RU2380427C1 - Hair coat bleaching composition - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: composition is meant for bleaching fur and can be used in fur production during oxidative bleaching of the fur pigment, as well as pre-coloured to obtain a "multi-colour" effect. The composition contains 30% hydrogen peroxide, potassium persulphate, target catalyst additives in form of a complex salt 3(NH₄)₂Mo₄ 4(MoO₂ H₂O) and carbopol - a polymer based on polyacrylic acid, and water. The composition has pH 7.5 - 8.0, and relative (kinetic) viscosity of 64-65.

EFFECT: simpler composition and increased bleaching effect with maximum retention of quality of hair coat and leather tissue.

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Description

The invention relates to light industry and can be used in fur production during oxidative bleaching of pigmented hair coat of fur, as well as pre-dyed to obtain the effect of "multicolor".

A known composition for bleaching the hairline of fur skins / pat. RF №2255111 С14С 1/00, 2004 g /. The composition contains sodium chloride, hydrogen peroxide, potassium persulfate, a stabilizer of the pH of the processing medium - a composition based on the salts of mineral and organic acids "Anticolor 1" or "Anticolor - 2" and a protective additive - a mixture of primary fatty alcohols - "Anticolor - 3", with ratio of components, g / l:

NaCl 30-40 Potassium persulfate 5-10 PH stabilizer 10.0-15.0 Protective additive 1.0-2.5 30% hydrogen peroxide 10-35 Water up to 1 l

A disadvantage of the known technical solution is the complexity of the used components of the composition "Anticolor - 1, 2, 3".

The technical result of the invention is to simplify the composition and increase the whitening effect while maximizing the quality of hair and skin tissue.

The problem is achieved in that the composition for whitening includes hydrogen peroxide 30%, potassium persulfate and target additives: catalyst

3 (NH ₄ ) ₂ Mo ₄ · 4 (MoO ₂ · H ₂ O) and carbopol is a polymerization product based on acrylic acid in the following ratio of components:

Hydrogen peroxide, ml / l 20-25 Potassium persulfate, g / l 5-10 targeted supplements catalyst 3 (NH ₄ ) ₂ · Mo ₄ 4 (MoO ₂ · H ₂ O), g / l 0.2-0.15 carbopol - a polymerization product based on polyacrylic acid with a molecular weight of 10 ⁴ -10 ⁷ , g / l 5-10 water up to 1 l

while the pH of the composition is 7.5-8.0, and the relative (kinetic) viscosity is 64-65.

An essential distinguishing feature of the proposed structure is the use of carbopol. Carbopol is the trade name for a polymer based on polyacrylic acid with a molecular weight of 10 ⁴ -10 ⁷ ; when dissolved in water, it forms viscous systems with easily controlled rheological properties. In the presented composition, carbopol exhibits multifunctional properties: it has a stabilizing effect on the decomposition of hydrogen peroxide, regulating its speed and linking the products of adverse reactions, a protective effect on the hair and skin tissue.

The use of molybdenum compounds as the target additive allows us to direct the decomposition of hydrogen peroxide according to the mechanism by which intermediate products of the peroxide type are formed - diperoxomolybdates, which have a strong whitening effect, but at the same time they destroy hair keratin much less.

A feature of the proposed composition is the simplicity of its preparation, carbopol is dissolved in water at a temperature of 25-30 ° C, a gel with an easily adjustable viscosity is formed, then the remaining reagents are introduced into the system.

Table 1 presents the options for the proposed composition and prototype

Table 1 Proposed Example 1 Example 2 Prototype structure Hydrogen peroxide twenty 25 10-35 30%, ml / l Potassium persulfate 5 10 5-10 3 (NH ₄ ) ₂ Mo ₄ · 4 (MoO ₂ · H ₂ O) 0.15 0.20 - Carbopol, g / l 10 5 - Water up to 1 L up to 1 l up to 1 l up to 1 l pH 7.5 8.0 - Kinetic viscosity 64-65 64-65 -

The pH of the proposed compositions is provided by a buffer system based on boric and hydrochloric acids. The kinetic relative viscosity of the systems is determined by the viscometric method.

Table 2 presents the indicators characterizing the quality of the semi-finished fur product after the bleaching process of the proposed composition

table 2 Indicators Example 1 Example 2 Prototype Hair Whiteness 64 69 + Degree of hair damage 0.5 0.45 0.2 Hair solubility in urea hydrosulfite,% 24 25 thirty The temperature of the "welding" of the skin tissue, ° C 71 70 55

The degree of whiteness of the hair was evaluated by comparing the reflectivity on a leukometer.

The degree of damage was determined by the colorimetric method by changing the optical density of the methylene blue dye solution before and after its interaction with the hair being studied. The lower the optical density of the spent dye solution, the more damaged the hair.

The degree of hair destruction was evaluated by its solubility in urea hydrosulfite. The ratio of the mass loss of the sample during dissolution to the mass of the original sample is a measure of its damage.

The above data indicate that the proposed technical solution meets all the criteria of the invention and ensures the achievement of the claimed technical result.

Claims (1)

Composition for bleaching fur hair, including hydrogen peroxide 30%, potassium persulfate and target additives, characterized in that as the target additives contains a catalyst - complex salt 3 (NH ₄ ) ₂ Mo ₄ · 4 (MoO ₂ · H ₂ O) and carbopol - a polymerization product based on polyacrylic acid with a molecular weight of 10 ⁴ -10 ⁷ in the following ratio of components:
hydrogen peroxide, ml / l 20-25 potassium persulfate, g / l 5.0-10.0 target additives: catalyst 3 (NH ₄ ) ₂ Mo ₄ · 4 (MoO ₂ · H ₂ O), g / l 0.2-0.15 carbopol 5-10 water up to 1 l
the pH of the composition is 7.5-8.0, and the kinetic viscosity is 64-65.