A solution and a method of treating a substrate with the solution is disclosed. The solution includes a polar liquid component and at least 2% by weight based upon the total weight of said solution of an adduct that is different from the polar liquid component. The adduct comprises at least one of:(D) NH2Y(HNCO(AO)XOR)Z1(E) (RO(AO)X CONH)Z2YHNCONHY(HNCO (AO)XOR)Z3 and(F) Y(HNCO(AO)XOR)Z4 whereY is an aromatic core derived from an aromatic isocyanate componentA is an alkylene group selected from the group of ethylene groups, propylene groups, butylene groups, and combinations thereofR is a hydrocarbon group having from 1 to 20 carbon atomsX is at least 6Z1 is at least 1Z2 is at least 1Z3 is at least 1 andZ4 is at least 2.Further, the adduct is substantially free of unreacted isocyanate groups.
