KR20040056256A - Hair mousse composition - Google Patents

Abstract

PURPOSE: Provided is a hair mousse composition which minimizes adverse effect on the hair by the exposure to ultraviolet rays, and has long-term hair styling effect. CONSTITUTION: A hair mousse composition is characterized by containing 0.1-8 wt.% of copolymer or its neutralized product consisting of 0.0001-20 wt.% of ultraviolet rays absorbing monomer unit of the formula(1), 50-95 wt.% of (metha)acrylate based monomer unit, 2-14 wt.% of monomer unit containing a carboxyl group, and 0.1-30 wt.% of monomer unit containing a polysiloxane group; and 0.05-3 wt.% of sodium acrylate/sodium acryloyldimethyl taurate.

Description

Hair mousse composition

The present invention relates to a hair mousse composition, and more particularly, to minimize the side effects of the ultraviolet light exposure of the hair, to give a set holding power to the hair for a long time without sticky, and also rich in foaming when sprayed into the foam hair mousse It relates to a composition.

As ultraviolet ray transmission amount due to ozone layer destruction increases, there is a growing interest in the effect of ultraviolet rays on the skin. Dermatologically, the ultraviolet rays contained in the sun are classified into 400-320 nm long wavelength ultraviolet rays (UV-A), 320-290 nm medium wavelength ultraviolet rays (UV-B), and 290 nm or shorter ultraviolet rays (UV-C).

Among these, short-wave ultraviolet (UV-C) is absorbed by the ozone layer in the atmosphere and hardly reaches the surface, but medium-wave ultraviolet (UV-B) and long-wave ultraviolet (UV-A) cause various skin disorders in the human body. It is known to cause. For example, long-wave ultraviolet (UV-A) not only causes skin darkening, but its energy reaches the dermis and affects the carbon fibers in blood vessel walls or connective tissue. In addition, when the skin is excessively exposed to medium-wave ultraviolet (UV-B) and long-wave ultraviolet (UV-A), red spots or blisters occur on the skin, promote aging of the skin, and cause wrinkles and freckles. Known.

In particular, ultraviolet rays adversely affect hair. In other words, ultraviolet rays oxidize and decompose melanin inside the hair to redden the hair and cause the strength of the hair to fall. As such, as ultraviolet light has been found to adversely affect human skin and hair, research is being actively conducted to give hair mousse a function to protect hair from ultraviolet light, which facilitates hair preparation and styling. have.

However, satisfactory results are not obtained when conventional sunscreens or absorbers are added to the hair mousse composition. That is, a sunscreen such as titanium oxide particles exhibits the effect only when they have an appropriate particle size, but it is not only difficult to control the particle size but also difficult to uniformly disperse the particles. In addition, organic UV absorbers such as 4-amino benzoic acid, cinnamic acid, benzophenone, and the like have low molecular weights, and have disadvantages such as volatility, transferability and extractability, and are not rich in foaming when sprayed onto foam.

Therefore, the technical problem to be achieved by the present invention is to solve the above problems to minimize the side effects of the ultraviolet light exposure of the hair, to give the set holding power to the hair for a long time without sticky, and also rich in foam formation when sprayed into the foam form It is to provide a mousse composition.

In order to achieve the above technical problem, the present invention is 0.0001 to 20% by weight of the ultraviolet absorbing monomer unit represented by the following formula (1), 50 to 95% by weight of the (meth) acrylate-based monomer unit, monomer units 2 to 14 containing a carboxyl group 0.1 to 8% by weight of a copolymer or neutralizing agent consisting of 0.1 to 30% by weight of a monomer unit containing% by weight and a polysiloxane group; And 0.05 to 3% by weight of sodium acrylate / sodium acryloyldimethyl taurate copolymer.

In Formula 1, R ₁ is a hydrogen atom or a methyl group, R ₂ is an alkyl group having 1 to 3 carbon atoms.

The ultraviolet absorbent monomer unit of the copolymer according to the present invention has a strong absorption capacity against the long-wavelength ultraviolet (UV-A) and the medium-wave ultraviolet (UV-B) problem is excellent in hair protection against ultraviolet rays. In addition, unlike conventional UV absorbers, since it is made of a polymer copolymerized with other monomers, there is no fear of deterioration in aging stability due to evaporation or extraction. As such an ultraviolet absorbing monomer unit, hydroxy acryloxy ethylphenyl benzotriazole, hydroxy methacryloxy ethylphenyl benzotriazole, hydroxy methacryloxy propylphenyl benzotriazole, etc. can be used individually or in copolymerization. The content of the UV absorbing monomer unit is a range in which the protective effect of UV invasion of the hair coated with the copolymer, the flexibility and the adhesion of the hair are good, and 0.0001 to 20% by weight based on the total weight of the copolymer is more preferable. Is 0.5 to 10% by weight.

Examples of the (meth) acrylate monomer unit of the copolymer according to the present invention include methyl (meth) acrylate, normal butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate, and the like. It may be used alone or in copolymerization. The (meth) acrylate monomer unit controls the film strength of the copolymer applied to the hair, and serves to maintain the initial physical properties. The content of the (meth) acrylate monomer unit is 50% based on the total weight of the copolymer, considering that the hair does not become entangled due to the softening of the film applied to the hair when using the hair mousse and is hard to be broken due to the solidification phenomenon. ~ 95% by weight is appropriate.

As a monomer unit containing a carboxyl group of the copolymer according to the present invention, acrylic acid, methacrylic acid, itaconic acid, or the like may be used alone or copolymerized. Such a monomer unit containing a carboxyl group may impart a hydrophilic property to the copolymer to provide hair. It acts to improve the water solubility in the manufacture of mousse, and makes it easy to remove hair mousse from the hair by facilitating trituration during hair washing. When the content of the monomer unit containing a carboxyl group maintains good hair cleanability and water solubility and maintains a high setting force even when absorbing moisture in the air, considering the range of minimizing stickiness causing hair entanglement, Suitable 2 to 14% by weight based on the total weight of the copolymer, preferably 5 to 10% by weight.

Monomer units containing a polysiloxane group of the copolymer according to the present invention include polydimethylsiloxane, α-butyldimethylsiloxy-ω- (δ-methacryloxypropyl), α-butyldimethylsiloxy-ω- (δ-di Methacrylicoxypropyl) and the like can be used alone or in copolymerization. Such a monomer unit containing a polysiloxane group gives lubricity and flexibility to the copolymer film applied to the hair and significantly reduces stickiness. The content of the monomer unit containing a polysiloxane group is appropriately 0.1 to 30% by weight based on the total weight of the copolymer, considering that it is expensive compared to other monomers and that beads are formed on the hair when used in excess.

The copolymer according to the present invention described above can be prepared by the following solution polymerization method.

First, the ultraviolet absorbing monomer which forms a copolymer, the (meth) acrylate type monomer, the monomer containing a carboxyl group, and the monomer containing a polysiloxane group are dissolved in a solvent. As a solvent, it is preferable to use C1-C2 alcohols, such as methanol and ethanol which are water-soluble organic solvents, individually or in mixture. The reaction initiator is added thereto and heated and stirred under a nitrogen atmosphere to polymerize. The added reaction initiator is hydrogen peroxide and t-butylperate, which are easily dissolved in the vinyl monomers and the solvent which form a copolymer and have excellent radical generating ability. It is preferable to use peroxides such as oxides or benzoyl peroxides, and azo compounds such as azobisisobutylonitrile and azobisdimethylvaleronitrile can also be used. It is preferable to adjust the addition amount of a reaction initiator so that the weight average molecular weight of the copolymer obtained may be about 5,000-100,000. In addition, the reaction temperature is based on the reflux temperature of the solvent used, the reaction time is preferably about 4 to 6 hours so that the conversion of the monomer constituting the copolymer is 99.8% or more.

The copolymer thus prepared is preferably neutralized in consideration of cleanliness, stickiness, and hair styling retention after application to the hair. Neutralization is carried out by dissolving a water-soluble organic basic neutralizing agent or inorganic basic neutralizing agent in an alcohol or the like to react with the copolymer. do. As the water-soluble organic basic neutralizing agent used at this time, for example, morpholine, monoethanolamine, diethanolamine, triethanolamine, monoisopropylamine, diisopropylamine, triisopropylamine, 2-amino-2-methyl- 1-propanol and the like, and alkali metal hydroxides such as lithium hydroxide, sodium hydroxide and calcium hydroxide may be used as the water-soluble inorganic basic neutralizing agent.

The copolymer or its neutralizing agent is added to the hair mousse composition together with the sodium acrylate / sodium acryloyldimethyl taurate copolymer used as a thickener, and bubbles are formed by the action of a propellant such as propane, normal butane and dimethyl ether. It is formed and applied to the hair in the form of foam. The content of the copolymer or its neutralizing agent is 0.1 to 8% by weight based on the total weight of the composition. If the content is less than 0.1% by weight, the setting force may be lowered. There is a risk of causing agglomeration and flaking of the hair. In addition, if the content of sodium acrylate / sodium acryloyldimethyl taurate copolymer is less than 0.05% by weight, the effect of reducing the stickiness and the foaming effect of the mousse is not obvious, and when the content of the content exceeds 3% by weight, the viscosity of the hair mousse composition is increased. There is a risk of gelation.

Conventional surfactants may be used in the hair mousse composition of the present invention, for example, lauryldimethylamine oxide, palm oil alkyldimethylamine oxide, lauryl acid diethanolamide, palm oil fatty acid diethanolamide, palm oil fatty acid monoethanolamide, 0.1-5 weight% of nonionic surfactants, such as a polyoxyethylene lauryl ether and polyoxyethylene nonyl phenyl ether, can be added.

In addition, solvents such as water and alcohol, and pH adjusters, flavorings, dyes, humectants, conditioning agents and the like can be added within the limits of not impairing the object of the present invention.

Hereinafter, the present invention will be described in detail with reference to Examples. However, embodiments according to the present invention can be modified in many different forms, the scope of the present invention should not be construed as limited to the embodiments described below. Embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

Synthesis Example 1

131 g of anhydrous ethanol was added to a 2 L reaction vessel equipped with a thermometer, a nitrogen input tube, a reflux condenser and a stirrer, and then heated to 80 ° C. under a nitrogen atmosphere. Subsequently, 58 g of 0.3 wt% solution of benzoyl peroxide dissolved in ethanol was added to the reaction vessel at once, followed by 205.9 g of t-butyl acrylate, 20.3 g of t-butyl methacrylate, 29 g of acrylic acid, polydimethylsiloxane and α-butyl Over 3 hours into the reaction vessel through a dropwise addition of a monomer solution mixed sufficiently at a ratio of 34.8 g of dimethylsiloxy-ω- (δ-methacryloxypropyl) and 0.29 g of hydroxymethacryloxy ethylphenyl benzotriazole. The polymerization was carried out under reflux with continuous dropping. When the addition of the monomer mixed solution was completed, 116 g of 0.6 wt% solution of benzoyl peroxide dissolved in ethanol was continuously added to the reaction vessel over about 1 hour, followed by stirring at the same temperature for 1 hour. Then, in order to increase the conversion of the polymer, 58 g of a benzoyl peroxide 2% by weight solution dissolved in ethanol was added, and stirred at the same temperature for about 2 hours or more to prepare a copolymer. Subsequently, the internal temperature of the reaction vessel was cooled to about 40 ° C. or lower, and then 217 g of a 8.7 wt% potassium hydroxide solution dissolved in ethanol was added thereto, followed by sufficient stirring to neutralize the copolymer.

The average molecular weight of the neutralization copolymer obtained by Water Gel Gel Chromatography (GPC) using polystyrene as a standard was found to be about 70,000.

Synthesis Example 2

The amount of added monomer was 188.2 g of t-butyl acrylate, 20.3 g of t-butyl methacrylate, 37.7 g of acrylic acid, 34.8 g of polydimethylsiloxane and α-butyldimethylsiloxy-ω- (δ-methacryloxypropyl), and The reaction was carried out in the same manner as in Example 1, except for changing to 0.29 g of hydroxy methacryloxy ethylphenyl benzotriazole and adding 2-amino-2-methyl-1-propanol instead of potassium hydroxide as a neutralizing agent.

The average molecular weight of the obtained neutralized copolymer was found to be about 82,300.

Synthesis Example 3

The amount of monomer added was 187 g of t-butyl acrylate, 20.3 g of t-butyl methacrylate, 37.7 g of acrylic acid, 34.8 g of polydimethylsiloxane and α-butyldimethylsiloxy-ω- (δ-methacryloxypropyl) and hydroxy. The reaction was carried out in the same manner as in Example 1, except that 2-hydroxy-2-methyl-1-propanol was added instead of potassium hydroxide as a neutralizing agent, and changed to 1.45 g of oxy methacryloxy ethylphenyl benzotriazole.

The average molecular weight of the obtained neutralized copolymer was found to be about 85,400.

Synthesis Example 4

The amount of monomer charged was 148 g of t-butyl acrylate, 43.5 g of t-butyl methacrylate, 37.7 g of acrylic acid, 58 g of polydimethylsiloxane and α-butyldimethylsiloxy-ω- (δ-methacryloxypropyl) and hydroxy. The same procedure as in Example 1 was carried out except that the methacryloxy ethylphenyl benzotriazole was changed to 2.9 g.

The average molecular weight of the obtained neutralized copolymer was found to be about 73,000.

Synthesis Example 5

The amount of monomer charged was 145 g of t-butyl acrylate, 43.5 g of t-butyl methacrylate, 37.7 g of acrylic acid, 58 g of polydimethylsiloxane and α-butyldimethylsiloxy-ω- (δ-methacryloxypropyl) and hydroxy. The same procedure as in Example 1 was carried out except for changing to 5.8 g of methacryloxy ethylphenyl benzotriazole.

The average molecular weight of the obtained neutralized copolymer was found to be about 72,720.

Comparative Example 1

131 g of anhydrous ethanol was added to a 2 L reaction vessel equipped with a thermometer, a nitrogen input tube, a reflux condenser and a stirrer, and then heated to 80 ° C. under a nitrogen atmosphere. Subsequently, 58 g of 0.3 wt% solution of benzoyl peroxide dissolved in ethanol was added to the reaction vessel at once, and then a monomer solution sufficiently mixed in a ratio of 241 g of t-butyl acrylate, 20.3 g of t-butyl methacrylate and 29 g of acrylic acid was added. The polymerization was carried out under reflux while continuously dropping into the reaction vessel over about 3 hours through dropping. When the addition of the monomer mixed solution was completed, 116 g of 0.6 wt% solution of benzoyl peroxide dissolved in ethanol was continuously added to the reaction vessel over about 1 hour, followed by stirring at the same temperature for 1 hour. Then, in order to increase the conversion of the polymer, 58 g of a benzoyl peroxide 2% by weight solution dissolved in ethanol was added, and stirred at the same temperature for about 2 hours or more to prepare a copolymer. Subsequently, the internal temperature of the reaction vessel was cooled to about 40 ° C. or lower, and then 217 g of a 8.7 wt% potassium hydroxide solution dissolved in ethanol was added thereto, followed by sufficient stirring to neutralize the copolymer.

The average molecular weight of the neutralized copolymer obtained by Water Gel Gel Chromatography (GPC) using polystyrene as a standard was found to be about 65,700.

Comparative Example 2

The amount and content of the added monomer were 148 g of t-butyl acrylate, 43.5 g of t-butyl methacrylate, 37.7 g of acrylic acid, and 58 g of polydimethylsiloxane and α-butyldimethylsiloxy-ω- (δ-methacryloxypropyl). A neutralization copolymer (average molecular weight about 72,720) was obtained and 2.9 g of 2- (2'-hydroxy-5'-methylphenyl) benzotriazole was blended in the same manner as in Comparative Example 1 except for the change. .

5 g of the polymers prepared according to Synthesis Examples 1 to 5 and Comparative Examples 1 to 2 and 95 g of ethanol were mixed and stirred, and the ultraviolet absorption intensity was evaluated using the US Hewlett Packard UV spectrometer as follows. The above-described compound was contained in 10 ml of quartz cells and the absorption intensity at 338 nm, which is the maximum wavelength, was measured. In addition, in order to evaluate the effect of sustaining light stabilization with time, the absorption intensity was measured immediately after the preparation of the formulation, after 24 hours, and after 72 hours.

Active ingredient of the combination Each monomer content in active ingredient A / B / C / D / E Neutralization degree (%) Average molecular weight (g / mol) UV absorption intensity Right after manufacturing After 24 hours After 72 hours Synthesis Example 1 71/7/10/12 / 0.1 80 70,000 0.476 0.464 0.458 Synthesis Example 2 64.9 / 7/13/15 / 0.1 70 82,300 0.478 0.461 0.442 Synthesis Example 3 64.5 / 7/13/15 / 0.5 80 85,400 1.673 1.665 1.651 Synthesis Example 4 51/15/13/20/1 80 73,000 2.344 2.341 2.338 Synthesis Example 5 50/15/13/20/2 80 72,720 2.588 2.581 2.575 Comparative Example 1 83/7/10/0/0 80 65,700 0.012 ND ND Comparative Example 2 51/15/13/20/1 80 68,000 2.366 2.094 1.875

In Table 1, A is t-butyl acrylate, B is t-butyl methacrylate, C is acrylic acid, D is polydimethylsiloxane and α-butyldimethylsiloxy-ω- (δ-methacryloxypropyl) , E represents hydroxy methacryloxy ethylphenyl benzotriazole in Synthesis Examples 1 to 5, and 2- (2'-hydroxy-5'-methylphenyl) benzotriazole in Control Example 2.

Referring to Table 1, a copolymer (Synthesis Examples 1 to 5) composed of a UV absorbing monomer unit, a (meth) acrylate monomer unit, a monomer unit containing a carboxyl group, and a monomer unit containing a polysiloxane group according to the present invention are contained. It can be seen that the blend is excellent in the ability to absorb ultraviolet light and the effect of sustaining light stabilization.

On the other hand, the formulation of Comparative Example 1, which does not include the UV absorbing monomer unit, is particularly poor in UV absorption strength, and unlike the copolymer of the Synthetic Example, the formulation of Comparative Example 2, which is simply blended with a low molecular weight sunscreen, has a UV light over time. Absorption intensity can be significantly reduced.

Examples 1 to 6 and Comparative Examples 1 to 3

To prepare a hair mousse composition according to the conventional aerosol hair mousse manufacturing method according to the components and contents shown in Table 2. About the hair mousse composition which concerns on an Example and a comparative example, evaluation about setting force, the state of a foam, stickiness was carried out as follows, and it is shown in Table 2.

<Setting force evaluation>

The hair mousse composition according to Examples and Comparative Examples was applied to 23 cm and 2 g of hair, and wound around a spiral to dry. Then, the hair without the spiral was left in a constant temperature and humidity room with a temperature of 25 ° C. and a relative humidity of 60%, and the hair length after 3 hours was measured, and the set retention force was calculated according to the following Curl retention formula. .

Curl Retention (%) = (L0-L2) / (L0-L1)

L0: Hair length before hair mousse treatment

L1: Length of hair before standing in constant temperature and humidity room

L2: Length after 3 hours left in constant temperature and humidity room

<Evaluation of Form's Status>

The hair mousse according to the Examples and Comparative Examples was shaken five times at 25 ° C., and then a foamer sprayed for 10 seconds was evaluated by the evaluator consisting of 100 men and women through visual observation. According to the 5-point scale method, the state of the form was scored, and then the average score was obtained.

(Evaluation standard)

Very good spray and uniform foam density with uniform foam form: 5

Good spraying and proper foam density in uniform foam form: 4

Proper spraying and foam density in uniform foam form: 3

Suitable for spraying with uniform foam form but high foam density: 2

Difficult to spray or very high foam density in uniform foam form: 1

<Sticky evaluation>

(1) mechanical evaluation

Stickiness was measured using a Miniature tensile tester-160 device from DIASTRON. The hair mousse composition according to Examples and Comparative Examples was placed on an acrylic plate in a constant temperature and humidity chamber, and then pressed with a film holder, and pressed with a force of 20 gmf.

(2) sensual evaluation

The hair mousse according to the Examples and Comparative Examples was shaken five times at 25 ° C., and then a suitable amount of the foam sprayed for 10 seconds was applied to the hair of an evaluator composed of 100 men and women by hand. Subsequently, the degree of stickiness of the foam-coated hand was scored according to the 5-point scale method, and then the average score was obtained.

(Evaluation standard)

Stickiness is very high: 1

Sticky high: 2

Stickiness is common: 3

Low stickiness: 4

Very low stickiness: 5

Ingredient Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative Example 1 Comparative Example 2 Comparative Example 3 Setting agent 1 3 4 5 3 3 3 - - - Setting agent 2 - - - - - - 3 3 4 Sodium Acrylate / Sodium Acryloyldimethyl Taurate Copolymer 0.2 0.2 0.2 0.3 0.4 0.5 3 3 4 Nonionic surfactant One One One One One One One One One incense 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 ethanol 10 10 10 10 10 10 10 10 10 LPG 5 5 5 5 5 5 5 5 5 Purified water to 100 to 100 to 100 to 100 to 100 to 100 to 100 to 100 to 100 Setting force (%) 84 90 95 84 83 83 70 70 74 Sticky (5-point scale) 3.7 3.6 3.2 3.8 3.8 4.0 2.3 2.5 2.5 Sticky (mgf) 20 21 25 20 20 19 50 35 38 State of the form (five-point scale) 3.6 3.5 3.3 3.6 3.7 3.7 2.3 2.9 2.5

In Table 2, the setting agent 1 is a copolymer according to Synthesis Example 5, the setting agent 2 is Polyquaternum-11, and the nonionic surfactant is Oleth-20. LPG is a common propellant used for hair mousse and is a mixture of propane, normal butane and isobutane.

Referring to Table 2, the hair mousse according to the embodiment containing the copolymer of the present invention as a setting agent is much less hair setting power and stickiness than the hair mousse of the comparative example containing a conventional setting agent, the state of the foam It can be seen that excellent.

As such, the hair mousse composition according to the present invention can not only minimize side effects due to UV exposure of the hair, but also impart a set holding power to the hair for a long time without stickiness. In addition, uniform and rich bubbles are formed upon spraying onto the foam, and the foam density is moderate, resulting in a very good feeling of use.

Claims (4)

Based on the total weight of the composition, 0.0001 to 20% by weight of the ultraviolet absorbing monomer unit represented by the following formula (1), 50 to 95% by weight of the (meth) acrylate monomer unit, 2 to 14% by weight of the monomer unit containing carboxyl group and 0.1 to 1 of the monomer unit containing polysiloxane group. 0.1 to 8% by weight of a copolymer or a neutralizer thereof composed of 30% by weight; And Hair mousse composition characterized by containing 0.05 to 3% by weight of sodium acrylate / sodium acryloyldimethyl taurate copolymer; <Formula 1> In Formula 1, R ₁ is a hydrogen atom or a methyl group, R ₂ is an alkyl group having 1 to 3 carbon atoms. The method of claim 1, wherein the (meth) acrylate monomer is selected from the group consisting of methyl (meth) acrylate, normal butyl (meth) acrylate, isobutyl (meth) acrylate and t-butyl (meth) acrylate. Hair mousse composition, characterized in that any one or more selected. According to claim 1, wherein the monomer containing a carboxyl group is a hair mousse composition, characterized in that any one or more selected from the group consisting of acrylic acid, methacrylic acid and itaconic acid. A monomer according to claim 1, wherein the monomer containing a polysiloxane group is polydimethylsiloxane, α-butyldimethylsiloxy-ω- (δ-methacryloxypropyl) and α-butyldimethylsiloxy-ω- (δ-dimethacryl Oxypropyl) hair mousse composition, characterized in that any one or more selected from the group consisting of.