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Top coating resin for surface treatment of genuine leather

A surface treatment and resin technology, applied in the field of anionic aliphatic water-based polyurethane resin and its processing, can solve the problems of poor decoration effect, large organic solvent, poor comprehensive performance of water-based polyurethane, etc.

Inactive Publication Date: 2013-05-22
科控环保材料(韶关)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to reasons such as synthesis technology and raw material prices, most of the researches and developments in China are aromatic water-based polyurethanes. The preparation method mainly adopts the acetone method, which consumes a large amount of organic solvents and causes great pollution to the environment during the production process. The prepared water-based polyurethanes The overall performance of the resin is poor, especially it is easy to turn yellow, and the decorative effect is poor. The application and research of aliphatic waterborne polyurethane resin in large waterborne coatings need to be deepened

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one, its prescription is calculated by mass percentage, by the polyether of 15%, the polycaprolactone glycol of 30%, the polyester glycol of 10%, the polytetramethylene ether glycol of 5% ( PTMEG), 5% dimethylolpropionic acid (DMPA), 1% ethylene glycol, 2% trimethylolpropane, 16% isophorone diisocyanate (IPDI), 7% triethylene glycol Amine, 8% ethylenediamine, 1% organic bismuth catalyst and appropriate amount of deionized water are polymerized by acetone method. The specific process is as above.

Embodiment 2

[0028] Embodiment two, its prescription is calculated by mass percentage, by the polyether of 10%, the polycaprolactone glycol of 15%, the polyester glycol of 5%, the polytetramethylene ether glycol of 10% ( PTMEG), 10% dimethylolpropionic acid (DMPA), 2% ethylene glycol, 3% trimethylolpropane, 26% isophorone diisocyanate (IPDI), 9% triethylene glycol Amine, 9% ethylenediamine, 1% organic bismuth catalyst and appropriate amount of deionized water are polymerized by acetone method. The specific process is as above.

Embodiment 3

[0029] Embodiment three, its prescription is calculated by mass percent, by the polyether of 6%, the polycaprolactone glycol of 12%, the polyester glycol of 9%, the polytetramethylene ether glycol of 14% ( PTMEG), 13% dimethylolpropionic acid (DMPA), 2% ethylene glycol, 4% trimethylolpropane, 26% isophorone diisocyanate (IPDI), 7% triethylene glycol Amine, 6% ethylenediamine, 1% organic bismuth catalyst and appropriate amount of deionized water are polymerized by acetone method. The specific process is as above.

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PUM

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Abstract

The invention relates to a top coating resin for surface treatment of genuine leather. The top coating resin is synthesized from following components in percentage by mass by using an acetone process: 5-15% of polyether, 10-30% of polycaprolactone diatomic alcohol, 5-10% of polyester diatomic alcohol, 5-15% of poly-tetramethylene ether glycol (PTMEG), 5-15% of dimethylolpropionic acid (DMPA), 1-5% of glycol, 2-5% of trimethylolpropane, 10-40% of isophorone diisocyanate (IPDI), 1-9% of triethylamine, 1-9% of ethidene diamine, 0.001-1% of an organic bismuth catalyst and a proper amount of deionized water. The top coating resin for surface treatment of genuine leather has the characteristics of smooth film formation, high brightness, no stickiness, flexible paint film, chemical resistance, high-temperature resistance, wear resistance, transparence, crystal feeling, water resistance, moisture resistance and ultraviolet resistance and cannot yellow, and the elongation of the resin reaches 300-400%. The top coating resin can be used in a roller coating way or a spray coating way.

Description

technical field [0001] The invention relates to the technical field of waterborne polyurethane resin, in particular to an anionic aliphatic waterborne polyurethane resin used for leather surface treatment and a processing method thereof. Background technique [0002] Traditional solvent-based coatings contain a large amount of solvents such as benzene, esters, and ketones. Polyurethane coatings also contain free isocyanate. These volatile substances are poisonous to the human body to varying degrees and also pollute the atmosphere. With the increasing emphasis on environmental protection and the increasingly stringent and demanding requirements of environmental protection laws and regulations around the world, water-based coatings have emerged as the times require. Water-based polyurethane uses water as the dispersion medium. It not only has the excellent properties of solvent-based polyurethane, such as low temperature resistance, good flexibility, and anti-adhesion, but al...

Claims

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Application Information

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IPC IPC(8): C08G18/75C08G18/66C08G18/48C08G18/42C14C11/00
Inventor 李武建欧阳艳爱
Owner 科控环保材料(韶关)有限公司