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A kind of environment-friendly leather finishing agent and preparation method thereof

A leather finishing agent, an environment-friendly technology, applied in the field of leather processing, can solve problems such as environmental pollution, and achieve the effects of strong operability, dense coating film, and less difficulty in process control

Inactive Publication Date: 2018-08-31
安徽百益鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned deficiency of environmental pollution in the leather finishing agent using acrylamide derivatives as crosslinking agents in the prior art, and provide an environmentally friendly leather finishing agent and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An environmentally friendly leather finishing agent, prepared from the following raw materials in weight percentage: 25% ethyl acrylate, 3% acrylic acid, 5% sodium lauryl sulfate, 0.2% potassium persulfate, 0.3% sodium dithionite, Zinc oxide 5%, the balance is water.

[0026] The preparation method of this leather finishing agent, comprises the following steps:

[0027] S1. Mix ethyl acrylate, acrylic acid and emulsifier evenly, and pre-emulsify for 1 hour to obtain a pre-emulsion;

[0028] S2, adding the initiator into water and mixing uniformly to obtain an aqueous solution of the initiator;

[0029] S3. Add the aqueous initiator solution to the pre-emulsion to initiate polymerization. When the temperature drops to 50°C, add zinc oxide to the reaction solution and mix evenly. When the temperature drops to 25°C, add an appropriate amount of Adjust the pH value to 7.2 with ammonia water and cool down to room temperature to obtain a leather finishing agent.

[0030] A...

Embodiment 2

[0032] An environmentally friendly leather finishing agent, prepared from the following raw materials in weight percentage: 15% ethyl acrylate, 1% acrylic acid, 3% sodium lauryl sulfate, 0.1% potassium persulfate, 0.1% sodium dithionite, Zinc oxide 2%, the balance is water.

[0033] The preparation method of this leather finishing agent, comprises the following steps:

[0034] S1. Mix ethyl acrylate, acrylic acid and emulsifier evenly, and pre-emulsify for 0.5h to obtain a pre-emulsion;

[0035] S2, adding the initiator into water and mixing uniformly to obtain an aqueous solution of the initiator;

[0036] S3. Add the aqueous initiator solution to the pre-emulsion to initiate polymerization. When the temperature drops to 45°C, add zinc oxide to the reaction solution and mix evenly. When the temperature drops to 20°C, add an appropriate amount of Adjust the pH value to 7.1 with ammonia water and cool down to room temperature to obtain a leather finishing agent.

[0037] Acc...

Embodiment 3

[0039] An environmentally friendly leather finishing agent prepared from the following raw materials in weight percentage: 40% ethyl acrylate, 8% acrylic acid, 10% sodium lauryl sulfate, 0.4% ammonium persulfate, and 0.4% sodium bisulfite , zinc oxide 8%, the balance is water.

[0040]The preparation method of this leather finishing agent, comprises the following steps:

[0041] S1. Mix ethyl acrylate, acrylic acid and emulsifier evenly, and pre-emulsify for 1.5 hours to obtain a pre-emulsion;

[0042] S2, adding the initiator into water and mixing uniformly to obtain an aqueous solution of the initiator;

[0043] S3. Add the aqueous initiator solution to the pre-emulsion to initiate polymerization. When the temperature drops to 55°C, add zinc oxide to the reaction solution and mix evenly. When the temperature drops to 30°C, add an appropriate amount of Adjust the pH value to 7.3 with ammonia water and cool down to room temperature to obtain a leather finishing agent.

[00...

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PUM

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Abstract

The invention discloses an environment-friendly leather finishing agent and a preparing method thereof, and belongs to the technical field of leather processing. The leather finishing agent is prepared from, by weight, 15-40% of ethyl acrylate, 1-8% of acrylic acid, 3-10% of an emulsifying agent, 0.2-0.8% of an initiating agent, 2-8% of a cross-linking agent and the balance water. Compared with the prior art, the step of adding the initiating agent and monomers dropwise is omitted in the preparing method, and the preparing method has the advantages of being low in technical control difficulty, high in maneuverability, simple, low in cost and the like. Zinc oxide is used for replacing acrylamide derivative to serve as the cross-linking agent, zero emission of formaldehyde is achieved, and the prepared leather finishing agent has excellent ductility.

Description

technical field [0001] The invention belongs to the technical field of leather processing, in particular to an environment-friendly leather finishing agent and a preparation method thereof. Background technique [0002] Leather finishing agents are mainly used for leather modification, especially in the process of polishing and ironing of various front leathers and buffed leathers. Leather finishing agents can firmly bond the coating to the leather surface and improve The high-temperature ironing and polishing properties of leather, and the leather finishing agent can also maintain the hygienic properties unique to natural leather. Among them, acrylic resin is the most widely used film-forming substance in leather finishing materials. It has the characteristics of strong adhesion, smooth application, brightness, flex resistance, large extensibility and stable structure. Acrylamide derivatives such as methylolacrylamide are usually added in the existing acrylic resin prepara...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/08C09D7/61C14C11/00C08F220/18C08F220/06
CPCC08F220/18C08K3/22C08K2003/2296C09D7/61C09D133/08C14C11/003C08F220/06
Inventor 不公告发明人
Owner 安徽百益鞋业有限公司
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