| US 7,550,199 B2 | ||
| Copolymers for stain resistance | ||
| Timothy Edward Hopkins, Wilmington, Del. (US); Stephen Ernest Jacobson, Hockessin, Del. (US); Melea Rena Langley, Ringgold, Ga. (US); and Peter Michael Murphy, Chadds Ford, Pa. (US) | ||
| Assigned to E.I. du Pont de Nemours and Company, Wilmington, Del. (US) | ||
| Filed on Jul. 31, 2006, as Appl. No. 11/496,372. | ||
| Prior Publication US 2008/0022463 A1, Jan. 31, 2008 | ||
| Int. Cl. B32B 27/08 (2006.01) | ||
| U.S. Cl. 428—394 [428/375; 428/378; 525/327.4; 525/327.6; 525/331; 525/333.6; 427/385.5; 427/389.9; 427/393.4] | 9 Claims |
1. A method for imparting resistance to staining to a fibrous substrate comprising contacting said fibrous substrate with
a copolymer comprising the monomers of Formula I
 D is at least one vinyl monomer selected from the group consisting of aryl olefin, alpha olefin and diene,
each M is independently H, Ca, Mg, Al, Na, or K,
each R1 is independently H, C1-C6 alkyl, or C1-C6 hydroxyalkyl, each R2 is independently C6F5, (CH2)mC6H5, (CH2)nSO3H, C6H4SO3H, CH(CH3)CH2CH3, or R3COOH wherein m is 1, n is 1 or 2, and R3 is linear or branched C1-C12 alkyl,
or R1 and R2 are linked together to form a morpholino or pyrrolidino ring,
h1+h2 is h, h is a positive integer,
k is zero or a positive integer,
i and j are each independently zero or a positive integer,
provided that the total of 1) h÷(k+h+i+j) is from about 0.005 to about 0.7, 2) k÷(k+h+i+j) is from about 0.3 to about 0.6,
3) [i+j]÷(k+h+i+j) is 0 to about 0.6, and provided that the sum of 1)+2)+3) is 1.0,
said monomers occurring in any sequence.
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