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Preparation method of complex leather dye

A dye and leather technology, applied in the field of composite leather dye preparation, can solve the problems of poor leather affinity, poor solubility, and poor levelness, and achieve high leather affinity, good solubility, and good levelness. Effect

Active Publication Date: 2014-06-04
JINHUA SHUANGHONG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems such as poor solubility, poor level dyeing property, oil spots, dyed flowers, poor affinity to leather and poor dyeing rate that often occur when dyeing existing leathers, and proposes a kind of Complex leather dye with high solubility, ideal affinity, good levelness and excellent dye uptake

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this embodiment, acid black NT (C.I.Acid Black210) is used as the original dye.

[0034] Add 2000Kg of acid black NT (C.I.Acid Black210) to 10,000L of water, raise the temperature to 60°C, stir to completely dissolve, add 40Kg of polyethylene glycol 400, add 4Kg of hydroxypropyl methylcellulose, and add 50Kg of pentaethylenehexamine, Add 30Kg of tetramethylguanidine, add 50Kg of dispersant NNO, keep warm for 1 hour, and spray dry to obtain composite leather dye.

Embodiment 2

[0036] In this example, the selected primary dye is acid brown SG (C.I.Acid Brown348).

[0037] Add 1600Kg of acid brown SG (C.I.Acid Brown348) to 10,000L of water, raise the temperature to 70°C, stir to dissolve completely, add 35Kg of polyethylene glycol 200, 30Kg of polyethylene glycol 600, add 1Kg of hydroxymethyl cellulose, hydroxyethyl Base cellulose 2Kg, add tetraethylenepentamine 20Kg, pentaethylenehexamine 20Kg, add tetramethylguanidine 20Kg, add dispersant MF50Kg, keep warm for 1 hour, spray dry to get composite leather dye.

Embodiment 3

[0039] In this example, the selected primary dye is a compound of acid black NT (C.I.Acid Black210), acid black NBG (C.I.Acid Black234), and direct black HEF (C.I.Direct Black168).

[0040] In 10000L water, add acid black NT (C.I.Acid Black210) 2000Kg, acid black NBG (C.I.Acid Black234) 800Kg, direct black HEF (C.I.Direct Black168) 200Kg, raise the temperature to 60°C, stir and dissolve completely, then add 40Kg polyethylene glycol Alcohol 400, 40Kg polyethylene glycol 600, add hydroxypropyl methylcellulose 3Kg, hydroxyethyl cellulose 2Kg, add triethylenetetramine 30Kg, pentaethylenehexamine 30Kg, add tetramethylguanidine 30Kg, add dispersant NNO60Kg, heat preservation reaction for 1 hour, and spray drying to obtain a composite leather dye.

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Abstract

The invention provides a preparation method of complex leather dye, belonging to the technical field of leather dye. The preparation method solves the problem that the solubility of the leather dye declines due to a salting-out effect of anhydrous sodium sulphate when existing leather dye is commercialized, and the problems, such as uneven dye and low dye-uptake, frequently arise when leather is dyed. The preparation method of the complex leather dye comprises the following steps of: a, mixing the original dye with water, and fully stirring to dissolve the mixture to form a dye water solution; b, adding a commercialized adjuvant into the dye water solution obtained in the step a to perform a reaction; c, dry at a preserved temperature to obtain the complex leather dye. According to the preparation method provided by the invention, the complex leather dye has the advantages of excellent solubility, high affinity to leather, excellent leveling property, high dye-uptake and the like during dyeing, so that the complex leather dye is very suitable for leather dyeing.

Description

technical field [0001] The invention belongs to the technical field of leather dyes, and relates to a preparation method of composite leather dyes. Background technique [0002] The leather industry is a pillar industry in China's light industry. In recent years, with the rapid development of China's leather industry, China is becoming a major leather producer in the world and one of the most active and promising markets for leather trade. Dyeing is an important process in the production of light leather. Through dyeing, the leather can show various bright colors and increase the variety of designs and colors to suit various purposes. Leather dyeing not only needs to give the leather a bright and pure tone, but also requires the color to be as uniform as possible and the dyeing fastness to be high. In the modern tanning industry, there is a certain proportion of suede leather. Because the suede leather is not painted, the color of the suede should be uniform, full of color...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/24C09B67/00C09B67/22D06P3/32D06P1/613D06P1/50D06P1/645D06P1/649
Inventor 徐建成章国栋
Owner JINHUA SHUANGHONG CHEM CO LTD