Patent ID: 7897553

Claim:
A polymeric biguanide composition comprising less than 18 mol % of terminal amine groups, and 55 mol % or greater of terminal guanidine groups as measured by 13 C NMR, the composition comprising polymeric biguanides of formula (1) and formula (2) wherein the polymeric biguanides of formula (1) and formula (2) account for at least 80 mol % of the total moles of polymeric biguanides in the composition, wherein and each TG is the same or different and is selected from CG or G; R 1 , R 2 and R 3 are divalent radicals of an aliphatic hydrocarbon independently selected from the group consisting of a C 3 -C 12 alkylene, C 4 -C 12 oxyalkylene and C 4 -C 12 thioalkylene; R 4 is selected from the group consisting of a C 2 -C 12 alkylene, C 4 -C 12 oxyalkylene and C 4 -C 12 thioalkylene; and n and m represent a number average of repeat units between 1 and 20.