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Synergetic biocidal compositions comprising 5-chlorine-2-methylisothiazolin-3-one

A technology of methylisothiazoline and octylisothiazolinone, which is applied in the field of synergistic biocidal compositions containing 5-chloro-2-methylisothiazolin-3-one, can solve problems such as allergies, and achieve The effect of reducing the risk of allergies

Inactive Publication Date: 2019-10-11
THOR GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has a broad-spectrum biocidal effect but has various disadvantages in practice
For example, the compound may trigger allergies in people who handle it

Method used

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  • Synergetic biocidal compositions comprising 5-chlorine-2-methylisothiazolin-3-one
  • Synergetic biocidal compositions comprising 5-chlorine-2-methylisothiazolin-3-one
  • Synergetic biocidal compositions comprising 5-chlorine-2-methylisothiazolin-3-one

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0032] According to one embodiment, the present invention relates to a biocidal composition comprising 5-chloro-2-methylisothiazolin-3-one and 3-iodo-2-propynylbutylcarbamate (IPBC). The biocidal composition according to the invention is characterized in that, based on the total amount of 5-chloro-2-methyl-4-isothiazolin-3-one, it contains 0-2% by weight of methyl-4-iso Thiazolin-3-ones.

[0033] According to a preferred embodiment, the present invention relates to a biocidal composition containing 5-chloro-2-methylisothiazolin-3-one and 3-iodo-2-propynylbutylcarbamate, wherein The weight ratio of 5-chloro-2-methylisothiazolin-3-one to 3-iodo-2-propynylbutylcarbamate is usually 3:1 to 1:3,000, preferably 2:1 to 1 :1,500, particularly preferably 1:1 to 1:1,000. The biocidal composition according to the invention is characterized in that, based on the total amount of 5-chloro-2-methyl-4-isothiazolin-3-one, it contains 0-2% by weight of methyl-4-iso Thiazolin-3-ones.

[0034]...

Embodiment 1a

[0132] Example 1a: Study on the Synergistic Interaction Between Chloro-2-methyl-4-isothiazolin-3-one (CMIT) and 3-iodo-2-propynylbutylcarbamate (IPBC)

[0133] The synergy coefficient of chloro-2-methyl-4-isothiazolin-3-one (CMIT) and IPBC was calculated for Pseudomonas putida incubated at 30°C for 48 hours.

[0134] Table 1a

[0135]

[0136] Qa: the concentration of CMIT in the mixture indicating the endpoint

[0137] QA: Concentration of CMIT as sole reagent indicating endpoint

[0138] Qb: the concentration of IPBC in the mixture indicating the endpoint

[0139] QB: the concentration of IPBC as the only reagent indicating the endpoint

[0140] From Table 1a it can be seen that the best synergy, ie the lowest synergy coefficient (0.68) for the biocidal combination of CMIT and IPBC is the ratio of 0.75 ppm CMIT to 300 ppm IPBC. Synergy can be demonstrated when the weight ratio of biocide CMIT and IPBC is in the range of 1:67 to 1:3,000.

Embodiment 1b

[0141] Example 1b: Study on the Synergistic Interaction Between Chloro-2-methyl-4-isothiazolin-3-one (CMIT) and 3-iodo-2-propynylbutylcarbamate (IPBC)

[0142] Synergy coefficients of chloro-2-methyl-4-isothiazolin-3-one (CMIT) and IPBC were calculated for Yarrowia lipolytica incubated at 25°C for 48 hours.

[0143] Table 1b

[0144]

[0145] Qa: the concentration of CMIT in the mixture indicating the endpoint

[0146] QA: Concentration of CMIT as sole reagent indicating endpoint

[0147] Qb: the concentration of IPBC in the mixture indicating the endpoint

[0148] QB: the concentration of IPBC as the only reagent indicating the endpoint

[0149] From Table 1b it can be seen that the best synergy, ie the lowest synergy coefficient (0.60) for the biocidal combination of CMIT and IPBC is the ratio of 0.75ppm CMIT to 0.75ppm IPBC. Synergy can be demonstrated when the weight ratio of biocide CMIT and IPBC is in the range of 3:1 to 1:3.5.

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PUM

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Abstract

The invention relates to a biocidal composition, which contains 5-chlorine-2-methylisothiazolin-3-one and at least one further component chosen from the group comprising 3-iodine-2-propanyl butyl carbamate, octylisothiazolinone, n-butyl-benzisothiazolinone, phenetyl alcohol, methylparaben, ethylparaben, benzoic acid, sorbinic acid, salicylic acid, dehydracetic acid, didecyldimethylammoniumchloride, benzalkoniumchloride, formaldehyde, glutaraldehyde, (l-hydroxyethylidene)bis-phosphonic acid, n,n-ethylendiaminedisuccinate, and polyaspartic acid. The biocidal composition according to the invention is characterized in that the composition contains methyl-4-isothiazolin-3-one in the region of between 0-2 wt%, in relation to the total proportion of 5-chlorine-2-methyl-4-isothiazolin-3-ones. Theinvention further relates to the use of the biocidal compositions according to the invention for conserving technical products.

Description

technical field [0001] The present invention relates to a biocidal composition comprising 5-chloro-2-methylisothiazolin-3-one and at least one additional component selected from the group consisting of 3-iodo-2- Proynyl Butylcarbamate, Octylisothiazolinone, N-Butyl-Benzisothiazolinone, Phenylethyl Ethanol, Methylparaben, Ethylparaben, Benzoic Acid, Sorbitol Acid, salicylic acid, dehydroacetic acid, didecyldimethylammonium chloride, benzalkonium chloride, formaldehyde, glutaraldehyde, (1-hydroxyethylidene)bisphosphonic acid, N,N-ethylenediamine The group consisting of disuccinate and polyaspartic acid. The biocidal composition according to the invention is characterized in that, based on the total amount of 5-chloro-2-methyl-4-isothiazolin-3-one, it contains 0-2% by weight of methyl-4-iso Thiazolin-3-ones. The invention also relates to the use of the biocidal composition according to the invention for preserving industrial products. Background technique [0002] Industria...

Claims

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Application Information

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IPC IPC(8): A01N43/80A01N47/12A01N31/04A01N37/40A01N37/10A01N37/06A01N35/02A01N37/44A01N37/46A01P1/00
CPCA01N43/80A01N33/12A01N35/02A01N37/00A01N37/06A01N37/10A01N37/40A01N37/44A01N37/46A01N39/04A01N43/16A01N47/12A01N57/20A01N25/02A01N31/02A01N31/04A01N37/04A01N57/12
Inventor R·鲍姆T·文德尔H-J·施密特P·E·哈恩
Owner THOR GMBH
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