CN110025552B

CN110025552B - Amino acid shampoo capable of increasing tensile strength and elongation of hair and preparation method thereof

Info

Publication number: CN110025552B
Application number: CN201910367260.5A
Authority: CN
Inventors: 郭玲玲
Original assignee: Guangzhou Meisi Biotechnology Co ltd
Current assignee: Guangzhou Meisi Biotechnology Co.,Ltd.
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2022-04-08
Anticipated expiration: 2039-05-05
Also published as: CN110025552A

Abstract

The invention discloses a shampoo capable of increasing the tensile strength and the elongation of hair, which is prepared from the following raw materials: ammonium lauryl ether sulfate, coco betaine, coco alkyl glucoside, sodium lauroyl sarcosinate, compound plant extract, PEG-7 olive oil, polyquaternium-10, cocoamide monoethanolamine, PEG-120 methyl glucose dioleate, benzoic acid, salicylic acid, glycerol, essence and water. According to the shampoo, the composite plant extract obtained by a specific extraction method is adopted, so that the shampoo has excellent tensile strength and elongation at break.

Description

Amino acid shampoo capable of increasing tensile strength and elongation of hair and preparation method thereof

Technical Field

The invention relates to the field of daily cosmetics, in particular to a shampoo capable of increasing the tensile strength and the elongation of hair and a preparation method thereof.

Background

Hair is a natural polymer fiber with a complex structure composed of keratinized keratinocytes. The main structure in keratinocytes is spindle-shaped keratinized fibers, between which are present varying amounts of stroma, remnant nuclei and melanin granules. Keratinized fibers are composed of a complex network of keratin proteins, layer by layer. Keratin in hair fibers has crystalline and amorphous regions, and the proportion of crystalline portions to the entire fiber is called the crystallinity. The degree of parallelism of the major axis of the macromolecular chains within the hair fiber to the fiber axis is called the degree of orientation. The degree of crystallinity and orientation may characterize the number of ordered regions and the degree of order within the hair fiber. Many properties (e.g., mechanical properties) of polymer fibers depend to a large extent on the aggregation state of the polymer and the manner in which the molecular chains are linked between the respective structural units.

Many factors can adversely affect hair, such as the environment (light, heat, etc.), chemicals (hair coloring, perming, etc.), etc., which can affect the health of hair. The damage to the hair can be broadly classified into the following types according to the external factors causing its change:

(1) physical damage refers to damage to the hair caused by the application of external forces. One of the external forces causing hair damage is the stretching force of the comb and the friction force caused by the teeth of the comb during the combing process. This damage is particularly likely to occur when the hair surface is rough and not easily combed. Dense tooth combs, metal and plastic combs may also increase the chance of comb damage. When the reverse carding is performed against the scale covering direction of the fur skin, the fur skin is lifted so that the peeling is most likely to occur. In addition, the hair cutting force of scissors and blunt objects during hair cutting and various external friction forces on hair.

(2) Chemical damage refers to damage caused by structural changes in keratin, the structural constituent of hair, primarily caused by various chemical reactions in the hair. These chemical reactions include the destruction of the keratin structure of the hair by various permanent wave agents, hair dyes, bleaches and hair straighteners in life. They all penetrate from the fur coat into the cortical structure and perform various functions. The perming and straightening processes are that the reducing substances firstly destroy disulfide bonds in keratin and then are combined again at a new position by an oxidant. The dyeing process is completed by forming high molecular pigment through oxidative polymerization of the oxidation dye in the hair. Bleaching is to use bleaching agent to oxidize melanin substance in hair to achieve bleaching. None of these chemical actions is all that destroys the internal structural components of the hair, causing the necessary damage to the hair.

(3) The heat damage refers to the damage of hair caused by over-high temperature during the hair drier or hair perming process. The high temperature can volatilize water in the hair, so that the hair fiber is dry and weak, and the hair is easy to break under the stretching or friction action of external force.

(4) Ultraviolet radiation in sunlight accumulates to a certain intensity, which can cause changes in hair structure and photodegradation of proteins. Melanin in hair fibers is easily oxidized by sunlight to cause discoloration, and tryptophan, cystine, and tyrosine in keratin structure are also photodegradable. In addition, the hair is exposed to the external environment all day long, various climatic phenomena can cause damage to the hair, and the aging of the hair is accelerated.

Hair damage is mainly manifested by poor hand feel, rough hair surface, yellowing and lusterless hair, poor elasticity, easy-to-break hair after stretching, and the like, and particularly hair shows obvious difference in tensile strength and extensibility after being damaged.

Although there are shampoo products with various formulations in the prior art, the different products have different efficacies. For example, the prior art discloses a chinese patent application entitled "a mild amino acid shampoo and a preparation method thereof", publication number CN 106176270a, and the amino acid shampoo provided by the invention comprises the following components: fatty alcohol polyoxyethylene amine, coco betaine, alkyl glycoside, amino acid surfactant, water-soluble grease, polyquaternium-10, cocamide monoethanolamine, PEG-120 methyl glucose dioleate, benzoic acid, salicylic acid, glycerol, essence and water. The amino acid shampoo has good foaming and foam stabilizing properties, proper cleaning and washing capacity and good moistening effect; the hair after washing is bright, smooth, elastic and good in combing property; is mild to skin, non-toxic, non-irritant, comfortable and soft. However, the shampoo has limited efficacy and is not significant in increasing the tensile strength and elongation of the hair. Therefore, the shampoo product for increasing the tensile strength and the elongation of the hair has good market prospect.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the shampoo capable of increasing the tensile strength and the elongation of hair. The invention is realized by the following technical scheme:

a shampoo for increasing the tensile strength and the elongation of hair is prepared from the following raw materials in percentage by weight: 1-3% of ammonium lauryl alcohol ether sulfate, 1-4% of coco-betaine, 1-5% of coco alkyl glucoside, 2-10% of sodium lauroyl sarcosinate, 3-5% of a composite plant extract, 1-2% of PEG-7 olive oil, 100.1-0.5% of polyquaternium, 0.2-1% of cocoamide monoethanolamine, 0.2-1% of PEG-120 methyl glucose dioleate, 0.01-0.05% of benzoic acid, 0.01-0.05% of salicylic acid, 1-5% of glycerol, 0.3-0.8% of essence and the balance of water.

Preferably, the shampoo for increasing the tensile strength and the elongation of the hair is prepared from the following raw materials in percentage by weight: 2% of ammonium lauryl alcohol ether sulfate, 3% of coco betaine, 2% of coco alkyl glucoside, 5% of sodium lauroyl sarcosinate, 4% of compound plant extract, 2% of PEG-7 olive oil, 0.5% of polyquaternium-100.25, 0.5% of cocoamide monoethanolamine, 0.5% of PEG-120 methyl glucose dioleate, 0.03% of benzoic acid, 0.03% of salicylic acid, 3% of glycerol, 0.5% of essence and the balance of water.

Preferably, the composite plant extract is prepared from ginger, acanthopanax root, geranium and pomegranate bark according to a mass ratio of (1-4): (1-4): (1-4): (1-4) the obtained extract.

Preferably, the preparation method of the composite plant extract comprises the following steps:

(1) weighing ginger, acanthopanax root, geranium and pomegranate rind according to the mass ratio, drying, crushing, adding an ethanol solution with the volume concentration of 75% according to the solid-to-liquid ratio g/mL of 1:30, carrying out ultrasonic-assisted extraction for 50 minutes, filtering, repeatedly extracting filter residues for 1 time, combining filtrates, and concentrating under reduced pressure;

(2) extracting the concentrated solution twice by using equal volume of ethyl acetate, combining the extract solutions, recovering ethyl acetate to half volume, and extracting by using equal volume of sodium hydroxide solution with mass concentration of 4%;

(3) adjusting the pH value of the extract to 4 by using dilute hydrochloric acid, adding a gelatin solution with the mass concentration of 5%, standing overnight, and filtering; collecting precipitate, dissolving with 60% acetone solution, filtering off insoluble substances, and recovering acetone from filtrate;

(4) recovering acetone from the filtrate, loading onto pretreated polyamide chromatographic column, eluting with 3-6 times of column volume of 20%, 40%, 60% and anhydrous ethanol, collecting the anhydrous ethanol eluate, concentrating under reduced pressure, and freeze drying to obtain composite plant extract.

The preparation method of the shampoo for increasing the tensile strength and the elongation of hair comprises the following steps:

(1) adding water into a reaction cylinder, adding ammonium lauryl ether sulfate, stirring and heating to 75-80 ℃, and completely dissolving to obtain a solution A;

(2) adding coco betaine and coco alkyl glucoside into the solution A, uniformly stirring, cooling to 70-75 ℃, and completely dissolving to obtain a solution B;

(3) adding sodium lauroyl sarcosinate, the compound plant extract and polyquaternium-10 into the solution B, uniformly stirring, cooling to 55-65 ℃, adding glycerol, uniformly stirring, and completely dissolving to obtain a solution C;

(4) cooling the solution C to 35-45 ℃, adding PEG-7 olive oil, benzoic acid, salicylic acid and essence, finally adding the cocamide monoethanolamine and the PEG-120 methyl glucose dioleate, uniformly mixing, and discharging to obtain the liquid.

Compared with the prior art, the cosmetic has the beneficial effects that: (1) the composite plant extracts adopted by the shampoo are ginger, acanthopanax root, geranium and pomegranate bark according to the mass ratio (1-4): (1-4): (1-4): (1-4) the obtained extract has unexpected technical effects in the aspect of increasing the tensile strength and the elongation of hair; (2) the compound plant extract obtained by a specific extraction method enables the shampoo of the invention to have excellent tensile strength and elongation at break.

Detailed Description

The present invention will be further specifically described with reference to the following examples.

Example 1:

a shampoo for increasing the tensile strength and the elongation of hair is prepared from the following raw materials in percentage by weight: 2% of ammonium lauryl alcohol ether sulfate, 3% of coco betaine, 2% of coco alkyl glucoside, 5% of sodium lauroyl sarcosinate, 4% of compound plant extract, 2% of PEG-7 olive oil, 0.5% of polyquaternium-100.25, 0.5% of cocoamide monoethanolamine, 0.5% of PEG-120 methyl glucose dioleate, 0.03% of benzoic acid, 0.03% of salicylic acid, 3% of glycerol, 0.5% of essence and the balance of water.

Preferably, the composite plant extract is ginger, acanthopanax root, geranium and pomegranate rind according to a mass ratio of 1: 1: 1: 1, the preparation method comprises the following steps:

The preparation method of the shampoo capable of increasing the tensile strength and the elongation of the hair comprises the following steps:

(1) adding water into a reaction cylinder, adding ammonium lauryl alcohol ether sulfate, stirring and heating to 80 ℃, and completely dissolving to obtain a solution A;

(2) adding coco betaine and coco alkyl glucoside into the solution A, uniformly stirring, cooling to 70 ℃, and completely dissolving to obtain a solution B;

(3) adding sodium lauroyl sarcosinate, the compound plant extract and polyquaternium-10 into the solution B, uniformly stirring, cooling to 55 ℃, adding glycerol, uniformly stirring, and completely dissolving to obtain a solution C;

(4) cooling the solution C to 45 deg.C, adding PEG-7 olive oil, benzoic acid, salicylic acid and essence, finally adding cocamide monoethanolamine and PEG-120 methyl glucose dioleate, mixing well, and discharging.

The shampoo of examples 2-3 and comparative examples 1-8 is prepared according to the same method as example 1, except that the mass ratio of each plant material in the composite plant extract is different, specifically referring to table 1.

TABLE 1

Comparative example 9:

the preparation method of the shampoo is the same as that of the example 1, except that the preparation method of the composite plant extract comprises the step (4) of collecting 40% ethanol eluent, concentrating under reduced pressure, and freeze-drying to obtain the composite plant extract.

First, determine the effect of the composition on the tensile strength of hair

After hair from the same source is washed by 5% sodium lauryl sulfate, the hair is soaked for 30 minutes by 5% sodium hydroxide, after being washed by purified water, the hair is soaked for 15 hours by shampoo solution which is prepared into 1g/L by the shampoos of examples 1-3 and comparative examples 1-8, and the hair is naturally dried after being washed by the purified water.

The tensile force reduction (%) was measured. The tension reduction (%) was measured with a rheometer (Model 200-2J, Fudo Kogyo co., Japan) at 20. + -. 2 ℃ and a relative humidity of 60. + -. 4%. The hair had an original length of 50 mm, a stretch of 5 cm/min and a full scale of 200 gf.

Percent tension reduction was calculated according to the following equation:

tension reduction (%) - (Fo-F1)/(Fo) × 100

Wherein F0 is the initial force required to elongate the fiber by 20%; f1 is the force required to re-stretch the same fiber by 20%. (see N. B. Fair and B. S. Gupta: The use of multiple test methods in The analysis of The effect of cosmetic treatment on The surface properties of human hair, XIVth IFSCC consistency, Barcelona, Vol II, p113-1124 (1986)).

Five hair samples were tested per group for tension reduction (%), and then averaged. The results of the tests are shown in Table 2 below.

TABLE 2

From the test results, the shampoos of examples 1-3 of the present invention have excellent hair stretch-improving properties, wherein example 1 is the most preferred embodiment. It can be concluded from the experimental test data of comparative examples 1-4 that: the plant extracts obtained by compounding the four plant raw materials of the ginger, the acanthopanax root, the geranium and the pomegranate rind are added into the shampoo, so that an unexpected synergistic effect is achieved in the aspect of tension reduction rate. Meanwhile, it can be concluded from the experimental test data of comparative examples 5 to 8 that: the mass ratio of the four plant raw materials of ginger, acanthopanax root, geranium and pomegranate bark is not (1-4): (1-4): (1-4): (1-4), the hair tension reduction rate is greatly reduced. It can be concluded from the experimental test data of comparative example 9 and example 1 that: the compound plant extract obtained by a specific extraction method enables the shampoo of the invention to have excellent tensile strength.

Second, hair lifting Performance test

Testing at 20 deg.C and 45% relative humidity with INSTRON-4466 type strong force tester with a pull-up speed of 15mm min^-1The force resolution was 0.01N, and the elongation at break (%) of 5 hair samples per group was measured and then averaged.

The test results are shown in Table 3 below.

TABLE 3

From the test results, the shampoos of examples 1-3 of the present invention have excellent property of improving the elongation at break of hair, wherein example 1 is the most preferred technical solution. It can be concluded from the experimental test data of comparative examples 1-4 that: according to the invention, the plant extract obtained by extracting the four plant raw materials of ginger, acanthopanax root, geranium and pomegranate rind after compounding is added into shampoo, so that an unexpected synergistic effect is obtained in the aspect of improving the elongation at break of hair. Meanwhile, it can be concluded from the experimental test data of comparative examples 5 to 8 that: the mass ratio of the four plant raw materials of ginger, acanthopanax root, geranium and pomegranate bark is not (1-4): (1-4): (1-4): (1-4), the elongation at break of the hair is greatly reduced. It can be concluded from the experimental test data of comparative example 9 and example 1 that: the compound plant extract obtained by a specific extraction method enables the shampoo of the invention to have excellent breaking elongation.

Claims

1. A shampoo for increasing the tensile strength and the elongation of hair is prepared from the following raw materials in percentage by weight: 2% of ammonium lauryl alcohol ether sulfate, 3% of coco betaine, 2% of coco glucoside, 5% of sodium lauroyl sarcosinate, 4% of compound plant extract, 2% of PEG-7 olive oil, 0.5% of polyquaternium-100.25, 0.5% of cocoamide monoethanolamine, 0.5% of PEG-120 methyl glucose dioleate, 0.03% of benzoic acid, 0.03% of salicylic acid, 3% of glycerol, 0.5% of essence and the balance of water;

the compound plant extract is characterized by comprising the following components in parts by mass: 1: 1: 1, the preparation method comprises the following steps:

(4) recovering acetone from the filtrate, loading onto pretreated polyamide chromatographic column, eluting with 3-6 times of column volume of 20%, 40%, 60% and anhydrous ethanol, collecting the anhydrous ethanol eluate, concentrating under reduced pressure, and freeze drying to obtain composite plant extract;

(2) adding coco betaine and coco glucoside into the solution A, uniformly stirring, cooling to 70 ℃, and completely dissolving to obtain a solution B;