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High-viscosity and high-toughness leather edge oil based on waterborne polyurethane

A water-based polyurethane and high toughness technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of leather edge oil bursting and falling off, and achieve the effects of not easy to fall off, good viscosity, and improved toughness and strength

Inactive Publication Date: 2019-04-19
GUANGDONG FION LEATHER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-viscosity and high-toughness leather edge oil based on water-based polyurethane to solve the phenomenon of the existing leather edge oil bursting and falling off

Method used

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  • High-viscosity and high-toughness leather edge oil based on waterborne polyurethane
  • High-viscosity and high-toughness leather edge oil based on waterborne polyurethane
  • High-viscosity and high-toughness leather edge oil based on waterborne polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A high-viscosity and high-toughness skin edge oil based on water-based polyurethane, comprising the following components in parts by weight:

[0013]

[0014] The preparation method is as follows:

[0015] Accurately weigh the above materials, and disperse the silica nanoparticles in the organic solvent;

[0016] Add polyether polyol, isophorone diisocyanate, 2,2-dimethylolpropionic acid, polytrimethylene adipate, and catalyst into the reaction kettle, raise the temperature to 85°C, and stir for 4 hours to obtain a prepolymer mixed solution;

[0017] Mix the silica nanoparticles with the prepolymer mixture, stir, then add butanediol, antioxidant, organic solvent,

[0018] Continue to stir, after reacting for 2 hours, add silicone oil, continue to stir to normal temperature, and discharge to obtain the product.

[0019] The leather edge oil prepared above is used for leather goods, and its performance is tested. After verification, the leather edge oil of the prese...

Embodiment 2

[0021] A high-viscosity and high-toughness skin edge oil based on water-based polyurethane, comprising the following components in parts by weight:

[0022]

[0023] Preparation method is the same as embodiment 1

Embodiment 3

[0025] A high-viscosity and high-toughness skin edge oil based on water-based polyurethane, comprising the following components in parts by weight:

[0026]

[0027]

[0028] The preparation method is the same as in Example 1.

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PUM

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Abstract

The invention discloses a high-viscosity and high-toughness leather edge oil based on waterborne polyurethane. The leather edge oil comprises, by weight, 40-50 parts of polyether polyol, 5-6 parts ofisophorone diisocyanate, 0.8-1.2 parts of 2,2-dimethylolpropionic acid, 15-18 parts of polypropylene glycol adipate, 1-2 parts of surface modified silica nanoparticles, 20-25 parts of an organic solvent, 0.1-0.3 part of butylene glycol, 0.1-0.15 part of an antioxidant, 0.1-0.2 part of silicone oil and 0.1-0.2 part of a catalyst. The nanoparticles added to the waterborne polyurethane effectively improve the toughness and the strength of existing waterborne polyurethane leather edge oils, so the leather edge oil in the invention can well meet the oil edge requirements of leather products, achieves good viscosity and no shedding, and is not prone to crack or shed on the leather.

Description

technical field [0001] The invention relates to the technical field of leather manufacture, in particular to a high-viscosity and high-toughness leather edge oil based on water-based polyurethane. Background technique [0002] Leather edge oil is a general term for a class of leather additives used to protect and beautify leather on the surface of leather. It is prepared from film-forming substances, coloring materials, solvents and additives in a certain proportion, and the film-forming substances are leather finishing agents. Foundation. Leather finishing agents also play a very important role in the leather manufacturing industry, which can increase the appearance of leather, prolong the service life of leather, significantly improve the quality and grade of leather products, and increase trade value. [0003] The water-based polyurethane leather edge oil commonly used in the leather goods industry is not viscous and tough enough, which seriously affects the quality of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D175/06C09D7/62C09D7/63C09D7/65
CPCC08K2201/011C09D7/62C09D7/63C09D7/65C09D175/06C09D175/08C08L83/04C08K9/00C08K3/36C08K5/053
Inventor 林斌生黄仕明
Owner GUANGDONG FION LEATHER CO LTD