JP3088229B2 - Hair cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cosmetic composition which imparts good luster to hair by giving the hair a non-greasy property, an excellent set holding power, a natural supple hair with no discomfort, and a good shine.

[0002]

2. Description of the Related Art Conventionally, hair cosmetics have been used by solubilizing, emulsifying and dissolving oil components such as silicone oil, ester oil and hydrocarbon oil for the purpose of giving hair suppleness and luster. In particular, silicone oil has been widely used in recent years because it has a low surface tension, is excellent in conformity to hair, and has good luster.

[0003] However, the oil represented by silicone oil has a limitation that the oil has a limit, and when used in a large amount or when used for a long time by a consumer, there is a disadvantage that the hair becomes more squeaky and greasy.

[0004] In addition, cationic surfactants are often used for the purpose of imparting flexibility, but they do not impart desirable luster and have a drawback that if they are incorporated in a large amount, safety is not preferred.

[0005] There are various high molecular compounds in hair styling products for setting hair, and among them, amphoteric high molecular compounds are used as high molecular compounds.

[0006] The amphoteric polymer compound exhibits good set holding power, but has no luster and has a rough finish after setting. There is also the disadvantage of stickiness during drying and under high humidity.

Further, hair cosmetics comprising a combination of cationized silicone and an amphoteric polymer (JP-A-2-111711) and hair cosmetics comprising a combination of starch syrup and polyoxypropylene butyl ether (JP-A-4-283508)
Japanese Patent Application Laid-Open No. H10-27983 has been proposed, but the former reduces the set holding power, and the latter imparts suppleness to the hair, but is sticky and unsatisfactory.

[0008]

SUMMARY OF THE INVENTION In view of such circumstances, the inventor of the present invention has made the hair non-sticky, has excellent set holding power, and has a natural feeling of uncomfortable hair. As a result of intensive investigations with the aim of providing a hair cosmetic that gives a supple hair and gives good gloss, a hair cosmetic characterized by blending polyoxyalkylene-modified silicone, amphoteric polymer and starch syrup Found that all these were satisfied, and completed the present invention. That is, claim 1 of the present invention is a hair cosmetic comprising a mixture of polyoxyalkylene-modified silicone, amphoteric polymer and starch syrup. Further, claim 2 of the present invention is the method according to claim 1, wherein the weight ratio of the polyoxyalkylene-modified silicon (A) + amphoteric polymer (B) and starch syrup (C) [(A) + (B)] / ( C)] is 0.0075 or more
It is a hair cosmetic characterized by being 200.

The polyoxyalkylene-modified silicon used in the present invention is polyoxyethylene-modified silicon, polyoxypropylene-modified silicon, or polyoxyethylene-polyoxypropylene-modified silicon, and these polyoxyalkylene chains are pendant to the silicon chains. And dimethylsiloxane and polyoxyalkylene chains alternately polymerized in a linear manner, and further, pendant and linear mixed systems of these. Among the polyoxyalkylene-modified silicons, the polyoxyethylene-polyoxypropylene-modified silicon is slightly better than the polyoxyethylene-modified silicon alone in terms of glossiness and less reduction in set holding power. .

The amphoteric polymer compound used in the present invention includes an acrylic amphoteric resin. Specific examples include N-methacryloylethyl N, N-dimethylammonium.α
-N-methylcarboxybetaine / butyl methacrylate copolymer and octylacrylamidobutylaminoethyl methacrylate (meth) acrylic acid / methacrylic acid ester copolymer; the former is Yuka Former AM-75W (Mitsubishi Yuka Corporation) The latter is A
It can be purchased as mphomer (manufactured by National Starch).

The starch syrup used in the present invention is produced by hydrolyzing starch with a dilute acid (mineral acid or oxalic acid) or an enzyme (amylase).

The total amount (A) + (B) of the polyoxyalkylene-modified silicone of the present invention and the amphoteric polymer is preferably 1 to 20% by weight, more preferably 2 to 6% by weight, based on the total amount of the hair cosmetic. %. When the content is less than 2% by weight or more than 6% by weight, the present invention is satisfied, but is not always sufficient in terms of set holding power and finish.

The weight ratio [(A) + (B)] / (C) of the polyoxyalkylene-modified silicone (A) + amphoteric polymer (B) and starch syrup (C) of the present invention is 0.0075 to 200. It is preferably in the range, more preferably in the range of 0.02 to 50. When the ratio is less than 0.0075 or more than 200, the present invention is satisfied, but the set holding power and the finish are not always sufficient.

In the hair cosmetic composition of the present invention, in addition to the above-mentioned essential components, alcohols, oils, surfactants, coloring agents, thickeners, as long as the effects of the present invention are not impaired depending on the purpose. , Sequestering agents, ultraviolet absorbers, antioxidants, preservatives,
A cooling agent, a fragrance, a pH adjuster, a plant extract, a damaged hair repair agent, a crude drug, other additives, and the like may be appropriately compounded.

[0015]

The present invention will be described below with reference to examples and comparative examples. The present invention is not limited by these.

Set lotions were prepared in Examples 1 to 8 and Comparative Examples 1 to 4, and the set retention of hair cosmetics and the evaluation of practical tests were evaluated as follows. In addition, the compounding quantity of the composition shown in the following tables is each shown by weight%.

(1) Set holding power A hair cosmetic sample having a length of 15 cm and a weight of 1.0 g is uniformly coated with 0.5 g of a hair cosmetic sample and wound around a 2 cm diameter rod.
It was left in a high-temperature room at 45 ° C. for 6 hours to be completely dried.
After drying, remove the rod and the apparent length of the hair bundle (L)
Then, the hair bundle was hung in a thermo-hygrostat at a temperature of 25 ° C. and a humidity of 90%, taken out after 30 minutes, and the apparent length (L ₀ ) of the hair bundle was measured again.

The set holding force was determined by the following equation. Set holding force (%) = [(15−L ₀ ) ÷ (15−
L)] × 100 Therefore, the closer this value is to 100, the stronger the set holding force.

The evaluation criteria are as follows. ◎: Very good set holding power of 80% or more ○: Good Set holding power of 50% or more and less than 80% Δ: Slightly bad Set holding power of 30% or more and less than 50% ×: Poor set holding power of less than 30%

(2) Practical test A sample of hair cosmetics was used by 20 subjects,
Hairdressing was performed. Thereafter, the subject himself performed a sensory evaluation of non-stickiness, suppleness, and gloss.

The evaluation criteria are as follows. ◎: Very good ○: Good △: Somewhat bad ×: Bad

The polyoxyalkylene-modified silicon used in Examples and Comparative Examples was SILWET L-7002,
SILWET L-7604 (Nihon Unicar Co., Ltd.)
It was used.

The amphoteric polymer compound used was Yuka Former AM-75W (Mitsubishi Yuka Co., Ltd.). Table 1 shows the evaluation results.

[0024]

[Table 1]

As is clear from Table 1, the hair cosmetics of Examples 1 to 8 using the components of the present invention exhibited excellent performance.

On the other hand, Comparative Examples 1 to 4 lacking any of the essential components were inferior in terms of setting power, gloss, suppleness and non-stickiness, and could not achieve the object of the present invention.

Example 9 Foamed Cosmetic LPG 10 based on 90% of a stock solution obtained by preparing the following composition
% To prepare a foamy cosmetic.

(Composition of stock solution) (1) Polyoxyalkylene-modified silicon (20EO / 15PO) 0.3 (%) (SILWETL-7002 Nippon Unicar Co., Ltd.) (2) Amphoteric polymer 2.0 (Yuka Former AM-75W Mitsubishi Yuka Co., Ltd.) (3) Mizuame 1.0 (4) Polyoxyethylene hydrogenated castor oil (60E.O.) 1.0 (5) Dipropylene glycol 2.0 (6) Ethanol 20 0.0 (7) Preservatives Appropriate amount (8) Purified water Remaining When this foamy cosmetic is used, the hair is non-greasy, has excellent set holding power, and gives a natural and supple hair that is smooth and does not feel uncomfortable. , Good gloss was obtained.

Example 10 Hair spray A hair spray was prepared by adding 40% of dimethyl ether to 60% of a stock solution obtained by preparing the following composition.

(Composition of stock solution) (1) Polyoxyalkylene-modified silicon (20EO / 15PO) 1.0 (%) (SILWETL-7002 Nippon Unicar Co., Ltd.) (2) Amphoteric polymer 5.0 (Yuka Former AM-75W Mitsubishi Yuka Co., Ltd.) (3) Ginger syrup 0.3 (4) Glycerin 1.0 (5) Ethanol 40.0 (6) Appropriate amount of ultraviolet absorber (7) Purified water balance

When this hair spray was used, the hair was non-greasy, had excellent set holding power, was finished with a natural and supple hair with no discomfort, and had good luster.

[0032]

Industrial Applicability As described above, the present invention provides a hair cosmetic which gives a non-greasy, excellent set holding power to hair, gives natural and supple hair with a feeling of unpleasantness, and gives a good luster to the hair. Can be provided.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61K ^7/ 00-7/50

Claims (2)

(57) [Claims] 1. A hair cosmetic comprising a polyoxyalkylene-modified silicone, an amphoteric polymer and starch syrup. 2. The weight ratio [(A) + (B)] / (C) of polyoxyalkylene-modified silicone (A) + amphoteric polymer (B) and starch syrup (C) is 0.0075 to 200.
The hair cosmetic according to claim 1, wherein