Claims
- 1. A composition having an FIC value less than one which comprises
- a) a 4,5-polymethylene-4-isothiazolin-3-one or a salt thereof, and
- b) a complex of 2-mercaptopyridine-1-oxide with a metal of Group (II)B.
- 2. The composition of claim 1 wherein a) is a compound of formula ##STR8## wherein t is 1 or 2, and
- R.sup.3 is hydrogen or linear or branched alkyl having up to 12 carbon atoms.
- 3. The composition of claim 1 wherein component a) is either 4,5-trimethylene-4-isothiazolin-3-one or 2-methyl 4,5-trimethylene-4-isothiazolin-3-one.
- 4. The composition of claim 1 wherein component b) is a 2:1 complex of 2-mercaptopyridine-1-oxide and zinc.
- 5. The composition of claim 1 which comprises 2-methyl-4,5-trimethylene-4-isothiazolin-3-one and a 2:1 complex of 2-mercaptopyridine-1-oxide and zinc.
- 6. The composition of claim 1 which contains components (a) and (b) in the proportions by weight of from 100:1 to 1:100.
- 7. The composition of claim 1 wherein the sum of the fractional inhibitory concentration of the components is less than 0.7.
- 8. A medium which is susceptible to attack by microorganisms and which contains from 0.0001 to 10% by weight of the medium of a composition comprising
- a) a 4,5-polymethylene-4-isothiazolin-3-one or a salt thereof, and
- b) a metal complex of 2-mercaptopyridine-1-oxide with a metal of Group (II)B.
- 9. A medium as claimed claim 8 which is a cosmetic.
- 10. A method for inhibiting the growth of micro-organisms on, or in, a medium, which comprises treating the medium with a composition comprising
- a) a 4,5-polymethylene-4-isothiazolin-3-one or a salt thereof, and
- b) a metal complex of 2-mercaptopyridine-1-oxide with a metal of Group (II)B.
- 11. A composition according to claim 1 wherein the metal of Group (II)B is zinc.
- 12. A medium according to claim 8 wherein the metal of Group (II)B is zinc.
- 13. A method according to claim 10 wherein the metal of Group (II)B is zinc.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9027614 |
Dec 1990 |
GBX |
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Parent Case Info
This is a continuation of application Ser. No. 07/805,408, filed on Dec. 10, 1991, which was abandoned upon the filing hereof.
Foreign Referenced Citations (2)
Number |
Date |
Country |
2208474 |
Apr 1989 |
GBX |
2230190 |
Oct 1990 |
GBX |
Non-Patent Literature Citations (3)
Entry |
Mar. Advanced Organic Chemistry, Second Edition, p. 1132, McGraw Hill Pub. (1977). |
Noller, Chemistry Of Organic Compounds, Second Edition, pp. 275, 280, Saunders Pub. 1957. |
Reid, Organic Chemistry Of Bivalent, Sulfur, vol. III, p. 376 Chem. Publishing Co., 1960. |
Continuations (1)
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Number |
Date |
Country |
Parent |
805408 |
Dec 1991 |
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