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Preparation method of leather polishing agent

A brightener and leather technology, applied in the field of leather brightener preparation, can solve the problems of affecting the appearance and maintenance of leather products, restricting the overall quality of leather, and poor film-forming properties of brighteners, etc., achieving good low-temperature performance, wide molecular weight distribution, and film-forming The effect of defect avoidance

Inactive Publication Date: 2018-10-23
张玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The brighteners prepared by the above patents and the prior art have poor film-forming properties, and most of them tend to turn yellow after a long period of light, which greatly affects the appearance of leather products and the later maintenance, which limits the improvement of the overall quality of leather.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of a leather brightener, the preparation technical scheme is as follows:

[0019] According to the mass fraction, 3 parts of polyvinyl alcohol, 4 parts of dodecylphenol polyoxyethylene ether, 35 parts of propylene glycol, 7 parts of palm wax, 3 parts of polyaminopropyl biguanide stearate, 50 parts Add 80 parts of Tween 80 and 180 parts of purified water into the reaction kettle, control the temperature at 45°C, and stir rapidly for 40 minutes to emulsify evenly; then 58 parts of nitrocellulose, 15 parts of bis(2-ethylhexyl) hydrogen phosphate , 8 parts of liquid paraffin, 4.5 parts of boron-containing polyester plasticizer, 40 parts of polyoxyisobutylene / methylene urea copolymer, 8 parts of triethanolamine dodecylbenzenesulfonate, 13 parts of Add oily emulsifier and 230 parts of organic solvent into the reaction kettle, heat to reflux, stir until completely dissolved, and obtain a mixed solution; slowly add the obtained mixed solution into the react...

Embodiment 2

[0027] A preparation method of a leather brightener, the preparation technical scheme is as follows:

[0028] According to the mass fraction, 1 part of polyvinyl alcohol, 2 parts of dodecylphenol polyoxyethylene ether, 30 parts of propylene glycol, 5 parts of palm wax, 1 part of polyaminopropyl biguanide stearate, 40 parts 80 parts of Tween and 150 parts of purified water were added to the reaction kettle, the temperature was controlled at 40°C, and the emulsification was evenly stirred for 30 minutes; then 53 parts of nitrocellulose, 12 parts of bis(2-ethylhexyl) hydrogen phosphate , 5 parts of liquid paraffin, 2.1 parts of boron-containing polyester plasticizer, 30 parts of polyoxyisobutylene / methylene urea copolymer, 5 parts of triethanolamine dodecylbenzenesulfonate, 10 parts of Add oily emulsifier and 200 parts of organic solvent into the reaction kettle, heat to reflux, stir until completely dissolved, and obtain a mixed solution; slowly add the obtained mixed solution i...

Embodiment 3

[0036] A preparation method of a leather brightener, the preparation technical scheme is as follows:

[0037] According to the mass fraction, 5 parts of polyvinyl alcohol, 6 parts of dodecylphenol polyoxyethylene ether, 40 parts of propylene glycol, 10 parts of palm wax, 5 parts of polyaminopropyl biguanide stearate, 60 parts Add 80 parts of Tween and 200 parts of purified water into the reaction kettle, control the temperature at 50°C, and stir rapidly for 60 minutes to emulsify evenly; then add 66 parts of nitrocellulose, 12-18 parts of bis(2-ethylhexyl) phosphoric acid Hydrogen ester, 12 parts of liquid paraffin, 6.5 parts of boron-containing polyester plasticizer, 50 parts of polyoxyisobutylene / methylene urea copolymer, 10 parts of triethanolamine dodecylbenzenesulfonate, 15 parts Add 250 parts of oily emulsifier and 250 parts of organic solvent into the reaction kettle, heat to reflux, stir until completely dissolved, and obtain a mixed solution; slowly add the obtained m...

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Abstract

The invention relates to a preparation method of a leather polishing agent. The preparation method comprises the following steps of adding the following components in parts by mass into a reaction kettle, wherein the raw materials comprise 53 to 66 parts of nitrocotton, 12 to 18 parts of bis(2-ethyl hexyl)hydrophosphate, 5 to 12 parts of liquid paraffin, 2.1 to 6.5 parts of boron-containing polyester plasticizer, 30 to 50 parts of polyoxyisobutyl / methylene urea copolymer, 5 to 10 parts of dodecyl benzene sulfonate triethanolamine, 10 to 15 parts of oil emulsifier and 200 to 250 parts of organic solvent, so as to obtain a mixed solution; stirring at high speed, slowly adding the obtained mixed solution into a water-phase reaction kettle, finishing dripping within 60 to 90min, and continuingto disperse for 40 to 60min, so as to obtain the leather polishing agent.

Description

technical field [0001] The invention relates to the field of preparation of leather auxiliary agents, in particular to a preparation method of a leather brightener. Background technique [0002] As a leather top coating material, leather brightener has a vital impact on the appearance, hygiene and mechanical properties of leather products. In recent years, domestic and foreign tanners have done a lot of research on leather brighteners. [0003] CN105062369A discloses a leather brightener, which is composed of the following raw materials in weight ratio: 30-50% of rigid polyurethane; 2-6% of leveling agent; 2-6% of hand feeling agent; 5-15% of wax emulsion; of water. The leather brightener provided by this invention not only plays the role of natural light in the top coating and spraying of artificial leather and shoe leather, but also has a good hand feeling comparable to natural leather, and improves the wear resistance of leather, prolongs the service life of leather, an...

Claims

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Application Information

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IPC IPC(8): C09G1/10C14C11/00
CPCC09G1/10C14C11/003
Inventor 王大可张媛媛
Owner 张玲