Preparation method of modified and micronized 2-mercaptopyridine oxide zinc salt

A technology of pyrithione and zinc oxide, which is applied in the field of preparation of modified micro-sized 2-pyridine oxide zinc salt, can solve problems such as difficulties in the preparation method, achieve rich performance, overcome difficulties in post-processing, and have low cost Effect
CN101862273AInactive Publication Date: 2010-10-20深圳市矽尔德新材料有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
深圳市矽尔德新材料有限责任公司
Publication Date
2010-10-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of a modified and micronized 2-mercaptopyridine oxide zinc salt. The preparation method comprises the following steps of: firstly, carrying out a coprecipitation reaction on a water-soluble aqueous solution of 2-mercaptopyridine oxide salt and an aqueous solution at least containing zinc ion water-soluble metal salt at 0-99 DEG C in a pH range of 4-9 to obtain a mixed precipitation containing a 2-mercaptopyridine oxide zinc salt precipitation and other insoluble precipitations; and then, mixing and reacting the mixed precipitation with a surface modifier in the pH range of 4-9 to obtain modified micronized 2-mercaptopyridine oxide zinc salt, wherein the mixed precipitation can be purified as required. The invention effectively overcomes the defects of later-period treatment difficulty of a traditional preparation method of the modified and realizes the industrial production of micronized 2-mercaptopyridine oxide zinc salt. The invention also has the advantages of flexible application, enriched 2-mercaptopyridine oxide zinc salt performance, time and labor saving and low cost.
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Description

technical field

[0001] The invention relates to the technical field of chemical industry, in particular to a preparation method of modified micronized 2-mercaptopyridine zinc salt. Background technique

[0002] Polyvalent metal salts of pyrithione are known to be effective biocides and are widely used as antifungal and antibacterial agents in paints and personal care products such as anti-dandruff shampoos. Polyvalent metal salts of pyrithione are only slightly soluble in water, and these salts include magnesium pyrithione, barium pyrithione, strontium pyrithione, 2- Copper pyrithione, zinc pyrithione, chromium pyrithione, and zirconium pyrithione. The most widely used divalent pyrithione salt is the zinc pyrithione salt.

[0003] Zinc salt of pyrithione can be used as an antimicrobial agent active against Gram-positive and negative bacteria, fungi and yeasts, and is widely used in products such as coatings, plastics, rubber, fibers, shampoos or hair conditioners Preserva...

Claims

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