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195 results about "Pyrithione" patented technology

Pyrithione is the common name of an organosulfur compound with molecular formula C₅H₅NOS, chosen as an abbreviation of pyridinethione, and found in the Persian shallot. It exists as a pair of tautomers, the major form being the thione 1-hydroxy-2(1H)-pyridinethione and the minor form being the thiol 2-mercaptopyridine N-oxide; it crystallises in the thione form. It is usually prepared from either 2-bromopyridine, 2-chloropyridine, or 2-chloropyridine N-oxide, and is commercially available as both the neutral compound and its sodium salt. It is used to prepare zinc pyrithione, which is used primarily to treat dandruff and seborrhoeic dermatitis in medicated shampoos, though is also an anti-fouling agent in paints.

Antimicrobial and antidandruff composition and application thereof

ActiveCN101966131AImprove the effect of anti-dandruff and sterilizationOvercome the shortcomings of ineffective anti-dandruff, sterilization and anti-itching effectAntibacterial agentsCosmetic preparationsSodium PyrithioneShower gel
The invention discloses an antimicrobial and antidandruff composition and application thereof. The composition comprises a pyrithione polyvalent metal salt and an alkoxy aromatic amidine compound, and preferably comprises zinc pyridine thione and hexamidine isethionate, wherein the weight ratio of the zinc pyridine thione to the hexamidine isethionate in the composition is 1:20-10000:1. The composition can be applied in washing-off systems such as liquid shampoos, hair conditioners, facial cleansers, dermatophytosis removal products or shower gel and the like which have the effects of sterilization and antibiosis. The antimicrobial and antidandruff composition can provide the high-efficiency effect of dandruff removal and sterilization, overcome the defect that the effects of dandruff removal, sterilization and itching relieving are not obvious due to the single use of any one component in the composition under the same condition, and play an excellent role in the dandruff removal, sterilization and itching relieving; and the zinc pyridine thione and the hexamidine isethionate have the synergic effect on the using effect, and the composition is used in products under the same using condition and using amount to reduce the amount used when only single component in the composition is used effectively, so the effects of the dandruff removal and itching relieving can be achieved.
Owner:南京枫华投资管理有限公司

Shampooing cream composition capable of enhancing deposition of anti-dandruff agent

ActiveCN107440935AStrong flocculation strengthHelp to carryCosmetic preparationsHair cosmeticsSodium PyrithioneSuspending Agents
The invention relates to a shampooing composition, and in particular a shampooing cream composition capable of enhancing deposition of an anti-dandruff agent; the composition consists of an anionic surfactant, an ampholytic surfactant, a cationic polysaccharide polymer derivative, zinc pyrithione, a non-volatile conditioning agent, 0.01-10% of a suspending agent and the balance of purified water, wherein the cationic polysaccharide polymer derivative is any one or a compound of the following two derivatives: (i) a cationic cellulose derivative and (ii) a cationic guar gum derivative; the viscosity of a 2% pure water solution of the cationic cellulose derivative is 20000-40000cps and a nitrogen content of the cationic cellulose derivative is 0.8-3.1%; the charge density of the cationic guar gum derivative is 0.5-1.0meq / g and the molecular weight of the cationic guar gum derivative is 400000-1500000g / mol. The shampooing cream composition provided by the invention is good in flocculation phase character and excellent in anti-dandruff agent deposition capacity; and a relatively outstanding anti-dandruff effect is achieved, so that, the shampooing composition, when applied to a user for a long time, can achieve an obvious effect of removing dandruff.
Owner:OPAL COSMETICS HUIZHOU

Method for preparing pyrithione salt dispersed solution by injection coprecipitation method

The invention relates to a method for preparing a pyrithione salt dispersed solution by an injection coprecipitation method, which comprises the following specific steps: a water-soluble salt of pyrithione or pyrithione acid, i.e. a stream A and a water-soluble polyvalent metal salt, i.e. a stream B, are simultaneously led into an injection reactor for fast mixing and reacting, wherein the injection reactor is a tubular reactor, and the stream A and the stream B respectively enter the injection reactor from two feeding holes of the injection reactor; a reacting solution obtained from an outlet of the injection reactor is continuously led into a stirred tank reactor for carrying out further reaction, wherein a surfactant is at least added, the reaction temperature in the injection reactor and the stirred tank reactor is 0-90 DEG C, and the stirred tank reactor can be adopted to intermittently operate or continuously operate; and the pyrithione salt dispersed solution is obtained from the inside of the intermittently-operating stirred tank reactor or the outlet of continuously-operating stirred tank reactor after finishing reacting. The pyrithione salt dispersed solution prepared through the method provided by the invention has the advantages of narrow particle size distribution, small mean particle diameter, good dispersive property and the like.
Owner:SOUTHEAST UNIV
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