CN107468560B - Shampoo composition containing tea extract - Google Patents

Abstract

The invention belongs to the technical field of daily chemicals, and relates to a shampoo composition. A shampoo composition containing tea extract comprises the following raw materials by weight percent: a tea extract; an anionic surfactant; an amphoteric surfactant; a cationic polysaccharide polymer derivative; an anti-dandruff agent; a non-volatile conditioning agent; a suspending agent; and the balance of pure water. The extraction technology disclosed by the invention can keep the cleaning capability and the emulsifying capability of the tea extract and can preserve the anti-inflammatory capability of the tea extract. The tea extract replaces a part of chemically synthesized surfactant, and through reasonable construction of a composition system framework and limitation of key parameters of raw materials, the surfactant dosage of the composition is low, the irritation is low, the anti-inflammatory effect is obvious, the malassezia bacteriostasis effect is obvious, and a good scalp care effect is further provided.

Description

Shampoo composition containing tea extract

Technical Field

The invention belongs to the technical field of daily chemicals, and relates to a shampoo composition.

Background

In the adverse symptoms of the scalp perceived by consumers, the scalp is itchy and dandruff occupy most of the cases, and a plurality of factors can stimulate the scalp to generate the feeling of itchy dandruff, wherein external factors are more important factors, the external adverse environment can stimulate the scalp to generate inflammation, and malassezia on the scalp can aggravate the dandruff of the hair. In the external adverse environment, whether the shampoo per se is irritant or not is an important factor, and the irritation of the shampoo per se is greatly related to the dosage and the matching of the surfactant of the composition per se. In the prior art, the scurf inhibition is performed on malassezia for the most part, the inflammation condition of the scalp is often ignored, some techniques can add some anti-inflammatory agents so as to keep the scalp healthy, but the irritation of the hair water of a main body is often ignored.

The anti-dandruff shampoo at the present stage has a very obvious anti-dandruff effect, particularly an effect of inhibiting malassezia by flocculating and carrying anti-dandruff particles so as to deposit the particles on hair or scalp, which is recognized and can be realized in the field. This effect is achieved, in large part, by cationic polysaccharide polymers. For example, a two-in-one shampoo utilizing a cationic guar gum derivative and an anionic surfactant to form flocculation is widely used in the market.

Similarly, chinese patent application No. 00809131.5 and chinese patent application No. 00808517.X disclose a flocculating phase formed by an anionic surfactant and a cationic guar derivative to carry silicone oil particles and zpt particles, the ability to carry effective particulates is achieved by preference for the cationic guar derivative parameters; chinese patent application No. 201480045888.9 also discloses that selenium disulfide, zinc pyrithione and silicone are carried by anionic surfactant, amphoteric surfactant and cationic guar gum derivative to achieve the anti-dandruff conditioning effect.

However, these disclosed techniques do not address the problem of scalp unhealthy conditions by starting with materials, and the prior art uses herbal extracts and plant extracts to address scalp unhealthy conditions, but the amount of chemically synthesized surfactants is still high, which is not conducive to reducing the irritation of the shampoo itself.

The invention analyzes the mechanism of generating itchy scurf and aims to provide an extraction technology of a tea extract and a shampoo composition containing the tea extract.

Disclosure of Invention

The invention aims to overcome the technical problems that the dosage of a chemically synthesized surfactant is large and the unhealthy symptom of the scalp cannot be relieved in many aspects in the prior art, and provides an extraction technology of a tea extract and a shampoo composition containing the tea extract. The tea extract replaces a part of chemically synthesized surfactant, and through reasonable construction of a composition system framework and limitation of key parameters of raw materials, the surfactant dosage of the composition is low, the irritation is low, the anti-inflammatory effect is obvious, the malassezia bacteriostasis effect is obvious, and a good scalp care effect is further provided.

A shampoo composition containing tea extract comprises the following raw materials by weight percent:

(A) 0.01-30% of tea extract;

(B) 0.01-5% of anionic surfactant;

(C) 0.5 to 30 percent of amphoteric surfactant;

(D) 0.05-3% of cationic polysaccharide polymer derivative, wherein the cationic polysaccharide polymer derivative is selected from any one or two of the following two compounds;

(i) the viscosity of the cationic cellulose derivative is 20000-40000 cps in 2% pure water solution; and the nitrogen content is 0.8-3.1%;

（

) The charge density of the cationic guar gum derivative is 0.5-1.0 meq/g; the molecular weight is 400000-1500000 g/mol;

(E) 0.5 to 3 percent of scurf removing agent;

(F) 0.05 to 5 percent of non-volatile conditioning agent;

(G) 0.01 to 10 percent of suspending agent; and the remainder of

(H) Pure water.

Further, the tea extract is prepared by the following steps:

a. crushing the residue cake after oil extraction of camellia seeds into powder by high-speed shearing, and placing 10-20% of tea powder into a reaction kettle;

b. soaking the mixture in 30-45% hot pure water at 85-90 ℃ for 30-60 minutes, filtering the mixture by using a 200-mesh filter bag to another reaction kettle, retaining the filtrate, and removing filter residues;

c. 0.1 to 5 percent of flocculating agent Al is added₂(SO₄)₃Removing impurities from the precipitate, cooling, and discharging the lower precipitate from the lower port of the reaction kettle to another reaction kettle;

d. adding the balance of 95% ethanol solution, soaking and stirring for 2-4 h; precipitating and filtering;

e. the filtrate flows to a decoloring device through an external circulation device, activated carbon is arranged in the decoloring device, and the filtrate is circularly decolored for 20 minutes;

f. distilling and concentrating the decolorized solution for 2-8 h, condensing the steam by a condensing device, and recovering an ethanol solution;

g. the crude tea extract after distillation and concentration may be dried in vacuum to form a solid product.

The yield of the finished tea extract product prepared by the process is 10-15%, and the purity is 92-96%. The tea extract can be foamed through experiments, and has a certain effect of relieving inflammation.

Further, the anionic surfactant is selected from one or more of alkyl polyoxyethylene ether sulfate, fatty acid monoglyceride sulfate, fatty alcohol ether sulfosuccinate, N-fatty acylamino acid salt, fatty acyl methyl taurate, monoalkyl sulfate, monoalkyl carboxylate and monoalkyl phosphate. Preferably at least one or two of alkyl polyoxyethylene ether sulfate, fatty acid monoglyceride sulfate, fatty alcohol ether sulfosuccinate, N-fatty acylamino acid salt and fatty acyl methyl taurate, and the anionic surfactant has a larger critical stacking parameter, wherein the stacking parameter is expressed by the following formula:

wherein,

the stacking parameter of the surfactant is obtained, V is the volume of a hydrocarbon chain of the surfactant, l is the critical length, and a is the area of an end group; it is desirable to include at least anionic surfactants having critical packing parameters above at least 1/4, optionally with the aid of one or both of monoalkyl sulfates, monoalkyl carboxylates, and monoalkyl phosphates, and it is within the scope of this patent to exclude such low packing parameters.

Experiments show that the surfactant with larger accumulation parameters is beneficial to reducing the irritation of the whole system, and simultaneously, the flocculation strength and the flocculation persistence generated by the anionic surfactant, the amphoteric surfactant and the cationic cellulose derivative can be enhanced, so that the technical effect to be realized in the patent has a gain effect. The addition of the auxiliary anionic surfactant can bring about improved foaming effect and thickening effect, and the addition is selectively positioned according to the final composition.

Further, the amphoteric surfactant is selected from one or more of fatty acyl amphoacetate, fatty acyl propyl betaine and fatty amide hydroxypropyl sulfobetaine. One or two of fatty acyl amphoacetate and fatty acyl propyl betaine are preferred, and fatty acyl propyl betaine is particularly preferred. The addition of amphoteric surfactant makes the flocculation strength and the flocculation durability further enhanced, and at the same time, if the anionic surfactant part has the surfactant with high optimized stacking parameter, the amphoteric surfactant is beneficial to increasing the easy adjustment of the viscosity of the composition, and the addition of amphoteric surfactant is known in the art to greatly improve the foam performance, the mild performance and the process realizable performance.

Further, the cationic polysaccharide polymer derivative comprises at least one of a cationic cellulose derivative and a cationic guar gum derivative.

Wherein R is¹Is a glucoside residue;

wherein R is²Selected from the group consisting of hydroxyalkylene, alkyleneoxyalkylene, polyoxyalkylene, and combinations thereof;

wherein R is³、R⁴And R⁵Independently selected from long alkyl chains, each containing up to 20 carbon atoms;

wherein, X^—One or more selected from halogen anion, sulfate ion and methyl sulfate ion;

preferably, the cationic cellulose derivative corresponding to the above formula is polyquaternium-10, having the desired formula:

and the cationic cellulose derivative has a nitrogen content of from about 0.8% to about 3.1% while having a viscosity of from about 20000 cps to about 40000cps in a 2% pure water solution. Preferably, the nitrogen content is from about 1.1% to about 3.0% while the viscosity of the pure aqueous solution is from about 25000 cps to about 38000 cps. More preferably, the nitrogen content is from about 1.5% to about 2.9%, while the 2% pure water solution has a viscosity of from about 28000 cps to about 32000 cps; most preferably from about 2.5% to about 2.9% nitrogen, while a 2% pure water solution thereof has a viscosity of from about 29000 cps to about 31000 cps; the cationic cellulose derivative is an important raw material for forming flocculation in the invention, and the applicant finds through experiments that in a formula adopting the cationic cellulose derivative or compounding the cationic cellulose derivative, and in a finally preferred composition framework of the invention, visible solid flocs capable of carrying effective substances exist in a pure water dilution range of 5-20 times, the solid flocs have the effect of wrapping effective particles, while in a dilution range of 20-60 times, most of flocs only become turbid, the dilution flocculation range is very wide, and actually, when a shampoo composition acts on hair, the dilution range is carried out from low dilution times to high dilution times, and the wider dilution range indicates that the shampoo composition has conditioning property for a long period of time.

The charge density of the cationic guar gum derivative is about 0.5-1.0 meq/g; and the molecular weight is about 400000-1500000 g/mol; preferably, the charge density is about 0.6-0.9 meq/g, and the molecular weight is about 450000-1300000 g/mol; most preferably, the charge density is about 0.7-0.8 meq/g, and the molecular weight is about 450000-1300000 g/mol 500000-1200000 g/mol; the applicant finds that in the system adopting the cationic guar gum derivative and the system compounded with the cationic guar gum derivative, and in the optimized system matched with the cationic guar gum derivative, the diluted flocculate shows good effect of wrapping effective particles, and meanwhile, the water content of the flocculated phase reaches an ideal state, so that the good deposition effect of the effective particles is realized.

Further, the antidandruff agent is selected from zinc pyrithione, hexamidine diisethionate, pyridone ethanolamine salt; wherein, the zinc pyrithione preferably has a particle size of 0.5-3.0 microns, is in a sheet or granular shape, is in a granular form in the shampoo composition, is considered as one of effective granules, can be wrapped and adsorbed by solid flocs formed by cationic polysaccharide polymers (cationic cellulose derivatives and cationic guar gum derivatives) and anionic surfactants, and is carried on the scalp, thereby achieving the purpose of inhibiting malassezia and further achieving the effect of removing dandruff.

Antidandruff agents, preferably zinc pyrithione and hexamidine diisethionate, are present in a 10: 1-75: 1 for use in combination.

Further, the non-volatile conditioning agent is one or a combination of dispersed silicone, amino-terminated polydimethylsiloxane, and preferably wherein the silicone and amino-terminated polydimethylsiloxane are present in the composition in a particle size of from about 0.05 microns to about 50 microns. This is also considered to be one of the effective particles, which has a conditioning effect on the hair, is adsorbed and carried on the hair by the solid flocs formed by the cationic polysaccharide polymer (cationic cellulose derivative and cationic guar gum derivative) and the anionic surfactant, and can achieve a two-in-one effect and improve the use feeling of the shampoo composition.

Further, the suspending agent is selected from acyl derivatives and long-chain amine oxides. Wherein the acyl derivative includes, but is not limited to, glycol esters of fatty acids containing 16 to 22 carbon atoms, long chain hydrocarbons, long chain esters of long chain fatty acids, long chain esters of long chain alkanolamides. Wherein the long chain amine oxide includes, but is not limited to, dimethylamine oxide of 16 to 22 carbon atoms. Preferably a fatty acid glycol diester having 18 carbon atoms. The applicant has experimentally verified that such a suspending agent has little influence on the degree of flocculation of the system and does not provide sufficient suspending power depending on the yield value.

Further, the above shampoo composition containing tea extract may further contain at least one of the following components in addition to the above essential components:

auxiliary suspending agent: 0.01 to 5 percent;

nonionic surfactant: 0.01 to 5 percent;

organic conditioning oil: 0.01 to 2 percent

Higher aliphatic alcohol: 0.01 to 5 percent

Preservative: 0.01-1%;

essence: 0.01 to 3 percent;

anti-inflammatory agents: 0.01-2%;

viscosity modifier: 0.01-4%;

light screening agent: 0.01 to 1.0 percent

Chelating agent: 0.005-0.2%;

ultraviolet absorber: 0.01-2%;

other plant extracts and their derivatives: 0.0001-5%.

In the shampoo composition containing the tea extract, the adding process of the tea extract is carried out according to the conventional surfactant adding method, and the preparation method of the shampoo composition is the conventional preparation and mixing technology, which is not described in detail herein.

The invention has the following beneficial effects:

1. the tea extract replaces part of chemically synthesized surfactant content, and can reduce surfactant irritation of the whole system, and reduce load for caring scalp. Experiments prove that the tea extract has the same foaming property, is a natural foaming agent, is mild and non-toxic, and can further care the scalp without relieving unhealthy symptoms of the scalp by firstly reducing the irritation of the shampoo composition.

2. The tea extract, the anti-dandruff agent and the cationic polysaccharide polymer derivative are used together, so that the scalp condition can be relieved from the scalp state and the microecological aspect of the scalp surface layer, and the unhealthy condition of the scalp can be effectively reduced. The stimulation of the surfactant to the scalp and the stimulation of the environment to the scalp are apparent as inflammation phenomena to a large extent, and the tea extract can effectively relieve the inflammation phenomena of the scalp. In addition, the malassezia is effectively inhibited in the matching of the anti-dandruff agent, particularly zinc pyrithione and the cationic polysaccharide polymer derivative, and the damage of the malassezia to the scalp is reduced.

3. The tea extract disclosed by the invention is low in extraction process difficulty, the complex synergistic effect among the shampoo compositions is obvious, the irritation of the shampoo compositions is low, the anti-inflammatory effect and the anti-dandruff effect are obvious through the synergistic effect among the raw materials, and the unhealthy condition of the scalp can be relieved from multiple aspects.

Detailed Description

The present invention will be described in detail with reference to examples.

Soap-based products containing the compositions of the present invention were prepared and table 1 below shows 3 preferred examples of the invention and 2 comparative examples. Wherein, the two-in-one shampoo which is good in sales quantity and takes scalp care as the concept is selected in the comparative example 3.

The extraction process of the tea extract selected in the examples and comparative examples is as follows:

a. the method comprises the following steps of (1) purchasing residue cakes obtained by extracting oil from camellia seeds on the market, cutting and crushing the residue cakes into powder at a high speed, and placing 15% of tea powder into a reaction kettle;

b. soaking the mixture in 40% hot pure water at 85-90 ℃ for 50 minutes, filtering the mixture by using a 200-mesh filter bag to the other reaction kettle, retaining the filtrate, and removing filter residues;

c. adding 3 percent of flocculating agent Al₂(SO₄)₃Removing impurities from the precipitate, cooling, and discharging the lower precipitate from the lower port of the reaction kettle to another reaction kettle;

d. adding the rest ethanol solution with the concentration of 95%, soaking and stirring for 4 h; precipitating and filtering;

e. the filtrate flows to a decoloring device through an external circulation device, activated carbon is arranged in the decoloring device, and the filtrate is circularly decolored for 20 minutes;

f. distilling and concentrating the decolorized solution for 6h, condensing the steam by a condensing device, and recovering an ethanol solution;

g. vacuum drying the crude tea extract after distillation and concentration to obtain a solid tea extract;

the solid tea extract yield of the above process was 12% and the purity was 93%.

From the above data, it is evident that the surface activity residual amount can be reduced by replacing a part of tea extract with conventional surfactants, and that zinc pyrithione alone or in combination with hexamidine diisethionate can achieve a more potent inhibitory efficiency against malassezia. The embodiment of the invention has more excellent performances in inhibiting malassezia and reducing the residual amount of surface activity.

Claims (8)

1. A shampoo composition containing a tea extract, characterized in that: comprises the following raw materials in percentage by weight:

(A) 0.01-30% of tea extract;

(B) 0.01-5% of anionic surfactant;

(C) 0.5 to 30 percent of amphoteric surfactant;

(D) 0.05-3% of cationic polysaccharide polymer derivative, wherein the cationic polysaccharide polymer derivative is cationic guar gum derivative, and the charge density of the cationic polysaccharide polymer derivative is 0.5-1.0 meq/g; the molecular weight is 400000-1500000 g/mol;

(E) 0.5 to 3 percent of scurf removing agent;

(F) 0.05 to 5 percent of non-volatile conditioning agent;

(G) 0.01 to 10 percent of suspending agent; and the remainder of

(H) Pure water;

the tea extract is prepared by the following method:

a. crushing the residue cake after oil extraction of camellia seeds into powder by high-speed shearing, and placing 10-20% of tea powder into a reaction kettle;

b. soaking the mixture in 30-45% hot pure water at 85-90 ℃ for 30-60 minutes, filtering the mixture by using a filter bag to the other reaction kettle, retaining the filtrate, and removing filter residues;

c. 0.1 to 5 percent of flocculating agent Al is added₂(SO₄)₃Removing impurities from the precipitate, cooling, and discharging the lower precipitate from the lower port of the reaction kettle to another reaction kettle;

d. adding the balance of 95% ethanol solution, soaking and stirring for 2-4 h; precipitating and filtering;

e. the filtrate flows to a decoloring device through an external circulation device, activated carbon is arranged in the decoloring device, and the filtrate is circularly decolored for 20 minutes;

f. distilling and concentrating the decolorized solution for 2-8 h, condensing the steam by a condensing device, and recovering an ethanol solution;

g. vacuum drying the crude tea extract after distillation and concentration to obtain solid finished product.

2. The tea extract-containing shampoo composition according to claim 1, characterized in that: the anionic surfactant is at least one selected from alkyl polyoxyethylene ether sulfate, fatty acid monoglyceride sulfate, fatty alcohol ether sulfosuccinate, N-fatty acylamino acid salt, fatty acyl methyl taurate, monoalkyl sulfate, monoalkyl carboxylate and monoalkyl phosphate.

3. The tea extract-containing shampoo composition according to claim 1, characterized in that: the amphoteric surfactant is at least one selected from fatty acyl amphoacetate, fatty acyl propyl betaine and fatty amide hydroxypropyl sulfobetaine.

4. The tea extract-containing shampoo composition according to claim 1, characterized in that: the anti-dandruff agent is at least one of zinc pyrithione, hexamidine diisethionate and pyridone ethanolamine salt.

5. The tea extract-containing shampoo composition according to claim 1, characterized in that: the anti-dandruff agent is zinc pyrithione and hexamidine diisethionate, the weight ratio of the anti-dandruff agent to the anti-dandruff agent is 10: 1-75: 1, compounding.

6. The tea extract-containing shampoo composition according to claim 1, characterized in that: the non-volatile conditioning agent is at least one of dispersed polysiloxane and amino-terminated polydimethylsiloxane.

7. The tea extract-containing shampoo composition according to claim 1, characterized in that: the suspending agent is selected from at least one of acyl derivatives and long-chain amine oxide.

8. The tea extract-containing shampoo composition according to claim 1, further comprising at least one of the following components:

auxiliary suspending agent: 0.01 to 5 percent;

nonionic surfactant: 0.01 to 5 percent;

organic conditioning oil: 0.01-2%;

higher aliphatic alcohol: 0.01 to 5 percent;

preservative: 0.01-1%;

essence: 0.01 to 3 percent;

anti-inflammatory agents: 0.01-2%;

viscosity modifier: 0.01-4%;

light screening agent: 0.01 to 1.0 percent

Chelating agent: 0.005-0.2%;

ultraviolet absorber: 0.01-2%;

other plant extracts and their derivatives: 0.0001-5%.