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Dyeing and retanning tanning process

A process and trans-dyeing technology, applied in dyeing method, chemical treatment before tanning, small hide/big hide/leather/fur treatment, etc., can solve problems such as heating and heating, reduce production cost, simple and stable process, foaming Feel good effect

Active Publication Date: 2011-05-11
禾瑞(漳州)助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process involved in the above patent still needs to be heated up and washed twice in the middle, so it needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the present invention is achieved in this way, including the softening and through-dyeing process and the fixation and fixing process successively. 100 parts of wet leather, add 15 parts of MND1717, 1 part of MND3009, 1 part of MND203125, 3 parts of MND7010, 1 part of baking soda, 4 parts of dye, including 2 parts of acid dye (such as acid black) and 2 parts of direct dye (such as direct black) For more than 2 hours, after checking the core, stop the drum overnight; the fixation process includes adding formic acid to the drum with 100 parts of skin blanks after the softening and penetrating dyeing process in the same bath. 2 parts, 2 parts of MND1717, adjust the pH to 3.5-3.0, then add 5 parts of chrome tanning agent, 2 parts of MND3009, 10 parts of MND2031, 2 parts of glutaraldehyde or fatty aldehyde, 0.2-0.5 parts of fungicide, turn 4 After more than an hour, the drum is washed out with water, and then enters the finishing process according to the conven...

Embodiment 2

[0028] Embodiment 2: On the basis of Embodiment 1, the present invention sequentially includes softening and penetrating dyeing process, color fixing process, and its special feature is that softening and penetrating dyeing process includes adding 130 parts of normal temperature water into the drum by weight , add 100 parts of wet blue leather, add 8 parts of MND1717, 3 parts of MND3009, 10 parts of MND2031, 10 parts of MND2010, 1 part of MND7010, 2 parts of sodium formate or sodium acetate, 1 part of ammonium bicarbonate, 2 parts of dyes, dyes include acid dyes ( Such as acid black) 1.5 parts, direct dyes (such as direct black) 0.5 parts, turn for more than 2 hours, check the core, stop the drum overnight; the color fixing process includes the process of softening and penetrating in the same bath Add 4 parts of formic acid and 1 part of MND1717 to the drum of 100 parts of skin after soft penetration dyeing, adjust the pH to 3.5-3.0, then add 10 parts of chrome tanning agent, 1...

Embodiment 3

[0029] Embodiment 3, on the basis of Embodiment 1, the present invention sequentially includes softening and penetrating dyeing process, color fixing process, and its special feature is that softening and penetrating process includes adding 100 parts of normal temperature water into the drum by weight , add 100 parts of wet blue leather, add 11 parts of MND1717, 1.5 parts of MND3009, 15 parts of MND2031, 5 parts of MND2010, 1.5 parts of MND7010, 1 part of sodium formate or sodium acetate, 0.5 parts of baking soda, 0.5 parts of ammonium bicarbonate, 3 parts of dye, The dyes include 2 parts of acid dyes (such as acid black), 1 part of direct dyes (such as direct black), and turn them for more than 2 hours. After checking the core, stop the drum overnight; Add 3 parts of formic acid, 1.5 parts of MND1717, and adjust the pH to 3.5-3.0, then add 7 parts of chrome tanning agent, 1.5 parts of MND3009, and 15 parts of MND2031 , 5 parts of MND2010, 1 part of glutaraldehyde or aliphatic...

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Abstract

The invention relates to a dyeing and retanning tanning process, which comprises a softening and through-dyeing process and a color fixing and fixing process. The dyeing and retanning tanning process is characterized in that: the softening and through-dyeing process comprises the steps of adding normal-temperature water, wet blue leather, MND1717, MND3009, MND2031, MND2010, MND7010, sodium formate or sodium acetate, sodium bicarbonate, ammonium bicarbonate and dye by weight into a revolving drum, revolving for more than 2 hours, checking that the center of the obtained product is penetrated, stopping the drum, and keeping stand the obtained product overnight; and the color-fixing and fixing process comprises the steps of adding methanoic acid and MND1717 into a drum provided with a leather blank subjected to softening and through-dyeing treatments in the softening and through-dyeing process, in the same bath, adjusting the pH value, adding a chrome tanning agent, MND3009, MND2031, MND2010, glutaraldehyde or fatty aldehyde, and a mildew inhibitor into the drum, revolving for more than 4 hours, rinsing, taking the obtained product out of the drum, coating and finishing according to the conventional process. Compared with the prior art, the dyeing and retanning tanning process has the advantages of simple process, wide scope of application, capability of improving the quality of finished leather, raw material and labor saving, reduction of labor intensity, energy saving, effective reduction of wastewater discharge, and lower manufacturing cost.

Description

technical field [0001] The invention relates to a tanning technology. Background technique [0002] Over the decades since the founding of New China, the traditional tanning industry has made great contributions to the revitalization of the national economy. However, due to its insurmountable disadvantages such as high energy consumption, high water consumption, and high pollutant discharge, it has also increasingly affected the sustainable development of the economy. The more serious the impact, therefore, under the current situation of vigorously advocating water saving, emission reduction, energy saving and environmental protection, the traditional tanning concept and the corresponding tanning materials and tanning technology will also face a revolution. [0003] In addition to the pre-treatment stage of the traditional tanning process, the raw hides are preserved by salting, soda ash degreasing, machine plucking, ash (sodium sulfide, lime) or enzymes on the buttocks, alk...

Claims

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Application Information

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IPC IPC(8): C14C3/02C14C3/04C14C3/22C14C1/08D06P3/32D06P1/44D06P5/02
Inventor 阳庆文王雪梅赵志明
Owner 禾瑞(漳州)助剂有限公司
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