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A method for tanning sheepskin based on glutaraldehyde-rare earth metal cerium combined tanning

A technology of rare earth metals and glutaraldehyde, applied in chemical treatment before tanning, small hide/big hide/leather/fur treatment, small hide/big hide/leather/fur chemical treatment, etc., to achieve rich sources and increase shrinkage The effect of temperature

Active Publication Date: 2017-06-16
荆州市新景化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Ma Xiefang, Pu Mingong, etc. have studied or reported metal tanning agents such as iron, aluminum, chromium, manganese or as combined tanning agents with rare earth metal acetates, Shi Bi has studied glutaraldehyde and vegetable tanning agents to carry out combined tanning of leather, and also There are relevant literatures reporting the combined tanning of glutaraldehyde with chromium, and with inorganic tanning agents such as aluminum and zirconium, vegetable tanning agents, and synthetic tanning agents, but there is no relevant report on the combination of glutaraldehyde and rare earth metal cerium as a combined tanning agent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Glutaraldehyde: rare earth metal cerium = 20:0

[0015] (1) Wash 1 g of pickled leather with a solution of 1% fatty alcohol polyoxyethylene ether and 1.5% sodium dodecylsulfonate in a water bath shaker at 35° C. for 1 hour. Rinse frequently with deionized water after washing to remove surface compounds.

[0016] (2) Using glutaraldehyde-rare earth metal cerium in different ratios of glutaraldehyde:rare earth metal cerium=20:0, combined with tanning agent to tan the pickled leather.

[0017] (3) The pickled leather was tanned with glutaraldehyde-rare earth metal cerium combined tanning agent, and shaken in a water bath shaker at a temperature of 35° C. for 7 hours. The initial pH=4, so that the rare earth metal cerium can fully tan the pickled leather. After tanning for 3 hours, adjust the pH to 8, so that glutaraldehyde can fully tan the pickled leather.

[0018] (4) After tanning, put the tanned leather in a cool and ventilated place to dry naturally.

[0019] The T...

Embodiment 2

[0021] Glutaraldehyde: rare earth metal cerium = 20:2

[0022] (1) Wash 1 g of pickled leather with a solution of 1% fatty alcohol polyoxyethylene ether and 1.5% sodium dodecylsulfonate in a water bath shaker at 35° C. for 1 hour. Rinse frequently with deionized water after washing to remove surface compounds.

[0023] (2) Using glutaraldehyde-rare earth metal cerium in different ratios of glutaraldehyde:rare earth metal cerium=20:2, combined with tanning agent to tan the pickled leather.

[0024] (3) The pickled leather was tanned with glutaraldehyde-rare earth metal cerium combined tanning agent, and shaken in a water bath shaker at a temperature of 35° C. for 7 hours. The initial pH=4, so that the rare earth metal cerium can fully tan the pickled leather. After tanning for 3 hours, adjust the pH to 8, so that glutaraldehyde can fully tan the pickled leather.

[0025] (4) After tanning, put the tanned leather in a cool and ventilated place to dry naturally.

[0026] The f...

Embodiment 3

[0028] Glutaraldehyde: rare earth metal cerium = 20:3

[0029] (1) Wash 1 g of pickled leather with a solution of 1% fatty alcohol polyoxyethylene ether and 1.5% sodium dodecylsulfonate in a water bath shaker at 35° C. for 1 hour. Rinse frequently with deionized water after washing to remove surface compounds.

[0030] (2) Using glutaraldehyde-rare earth metal cerium in different ratios of glutaraldehyde:rare earth metal cerium=20:3, combined with tanning agent to tan the pickled leather.

[0031] (3) The pickled leather was tanned with glutaraldehyde-rare earth metal cerium combined tanning agent, and shaken in a water bath shaker at a temperature of 35° C. for 7 hours. The initial pH=4, so that the rare earth metal cerium can fully tan the pickled leather. After tanning for 3 hours, adjust the pH to 8, so that glutaraldehyde can fully tan the pickled leather.

[0032] (4) After tanning, put the tanned leather in a cool and ventilated place to dry naturally.

[0033] The f...

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PUM

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Abstract

The invention belongs to the field of leather tanning processes, and discloses a method for tanning wet white sheepskin by employing a glutaraldehyde-rare-earth metal cerium combination tannage preparation. In a traditional chrome tanning process, chrome causes pollution in the tanning process, and harms the ecological environment. In China cerium salt has rich resource and has the great application potential in leather industry. Due to the glutaraldehyde-rare-earth metal cerium combination tannage preparation disclosed by the invention, the pollution to the environment caused by cerium is reduced; the shrinkage temperature of leather is increased; and the leather T-s tanned by the combination tannage preparation can reach over 90 DEG C.

Description

technical field [0001] The invention belongs to the technical field of leather tanning, in particular to a method for tanning wet white sheepskin with glutaraldehyde-rare earth metal cerium combined tanning agent. Background technique [0002] In the pollution discharge liquid of the leather industry for environmental protection, the main harmful and toxic substances with serious hazards are sulfide and chromium ions, which are unanimously recognized at home and abroad, but the tanning agents used in the leather industry today are dominated by chrome tanning. Location. my country's rare earth resources are complete in variety and high in quality, and their reserves can be called the first in the world. It is rich in rare earth metal cerium salt, and it has great application potential in the leather industry. And with the development of leather scientific research technology, it is found that the improvement of the high thermal stability of leather can increase the shrinkag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C3/28C14C1/00
CPCC14C3/04C14C3/16C14C3/28
Inventor 高海燕陈秦君岳娟徐宇
Owner 荆州市新景化工有限责任公司