Patent ID: 8487098

Claim:
A synergistic antimicrobial composition comprising: (a) flumetsulam; and (b) an isothiazolone biocide selected from the group consisting of 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one and N-n-butyl-1,2-benzisothiazolin-3-one; wherein a weight ratio of flumetsulam to 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one is from 10:1 to 1:10, a weight ratio of flumetsulam to 2-n-octyl-4-isothiazolin-3-one is from 5:1 to 1:3 and a weight ratio of flumetsulam to N-n-butyl-1,2-benzisothiazolin-3-one is from 10:1 to 1:10.