Shampoo with repairing and smoothing functions

Abstract

The invention relates to the technical field of washing products, and provides a shampoo with repairing and smoothing functions, which comprises the following raw materials in percentage by mass: 5-9% of sodium laureth sulfate, 3-7% of ammonium lauryl sulfate, 1-3% of urea, 1-3% of coconut oil ester aminopropyl betaine, 0.5-1.5% of essence, 0.3-0.7% of sodium chloride, 0.3-0.7% of salicylic acid and the balance of water. The cleaning agent is prepared from the following components in percentage by weight: 0.2 to 0.6 percent of allantoin, 0.1 to 0.5 percent of phenoxyethanol, 0.1 to 0.5 percent of guar gum hydroxypropyl trimethyl ammonium chloride, 0.1 to 0.5 percent of grapefruit peel oil, 0.1 to 0.14 percent of sodium hydroxide, 1.2 to 1.8 percent of compound amino acid, 0.4 to 0.6 percent of plant extract, 0.12 to 0.24 percent of nonionic surfactant, 0.3 to 0.4 percent of other trace components and the balance of water. The shampoo provided by the invention not only has good repairing and smoothing functions, but also has good stability.

Description

Technical Field

[0001] The present invention relates to the field of hair care products, in particular to a shampoo with hair repairing and smoothing functions. Background Art

[0002] Hair problems such as dryness, graying, split ends, frizz, and dullness have made shampoo no longer limited to cleaning purposes. Its types and functions are becoming more and more diverse, especially for repairing and smoothing hair. However, most shampoo products on the market currently have relatively single functions and cannot meet consumers' needs for hair washing and hair care.

[0003] Currently, most shampoos contain silicone oil as a smoothing agent. However, silicone oil's sole function is to smooth the hair scales by adsorbing polysiloxane onto the hair surface, thereby regularizing the hair texture and improving the hair's appearance. It has no repairing effect on damaged hair and can easily accumulate and leave residue. Furthermore, the stability of shampoos currently on the market still needs to be improved.

[0004] Patent CN 117100655 A discloses a conditioning shampoo comprising ingredients such as a chelating agent, a cationic conditioning agent, multiple surfactants, a moisturizer, an anti-inflammatory agent, silicone oil, and a preservative. The shampoo disclosed in this application utilizes a combination of multifunctional shampoo components to cleanse the hair and scalp while nourishing and repairing the hair itself. The shampoo is also easy to lather and rinse. However, the silicone oil component used in this application is prone to accumulation and residue, which can cause the hair to lose its luster.

[0005] Therefore, there is an urgent need for a stable shampoo with good repairing and smoothing functions on the market. Summary of the Invention

[0006] In response to the problems existing in the prior art, the present invention uses sodium lauryl polyether sulfate and ammonium lauryl sulfate as the main components of the shampoo, combines them with ingredients such as urea, allantoin, complex amino acids and plant extracts, and designs and synthesizes a modified acrylate copolymer to synthesize a stable shampoo with repairing and smoothing functions.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] On one hand, the present invention provides a shampoo with a repairing and smoothing function. The shampoo comprises the following raw materials, calculated by mass percentage: 5-9% sodium laureth sulfate, 3-7% ammonium lauryl sulfate, 1-3% urea, 1-3% cocamidopropyl betaine, 0.5-1.5% essence, 0.3-0.7% sodium chloride, 0.3-0.7% salicylic acid, 0.2-0.6% allantoin, 0.1-0.5% phenoxyethanol, 0.1-0.5% guar hydroxypropyltrimonium chloride, 0.1-0.5% grapefruit peel oil, 0.1-0.5% sodium hydroxide, 1.2-1.8% complex amino acids, 0.4-0.6% plant extracts, 0.12-0.24% nonionic surfactants, 0.3-0.4% other trace ingredients, and the balance being water.

[0009] The applicant combines urea, allantoin, complex amino acids and plant extracts in a certain mass ratio and applies them to the shampoo. Urea has the characteristics of mild moisturizing and low irritation, and is suitable for sensitive scalps, dry hair, and hair damaged by perming and dyeing. It can deeply moisturize the hair and form a moisturizing protective film barrier on the scalp. It can also increase hair toughness and reduce split ends and hair breakage. Allantoin has a moderate moisturizing effect and can form a thin moisturizing film on the surface of the hair to help the hair lock in an appropriate amount of moisture, keep the hair moderately hydrated, improve minor dryness problems, make the hair look more shiny, and to a certain extent assist in repairing minor damage to the hair scales. In addition, allantoin can also promote the absorption of amino acid nutrients in the shampoo. The complex amino acids mainly play the role of cleaning and removing dirt, nourishing and repairing hair gaps and scales, moisturizing and locking moisture, and anti-static effects. The plant extracts can moisturize, anti-oxidize, antibacterial, repair hair damage and soothe the scalp. The combination of these four natural substances is not only natural and environmentally friendly, with a mild effect, but also can make the shampoo have good repair and smoothing functions.

[0010] In some embodiments of the present invention, the raw material further comprises 0.05-0.15% of a modified acrylic ester copolymer, calculated as 100% by mass.

[0011] In some embodiments of the present invention, the method for preparing the modified acrylate copolymer comprises the following steps:

[0012] (1) Add β-cyclodextrin and p-toluenesulfonyl imidazole to deionized water, stir for 4-6 hours, add sodium hydroxide aqueous solution, stir for 5-15 minutes, filter, take the filtrate, neutralize, filter, wash, and dry to obtain product 1 for use;

[0013] (2) mixing the product 1 of step (1) with molten piperazine, stirring at 75-85° C. for 23-25 ​​h, adding deionized water, stirring, precipitating with acetone, and drying to obtain product 2 for later use;

[0014] (3) Glycidyl methacrylate and the product 2 of step (2) were added to DMF, inert gas was introduced, and the mixture was stirred at 55-65° C. for 23-25 ​​h, precipitated with acetone, and dried to obtain the product 3 for later use;

[0015] (4) adding hexadecyltrimethylammonium bromide and fatty alcohol polyoxyethylene ether into deionized water and stirring to obtain solution 1 for use; adding octadecyl methacrylate and trifluoropentyl methacrylate into solution 1 and stirring to obtain solution 2 for use; then mixing 2-ethylbutyl acrylate, the product 3 of step (3) and N-hydroxymethyl acrylamide, stirring, adding the mixture into solution 2, stirring at 45-55° C. for 20-40 minutes, and then ultrasonicating at 0-5° C.; adding an initiator, and reacting under an inert atmosphere to obtain a modified acrylate copolymer;

[0016] Wherein, in the step (1), the mass ratio of β-cyclodextrin to p-toluenesulfonyl imidazole is 1:(0.1-0.4); in the step (2), the mass ratio of product 1 to molten piperazine is 1:(1-2).

[0017] In some embodiments of the present invention, in step (3), the ratio of glycidyl methacrylate to product 2 is 1 ml: (1.5-2.5) g.

[0018] Preferably, in step (3), the ratio of glycidyl methacrylate to product 2 is 1 ml:2 g.

[0019] In some embodiments of the present invention, in step (4), the mass ratio of 2-ethylbutyl acrylate, octadecyl methacrylate, trifluoropentyl methacrylate and product 3 is 1:(9-11):(7-9):(3-5).

[0020] Preferably, in step (4), the mass ratio of 2-ethylbutyl acrylate, octadecyl methacrylate, trifluoropentyl methacrylate and product 3 is 1:10:8:4.

[0021] Acrylate copolymers added to shampoo can play a good role in thickening, suspension stability, enhancing formula stability and improving conditioning effects. Although acrylate copolymers have good temperature resistance, in order to meet the stability of shampoo in different environments, the temperature resistance of acrylate copolymers still needs to be improved.

[0022] The applicant first introduced β-cyclodextrin by specific technical means to obtain β-cyclodextrin-modified methacrylate (product 3), and then used it together with trifluoropentyl methacrylate, octadecyl methacrylate, and 2-ethylbutyl acrylate as polymerization monomers, and hydroxymethyl acrylamide as a post-crosslinking agent to synthesize a modified acrylate copolymer under the action of an initiator. On the one hand, the octadecyl methacrylate in the polymerization monomer contains a long alkyl chain and has a certain crystallization ability, which can provide structural stability while also having a low friction coefficient, thereby improving the smoothness of the shampoo to a certain extent. Furthermore, the applicant selected a specific type of The fluorine-containing acrylate and the fluorine content are controlled so that the introduced fluorine-containing groups can effectively improve the heat resistance of the acrylate copolymer, and can make the shampoo stable in a high temperature environment, and the fluorine element can also improve the antibacterial property of the shampoo; on the other hand, the applicant also uses β-cyclodextrin-modified methacrylate (product 3) as a polymerization monomer. In addition to the advantages of low irritation, moisturizing and antibacterial, β-cyclodextrin has a unique internal hydrophobic and external hydrophilic structure that can effectively improve the problem of poor water solubility of the modified acrylate copolymer caused by the introduction of fluorine groups, thereby enabling the modified acrylate copolymer to play a better role in shampoo.

[0023] In some embodiments of the present invention, the complex amino acids are a combination of glycine, serine, glutamic acid, aspartic acid, leucine, alanine, lysine, arginine, tyrosine, phenylalanine, threonine, proline, valine, isoleucine and histidine.

[0024] In some embodiments of the present invention, the plant extracts include cactus extract and oat bran extract.

[0025] In some embodiments of the present invention, the plant extract further comprises an extract of Ophiopogon japonicus root, an extract of Paeonia lactiflora root and an extract of Astragalus membranaceus root.

[0026] In some embodiments of the present invention, the nonionic surfactant is at least two of laureth-7, laureth-4, and laureth-23.

[0027] In some embodiments of the present invention, the other trace ingredients include the following raw materials: hydrogenated castor oil, sodium methyl cocoyl taurate, PEG-55 stearate, disodium EDTA, lauric acid, sodium phenylpropionate, citric acid, sodium phenylpropionate, glyceryl laurate, glyceryl caprylate, ethylhexylglycerin, synthetic fluorphlogopite, Cl 77891, tin chloride, and butylene glycol.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) The present invention uses sodium lauryl polyether sulfate and ammonium lauryl sulfate as the main components of the shampoo, and combines them with urea, allantoin, complex amino acids and plant extracts to design and synthesize a modified acrylate copolymer. Through the synergistic effect of the components, the shampoo has a repairing and smoothing function and good stability.

[0030] (2) The present invention first synthesizes β-cyclodextrin-modified methacrylate, and then synthesizes a modified acrylate copolymer with trifluoropentyl methacrylate, octadecyl methacrylate, and 2-ethylbutyl acrylate as main raw materials. While improving the temperature resistance of the acrylic acid copolymer, it also maintains good water solubility, thereby making it more stabilizing when added to shampoo. DETAILED DESCRIPTION

[0031] The present invention will be described below in conjunction with specific embodiments. It should be noted that the following examples are illustrative of the present invention and are intended only to illustrate the present invention and are not intended to limit the present invention. Other combinations and various modifications within the scope of the present invention may be made without departing from the spirit or scope of the present invention.

[0032] In the following examples and comparative examples, except for the modified acrylate copolymer, the remaining compound monomers and related reagents used can be purchased from the market. Among them, sodium laureth sulfate was purchased from Wuhan Maikairui Chemical Co., Ltd.; laureth-7, laureth-4 and laureth-23 were purchased from Hai'an Petrochemical Plant in Jiangsu Province.

[0033] Preparation Example 1

[0034] The synthetic method of modified acrylate copolymer A comprises the following steps:

[0035] (1) 14 g of β-cyclodextrin and 3.6 g of p-toluenesulfonyl imidazole were added to 150 ml of deionized water and stirred for 5 h. 30 ml of a 30 wt% sodium hydroxide aqueous solution was added and stirred for 10 min. The mixture was filtered and the filtrate was neutralized with ammonium chloride to pH 7. The mixture was filtered and washed with ice water and acetone in sequence. The mixture was dried under vacuum at 60° C. for 12 h to obtain product 1 for later use.

[0036] (2) 10 g of the product 1 of step (1) and 15 g of molten piperazine were mixed, stirred at 80° C. for 24 h, 200 ml of deionized water was added, stirred for 20 min, precipitated with acetone (repeated 3 times), and vacuum dried at 60° C. for 12 h to obtain product 2 for later use;

[0037] (3) 3 ml of glycidyl methacrylate and 6 g of the product 2 from step (2) were added to 65 ml of DMF, purged with argon for 30 min, stirred at 60° C. for 24 h, precipitated with acetone, and dried in vacuo at 80° C. for 12 h to obtain the product 3 for later use;

[0038] (4) 15 g of hexadecyltrimethylammonium bromide and 5 g of fatty alcohol polyoxyethylene ether were added to 100 ml of deionized water and stirred for 1 h to obtain solution 1 for use. 5 g of octadecyl methacrylate and 4 g of trifluoropentyl methacrylate were added to the solution and stirred for 20 min to obtain solution 2 for use. 0.5 g of 2-ethylbutyl acrylate, 2 g of the product 3 of step (3) and 0.5 g of N-hydroxymethyl acrylamide were mixed and stirred for 20 min. The mixture was added to solution 2 and stirred at 50 ° C for 30 min. The mixture was then ultrasonicated at 0 ° C for 3 min. 0.03 g of initiator KPS was added and the mixture was reacted under a nitrogen atmosphere for 4 h to obtain a modified acrylate copolymer A.

[0039] Preparation Example 2

[0040] The specific implementation of the modified acrylate copolymer B is the same as that of the modified acrylate copolymer A, except that in step (3), the mass of the product 2 is replaced by 4 g.

[0041] Preparation Example 3

[0042] The specific implementation of the modified acrylate copolymer C is the same as that of the modified acrylate copolymer A, except that in step (4), the mass of octadecyl methacrylate is replaced by 4 g.

[0043] Preparation Example 4

[0044] The specific implementation of modified acrylate copolymer D is the same as that of modified acrylate copolymer A, except that in step (4), the mass of trifluoropentyl methacrylate is replaced by 3 g.

[0045] Preparation Example 5

[0046] The specific implementation of the modified acrylate copolymer E is the same as that of the modified acrylate copolymer A, except that in step (4), the mass of the product 3 is replaced by 1 g.

[0047] Example 1

[0048] A shampoo with a repairing and smoothing function, comprising the following raw materials, calculated by mass percentage: 7% sodium laureth sulfate, 5% ammonium lauryl sulfate, 2% urea, 2% cocamidopropyl betaine, 1% fragrance, 0.5% sodium chloride, 0.5% salicylic acid, 0.4% allantoin, 0.3% phenoxyethanol, 0.3% guar hydroxypropyltrimonium chloride, 0.3% grapefruit peel oil, 0.12% sodium hydroxide, 1.5% complex amino acid, 0.5% plant extract, and modified acrylate copolymer A. 0.1%, nonionic surfactant 0.18%, hydrogenated castor oil 0.06%, sodium methyl cocoyl taurate 0.06%, PEG-55 stearate 0.05%, disodium EDTA 0.05%, lauric acid 0.036%, sodium phenylpropionate 0.01%, citric acid 0.01%, sodium phenylpropionate 0.01%, glyceryl laurate 0.01%, glyceryl caprylate 0.01%, ethylhexylglycerin 0.01%, synthetic fluorphlogopite 0.0441%, Cl 778910.0245%, tin chloride 0.0014%, butylene glycol 0.005%, the balance is water.

[0049] The composite amino acid is a composition of glycine, serine, glutamic acid, aspartic acid, leucine, alanine, lysine, arginine, tyrosine, phenylalanine, threonine, proline, valine, isoleucine and histidine in equal mass ratios.

[0050] The plant extract is a composition of cactus extract, oat bran extract, ophiopogon root extract, peony root extract and astragalus root extract in equal weight ratios.

[0051] The nonionic surfactant is a mixture of laureth-7, laureth-4 and laureth-23 in a mass ratio of 1:1:1.

[0052] The preparation method of the shampoo with the function of repairing and smoothing hair in this embodiment comprises the following steps:

[0053] Add water to the cleaned and disinfected emulsifying pot, add sodium laureth sulfate and ammonium lauryl sulfate, stir evenly, heat to 80°C, add guar hydroxypropyltrimonium chloride and cocamidopropyl betaine, keep warm for 30 minutes, cool to 30°C, add urea, essence, sodium chloride, salicylic acid, allantoin, phenoxyethanol, guar hydroxypropyltrimonium chloride, grapefruit peel oil, sodium hydroxide, complex amino acids, plant extracts, modified acrylate copolymer A, non-ionic surfactant, hydrogenated castor oil, sodium methyl cocoyl taurate, PEG-55 stearate, disodium EDTA, lauric acid, sodium phenylpropionate, citric acid, sodium phenylpropionate, glyceryl laurate, glyceryl caprylate, ethylhexylglycerin, synthetic fluorphlogopite, Cl77891, tin chloride and butylene glycol, stir evenly, pass the inspection, fill and package to obtain a shampoo with repairing and smoothing function.

[0054] Example 2

[0055] A shampoo with a repairing and smoothing function, comprising the following raw materials, calculated by mass percentage: 5% sodium laureth sulfate, 3% ammonium lauryl sulfate, 1% urea, 1% cocamidopropyl betaine, 0.5% fragrance, 0.3% sodium chloride, 0.3% salicylic acid, 0.2% allantoin, 0.1% phenoxyethanol, 0.1% guar hydroxypropyltrimonium chloride, 0.1% grapefruit peel oil, 0.1% sodium hydroxide, 1.2% complex amino acid, 0.4% plant extract, and modified acrylate copolymer A. 0.05%, nonionic surfactant 0.12%, hydrogenated castor oil 0.05%, sodium methyl cocoyl taurate 0.05%, PEG-55 stearate 0.04%, disodium EDTA 0.04%, lauric acid 0.036%, sodium phenylpropionate 0.01%, citric acid 0.01%, sodium phenylpropionate 0.01%, glyceryl laurate 0.01%, glyceryl caprylate 0.01%, ethylhexylglycerin 0.01%, synthetic fluorphlogopite 0.0441%, Cl 778910.0245%, tin chloride 0.0014%, butylene glycol 0.004%, the balance is water.

[0056] The composite amino acid is the same as that in Example 1.

[0057] The plant extract is a composition of cactus extract and oat bran extract, with a mass ratio of 1:1.

[0058] The nonionic surfactant is a mixture of laureth-7 and laureth-23, with a mass ratio of 1:1.

[0059] The preparation method of the shampoo with the function of repairing and smoothing hair in this embodiment is the same as that in Example 1.

[0060] Example 3

[0061] A shampoo with a repairing and smoothing function, comprising the following raw materials, calculated by mass percentage: 9% sodium laureth sulfate, 7% ammonium lauryl sulfate, 3% urea, 3% cocamidopropyl betaine, 1.5% fragrance, 0.7% sodium chloride, 0.7% salicylic acid, 0.6% allantoin, 0.5% phenoxyethanol, 0.5% guar hydroxypropyltrimonium chloride, 0.5% grapefruit peel oil, 0.14% sodium hydroxide, 1.8% complex amino acids, 0.6% plant extract, and modified acrylate copolymer A. 0.15%, nonionic surfactant 0.24%, hydrogenated castor oil 0.07%, sodium methyl cocoyl taurate 0.07%, PEG-55 stearate 0.05%, disodium EDTA 0.05%, lauric acid 0.036%, sodium phenylpropionate 0.01%, citric acid 0.01%, sodium phenylpropionate 0.01%, glyceryl laurate 0.01%, glyceryl caprylate 0.01%, ethylhexylglycerin 0.01%, synthetic fluorphlogopite 0.0441%, Cl 778910.0245%, tin chloride 0.0014%, butylene glycol 0.006%, the balance is water.

[0062] Complex amino acids are a combination of glycine, serine, glutamic acid, aspartic acid, leucine, alanine, lysine, arginine, tyrosine, phenylalanine, threonine, proline, valine, isoleucine and histidine.

[0063] The plant extract is a composition of cactus extract, oat bran extract, ophiopogon root extract, peony root extract and astragalus root extract

[0064] The nonionic surfactant is a mixture of laureth-7 and laureth-4 in a mass ratio of 1:1.

[0065] The preparation method of the shampoo with the function of repairing and smoothing hair in this embodiment is the same as that in Example 1.

[0066] Example 4

[0067] A shampoo with a repairing and smoothing function, which comprises the following raw materials by mass percentage: 9% sodium laureth sulfate, 7% ammonium lauryl sulfate, 3% urea, 3% cocamidopropyl betaine, 1.5% essence, 0.7% sodium chloride, 0.7% salicylic acid, 0.6% allantoin, 0.5% phenoxyethanol, 0.5% guar hydroxypropyltrimonium chloride, 0.5% grapefruit peel oil, 0.14% sodium hydroxide, 1.8% complex amino acids, plant Extract 0.6%, nonionic surfactant 0.24%, hydrogenated castor oil 0.07%, sodium methyl cocoyl taurate 0.07%, PEG-55 stearate 0.05%, disodium EDTA 0.05%, lauric acid 0.036%, sodium phenylpropionate 0.01%, citric acid 0.01%, sodium phenylpropionate 0.01%, glyceryl laurate 0.01%, glyceryl caprylate 0.01%, ethylhexylglycerin 0.01%, synthetic fluorphlogopite 0.0441%, Cl 778910.0245%, tin chloride 0.0014%, butylene glycol 0.006%, the balance is water.

[0068] Complex amino acids are a combination of glycine, serine, glutamic acid, aspartic acid, leucine, alanine, lysine, arginine, tyrosine, phenylalanine, threonine, proline, valine, isoleucine and histidine.

[0069] The plant extract is a composition of cactus extract, oat bran extract, ophiopogon root extract, peony root extract and astragalus root extract

[0070] The nonionic surfactant is the same as that in Example 1.

[0071] The preparation method of the shampoo with the function of repairing and smoothing hair in this embodiment comprises the following steps:

[0072] Add water to the cleaned and disinfected emulsifying pot, add sodium laureth sulfate and ammonium lauryl sulfate, stir evenly, heat to 80°C, add guar hydroxypropyltrimonium chloride and cocamidopropyl betaine, keep warm for 30 minutes, cool to 30°C, add urea, essence, sodium chloride, salicylic acid, allantoin, phenoxyethanol, guar hydroxypropyltrimonium chloride, grapefruit peel oil, sodium hydroxide, complex amino acids, plant extracts, non-ionic surfactants, hydrogenated castor oil, sodium methyl cocoyl taurate, PEG-55 stearate, disodium EDTA, lauric acid, sodium phenylpropionate, citric acid, sodium phenylpropionate, glyceryl laurate, glyceryl caprylate, ethylhexylglycerin, synthetic fluorphlogopite, Cl77891, tin chloride and butylene glycol, stir evenly, pass the inspection, fill and package to obtain a shampoo with repairing and smoothing function.

[0073] Example 5

[0074] This embodiment provides a shampoo with a repairing and smoothing function and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that the modified acrylate copolymer B replaces the modified acrylate copolymer A in equal amounts.

[0075] Example 6

[0076] This embodiment provides a shampoo with a repairing and smoothing function and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that the modified acrylate copolymer C replaces the modified acrylate copolymer A in equal amounts.

[0077] Example 7

[0078] This embodiment provides a shampoo with a repairing and smoothing function and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that the modified acrylate copolymer A is replaced by the modified acrylate copolymer D in equal amounts.

[0079] Example 8

[0080] This embodiment provides a shampoo with a repairing and smoothing function and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that the modified acrylate copolymer E replaces the modified acrylate copolymer A in equal amounts.

[0081] Example 9

[0082] This embodiment provides a shampoo with a repairing and smoothing function and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that the modified acrylate copolymer A is replaced by an equal amount of acrylate copolymer.

[0083] Acrylate copolymer was purchased from Guangdong Fangxin Biotechnology Co., Ltd.

[0084] Comparative Example 1

[0085] This comparative example provides a shampoo with a repairing and smoothing function and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that no urea is added.

[0086] Comparative Example 2

[0087] This comparative example provides a shampoo with a repairing and smoothing function and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that allantoin is not added.

[0088] Performance Testing

[0089] The repairing, smoothing and stability of the shampoos of Examples 1-9 and Comparative Examples 1-2 were tested. The test results are shown in Table 1.

[0090] (1) Repair and smoothing function

[0091] The repairing effect and smoothing effect of the shampoo of the present invention on damaged hair are further illustrated by comparing the combing performance and breaking work of the hair bundles.

[0092] Ten tresses of damaged, hydrogen peroxide-bleached hair (same length, 20 cm, each weighing approximately 16 g; hydrogen peroxide concentration, 3 wt %, bleaching time, 30 min) were uniformly sprayed with 5 g of each of the shampoos from Examples 1-9 and Comparative Examples 1-2. The tresses were then rinsed with 40°C warm water for 10 seconds and placed on a dynamic hair combing machine to compare their wet combing performance. Following the wet combing performance test, the tresses were placed in a constant temperature chamber at 25°C and 35% humidity, air-dried, and then placed on a dynamic hair combing machine to compare their dry combing performance. The lower the frictional resistance during both wet and dry combing tests, the smoother the hair tresses, indicating that the shampoo exhibits superior smoothing properties.

[0093] The shampoos of Examples 1-9 and Comparative Examples 1-2 were sprayed on the hair for one week. Ten hair tresses were placed on an MTT175 hair tension tester and the hair breakage strength was measured. A higher breakage strength indicates greater hair strength and toughness, indicating that the shampoo has better hair repair properties. Deionized water served as the control group.

[0094] (2) Stability

[0095] The shampoos prepared in Examples 1-9 and Comparative Examples 1-2 were stored at 60° C. for 4 months each, and the properties of the samples under various conditions before and after storage were examined.

[0096] Table 1

[0097] Group Wet combing dry combing Breaking work (J) Stability (60℃) Example 1 0.57 0.50 0.0305 No delamination, no obvious discoloration Example 2 0.70 0.61 0.0250 No delamination, no obvious discoloration Example 3 0.62 0.51 0.0288 No delamination, no obvious discoloration Example 4 0.88 0.80 0.0230 Obvious discoloration Example 5 0.76 0.67 0.0242 Slight discoloration due to delamination Example 6 0.78 0.68 0.0240 Slight discoloration due to delamination Example 7 0.81 0.69 0.0237 Slight discoloration due to delamination Example 8 0.82 0.70 0.0241 Slight discoloration due to delamination Example 9 0.85 0.77 0.0235 Slight discoloration due to delamination Comparative Example 1 1.14 1.03 0.0178 No delamination, no obvious discoloration Comparative Example 2 1.09 0.98 0.0185 No delamination, no obvious discoloration control group 1.25 1.29 0.0095 /

[0098] As shown in Table 1, the shampoos in Examples 1-3 of the present invention exhibit excellent overall repair and smoothing properties and stability. Specifically, Example 4 omitted the modified acrylate copolymer, Examples 5-8 varied the ratios of key components added during the synthesis of the modified acrylate copolymer, and Example 9 used a commercially available acrylate copolymer in place of modified acrylate copolymer A. This significantly impacted the stability of the shampoo, with some, but not significant, impact on the repair and smoothing properties. Comparative Examples 1-2, which omitted urea and urea, respectively, resulted in poor results in the shampoo's repair and smoothing properties.

[0099] The above embodiments are only for illustrating the technical concept and features of the present invention. Its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. It cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A shampoo with a repairing and smoothing function, characterized in that: The shampoo comprises the following raw materials, calculated by mass percentage as 100%,: 5-9% sodium laureth sulfate, 3-7% ammonium lauryl sulfate, 1-3% urea, 1-3% cocoamidopropyl betaine, 0.5-1.5% essence, 0.3-0.7% sodium chloride, 0.3-0.7% salicylic acid, 0.2-0.6% allantoin, 0.1-0.5% phenoxyethanol, 0.1-0.5% guar hydroxypropyltrimonium chloride, 0.1-0.5% grapefruit peel oil, 0.1-0.5% sodium hydroxide, 1.2-1.8% complex amino acid, 0.4-0.6% plant extract, 0.12-0.24% nonionic surfactant, 0.3-0.4% other trace ingredients, and the balance is water.

2. The shampoo with a repairing and smoothing function according to claim 1, characterized in that: Calculated by mass percentage of 100%, the raw materials further include 0.05-0.15% of modified acrylic ester copolymer.

3. The shampoo with a repairing and smoothing function according to claim 2, characterized in that: The preparation method of the modified acrylate copolymer comprises the following steps: (1) Add β-cyclodextrin and p-toluenesulfonyl imidazole to deionized water, stir for 4-6 hours, add sodium hydroxide aqueous solution, stir for 5-15 minutes, filter, take the filtrate, neutralize, filter, wash, and dry to obtain product 1 for use; (2) mixing the product 1 of step (1) with molten piperazine, stirring at 75-85° C. for 23-25 ​​h, adding deionized water, stirring, precipitating with acetone, and drying to obtain product 2 for later use; (3) Glycidyl methacrylate and the product 2 of step (2) were added to DMF, inert gas was introduced, and the mixture was stirred at 55-65° C. for 23-25 ​​h, precipitated with acetone, and dried to obtain the product 3 for later use; (4) adding hexadecyltrimethylammonium bromide and fatty alcohol polyoxyethylene ether into deionized water and stirring to obtain solution 1 for use; adding octadecyl methacrylate and trifluoropentyl methacrylate into solution 1 and stirring to obtain solution 2 for use; then mixing 2-ethylbutyl acrylate, the product 3 of step (3) and N-hydroxymethyl acrylamide, stirring, adding the mixture into solution 2, stirring at 45-55° C. for 20-40 minutes, and then ultrasonicating at 0-5° C.; adding an initiator, and reacting under an inert atmosphere to obtain a modified acrylate copolymer; 4. The shampoo with a repairing and smoothing function according to claim 3, characterized in that: In the step (3), the ratio of glycidyl methacrylate to product 2 is 1 ml: (1.5-2.5) g.

5. The shampoo with a repairing and smoothing function according to claim 3, characterized in that: In the step (4), the mass ratio of 2-ethylbutyl acrylate, octadecyl methacrylate, trifluoropentyl methacrylate and product 3 is 1:(9-11):(7-9):(3-5).

6. The shampoo with a repairing and smoothing function according to claim 1, characterized in that: The complex amino acid is a composition of glycine, serine, glutamic acid, aspartic acid, leucine, alanine, lysine, arginine, tyrosine, phenylalanine, threonine, proline, valine, isoleucine and histidine.

7. The shampoo with a repairing and smoothing function according to claim 1, characterized in that: The plant extracts include cactus extract and oat bran extract.

8. The shampoo with the function of repairing and smoothing hair according to claim 7, characterized in that: The plant extracts also include ophiopogon root extract, peony root extract and astragalus root extract.

9. The shampoo with a repairing and smoothing function according to claim 1, characterized in that: The nonionic surfactant is at least two of laureth-7, laureth-4 and laureth-23.

10. The shampoo with the function of repairing and smoothing hair according to claim 1, characterized in that: The other trace ingredients include the following raw materials: hydrogenated castor oil, sodium methyl cocoyl taurate, PEG-55 stearate, disodium EDTA, lauric acid, sodium phenylpropionate, citric acid, sodium phenylpropionate, glyceryl laurate, glyceryl caprylate, ethylhexylglycerin, synthetic fluorphlogopite, Cl 77891, tin chloride, and butylene glycol.