Chromium-aluminum tanning agent for tanning leather

An aluminum tanning agent and leather technology, which is applied in the field of chrome-aluminum tanning agent, can solve the problems of not being resistant to washing, low shrinkage temperature of finished leather, etc., and achieve the effect of good water resistance, light and thin leather, and soft hand feeling

Inactive Publication Date: 2014-09-10
杨帆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum tanning agent is generally not used to tan leather alone, because the shrinkage temperature of the finished leather is not high and it is not washable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A kind of chrome-aluminum tanning agent that is used for tanning leather described in this embodiment, each component is composed as follows: 19.8 parts of sodium chromate, 19.8 parts of aluminum hydroxide, 1 part of sodium hydroxide, 45 parts of sulfuric acid, 8.1 parts of sulfur dioxide , 1.6 parts of sodium sulfate, 1 part of sodium carboxymethylcellulose, 1 part of sodium bisulfate, 0.3 parts of silicon dioxide, 0.6 parts of ammonium persulfate, and 110 parts of water, all of which are parts by mass.

[0011] The chrome-aluminum tanning agent described in the present embodiment is used for tanning leather, and its beneficial effect is: this agent is made with sodium chromate, aluminum hydroxide, sulfuric acid, sulfur dioxide, sodium sulfate, silicon dioxide etc. as raw material, Since the ingredients are relatively conventional, the low preparation cost is conducive to the widespread use of the agent. And this agent has the following characteristics:

[0012] (1) T...

Embodiment 2

[0018] A kind of chrome-aluminum tanning agent that is used for tanning leather described in this embodiment, each component is composed as follows: 19.8 parts of sodium chromate, 19.8 parts of aluminum hydroxide, 1 part of sodium hydroxide, 55 parts of sulfuric acid, 10 parts of sulfur dioxide , 1.6 parts of sodium sulfate, 1 part of sodium carboxymethylcellulose, 1 part of sodium bisulfate, 0.5 parts of silicon dioxide, 0.6 parts of ammonium persulfate, and 110 parts of water, all of which are parts by mass.

[0019] The chrome-aluminum tanning agent used for tanning leather described in this embodiment, the production and use methods are the same as those in Example 1, and the use effect can be compared with it.

[0020] The chromium-aluminum tanning agent that is used for tanning leather described in this embodiment, its production method is the same as embodiment 1.

Embodiment 3

[0022] The chrome-aluminum tanning agent that is used for tanning leather described in this embodiment, each component is composed as follows: 19.8 parts of sodium chromate, 19.8 parts of aluminum hydroxide, 1 part of sodium hydroxide, 50 parts of sulfuric acid, 10 parts of sulfur dioxide, sulfuric acid 1.6 parts of sodium, 1 part of sodium carboxymethylcellulose, 1 part of sodium bisulfate, 0.5 parts of silicon dioxide, 0.6 parts of ammonium persulfate, and 110 parts of water, all of which are parts by mass.

[0023] The chrome-aluminum tanning agent used for tanning leather described in this embodiment, the production and use methods are the same as those in Example 1, and the use effect can be compared with it.

[0024] The chromium-aluminum tanning agent that is used for tanning leather described in this embodiment, its production method is the same as embodiment 1.

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PUM

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Abstract

The invention discloses a chromium-aluminum tanning agent for tanning leather. The chromium-aluminum tanning agent comprises, by mass ratio, 19.8 parts of sodium chromate, 19.8 parts of aluminum hydroxide, one part of sodium hydroxide, 45 parts to 55 parts of sulfuric acid, 8.1 parts to 10 parts of sulfur dioxide, 1.6 parts of sodium sulfate, one part of sodium carboxymethylcellulose, one part of sodium bisulfate, 0.3 part to 0.5 part of silicon dioxide, 0.6 part of ammonium persulfate and 110 parts of water. The chromium-aluminum tanning agent for tanning leather has the advantages that leather made through the agent can overcome the defects that a single metal aluminum tanning agent is not resistant to water and a single metal chrome tanning agent is dark in hue; leather made though the agent has the advantages of being high in water resistance, high in tension resistance, high in wear resistance and heat resistance, soft in hand feeling and the like; the agent is mainly used for tanning light leather, and can make leather light and thin in quality and make leather surface fine and plump.

Description

technical field [0001] The invention relates to a tanning agent, especially a chrome-aluminum tanning agent for tanning leather. Background technique [0002] Aluminum tanning agent is a kind of aluminum salt with high alkalinity containing masking agent. Aluminum salts that can be used for tanning are aluminum alum, aluminum sulfate and basic aluminum chloride. The first two are commonly used soda ash to make basic aluminum sulfate. The most suitable alkalinity for tanning leather is 50%-60%, but if the alkalinity of aluminum sulfate solution exceeds 23%, precipitation will occur and the tannability will be lost, so sodium citrate needs to be added Alkalinity can be increased to more than 50% only when tartrate is used as a concealing agent; basic aluminum chloride is a good aluminum tanning agent, and the alkalinity is as high as 66% without precipitation without adding a concealing agent. Aluminum tanning agent is generally not used to tan leather alone, because the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/04C14C3/06
Inventor 杨帆
Owner 杨帆
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