Patent ID: 7084129

Claim:
A method for inhibiting microbial growth which comprises contacting a substrate with an antimicrobially effective amount of a composition comprising a mixture conforming to the following structures: (a) wherein; R is alkyl having 8 to 22 carbon atoms; R 1 , R 2 , R 3 and R 4 are independently selected from the group consisting of and H, with the proviso that R 1 , R 2 , R 3 , and R 4 are not all H; R 12 is CH 3 (CH 2 ) n — n is an integer ranging from 0 to 21; and (b) wherein; R is alkyl having 8 to 22 carbon atoms; R 1 , R 2 , R 3 and R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , and R 11 are independently selected from the group consisting of and H, with the proviso that R 1 , R 2 , R 3 , and R 4 are not all H; R 12 is CH 3 (CH 2 ) n — n is an integer ranging from 0 to 21.