The method of obtaining polymer products for leather processing

C09B45/02 - Preparation from dyes containing in o-position a hydroxy group and in o; 1-position hydroxy, alkoxy, carboxyl, amino, or keto groups

 

(57) Abstract:

The invention relates to the production of dye sintanol used for processing leather and fur. Describes a method of obtaining a polymer azo dyes for leather by azo coupling of a derivative of guanidine with disasstable selected from the group comprising sulfanilic acid-naphtylamine, n-nitroaniline, 2,4-dinitroaniline or nationowl acid, obtained uzasadnienie subjected to complexation with the participation of transition metal cations selected from the group Ni2+, Co2+, Cu2+, CR3+or Al3+. The method can improve the color stability, as well as leather and leather fur to the physical and mechanical influences.

The invention relates to the production of dye sintanol 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, improve product quality.

Known methods for producing metallocomplex dyes /improving the quality and expanding the range of skin through the use of synthetic dyes//Overview "Leather industrial is Seva prom th, 1983/ in the synthesis of coloring products.

A known method of producing azo dyes on the basis of aromatic derivatives of guanidine /patent RF 2131443, CL IPC With 14 3/22, 1998/, the lack of which can be considered a low resistance painted these products materials to friction.

The purpose of the present invention is to improve the resilience of the skin and the leather of the fur to the physical and mechanical influences, expanding the range of coloring materials.

This goal is achieved by the introduction of a system of transition metal salts in obtaining a dye Santana.

The proposed method consists in the following.

In the first stage, polyhexamethylene guanidine /pgmg/ processed with formaldehyde in the ratio of 1: 4 0.01 N. the solution of borax in a boiling water bath for 6 hours and Then the temperature is reduced to 60oWith, and in the reaction mixture are compounds with activated aromatic nuclei /phenols, amines, and the heating is continued for another 2 h thus Obtained svoeobraznye substances used in the future as a polymer azo-components.

The next stage reaction result. As disocactus the ASS="ptx2">

At the final stage is the complexation reactions involving cations of transition metals Ni2+, Co2+, Cu2+, Cr3+or Al3+where the ligands are athropy and ortho-hydroxy-, o-amino group of a polymeric azo compounds.

Example 1.

In the reaction flask make 70,6 m H. PGMT, 145 ml of 38% formalin solution, 125 ml of 0.01 n solution of borax. Synthesis of lead for 6 h with constant stirring until no odor of formaldehyde. The temperature was lowered to 60aboutTo download 72 m H.-naphtylamine and continue the reaction Yeshe 2 hours the resulting mass is washed from the unreacted-naphtylamine with ethyl acetate and then used for the result.

For the preparation of diazonium salts dissolve 17 m H. sulfanilic acid in 42 ml of 2 n sodium hydroxide solution. Add a solution of 7 m H. of sodium nitrite in 75 ml of water. The resulting mixture was cooled with ice. Separately prepare a solution 41,4 m H.-naphthylamine derived pgmg in 170 ml of 1 N. hydrochloric acid. Under stirring to him poured the solution of diazonium salts. The newly obtained mixture is added 2 n sodium hydroxide solution until an alkaline reaction. The resulting uzasadnienie orange in color.

Soviat and dried.

Metalcomplexes connection is colored red-orange color.

Example 2.

In the reaction flask make 70,5 m H. pgmg, 145 ml of 38% formalin solution, 125 ml of 0.01 n solution of borax and heated for 6 h with constant stirring on a boiling water bath. Reduce the temperature to 60oTo make 72 m H.-naphthol and within 2 hours to continue the reaction. After the product is cooled, washed with ethyl acetate and used as azo-components.

For the preparation of diazonium salts dissolve 25 m H. sulfanilic acid in 65 ml of 2 n sodium hydroxide solution. Add a solution of 10 m H. of sodium nitrite in 120 ml of water, the mixture is cooled with ice to 10aboutWith and with stirring, poured another 130 ml of 2 n hydrochloric acid. 41,6 m H.-naftalina derived pgmg dissolved in 225 ml of 2 n sodium hydroxide and mixed with cooked salt of the page. Then make a 22 m H. CoCl26H2O, heated to 60oC and stirred for 30 minutes Bright red azo compounds in the process of complex formation is changed to brown. After cooling, the precipitate is filtered off and dried.

Skin samples dyed in the described conditions, have a deep brown color.

A method of obtaining a polymer azo dyes for leather by azo coupling of a derivative of guanidine with disasstable selected from the group comprising sulfanilic acid-naphtylamine, n-nitroaniline, 2,4-dinitroaniline or nationowl acid, characterized in that the obtained uzasadnienie subjected to complexation with the participation of transition metal cations selected from the group Ni2+With2+, C2+, CR3+or Al3+.

 

Same patents:
The invention relates to an improved method of dyeing of fur skins oxidationin dyes, in which the fur skins are first treated with a metal stain containing acid and degreasing agent, and then paint

The invention relates to light industry, and in particular to methods of dyeing of fur skins

The invention relates to light industry, in particular the fur sub-sectors, and can be used in Cyrano-dyeing production to prepare for dyeing acid dyes

The invention relates to light industry, in particular the fur sub-sectors, and can be used in commercially-dye production in the tanning of fur skins

The invention relates to the leather industry and can be used in making leather for various purposes

The invention relates to the leather industry and can be used in making leather for various purposes

The invention relates to leather production, in particular for dyeing and greasing processes, and can be used in the formulation of the skins of various assortment and destination
The invention relates to light industry, namely, leather and fur production, and can be used for tanning leather and fur semi-finished product
The invention relates to the technology for synthetic tanning agent (sintanol) used in leather production
The invention relates to the technology for synthetic tanning agent (sintanol) used in leather production

The invention relates to light industry, namely, fur production, and can be used for tanning of fur and fur skins
The invention relates to the production of the tanning agent used in the production of leather and fur
The invention relates to the production of the tanning agent used in the production of leather and fur

The invention relates to organic chemistry and is a new polymer-based 5,5'-methylenebisacrylamide aldehyde and diamine fluorophore General formula:

[=F=CH-C6H40-CH2-C6H40-CH=n,

where n= 6-9,

< / BR>
The claimed connection most effectively can be used as fluorescent additives in liquid and solid scintillators as active element in laser technology

The invention relates to the field of organic dyes, in particular to a method of obtaining polimerisation dyes containing in the molecule fragments of the polymer, i.e

The invention relates to the production of organic dyes, in particular to methods for oligomeric dyes primarystring

The invention relates to the field of dyes, in particular to new dyes containing performanceavoidance group and intended for dyeing politoblichitel

The invention relates to the field of technical chemistry section of polymeric materials, and more specifically to a method for producing cobalt containing crosslinked polyhexamethylene
Up!