JPH01211516A - Foamy hair cosmetic - Google Patents

Abstract

PURPOSE:To obtain a foamy hair cosmetic, containing a polydimethylsiloxane- polyoxyalkylene polymer, phenylmethylpolysiloxane and propellant, and capable of exhibiting excellent foaming properties even under a low-temperature environ ment in the winter season without sticking finish. CONSTITUTION:The aimed substance obtained by blending 0.1-3.0wt.% polydimethylsiloxane-polyoxyalkylene polymer expressed by formula I (m is 1-10; n is 1-10; P is 1-3; R is 6-30; X is H or acetoxyl) with 0.05-0.5wt.% phenylmethylpolysiloxane expressed by formula II (Y is 1-140) or formula III (a and b are 1<=a+b<=140) and 2-20wt.% propellant. A hair setting resin, plasticizer, oil, alcohols, surfactant, etc., can be suitably added thereto.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a foamy hair cosmetic, and more specifically, the present invention relates to a foamy hair cosmetic, which has a non-sticky finish and is easy to dry, and which foams even when used in low-temperature environments such as winter. This invention relates to an aerosol-type foamy hair cosmetic with good properties.

[Conventional technology]

In recent years, hair cosmetics have been used for the purpose of improving dripping during application and ease of use, as well as increasing fashionability.
Aerosol foam hair cosmetics are becoming popular.

[Problem to be solved by the invention]

However, the foaming performance of foamy hair cosmetics is affected by the outside temperature, so the foaming performance is poor when the temperature is low, such as in winter, and the hair cosmetics taken out of the aerosol container contain liquid, which causes I had problems with it running off my hands and brushes. This is because the vaporization ability of the propellant decreases, and it is known that this tendency is particularly remarkable when a polydimethylsiloxane-polyoxyalkylene polymer is used as the foaming aid.

This decrease in foaming properties can be improved by adding large amounts of other foaming aids such as surfactants and oils, but doing so will result in an oily finish. Another problem has arisen in that a smooth finish cannot be obtained.

[Means to solve the problem]

The present invention has been made in view of the current situation, and it is an object of the present invention to provide an aerosol-type foamy hair cosmetic that has a smooth finish without being sticky and can maintain excellent foaming performance even in low-temperature environments such as winter. The present invention solves this problem by blending desired amounts of a specific polydimethylsiloxane-polyoxyalkylene polymer and a specific phenylmethylpolysiloxane, and blending a propellant therewith in a specific ratio. This was achieved by doing so.

The gist is as follows: (a) Formula [where m is 1 to 1O; n is 1 to 10. P is 1-3;
R is 6-30; X means a hydrogen atom or an acetoxyl group. ] Polydimethylsiloxane-polyoxyalkylene polymer o, 1 to 3.0% by weight (b) formula [wherein Y is an integer of 1 to 140] or [wherein a and b are integers] , satisfies the relational expression l≦a+b≦140, ] 0.05 to 0 phenylmethylpolysiloxane represented by
．． 5% by weight and (c) 2 to 20% by weight of propellant.

[Details of the invention]

Hereinafter, the foamy hair cosmetic according to the present invention will be explained in more detail.

The polydimethylsiloxane-polyoxyalkylene polymer used in the present invention has the following formula: m is 1 to 10; n is 1 to 10; P is 1 to 3; R is 6 to 30; X is a hydrogen atom or an acetoxyl group. means. ] is blended within the range of 0.1 to 3.0% by weight; however, if the blending ratio is less than 0.1% by weight, the foaming properties will be insufficient and the foam volume will be poor; % or more, the oil component increases and the finish becomes sticky, and more preferably it is set at 0.3 to 1.2% by weight.

Further, the phenylmethylpolysiloxane used in the present invention has the following formula: c, where Y is an integer of 1 to 140] [In the formula, a and b are integers, and satisfy the relational expression 1≦a+b≦140'. ] and is blended within the range of 0.05 to 0.5% by weight; however, if the blending ratio is less than 0.05% by weight, foaming properties at low temperatures will not be improved; If it is more than 0.5% by weight, it will become sticky and will not finish if you wipe it off.
More preferably, it is desired to set it within the range of 0.1 to 0.2% by weight.

Further, the propellant used in the present invention is not particularly limited, and any propellant that is generally used in Niazol products, such as liquefied petroleum gas, chlorofluorocarbon gas, and dimethyl ether, can be used. It is also possible to use more than one species in combination. The blending ratio of propellant is 2 to 20.
The reason why it is set within the range of 2% by weight is that if it is less than 2% by weight, the vaporization ability will decrease, so when taken out from the aerosol container, the volume of foam will be extremely small, and it will not become foamy. This is because it is poured out as a liquid, and on the other hand,
This is because if it is 20% by weight or more, the texture of the foam will be rough and it is not desirable in terms of commercial value.

The foamy hair cosmetic may contain hair setting resins, plasticizers, oils, alcohols, surfactants, colorants, and thickeners to the extent that they do not impair the low-temperature foaming properties and finish that are the objectives of the present invention. , a bubble stabilizer, a metal sequestering agent, an ultraviolet absorber, a preservative, a fragrance, a pH adjuster, a plant extract, a damaged hair repair agent, and other additives may be added as appropriate.

Next, an experiment conducted to derive the blending ratio of each component in the present invention and its results will be explained.

In each experiment, the blending ratio of each component was changed and the foamability at low temperatures, smooth finish, and foam quality were evaluated. When each evaluation was good, O1 was normal, and Δ , When it is bad, an x is added. Furthermore, polyether-modified polysiloxane in the table is an abbreviation for phoridimethylsiloxane-polyoxyalkylene polymer.

The remainder of the total amount of each component in the table is water, and the unit of each number in the table is % by weight.

[Study of blending amount of polyether modified polysiloxane] In this experiment, 0.1% by weight of phenylmethylpolysiloxane, 5.0% by weight of propellant, and 0.5% by weight of set resin.
, ethyl alcohol was set at 5.0% by weight, and while keeping these blending ratios constant, the polyether modified polysiloxane was changed stepwise from 0.05% by weight to 5.0% by weight. The foamability at low temperatures and smooth finish were evaluated. In addition, the specific trade name of each component is written outside the table. As can be seen from the experimental results, when the blending ratio of polyether-modified polysiloxane is less than 0.3% by weight, there is no change in the finished state, but the foamability at low temperatures tends to be poor, and even more than 0.1% by weight. It has been found that if the amount is less than % by weight, the foamability at low temperatures deteriorates significantly, making it impossible to achieve the actual purpose. On the other hand, when the blending ratio of polyether-modified polysiloxane exceeds 1.2% by weight, there is no change in foamability at low temperatures;
The finish has a slightly sticky feel, and an additional 3.0% by weight
It was found that the smooth finish is completely lost when the dryness is exceeded.

From these results, it is necessary to set the blending ratio of polyether-modified polysiloxane within the range of 0.1 to 3.0% by weight, and it is particularly preferable to set it to 0.3 to 1.2% by weight. Recognize.

[Study of blending amount of phenylmethylpolysiloxane 3 In this experiment, 0.8% by weight of polyether-modified polysiloxane was used.
, 10.0% by weight of propellant, 0.3% by weight of setting resin.
, ethyl alcohol was set to 8.0 fii1%, and while keeping these blended amounts constant, the blended amount of phenylmethylpolysiloxane was increased from o, oi wt% to 1.0 wt%.
The foamability at low temperatures and smooth finish were evaluated when the temperature was changed stepwise.

If the amount of phenylmethylpolysiloxane is less than 0.1% by weight, there will be no adverse effect on the finish, but the foaming properties at low temperatures will be slightly worse, and furthermore, the amount of phenylmethylpolysiloxane will be less than 0.1% by weight.
If the amount is less than 0.05% by weight, foaming properties at low temperatures will deteriorate significantly. On the other hand, if it exceeds 0.2% by weight, it will not affect the foamability at low temperatures, but the smooth finish will tend to be slightly impaired, and if it exceeds 0.5% by weight, it will become oily and dry. It was found that the finish was completely damaged.

From these results, it is necessary to set the amount of phenylmethylpolysiloxane within the range of 0.05% to 0.5% by weight, and the amount of phenylmethylpolysiloxane should be set within the range of 0.1% to 0.2% by weight. It has been found that it is particularly advantageous to set

[Study of the amount of propellant added] In this experiment, 0.5% by weight of polyether-modified polysiloxane and 0.5% by weight of phenylmethylpolysiloxane were used. 115
The setting resin was set to 1.0% by weight and the ethyl alcohol was set to 12.0% by weight, and while keeping these blended amounts constant, the blended amount of the propellant was set to 1.0% by weight to 30.0% by weight. The foamability and foam properties at low temperatures were evaluated when the foaming properties were changed stepwise.

As a result, when the amount of propellant blended is less than 4.0% by weight, the foaming properties at low temperatures tend to decrease slightly, and at the same time, the foam properties tend to become slightly coarser. It was found that when the amount is too low, both the foamability and foam properties at low temperatures deteriorate significantly, resulting in a loss of commercial value.On the other hand, when the amount exceeds 15% by weight, although the foamability at low temperatures does not deteriorate, The texture of the foam becomes slightly rough,
When it exceeds 20% by weight, the foam becomes extremely rough and has no commercial value.

For these reasons, the propellant is 2.0% to 20% by weight.
It was found that it is particularly preferable to set the content within the range of 4.0% by weight to 15% by weight.

[Example] Table 4 shows the results of foamy hair cosmetics prepared taking into consideration the blending ratios of each component derived from the above experimental results.

This is an example. Polyether modified polysiloxane is 0.1
Within the range of 0.05% to 0.5% by weight, phenylmethylpolysiloxane within the range of 0.05% to 0.5% by weight,
The propellant is set within the range of 2% to 20% by weight. The names listed in the right column of each component are specific product names. Each of Examples A to ■ in accordance with the above-mentioned compounding ratios was satisfactory in terms of foamability at low temperatures, smooth finish, and foam properties. [Effects of the Invention] The foamy hair cosmetic according to the present invention is ) Formula [where m is 1 to 10; n is 1 to 10; P is 1 to 3; R is 6 to 30; X means a hydrogen atom or an acetoxyl group. ] 0.1 to 3.0% by weight of polydimethylsiloxane-polyoxyalkylene polymer [wherein Y is 1 to 140]
[In the formula, a+b is an integer and satisfies the relationship 1≦a+b≦140. ] Phenylmethylpolysiloxane shown by 0.05 to 0
．． 5% by weight and (c) propellant 2 to 20% by weight, it is possible to always pour foam with volume from the container even when the temperature is low such as in winter, and the foam A foamy hair cosmetic with fine texture and excellent commercial value and a smooth finish can be obtained.

Patent applicant: Sunstar Co., Ltd. Agent: Patent Attorney Tadayoshi Fujihara

Claims (1)

[Claims] (a) Formula ▲ Numerical formula, chemical formula, table, etc. ▼ [In the formula, m is 1 to 10; n is 1 to 10; P is 1 to 3; R is 6 to 30; X is hydrogen means an atom or an acetoxyl group. ] Polydimethylsiloxane-polyoxyalkylene polymer 0.1 to 3.0% by weight (b) formula [In the formula, Y is an integer from 1 to 140] Or, ▲ Numerical formulas, chemical formulas, tables, etc. are available▼ [ In the formula, a and b are integers and satisfy the relational expression 1≦a+b≦140. ] Phenylmethylpolysiloxane shown by 0.05 to 0
．． 5% by weight of a foamy hair cosmetic, and (c) 2 to 20% by weight of a propellant.