Abstract: The invention relates to an aqueous biocide composition, containing the following components: (a) 9 wt. % to 20 wt. % 1,2-benzisothiazolin-3-one, (b) a dissolved alkalizing agent, containing 0.95 to 1.05 mol sodium and potassium hydroxide, each based on one mol of the 1,2-benzisothiazolin-3-one present as component (a), and (c) more than 60 wt. % water. The biocide composition is characterized in that the composition: (i) has a pH value in the range of pH 9.5 to pH 11.9, and (ii) the molar fraction of sodium ions, based on the sodium and potassium ions present in the composition, is in the range of 15 to 45 mol %.

Abstract: The invention relates to an aqueous biocide composition, containing the following components: (a) 9 wt. % to 20 wt. % 1,2-benzisothiazolin-3-one, (b) a dissolved alkalizing agent, containing 0.95 to 1.05 mol sodium and potassium hydroxide, each based on one mol of the 1,2-benzisothiazolin-3-one present as component (a), and (c) more than 60 wt. % water. The biocide composition is characterized in that the composition: (i) has a pH value in the range of pH 9.5 to pH 11.9, and (ii) the molar fraction of sodium ions, based on the sodium and potassium ions present in the composition, is in the range of 15 to 45 mol %.

Abstract: The present invention relates to a biocidal composition, which contains 5-chloro-2-methylisothiazolin-3-one and at least one further component chosen from the group consisting of 3-iodo-2-propanyl butylcarbamate, octylisothiazolinone, n-butyl-benzisothiazolinone, phenetyl alcohol, methylparaben, ethylparaben, benzoic acid, sorbic acid, salicylic acid, dehydracetic acid, didecyldimethylammonium chloride, benzalkonium chloride, formaldehyde, glutaraldehyde, (1-hydroxyethylidene)bis-phosphonic acid, N,N-ethylenediamine disuccinate, and polyaspartic acid. The biocidal composition according to the invention is characterized in that it contains methyl-4-isothiazolin-3-one in the range of between 0 and 2 wt. %, in relation to the total amount of 5-chloro-2-methyl-4-isothiazolin-3-one. The invention further relates to the use of the biocidal compositions according to the invention for preserving technical products.

Abstract: A biocide composition, comprising 2-methylisothiazolin-3-one as a biocidal active ingredient and at least one further biocidal active ingredient, as an additive to materials capable of being attacked by harmful microorganisms, wherein the composition comprises a pyrithione as the further biocidal active ingredient.

Abstract: The invention relates to compounds from the groups of (A) electrophiles, (B) nucleophiles, (C) alkylating agents, (D) antioxidants and (E) oxidizing agents as odor preventatives for reducing so-called ghost odor which is induced by 2-methyl-4-isothiazolin-3-one and/or octyl-4-isothiazolin-3-one. The invention further relates to biocide compositions which comprise 2-methyl-4-isothiazolin-3-one and/or octyl-4-isothiazolin-3-one and also one or more odor preventatives, and to the use of odor preventatives for preventing ghost odor.

Abstract: The invention relates to a biocide composition comprising, as active microbicidal components, 2-methylisothiazolin-3-one and also one or more haloalkyl sulphones, said composition being outstandingly suitable as an industrial preservative for protecting industrial products. The invention further relates to the use of haloalkyl sulphones as an additive for reducing “emissions” from compositions containing 2-methylisothiazolin-3-one.

Abstract: The invention relates to compounds from the groups of (A) electrophiles, (B) nucleophiles, (C) alkylating agents, (D) antioxidants and (E) oxidizing agents as odour preventatives for reducing so-called ghost odour which is induced by 2-methyl-4-isothiazolin-3-one and/or octyl-4-isothiazolin-3-one. The invention further relates to biocide compositions which comprise 2-methyl-4-isothiazolin-3-one and/or octyl-4-isothiazolin-3-one and also one or more odour prevenatives, and to the use of odour preventatives for preventing ghost odour.

Abstract: A biocide composition, comprising 2-methylisothiazolin-3-one as a biocidal active ingredient and at least one further biocidal active ingredient, as an additive to materials capable of being attacked by harmful microorganisms, wherein the composition comprises a pyrithione as the further biocidal active ingredient.

Abstract: The invention relates to a coating material for protection against microorganism invasion on surfaces which are exposed to the effects of damp or water. The coating material has either a pH-value of at least 11.0 or is provide with a base material for the coating whereby the pH-value is at least 11. The coating material is characterized in that it contains a biocide which bonds to solid particles in a carrier material and is released in a delayed manner therefrom.

Abstract: A biocidal composition comprising a combination of at least two biocidal components, in which 1,2-benzisothiazolin-3-one and/or N-methyl-1,2-benzisothiazolin-3-one and/or N-methyl-1,2-benzisothiazolin-3-one are used as one component and silver in the form of, for example, organic or inorganic silver salts, colloidal or nanoparticulate silver or silver oxide is used as the other component, has a broad spectrum of activity against diverse bacteria and fingi.

Abstract: A biocide composition is disclosed as an additive to substances susceptible to infestation by harmful organisms, containing 2-methylisothiazolin-3-one as a biocidal agent. The composition is characterized in that it contains 3-iodo-2-propynyl-N-butylcarbamate as a farther biocidal agent, with the exception of biocide compositions containing 5-chloro-2-methylisothiazolin-3-one. In comparison to its individual constituents, the composition provided by the invention presents a synergistic biocidal action.

Abstract: The invention relates to a coating material for protection against microorganisum invasion on surfaces which are exposed to the effects of damp or water. The coating material has either a pH-value of at least 11.0 or is provided with a base material for the coating whereby the pH-value is at least 11.0. The coating material is characterised in that it contains a biocide which bonds to solid particles in a carrier material and is released in a delayed manner therefrom.

Abstract: The invention relates to a biocidal composition which can be added to materials which can be attacked by harmful micro-organisms. The composition comprises 2-methylisothiazoline-3-on as biocidal active ingredient and at least one other biocidal active ingredient. The biocidal composition is characterised in that the composition contains formaldehyde or a formaldehyde-depot material, 2-brom-2-nitro-1,3 propandiol, polyhexamethylene biguanide, o-phenylphenol, pyrithione, n-butyl-1,2-benzisothiazoline-3-on, n-hydroxymenthyl-1,2-benzisothiazoline-3-on or benzalkonium chloride as said other biocidal active ingredient.

Abstract: The invention relates to a biocidal composition which can be added to materials which can be attacked by harmful micro-organisms, containing pyrithione as a biocidal active ingredient. The biocidal composition is characterised in that it contains 2-alkyl isothiazoline-3-one as another biocidally active ingredient. The active ingredients of the biocidal composition behave synergistically and are ideally suitable for controlling bacteria, fungus and algae.

Abstract: There is provided a method for the production of improved biocidal compositions which comprise at least one 3-isothiazolinone of the general formula ##STR1## Y is a hydrogen atom or an unsubstituted alkyl radical having 1 to 18 carbon atoms, a cylo alkyl radical having 5 to 8 carbon atoms, an aralkyl radical having 7 to 11 carbon atoms or an aryl radical having 6 to 10 carbon atoms and R and R' are in each case a hydrogen atom or halogen atom or a C.sub.1 to C.sub.4 -alkyl radical, or, when taken together, R and R' contain an alkylene group to form a hydrocarbon ring, the 3-isothiazolinone being produced in known manner and then stabilized by the addition of a nitrate. The method is characterized by the fact that the mixture obtained upon the production of the 3-isothiazolinone is subjected to an additional stabilization after the addition of the nitrate by storing it at a pH of 0.2 to 2.0 and a temperature of at most 40.degree. C.

Abstract: There is indicated a method for the production of qualitatively improved biocidal or biostatic compositions which comprise water and/or a polar organic solvent and contain at least one 3-isothiazolinone of the general formula ##STR1## in which Y, R and R' have the meanings indicated, the 3-isothiazolinone being produced in known manner and then stabilized by the addition of a nitrate. The method is characterized by the fact that the mixture obtained upon the production of the 3-isothiazolinone is subjected to an additional stabilization after the addition of the nitrate in the manner that it is stored at a pH of 0.2 to 1.5 and a temperature of at most 40.degree. C. for a period of at least 48 hours and then again brought to a higher pH. The compositions produced in this manner have an improved appearance and increased storage stability.