Method for preparing zirconium-aluminum multi-metal tanning liquor

A multi-metal, tanning liquid technology, applied in small raw hides/large raw hides/leather/fur treatment, tanning treatment, small raw hides/large raw hides/leather hides/fur chemical treatment, etc. Good reaction performance, saving raw material consumption and improving stability

Inactive Publication Date: 2011-10-05
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a zirconium-aluminum polymetallic complex tanning liquor and its preparation method in view of the deficiencies of the prior art, which is characterized in that it can realize chrome-free tanning and solve the chromium pollution in the leather industry from the source The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of zirconium sulfate solution

[0033] Dissolve 0.7 parts by weight of zirconium sulfate solid with 100 parts by weight of a 0.1mol / L sulfuric acid aqueous solution to form a solution;

[0034] (2) Preparation of aluminum sulfate solution

[0035] Dissolve 2.5 parts by weight of aluminum sulfate solid with 200 parts by weight of a sulfuric acid aqueous solution with a concentration of 0.63 mol / L to form a solution;

[0036] (3) Preparation of sodium citrate solution

[0037] Dissolve 0.6 parts by weight of sodium citrate solid with 100 parts by weight of distilled water to form a solution;

[0038] (4) Preparation of sodium citrate masking complex

[0039] Add the above-mentioned zirconium sulfate solution, aluminum sulfate solution and sodium citrate solution into the reactor, adjust the pH value to 1.5 with 0.1 mol / L sodium hydroxide, stir evenly and let stand for 24 hours.

Embodiment 2

[0041] (1) Preparation of zirconium sulfate solution

[0042] Dissolve 1.4 parts by weight of zirconium sulfate solid with 200 parts by volume of a 0.1mol / L sulfuric acid aqueous solution into a solution;

[0043] (2) Preparation of aluminum sulfate solution

[0044] Dissolve 4 parts by weight of aluminum sulfate solid into a solution with 300 parts by volume of a sulfuric acid aqueous solution with a concentration of 0.63 mol / L;

[0045] (3) Preparation of sodium oxalate solution

[0046] Dissolve 0.5 parts by weight of sodium oxalate solid with 200 parts of distilled water to form a solution;

[0047] (4) Preparation of sodium oxalate masked complex

[0048] Add the above-mentioned zirconium sulfate solution, aluminum sulfate solution and sodium oxalate solution into the reactor, adjust the pH value to 2.0 with 0.1 mol / L sodium hydroxide, stir evenly, and stand for 24 hours.

Embodiment 3

[0050] (1) Preparation of zirconium sulfate solution

[0051] Dissolve 1 part by weight of zirconium sulfate solid into a solution with 150 parts by volume of a sulfuric acid aqueous solution with a concentration of 0.1 mol / L;

[0052] (2) Preparation of aluminum sulfate solution

[0053] Dissolve 1.3 parts by weight of aluminum sulfate solid into a solution with 100 parts by volume of a sulfuric acid aqueous solution with a concentration of 0.63 mol / L;

[0054] (3) Preparation of sodium lactate solution

[0055] Dissolve 0.7 parts by weight of sodium lactate solid with 300 parts of distilled water to form a solution;

[0056] (4) Preparation of sodium lactate masking complex

[0057] Add the above-mentioned zirconium sulfate solution, aluminum sulfate solution and sodium lactate solution into the reactor, adjust the pH value to 2.5 with 0.1 mol / L sodium hydroxide, stir evenly, and stand for 24 hours to mature.

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Abstract

The invention discloses zirconium-aluminum multi-metal tanning liquor and a preparation method thereof. The preparation method is characterized by comprising the following steps of: dissolving 5 to 20 weight parts of zirconium sulfate and 20 to 80 weight parts of aluminum sulfate by using 0.2-0.8mol/L aqueous solution of sulfuric acid into solutions at different concentrations, mixing, and adding 0.5 to 10 weight parts of masking agent to obtain the zirconium-aluminum multi-metal tanning liquor. The multi-metal tanning liquor is applied to tanning cowhide and goat leather so as to realize chromium-free tanning and radically treat chromium pollution.

Description

Technical field [0001] The invention relates to a method for preparing a zirconium-aluminum multi-metal compound tanning liquid. Background technique [0002] In recent years, my country's leather industry has developed rapidly and has become the world's leather industry processing center and trade center. In the tanning industry, chrome tanning has been dominating the tanning field since its application due to the superior properties of chrome salt. However, hexavalent chromium is toxic. Long-term and large-scale use of chrome tanning agents will cause greater harm to the ecological environment and humans. Therefore, the development trend of the leading tanning agent in the leather industry in the future must be ecological tanning agents (or green tanning agents). ). [0003] Chrome-free metal tanning agents include aluminum tanning agents, zirconium tanning agents, titanium tanning agents, iron tanning agents, rare earth (auxiliary) tanning agents, etc. This kind of tanning ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/02C14C3/08
Inventor 但卫华陈哲但年华刘兰王康建
Owner SICHUAN UNIV
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