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Pypithione biocides enhanced by zinc metal ions and organic amines

A technology of pyrithione and organic amines, which is applied in the field of pyrithione biocides synergized with zinc metal ions and organic amines, can solve the problems of undisclosed antimicrobial or antibiofilm effects, and achieve less decolorization tendency, high potency effect

Inactive Publication Date: 2007-10-10
ARCH CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, similar to the above patent, this patent does not disclose any improved or enhanced antimicrobial or antibiofilm effect of the resulting solubilized pyrithione salt compared to hydroxypyridone alone

Method used

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  • Pypithione biocides enhanced by zinc metal ions and organic amines
  • Pypithione biocides enhanced by zinc metal ions and organic amines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-40

[0147] Example 1-40 Sodium pyrithione, ZnCl 2 Antimicrobial effectiveness of the mixture with amines in metalworking fluids

[0148] Prepare an autoclaved 250ml Erlenmeyer flask with cheesecloth stopper, and add one of the metalworking fluids diluted below 100ml (1:20) to each flask: (1) soluble oil, (2) semi-synthetic Liquid, or (3) synthetic liquid. Each of these liquids is designed to simulate commercially available soluble, semi-synthetic and synthetic oils available from manufacturers.

[0149] The soluble oil is prepared from the following ingredients:

[0150] 100SUS naphthenic petroleum basic raw material 82.5%

[0151] 62% active sodium sulfonate 11.0%

[0152] Oleic acid 1.5%

[0153] Triethanolamine (TEA) 1.0%

[0154] Tallow methyl ester 3.0%

[0155] Glycol ether 1.0%

[0156] The semi-synthetic liquid is prepared from the following ingredients:

[0157] 100SUS naphthenic petroleum basic raw material 5.0%

[0158] 62% sodium sulfonate 10.0%

[0159] TEA 15.0%

[0160]...

Embodiment 41-51

[0174] Examples 41-51 Sodium pyrithione, ZnCl 2 The biocidal effect of the mixture with amine against authigenic microorganisms and biofilm-related microorganisms in metalworking fluids

[0175] Two 5-gallon glass culture tanks were disinfected with bleach and simulated as a recirculating metalworking fluid system. Connect a water pump to each culture tank to circulate the fluid in the culture tank. In order to provide a sample surface for biofilm growth, a stainless steel washer (1.2cm 2 Surface area) and polycarbonate disc gasket (3.8cm 2 Surface area) attached to the slide washer holder with two adhesive pad tapes. Place two steel washers and polycarbonate washers on a stand. Add 12.5 liters of diluted (1:20) semi-synthetic metalworking fluid to each culture tank.

[0176]Culture tank 1 was used as an untreated control group. The mixture D (16% NaPT, 2% ZnCl 2 , 20% monoethanolamine, 20% 3-amino-1-propanol) is added to the culture tank 2 until the final concentration is 1250PPM...

Embodiment 52

[0181] Implement 52 sodium pyrithione, ZnCl 2 The biocidal effect of a mixture of amine, amine and formaldehyde releasing biocide against microorganisms in metalworking fluids

[0182] Conduct experiments to compare sodium pyrithione and ZnCl in metalworking fluids 2 , A mixture of monoethanolamine and hexahydro-1,3,5-tris(2-hydroxyethyl)-s-triazine (formaldehyde release agent) with sodium pyrithione and hexahydro-1,3,5-tri( The biocidal efficacy of a mixture of 2-hydroxyethyl)-s-triazine.

[0183] Prepare a sterile glass culture tube (16mm×150mm) containing 3ml of 5% soluble oil MWF or 5% semi-synthetic metalworking fluid. Add an appropriate amount of 40% sodium pyrithione, 78.5% hexahydro-1,3,5-tris(2-hydroxyethyl)-s-triazine or mixture A (10% sodium pyrithione, 1.8 %ZnCl 2 And 60.5% monoethanolamine) to produce a mixture of different biocides and a control for each biocide. Add bacteria and fungi to each tube to a final concentration of 10 7 Bacteria / ml and 10 5 Fungal spores / m...

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PUM

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Abstract

The invention is composed of 0.5%-30% thiouracil or thiouracil complex, 0.1%-10% zinc source and 30%-80% organic amine. The percentage above is based on weight of concentrate of combination.

Description

Technical field [0001] The present invention relates to a pyrithione biocide, in particular to a stable and soluble biocidal composition exhibiting an enhanced biocidal effect, the composition comprising an effective combination of antimicrobial pyrithione, sulfhydryl Pyridine salt or pyrithione adduct, zinc source such as zinc alloy, zinc oxide, zinc hydroxide or zinc salt, and 1,2-1,3 alkanolamine and 1,2-1,3-alkyl Diamine. The biocidal composition is provided in the form of a biocidal composition concentrate suitable for direct addition to a functional fluid (such as a metalworking fluid) or a "master batch" of a functional fluid. Background technique [0002] Known pyrithione (also known as 1-hydroxy-2-pyridinethione; 2-pyridinethiol-1-oxide; 2-pyridinethione; 2-pyridinethione-N-oxide; pyrithione; And pyrithione-N-oxide) polyvalent metal salts are effective biocides and are widely used as fungicides and bactericides for paints and metalworking fluids. Pyridine may also be use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/34A01P3/00A01N59/16
CPCA01N59/16A01N43/40A01N33/08A01N33/04A01N2300/00
Inventor M·L·利奥克斯D·T·希科格纳尼T·J·帕里斯P·A·特雷
Owner ARCH CHEM INC
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