Patent ID: 7459167

Claim:
A polymeric composition comprising a polyurethane polymer derived from a polyisocyanate compound and a polyactive hydrogen compound, said polyurethane having an effective amount of covalently bound, antimicrobially active ammonium groups pendant to the polyurethane polymer in a terminal position and/or as a side chain along the polyurethane polymer backbone, wherein the antimicrobially active ammonium group is derived from a compound of the formula (I): [CH 3 (CH 2 ) x (C(O)NH(CH 2 ) y ) p ] q N ⊕ (R 4 ) m —(CH 2 ) z LHQ ⊖ (I) wherein: m is 1 or 2; p is 1; and q=1 or 2 provided that m+q=3; x is 6 to 20; y is 2-8; z is 2-10; L is O, S, NR 5 or NH; where R 5 is C 1-4 alkyl or benzyl; each R 4 is independently C 1-4 alkyl, phenyl or C 6-8 aralkyl; and Q ⊖ is halogen, alkyl sulfate, or carboxylate, sulfonate, sulfate, phosphonate or phosphate; or an alkylaminoacrylate compound of the formula (II): wherein: R 1 is H or CH 3 ; R 5 is a C 2-8 alkylene; Q ⊖ is a halogen, alkyl sulfate, alkylsulfonate or carboxylate; Z ⊕ is −N ⊕ (R 4 ) 2 R 3 ,−N ⊕ R 4 (R 3 ) 2 , wherein: R 3 is C 8-20 alkyl, benzyl, or substituted benzyl; each R 4 is independently C 1-4 alkyl, phenyl or C 6-8 aralkyl; and R 6 is H or C 1-4 alkyl.