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US 9,872,496 B2Granted
Microbicidal preparations based on 1, 2-benzisothiazonlin-3-one with a content of aromatic alcohol
AssigneeAir Liquide Sante (International)
InventorsWolfgang Beilfuss, Gisela Hahn, Klaus Weber, Ralf Gradtke, Wolfgang Siegert
Life of this patent
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Abstract
Microbicidal preparations containing a) at least one 1,2-benzisothiazolin-3-one or its derivatives; b) at least one 2-mercaptopyridine N-oxide, or its salts and derivatives; c) at least one aromatic alcohol; and d) at least one alkalinizing agent, or a preparation prepared by mixing components a) to d), and having a pH of at least 11, are provided. The microbicidal preparations are clear and storage-stable, and are suitable for use as preservatives.
Claims11
A preservative preparation, consisting of:
- (a) 6 to 12% by weight of 1,2-benzisothiazolin-3-one;
- (b) 3 to 9% by weight of 2-mercaptopyridine N-oxide or a salt thereof;
- (c) 5 to 15% by weight of at least one aromatic alcohol, the alcohol selected from the group consisting of phenoxyethanol, phenoxypropanol, benzyl alcohol and mixtures thereof;
- (d) 2 to 7% by weight of at least one alkalinizing agent comprising potassium hydroxide or a mixture of potassium hydroxide and sodium hydroxide;
- and
- (e) 60 to 80% by weight of water,
- wherein the preparation has a pH of at least 11, and is free of algicidal triazines.
4 more elements
Dependencies are inferred from the claim text.