Patent ID: 8129567
Filing Date: 2012-03-06
Classification: C08G,D06M,Y10T

Abstract:
1. A method of providing soil resistance to a substrate comprising contacting said substrate with a polymer containing at least one urea linkage prepared by (i) reacting (1) at least one organic diioscyanate, polyisocyanate, or mixture thereof, and (2) at least one fluorochemical compound of Formula I wherein R r is 1 to 3, q is 1 to 3, s is 0 or 1, X is O, S, or NR R p is 1 to 50, and R (ii) and then reacting with (3) water, a linking agent, or a mixture thereof, provided that the diisocyanate, polyisocyanate, or mixture thereof comprises one or more cyclic diisocyanates selected from the group consisting of 2,4-toluene diisocyanate; 2,6-toluene diisocyanate; diphenylmethane 4,4′-diisocyanate; diphenylmethane 2,4′-diisocyanate; 3-isocyanatomethyl-3,4,4-trimethylcyclohexyl isocyanate; and bis-(4-isocyanatocylohexyl)methane and diisocyanate trimers of formula (IIa), (IIb):