CN116196240B - Hair-loss-preventing and hair-fixing shampoo containing natural plant components and preparation method thereof - Google Patents

Abstract

The invention provides an anti-hair loss and hair-fixing shampoo containing natural plant components and a preparation method thereof, and relates to the field of cosmetics, wherein the shampoo comprises A, B, C, D total 4 phases, and a C phase contains a hair conditioner which comprises the following components: the Chinese arborvitae twig extract, the tuber fleeceflower root extract, the ginseng root extract, the raspberry fruit extract, the angelica root extract, the black sesame extract, the lindera root extract, the radix scrophulariae extract, the gallnut extract, the ginger root extract, the propylene glycol, the glycerol, the methylparaben, the DMDM hydantoin, the bis (hydroxymethyl) imidazolidinyl urea, the phenoxyethanol and the chlorpheniramine. The shampoo prepared by compounding the raw materials has excellent hair loss preventing and fixing effects.

Description

Hair-loss-preventing and hair-fixing shampoo containing natural plant components and preparation method thereof

Technical Field

The invention relates to the field of cosmetics, in particular to an anti-hair loss and hair-fixing shampoo containing natural plant components and a preparation method thereof.

Background

Alopecia refers to the phenomenon of hair loss. The hair which is normally shed is the hair in the withdrawal phase and the resting phase, and the hair which enters the withdrawal phase and the hair which newly enters the growing phase are in dynamic balance continuously, so that the normal quantity of hair can be maintained, and the pathological alopecia is usually the phenomenon of abnormal hair or excessive hair shed caused by viruses, bacteria, hair cell damage caused by high heat and the like. Aiming at the alopecia problem, besides the light diet and the reduction of hair dyeing, the hair dyeing agent is used in the following documents: zhao Ya the methods for preventing and treating alopecia include oral administration of special medicines (such as Simiao powder, siwu decoction and Shengfu decoction), external treatment (such as Shengfu tincture and anti-alopecia pilatory) and comprehensive therapy.

In various methods, the shampoo is safer and milder to use, can prevent and fix hair in daily life, and is a relatively effective prevention means for preventing hair from falling off and fixing hair at present. For example, literature: li Qiufang, dragon's disease, hu Yongzhi, etc. Chinese medicine shampoo has the action mechanism of Chinese medicine and the hair loss preventing effect of Chinese medicine plant shampoo are disclosed in 75-80, and the results show that the Chinese medicine shampoo has excellent hair loss preventing effect, less side effect, less skin allergy, etc.

As further disclosed in patent CN110269911a, the formulation comprises wolfberry fruit, semen cuscutae, raspberry, schisandra fruit, semen plantaginis, ginseng, bighead atractylodes rhizome, poria cocos, liquorice, chinese angelica, ligusticum wallichii, prepared rehmannia root, white peony root, root of red-rooted salvia, safflower, peach kernel, sappan wood, gastrodia tuber, radix saposhnikoviae, caulis polygoni multiflori, mulberry leaf, peppermint, polygonum multiflorum, honeysuckle stem, tree peony bark, biota orientalis, cortex lycii radicis and radix scrophulariae, and the extract prepared by the formulation is used as a main raw material to prepare shampoo or hair nourishing cream, and can be used for transdermally transferring the white hair into black hair, and can effectively eliminate the symptoms of alopecia and hair withering; and has no toxic or side effect on the body. The patent CN109820797A discloses a pure natural traditional Chinese medicine plant shampoo and a preparation method thereof, and the pure natural traditional Chinese medicine plant shampoo is prepared from the following raw materials in parts by weight: 18-30 parts of nine-steamed nine-sun-dried polygonum multiflorum, 15-20 parts of nine-steamed nine-sun-dried rehmannia glutinosa, 12-18 parts of nine-steamed nine-sun-dried sesame seeds, 10-20 parts of ginseng, 10-12 parts of astragalus mongholicus, 8-11 parts of angelica sinensis, 7-13 parts of eclipta alba, 9-13 parts of cacumen biotae, 5-9 parts of glossy privet fruit, 6-11 parts of fructus Broussonetiae, 4-7 parts of fenugreek, 8-14 parts of Chinese honeylocust fruits, 6-9 parts of rosemary, 9-13 parts of aloe, 8-14 parts of raspberries and 7-12 parts of mulberries. The hair-growing and hair-loss-treating liquid is prepared from pure traditional Chinese medicinal materials, has the effects of growing hair and treating alopecia, can solve the alopecia problem of most people at present, and has certain curative effects on head oil, dandruff, itching and hair loss.

However, at present, the existing shampoo with a pure traditional Chinese medicine formula has the problems of poor effect or slow effect, but the pure chemical shampoo has the problems of high irritation to scalp and even damage to scalp tissues and safety.

Aiming at the problems of poor hair loss prevention and fixation effects, strong irritation and the like of the shampoo in the prior art, it is necessary to find a shampoo with small irritation and excellent hair loss prevention and fixation effects.

Disclosure of Invention

Aiming at the problems existing in the prior art, the invention provides the hair loss preventing and hair fixing shampoo containing natural plant components and the preparation method thereof.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

the invention provides shampoo, which comprises the following raw materials of A phase, B phase, C phase and D phase;

the phase a includes: a surfactant;

the phase B comprises: cocoamidomea, glycerol, microcrystalline cellulose, sodium benzoate, stearamidopropyl dimethylamine;

the phase C comprises: conditioning agent for hair, guar hydroxypropyl trimethyl ammonium chloride, citric acid, polyquaternium-10, sodium acetate, sodium chloride and isopropanol;

the D phase comprises: hydrogenated castor oil, sodium methyl cocoyl taurate, cocamidopropyl betaine, lauric acid, phenoxyethanol, parts of polydimethylsiloxane, trideceth-3, trideceth-10, benzyl alcohol, tocopherol, laureth-16, polyquaternium-52, phenoxyethanol, methylparaben, glycerol, 1, 3-propanediol, sodium isostearyl lactate, dichlorobenzyl alcohol, sodium chloride, ethylhexyl glycerol;

the hair conditioner comprises: the Chinese arborvitae twig extract, the tuber fleeceflower root extract, the ginseng root extract, the raspberry fruit extract, the angelica root extract, the black sesame extract, the lindera root extract, the radix scrophulariae extract, the gallnut extract, the ginger root extract, the propylene glycol, the glycerol, the methylparaben, the DMDM hydantoin, the bis (hydroxymethyl) imidazolidinyl urea, the phenoxyethanol and the chlorpheniramine.

Further, the shampoo comprises the following A phases in parts by weight: 130-140 parts of surfactant;

the phase B comprises: 10-13 parts of cocamide MEA, 0.20-0.30 part of glycerol, 0.01-0.05 part of microcrystalline cellulose, 0.01-0.04 part of sodium benzoate and 2.50-3.50 parts of stearamidopropyl dimethylamine;

the phase C comprises: 5-15 parts of hair conditioner, 2.5-2.9 parts of guar hydroxypropyl trimethyl ammonium chloride, 1-1.8 parts of citric acid, 0.8-0.91 part of polyquaternium-10, 0.01-0.03 part of sodium acetate, 0.01-0.03 part of sodium chloride and 0.01 part of isopropyl alcohol;

the D phase comprises: 3.00-4.00 parts of hydrogenated castor oil, 3.00-4.50 parts of methyl cocoyl taurate sodium, 2.00-3.00 parts of cocamidopropyl betaine, 0.30-0.80 part of lauric acid, 0.10-0.25 part of phenoxyethanol, 11.00-12.00 parts of polydimethylsiloxane, 0.30-0.44 part of tridecyl alcohol polyether-3, 0.30-0.45 part of tridecyl alcohol polyether-10, 0.05-0.12 part of benzyl alcohol, 0.0002 part of tocopherol, 0.45-0.52 part of laureth-16, 0.30-0.35 part of polyquaternium-52, 0.10-0.15 part of phenoxyethanol, 0.05-0.10 part of hydroxybenzoate, 0.35-0.55 part of glycerin, 0.15-0.25 part of 1, 3-propanediol, 0.15-0.25 part of sodium isostearyl lactyllactate, 0.10-0.15 part of dimethanol, 4.00-6.00 parts of sodium chloride and 0.08 part of glycerin.

Preferably, the shampoo comprises the following components in parts by weight: 133 parts of a surfactant;

the phase B comprises: 12.00 parts of cocamide MEA, 0.25 part of glycerol, 0.03 part of microcrystalline cellulose, 0.03 part of sodium benzoate and 3.00 parts of stearamidopropyl dimethylamine;

the phase C comprises: 10 parts of hair conditioner, 2.70 parts of guar hydroxypropyl trimethyl ammonium chloride, 1.50 parts of citric acid, 0.91 part of polyquaternium-10, 0.02 part of sodium acetate, 0.02 part of sodium chloride and 0.01 part of isopropanol;

the D phase comprises: 3.50 parts of hydrogenated castor oil, 3.50 parts of sodium methyl cocoyl taurate, 2.31 parts of cocamidopropyl betaine, 0.50 part of lauric acid, 0.15 part of phenoxyethanol, 11.41 parts of polydimethylsiloxane, 0.36 part of trideceth-3, 0.36 part of trideceth-10, 0.09 part of benzyl alcohol, 0.0002 part of tocopherol, 0.47 part of laureth-16, 0.31 part of polyquaternium-52, 0.13 part of phenoxyethanol, 0.07 part of hydroxybenzoate, 0.47 part of glycerol, 0.20 part of 1, 3-propanediol, 0.20 part of sodium isostearyl lactylate, 0.13 part of dichlorobenzyl alcohol, 5.00 parts of sodium chloride and 0.06 part of ethylhexyl glycerol.

Further, the weight ratio of the A, B, C, D phases is 1:1:1:1 in the invention.

Further, the surfactant in the phase A comprises sodium laureth sulfate and/or sodium laurylsulfate.

Further, the hair conditioner comprises the following components in parts by weight: 0.6-1.2 parts of cacumen biotae extract, 0.50-0.80 parts of polygonum multiflorum root extract, 0.50-0.80 parts of ginseng root extract, 0.40-0.80 parts of raspberry fruit extract, 0.40-0.80 parts of angelica root extract, 0.40-0.80 parts of black sesame extract, 0.40-0.80 parts of lindera root extract, 0.40-0.90 parts of figwort root extract, 0.40-0.90 parts of gallnut extract, 0.40-0.90 parts of ginger root extract, 0.02-0.05 parts of propylene glycol, 0.01-0.04 parts of glycerin, 0.01-0.03 parts of hydroxybenzoyl ester, 0.01-0.03 parts of DMDM hydantoin, 0.01-0.03 parts of bis (hydroxymethyl) imidazolidinyl urea, 0.01 parts of phenoxyethanol and 0.005 parts of chlorobenzeneglycoll.

Preferably, the hair conditioner comprises the following components in parts by weight: 0.8 part of cacumen biotae extract, 0.60 part of polygonum multiflorum root extract, 0.60 part of ginseng root extract, 0.50 part of raspberry fruit extract, 0.50 part of angelica root extract, 0.50 part of black sesame extract, 0.50 part of lindera root extract, 0.50 part of radix scrophulariae extract, 0.50 part of gallnut extract, 0.50 part of ginger root extract, 0.03 part of propylene glycol, 0.02 part of glycerol, 0.02 part of hydroxybenzoate, 0.02 part of DMDM hydantoin, 0.02 part of bis (hydroxymethyl) imidazolidinyl urea, 0.01 part of phenoxyethanol and 0.005 part of chlorobenzeneglycol.

Further, the raw materials also comprise preservative, aromatic and colorant.

Preferably, the preservative comprises one or more of piroctone olamine salt, DMDM hydantoin and hexamidine bis (isethionic acid) salt, the fragrance comprises (daily) fragrance, and the colorant comprises caramel color.

Further, in the hair conditioner, the weight ratio of the cacumen biotae extract, the raspberry fruit extract and the gallnut extract is 0.6-1.2:0.4-0.8:0.4-0.9, preferably 0.8:0.5:0.5.

Further, the weight ratio of the hair conditioner, guar hydroxypropyl trimethyl ammonium chloride and stearamidopropyl dimethylamine is 5-12:2.5-2.9:2.5-3.5, preferably 10:2.7:3.

Further, the invention also provides a preparation method of the shampoo, which comprises the following steps:

(1) Mixing the phase A raw materials, stirring and heating, adding the phase B raw materials after complete dissolution, and keeping the temperature to obtain a material A;

(2) Pre-dispersing the C-phase raw material and water until no dough is formed, homogenizing, adding the C-phase raw material and the water into the material A, stirring at constant temperature, and cooling; adding the phase D raw material, stirring uniformly until no solid particles exist, and cooling to obtain the product.

In some embodiments, the method for preparing the shampoo comprises the following steps:

(1) Mixing a surfactant and water, stirring and heating, adding cocoamide MEA, glycerol, microcrystalline cellulose, sodium benzoate, stearamide propyl dimethylamine and water after complete dissolution, and keeping the temperature to obtain a material A;

(2) Pre-dispersing hair conditioner, guar gum hydroxypropyl trimethyl ammonium chloride, citric acid, polyquaternium-10, sodium acetate, sodium chloride, isopropanol and water until no dough is formed, homogenizing, adding into the material A, stirring at constant temperature, and cooling; adding hydrogenated castor oil, sodium methyl cocoyl taurate, cocamidopropyl betaine, lauric acid, phenoxyethanol, polydimethylsiloxane, tridecyl alcohol polyether-3, tridecyl alcohol polyether-10, benzyl alcohol, ethylhexyl glycerol, tocopherol, laureth-16, polyquaternium-52, phenoxyethanol, methylparaben, glycerol, 1, 3-propanediol, sodium isostearyl lactylate, dichlorobenzyl alcohol, sodium chloride, preservative, aromatic, colorant and water, stirring uniformly until no solid particles exist, and cooling to obtain the product.

Further, the temperature of the heating in the step (1) is 80-85 ℃.

Further, the constant temperature in the step (1) is maintained for 15 minutes.

Further, the temperature of the cooling in the step (2) is below 40 ℃.

Further, the constant temperature in the step (2) is performed for 30 minutes, and the amount of water added in the pre-dispersion is 20 times of the total mass of the C-phase raw material.

The invention has the technical effects that:

the shampoo is prepared from natural plant raw materials such as cacumen biotae extract, radix polygoni multiflori extract, ginseng root extract, raspberry fruit extract, angelica root extract and the like, and is matched with A, B, C, D and other various phase raw materials for use together, and compared with pure traditional Chinese medicine shampoo or pure chemical shampoo, the shampoo is safer, has no stimulation and has good anti-hair loss and hair fixing effects.

Detailed Description

Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.

Before the embodiments of the invention are explained in further detail, it is to be understood that the invention is not limited in its scope to the particular embodiments described below; it is also to be understood that the terminology used in the examples of the invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the invention.

Where numerical ranges are provided in the examples, it is understood that unless otherwise stated herein, both endpoints of each numerical range and any number between the two endpoints are significant both in the numerical range. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is to be noted that the arborvitae (PLATYCLADUS ORIENTALIS) leaf extract, polygonum multiflorum (POLYGONUM MULTIFLORUM) root extract, GINSENG (PANAX GINSENG) root extract, raspberry (RUBUS IDAEUS) fruit extract, angelica (ANGELICA POLYMORPHA SINENSIS) root extract, black sesame (SESAMUM INDICUM) extract, lindera (LINDERA STRYCHNIFOLIA) root extract, radix scrophulariae (SCROPHULARIA NINGPOENSIS) extract, gallnut (GALLA RHOIS) extract, ginger (ZINGIBER OFFICINALE) root extract, papaya (COMMON FLOWERINGQUINE FRUIT) extract, PUERARIA LOBATA (puearia LOBATA) extract, rosemary (ROSMARINUS OFFICINALIS) leaf extract used in the present invention are all commercially available products from junli (guangdong) biotechnology limited, and the sources thereof are not particularly limited.

Examples 1-5 the corresponding shampoo formulations are shown in table 1:

table 1 formula (Unit: part) of shampoo in examples 1-5

Comparative example 1

The only difference from example 1 is that the raspberry extract was replaced with an equivalent amount of papaya extract, the nutgall extract was replaced with an equivalent amount of pueraria extract, and the biota orientalis extract was replaced with an equivalent amount of rosemary leaf extract.

Comparative example 2

The difference from example 1 is only that no hair conditioner is added, instead equal amounts of guar hydroxypropyltrimonium chloride and stearamidopropyl dimethylamine are added, i.e. the total amounts of guar hydroxypropyltrimonium chloride and stearamidopropyl dimethylamine in the shampoo are 5 parts and 5 parts respectively.

Comparative example 3

The only difference from example 1 is that no guar hydroxypropyltrimonium chloride was added, instead of adding equal amounts of hair conditioner and stearamidopropyl dimethylamine, i.e. the total amounts of hair conditioner and stearamidopropyl dimethylamine in the shampoo were 6.7 parts and 3.3 parts, respectively.

Comparative example 4

The difference from example 1 is only that stearamidopropyl dimethylamine is not added, instead equal amounts of hair conditioner and guar hydroxypropyl trimethylammonium chloride are added, i.e., the total amounts of hair conditioner and guar hydroxypropyl trimethylammonium chloride in the shampoo are 6.7 parts and 3.3 parts, respectively.

Wherein, the preparation method of the shampoo in the embodiment 1-3 comprises the following steps:

(1) Mixing a surfactant and water, stirring and heating to 80 ℃, adding cocamide MEA, glycerol, microcrystalline cellulose, sodium benzoate, stearamide propyl dimethylamine and water after complete dissolution, and keeping the temperature for 15min to obtain a material A;

(2) Pre-dispersing hair conditioner, guar gum hydroxypropyl trimethyl ammonium chloride, citric acid, polyquaternium-10, sodium acetate, sodium chloride, isopropanol and water (the addition amount of water is 20 times of the total mass of the raw materials) until no dough is formed, homogenizing for 3min, adding into the material A, stirring at constant temperature for 30min, and cooling to below 40 ℃; adding hydrogenated castor oil, sodium methyl cocoyl taurate, cocamidopropyl betaine, lauric acid, phenoxyethanol, polydimethylsiloxane, tridecyl alcohol polyether-3, tridecyl alcohol polyether-10, benzyl alcohol, ethylhexyl glycerol, tocopherol, laureth-16, polyquaternium-52, phenoxyethanol, methylparaben, glycerol, 1, 3-propanediol, sodium isostearyl lactylate, dichlorobenzyl alcohol, sodium chloride, preservative, aromatic, colorant and water, stirring uniformly until no solid particles exist, and cooling to obtain the product.

Examples 4 to 5 and comparative examples shampoo preparation methods were the same as examples 1 to 3, and the raw materials were omitted and replaced according to the formulation.

1. Rat hair growth test

(1) Test animals: the wistar rats are divided into 3 groups (a first group, a second group and a third group) by half, wherein 5 rats are arranged in each group;

(2) The test method comprises the following steps: the back of the rat is uniformly divided into 3 areas (2 cm multiplied by 2 cm) from beginning to end by taking the spine as a central line, the areas are respectively numbered as (1), (2) and (3), after the hair is removed, shampoos of different examples are uniformly applied according to the record of the table 2, the dosage of the shampoos is 0.2mL, and the equivalent physiological saline is applied to the blank area; after 3 weeks, 10 longer hairs were selected for each area, the length was measured, and at the same time, the applied area hairs were collected and weighed, and the results were counted in table 3.

TABLE 2 Back area application

TABLE 3 rat hair length and weight

Research shows that the shampoo has the effect of promoting the growth of rat hair, and when part of plant extracts in the formula are replaced by extracts with certain anti-hair loss and hair fixing effects, such as papaya extracts, pueraria extracts and rosemary extracts, the anti-hair loss and hair fixing effects of the final product are greatly reduced due to the lack of the biota orientalis extracts, the raspberry fruits extracts and the gallnut extracts with synergistic effects in the hair conditioner. In addition, the test also discusses the synergistic effect of the hair conditioner, guar hydroxypropyl trimethyl ammonium chloride and stearamidopropyl dimethylamine, and the result also shows that the synergistic effect of the three is very obvious, and the hair can be effectively conditioned, so that the excellent effects of preventing hair loss and fixing hair are realized.

2. Research test for preventing alopecia of crowd

(1) Test population: 25 volunteers with hair loss number > 100/day;

(2) The test method comprises the following steps: volunteers were randomly divided into 5 groups of 5 persons each, each with shampoo of each example group, men washed their hair once a day, women washed their hair once every two days, combed their hair once a day and a night, and the hair counts were collected at week 0 and at week (day 14) and at week four (day 28), and the results were counted in table 4.

Table 4 daily hair loss condition for the population

According to the research and test invention for preventing alopecia of people, the shampoo provided by the invention can effectively prevent alopecia and realize a good effect of fixing the hair.

Finally, it should be noted that the above description is only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and that the simple modification and equivalent substitution of the technical solution of the present invention can be made by those skilled in the art without departing from the spirit and scope of the technical solution of the present invention.

Claims (3)

1. A shampoo, which is characterized in that: the raw materials comprise a phase A, a phase B, a phase C and a phase D;

the phase A comprises the following components in parts by weight: 697.3 parts of water, 105 parts of sodium laureth sulfate and 45 parts of water, 28 parts of sodium laureth sulfate and 12 parts of water;

the phase B comprises: 12.00 parts of cocamide MEA,4.70 parts of water, 0.25 part of glycerol, 0.03 part of microcrystalline cellulose and 0.03 part of sodium benzoate, 3.00 parts of stearamidopropyl dimethylamine;

the phase C comprises: 10.01 parts of hair conditioner, 2.70 parts of guar hydroxypropyl trimethyl ammonium chloride and 0.3 part of water, 1.50 parts of citric acid, 0.91 part of polyquaternium-10, 0.05 part of water, 0.02 part of sodium acetate, 0.02 part of sodium chloride and 0.01 part of isopropanol;

the D phase comprises: 15 parts of water, 3.50 parts of hydrogenated castor oil, 3.50 parts of sodium methyl cocoyl taurate, 2.31 parts of cocamidopropyl betaine, 0.50 part of lauric acid, 0.15 part of phenoxyethanol and 0.04 part of ethylhexyl glycerol, 11.41 parts of polydimethylsiloxane, 5.76 parts of water, 0.36 part of trideceth-3, 0.36 part of trideceth-10, 0.09 part of benzyl alcohol, 0.02 part of ethylhexyl glycerol and 0.0002 part of tocopherol, 12.03 parts of water, 0.47 part of laureth-16, 0.31 part of polyquaternium-52, 0.13 part of phenoxyethanol and 0.07 part of hydroxybenzoyl ester, 0.47 part of glycerol, 0.20 part of 1, 3-propanediol, 0.20 part of sodium isostearyl lactylate and 0.13 part of dichlorobenzyl alcohol, 5.00 parts of sodium chloride, 0.4 part of piroctone olamine salt, 4 parts of daily use, 2 parts of DMDM hydantoin, 0.8 part of dihexyl sulfonic acid, and 0.4 parts of caramel salt;

wherein, the hair conditioner comprises the following components in parts by weight: 4.4 parts of water, 0.800 parts of cacumen biotae extract, 0.600 part of polygonum multiflorum root extract, 0.600 part of ginseng root extract, 0.500 part of raspberry fruit extract, 0.500 part of angelica root extract, 0.500 part of black sesame extract, 0.500 part of lindera root extract, 0.500 part of radix scrophulariae extract, 0.500 part of gallnut extract, 0.500 part of ginger root extract, 0.025 part of propylene glycol, 0.020 part of glycerol, 0.020 part of hydroxybenzoate, 0.015 part of DMDM hydantoin, 0.015 part of bis (hydroxymethyl) imidazolidinyl urea, 0.010 part of phenoxyethanol and 0.005 part of chlorobenzeneglycol;

extracts of the hair conditioner were purchased from junli biotechnology limited.

2. The method for preparing the shampoo according to claim 1, wherein: the method comprises the following steps:

(1) Mixing the phase A raw materials, stirring and heating, adding the phase B raw materials after complete dissolution, and keeping the temperature to obtain a material A;

(2) Pre-dispersing the C-phase raw material and water until no dough is formed, homogenizing, adding the C-phase raw material and the water into the material A, stirring at constant temperature, and cooling; adding the phase D raw material, stirring uniformly until no solid particles exist, and cooling to obtain the product.

3. The preparation method according to claim 2, characterized in that: the temperature of the heating in the step (1) is 80-85 ℃.