Microbicidal composition
View Patent ↗Synergistic microbicidal compositions containing N-methyl-1,2-benzisothiazolin-3-one and dodecylguanidine, poly(hexamethylene biguanide hydrochloride), sodium pyrithione, sodium ortho-phenylphenate, terbutryn, dimethoxane or 2-(hydroxymethyl)-2-nitropropane-1,3-diol.
1. A microbicidal composition comprising:
(a) N-methyl-1,2-benzisothiazolin-3-one; and
(b) at least one microbicide selected from the group consisting of dodecylguanidine, poly(hexamethylene biguanide hydrochloride), sodium ortho-phenylphenate, terbutryn, dimethoxane and 2-(hydroxymethyl)-2-nitropropane-1,3-diol; wherein a ratio of N-methyl-1,2-benzisothiazolin-3-one to dodecylguanidine is from 1:1 to 1:650, a ratio of N-methyl-1,2-benzisothiazolin-3-one to poly(hexamethylene biguanide hydrochloride) is from 4:1 to 2:1 or from 1:533 to 1:1067, a ratio of N-methyl-1,2-benzisothiazolin-3-one to sodium ortho-phenylphenate is from 1:60 to 1:135, a ratio of N-methyl-1,2-benzisothiazolin-3-one to terbutryn is from 1:100 to 1:110,000, a ratio of N-methyl-1,2-benzisothiazolin-3-one to dimethoxane is from 1:1 to 1:650 and a ratio of N-methyl-1,2-benzisothiazolin-3-one to 2-(hydroxymethyl)-2-nitropropane-1,3-diol is from 3:1 to 1:5.
2. The microbicidal composition of claim 1 in which said at least one microbicide is dodecylguanidine.
3. The microbicidal composition of claim 1 in which said at least one microbicide is poly(hexamethylene biguanide hydrochloride).
4. The microbicidal composition of claim 1 in which said at least one microbicide is sodium ortho-phenylphenate.
5. The microbicidal composition of claim 1 in which said at least one microbicide is terbutryn.
6. The microbicidal composition of claim 1 in which said at least one microbicide is dimethoxane.
7. The microbicidal composition of claim 1 in which said at least one microbicide is 2-(hydroxymethyl)-2-nitropropane-1,3-diol.