Rf(CH2)x[(CF2CF2)y(CH2CH2)z]m(R1)r—
XH
(I)wherein Rf is a linear or branched chain perfluoroalkyl group having 1 to about 6 carbon atoms; subscript x is an integer from 1 to about 6; subscripts y, z and m are each independently 1, 2 or 3, or a mixture thereof; subscript r is 0 or 1; the total number of carbons in said formula (I) excluding (R1)r—
XH ranges from about 8 to about 22;X is —
O—
, —
NR—
, —
S—
, —
S(CH2)tO—
, or —
S(CH2)tNR—
;subscript t is from 1 to about 10; R is H or C1-4 alkyl; R1 is a divalent radical selected from the group consisting of S(CH2)n—
, - View Dependent Claims (15, 16, 17)
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18. A substrate to which has been applied a polymer having at least one carbamate linkage prepared by:
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(i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, having isocyanate groups, and (b) at least one fluorinated compound selected from the formula (I);
Rf(CH2)x[(CF2CF2)y(CH2CH2)z]m(R1)r—
XH
(I)wherein Rf is a linear or branched chain perfluoroalkyl group having 1 to about 6 carbon atoms; subscript x is an integer from 1 to about 6; subscripts y, z and m are each independently 1, 2 or 3, or a mixture thereof; subscript r is 0 or 1; the total number of carbons in said formula (I) excluding (R1)r—
XH ranges from about 8 to about 22;X is —
O—
, —
NR—
, —
S—
, —
S(CH2)tO—
, or —
S(CH2)tNR—
;subscript t is from 1 to about 10; R is H or C1-4 alkyl; R1 is a divalent radical selected from the group consisting of —
S(CH2)n—
, - View Dependent Claims (19, 20, 21, 22, 23)
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Specification