JPS6212714A - Hair dye - Google Patents

Abstract

PURPOSE:To provide a hair dye containing an oxidizing agent and an alkali metal salt of CMC having high substitution degree as a thickener, having excellent stability of viscosity with time, effective to prevent the drooping in hair- dying treatment, keeping the dyed hair for a long period without causing browning of the hair and the falling-off of the sizing agent, and having excellent effect to maintain the gloss of hair. CONSTITUTION:An alkali metal salt, preferably Na salt of a CMC having a substitution degree of >=2.0 is used as a thickener to obtain a stable hair dye containing an oxidizing agent. The amounts of the CMC alkali metal salt and the oxidizing agent in the dye are 0.05-5wt% and 1-10wt%, respectively. An excellent stability such as low viscosity lowering and resistance to browning, etc., can be achieved by the action of the CMC alkali metal salt to the oxidizing agent and alkaline agent, especially oxidizing agent in the hair dye.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a hair dye containing an oxidizing agent using an alkali metal salt of highly substituted carboxymethyl cellulose as a thickener.

(Prior art and its problems) Cellulose vinyl,
Acrylic gums are used, and recently natural gums such as xanthan gum and talacant gum have been developed in Japanese Patent Application Laid-Open No. 59-108.
710.

However, in the case of the former, for example, cellulone, there are problems with the viscosity stability of the hair dye paste due to the oxidizing agent and alkaline agent contained in the hair dye, and the gloss of the hair decreases after the hair dyeing process. In addition, vinyl and acrylic systems have problems in terms of hygiene and viscosity stability of hair dye pastes due to odor caused by unpolymerized monomers, residual components of catalysts, and significant viscosity increase due to the addition of alkaline agents. .

Furthermore, since natural gums are natural products, they depend on the place of production. Due to purchasing issues, there are problems with the lack of viscosity stability of the hair dye paste and the difficulty in maintaining the luster of the hair after the hair dyeing process; . [・
■ (Means for solving the problem 1'
″! 8J1. I”+ t″″″°”′″v′st-
,＜′=1 Huge.

f) J@ Jl -k /L/ cr -y $ f
)-II 'T:: to 6 K B 'Ill J
t h ) Ti, j alkali metal salt of boxymethyl cellulone! ! Dye::5 It is extremely stable against oxidizing agents and alkaline agents that are added to hair materials, and does not reduce the viscosity especially against oxidizing agents. fz<R
n%'L,,fzbl,,5゜yu8.1. . , ゎ7-yult10 was discovered and the present invention was completed '1
1: Yes.
1 (Structure of the Invention) The present invention is a hair dye containing an oxidizing agent in an alkali metal salt of carboxymethyl cellulone having a degree of substitution of 2.0 or more.

The degree of substitution is 2.0 to 3.0, preferably 2.2 to 3.0. Examples of the alkali metal salt include sodium, potassium, lithium, rubidium, and cesium, but sodium is preferably used from the viewpoint of cost.

The oxidizing agent is not particularly limited, but may include sodium hydrogen peroxide perborate, urea peroxide, sodium percarbonate, sodium peroxide tripolyphosphate, sodium peroxide pyrophosphate,
Examples include sodium orthophosphate peroxide and alkali metal salts of bromic acids, and hydrogen peroxide is usually used.

Oxidizing agent 1 to 1 in Baya hair dye using the hair dye of the present invention
0% by weight, alkali gold IEal of highly substituted carboxymethyl cellulose is blended to give o, os ~ 5% by weight, and is generally prepared as a highly concentrated aqueous solution and diluted with an appropriate amount of water for use in practical use. In addition to oxidative dyes, the hair dye of the present invention may contain surfactants, solvents, alkali agents, antioxidants, sequestering agents, and cationic polymer compounds within the range that does not impair the effects of the present invention. , wetting agents, fragrances, and other optional ingredients can be added.

Oxidation dyes penetrate into the inner layer of the hair and are oxidized to become insoluble pigments and dye the hair, and also serve as bleaching agents. Examples include toluene diamine, orthophenylene diamine, or its hydrochloride, sulfate, ortho-aminophenol, meta-aminophenol, meta-phenylene diamine, its tn salt, and sulfate.

Surfactants may include anionic, cationic, zwitterionic and nonionic surfactants. Examples of the solvent include alcohols such as ethyl alcohol, isopropyl alcohol, propylene glycol, and glycerin. Ammonia, amines, etc. are used as the alkaline agent. Examples of the present invention are shown below. Note that percentages are based on weight.

(!l!Example) Example I I (il paraphenylenediamine
2% (2) Resolumin
0.5(3) Oleic acid
19.5 (41 polyoxyethylene (10 mol) 5 oleyl alcohol ether (5) isopropyl alcohol 10 (6
) Ammonia water (28%) 10 (7) Water 53 (8) Cationized cellulone 0.5
(Manufactured by Polymer JR400tJcc) (9) Thickener (listed in Table 1) 0.
25'rx (10) Thickener (listed in Table 1)
0.25 (11) Hydrogen peroxide solution (3
0%) 20 (12) water
69 (13)! J acid (for pH adjustment)...
・pH 3.5 (1) (2) (31) to (7) of I above
Add and mix +41 (51 (6) and +81 (91), prepare a uniform dispersion, and filter. To this, (12)
As a result of mixing a homogeneous solution of (10), (11) and (13) and using a portion of this solution to dye hair, there was no sagging of the mixed hair dye paste during the hair dyeing process. , ■, and ■ were left at 45° C. for 6 months, but hardly any phenomena such as changes in viscosity over time or fading of color were observed. Furthermore, the gloss of dyed hair is extremely good and lasts for a long time (usually 2 to 3 days).
Table 1 Comparative Example 1 When the thickener shown in Table 2 was used as the thickener in Example 1, hair dyeing with a mixture of I and H was not observed. In addition, the viscosity of the mixture of I and (2) decreased significantly after one week when it was left standing (45°C), and it could not be put to practical use.

(Function and effect) The hair dye of the present invention has excellent oral viscosity stability, is extremely effective in preventing sagging during hair dyeing work, and is effective in preventing discoloration of hair after dyeing and removing glue over a long period of time. It does not come off and has excellent gloss maintenance. This is considered to be mainly due to the stability of the alkali metal salt of carpoquin methyl cellulone, which is used as a thickener and has a degree of substitution of 2□0 or higher, in aqueous systems against oxidizing agents and alkaline agents. .

Claims (1)

[Claims] A hair dye containing an alkali metal salt of carboxymethyl cellulose having a degree of substitution of 2.0 or more and an oxidizing agent.