The method of obtaining polymer products for skin treatment

 

(57) Abstract:

The invention relates to obtain products for processing leather and fur. The method comprises the azo coupling of aromatic derivatives of the polymer. As azo-components take amino compounds aromatic guanidine derivative, synthesized using aniline, naphtylamine, sulfanilic acid, nationway acid. As vasoactivity take sulfanilic acid, n-nitroaniline, -naphtylamine, nationowl acid, 2,6-dichloro-4-nitroaniline. The method allows to extend the range of coloring of polymers with complex technological properties, and sources of raw materials for their production.

The invention relates to the production of the tanning agent used in the production of leather and fur. It can be used with the aim of expanding the range of materials with complex technological properties, the intensification of the processes of production of leather and fur.

Known methods for producing polymeric materials with coloring ability on the basis of amino /Application of amino in leather production of various assortment. Review "Leather industry". - M.: cniitei is I.

The closest in technical essence of the present invention is a method of producing azo dyes on the basis of spent tanning solution formed during the production of leather bottom shoes and Russian leather, having a composition of phenolic compounds /Trakhtenberg S. I., Savchuk E. A. A. C. 1227683, USSR, C 14 C 3/32, C 09 B 29/00/. However, a range of coloring materials is limited due to the dark color of the waste liquid, not all companies have such drains.

The purpose of the invention is the expansion of the range of coloring of polymers with complex technological properties, the expansion of the sources of raw materials for their production.

This goal is achieved by the fact that as the basis to obtain dye compounds are amino compounds, aromatic derivatives, guanidine /metacid/.

Metacid is a colourless, water-soluble oligomer /m m 8 thousand.E./, having bacterial properties. The presence of the reactive guanidino group tells him the ability to various modifications with the formation of products with a wide range of technological properties.

The proposed method consists in the following.

N is th bath for 6-8 hours. Then the temperature is reduced to 60oC and the reaction mixture is made of aromatic amine /aniline, naphtylamine, sulfanilic or neftyanoye acid in a quantity equimolar to Metacity. The reaction continued for a further 2 hours. The obtained product is washed from the unreacted amines to negative reactions to them.

Synthesized derivatives of metacid - colorless /in the case of aniline and-naphtylamine/ or colored resin /in the case of sulphonic acids/ with different solubility in water.

In the second stage modificati of metacid entered into the azocoupling reaction with diazonium compounds derived from sulfanilic acid, nationway acid, n-nitro-aniline, naphtylamine, or 2,6-dichloro-4-nitroaniline.

EXAMPLE 1.

In the reaction flask make 70,5 m CH metacid, 145 ml of 38% aqueous formalin solution, 125 ml of 0.01 n solution of borax. Synthesis of conduct within 6 hours with constant stirring until no odor of formaldehyde. The temperature was lowered to 60oC and load 72 m H.-naphtylamine. The reaction continued for another 2 hours at the same temperature. The resulting resin is washed from the unreacted-naphtylamine with ethyl acetate and then used for the result.

the sid of sodium. Add a solution of 7 m H. of sodium nitrite in 85 ml of water. The resulting mixture was cooled with ice. Separately prepare a solution 41,4 m H. naphthylamine derived metacid in 170 ml of 1 N. hydrochloric acid. With stirring, a solution of diazonium salts poured to a solution of modificata of metacid. The newly obtained mixture is added 2 n sodium hydroxide solution until an alkaline reaction. The mixture was incubated for 2-3 hours, after which the precipitate is filtered off and dried.

The obtained coloring of modificat of metacid stains the skin in a brick-red color. The color is stable to dry and wet friction, exposure to organic solvents, light.

EXAMPLE 2.

In the reaction flask make 70,5 m CH metacid, 145 ml of 38% aqueous formalin solution, 125 ml of 0.01 n solution of borax and heated for 6 hours under stirring in a boiling water bath. Reduce the temperature to 60oC and add 86,5 m H. sulfanilic acid, after which the reaction continued for another 2 hours. The resulting resin is washed from unreacted sulfanilic acid and soda solution, then with water.

For azocoupling prepare a solution of 45.6 m H. sulfanilamides of metacid in 140 ml of 1 N. hydrochloric acid. Salt the page will receive by dissolving 19 is Aut a solution of 10 m H. sodium nitrite in 60 ml of water. Adding lead slowly so that the temperature did not exceed 5oC.

Mixed solutions of modificata and n-nitrophenyldiazonium. From sour colored solution produce sludge neutralization with soda solution and salting out salt.

The skin is coated with this modifier metacid has a rich Burgundy color.

The method of obtaining polymer products for treatment of skin, comprising the azo coupling of aromatic derivative polymer, characterized in that as azo-components used aromatic amino compounds derivatives of guanidine, synthesized using aniline, naphtylamine, sulfanilic acid, nationway acid, and diazotoluene are sulfanilic acid, n-nitroaniline, -naphtylamine, Martinova acid, 2,6-dichloro-4-nitroaniline.

 

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