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Preparation method of shampoo composition

A technology of composition and shampoo, which is applied in the preparation of anti-dandruff and antipruritic agents for shampoos, shampoo or conditioner additives, and can solve the problem of low conversion rate of 2-chloro-N-oxypyridine and difficulty in oxidation of pyridine chloride , Pyridine oxidation difficulties and other problems, to achieve high oxidation conversion rate, good anti-dandruff and anti-itch effect, good fullness effect

Active Publication Date: 2021-12-07
戴云
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] It can be clearly seen that the oxidation of 2-chloropyridine is the basic step for preparing ZPT, and its oxidation time is usually 3-5h, and those skilled in the art know that it is difficult to oxidize pyridine, and it is more difficult to oxidize chlorinated pyridine, so by Chloropyridine is converted to its conversion rate of 2-chloro-N-oxypyridine. The conversion rate of 2-chloro-N-oxypyridine is low. For example, Qiu Tao supported phosphotungstic acid to catalyze the synthesis of 2-chloropyridine-N-oxide. The experiment uses the impregnation method to prepare SiO 2 Supported phosphotungstic acid catalyst, with 2-chloropyridine as raw material, H 2 o 2 2-chloropyridine-N-oxide was synthesized as an oxidant, and the effects of phosphotungstic acid loading, catalyst dosage, reactant ratio, reaction temperature, and reaction time on the oxidation reaction were discussed. The optimal process conditions were: phosphotungsten The load of acid is 30%, the amount of catalyst is 3.3%, n(2-chloropyridine):n(H 2 o 2 )=1:6.0, the reaction temperature is 80 o C; the reaction time is 30h, and the yield is as high as 89.8%. It can be clearly seen that the use of traditional catalysts to oxidize 2-chloropyridine not only has a long oxidation time, but also has extremely low oxidation efficiency, which needs to be improved

Method used

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  • Preparation method of shampoo composition
  • Preparation method of shampoo composition
  • Preparation method of shampoo composition

Examples

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preparation example Construction

[0070] The preparation method of the gas diffusion electrode is as follows:

[0071] (1) Preparation of diffusion layer: Mix ammonium bicarbonate, 27.5wt.% PTFE emulsion, and glycerin aqueous solution to obtain a suspension, and then mix the suspension on the pretreated carbon nanotube powder to obtain The paste is rolled and formed, then raised to 245°C at 1°C / min in a muffle furnace, kept at a constant temperature for 35min, and cooled naturally to obtain a 275μm diffusion layer. The mass and dosage of the ammonium nitrate, PTFE emulsion, and carbon nanotube powder The ratio is (15):(65):(55), the dosage of the glycerin aqueous solution is 1.75ml, and the volume ratio of glycerol to water is 1.75:1.

[0072] (2) Pretreatment of the metal mesh layer: the nickel foam was washed sequentially with 0.035M hydrochloric acid, acetone, and deionized water, and then vacuum-dried at 105° C. for 5.5 hours to obtain a metal mesh layer.

[0073] (3) Prepare the catalyst layer: dissolve ...

Embodiment 1

[0079] A preparation method of a shampoo composition, comprising the steps of:

[0080] (A) 5wt.% lauryl ammonium sulfate, 13wt.% ammonium laureth sulfate, 5wt.% cocamidopropyl hydroxysultaine, 1wt.% carbon chain number C8-C14 according to the mass ratio Alkyl polyglucoside and 1wt.% ethylene glycol monostearate were dispersed in deionized water, heated and stirred evenly, and kept at a constant temperature of 70°C.

[0081] (B) Dissolve 0.75 wt.% polyquaternium-10 and 0.4wt.% polydimethylsiloxane in deionized water according to the mass ratio, add it to the solution obtained in step (A), stir evenly, and cool down to a constant temperature 50°C.

[0082] (C) Dissolve 2 wt.% zinc pyrithione, 0.05 wt.% Cathone, 1wt.% essence and 1wt.% amino acid in deionized water according to the mass ratio, add to the solution obtained in step (B), and stir evenly , cooling down to a constant temperature of 35°C.

[0083] (D) Add an appropriate amount of sodium chloride to the solution obt...

Embodiment 2

[0085] A preparation method of a shampoo composition, comprising the steps of:

[0086] (A) 6wt.% lauryl ammonium sulfate, 14.5wt.% ammonium lauryl ether sulfate, 5.5wt.% cocamidopropyl sulfobetaine, 1.25wt.% carbon chain number C8-C14 alkyl polyglucosides and 1.1wt.% ethylene glycol monostearate were dispersed in deionized water, heated and stirred evenly, and kept at a constant temperature of 72.5°C.

[0087] (B) Dissolve 1.1wt.% polyquaternium-10 and 0.45 wt.% polydimethylsiloxane in deionized water according to the mass ratio, add to the solution obtained in step (A), stir evenly, and cool down to a constant temperature 52.5°C.

[0088] (C) Dissolve 3 wt.% zinc pyrithione, 0.075wt.% Cathone, 1.1 wt.% essence and 1.25wt.% amino acid in deionized water according to the mass ratio, add to the solution obtained in step (B), and stir After uniformity, the temperature was lowered to a constant temperature of 37.5°C.

[0089] (D) Add an appropriate amount of sodium chloride to...

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Abstract

The invention provides a preparation method of a shampoo composition. The shampoo with high foamability, stability, appropriate viscosity and small irritation to scalp is obtained by compounding anionic, cationic, amphoteric and nonionic surfactants; chloropyridine is catalyzed and oxidized by diffused oxygen, so that the conversion rate of chloropyridine oxide is improved; the process is extremely short in time consumption; the production efficiency is significantly improved on the premise of maintaining relatively high conversion rate and selectivity; and when a shampoo antidandruff antipruritic ZPT is prepared, the purity and the conversion rate of the product are further improved, wherein the heavy metal content of the ZPT is smaller than 3.5ppm.

Description

technical field [0001] The invention belongs to a preparation method of a shampoo composition, and in particular relates to a preparation method of an anti-dandruff and anti-itch agent for shampoo. The anti-dandruff and anti-itch agent is high-purity zinc pyrithione, which is used to inhibit and kill scalp Fatty fungus, especially for use as an additive in the preparation of shampoos or hair lotions. Background technique [0002] There are some fungal communities in the head skin of normal people. Among them is a kind of Malassezia, which belongs to the unicellular yeast fungus, called Pityrosporum. This kind of bacteria exists widely on human skin. Malassezia may be It can cause skin inflammations such as seborrheic dermatitis, folliculitis, and tinea versicolor. According to reports, at least seven different species of Malassezia have been found in human sebum, including Malassezia globosa, Malassezia symphysis and Malassezia restrictans, etc., and these seven species of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/891A61K8/46A61K8/49A61K8/73A61K8/86A61P31/10A61Q5/00A61Q5/02A61Q17/00C25B3/23C25B3/07C25B3/09C25B3/05C25B9/19C25B11/032C25B11/052
CPCA61K8/731A61K8/891A61K8/86A61K8/4933A61K8/49A61K8/463A61K8/466A61Q5/02A61Q5/006A61Q17/005A61P31/10C25B3/23C25B3/07C25B3/09C25B3/05C25B9/19C25B11/032C25B11/052A61K2800/83
Inventor 邱志新
Owner 戴云
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