Volatile waterborne polyurethane coating

A water-based polyurethane and coating technology, applied in the field of coatings, can solve the problems of easy cracking of leather, leather sticking to the skin, thermal stickiness and brittleness, etc., and achieve the effect of excellent mechanical properties, overcoming thermal stickiness and brittleness, and strong covering power

Pending Publication Date: 2021-10-08
清远市美佳乐环保新材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing leather finishing agent materials usually use acrylic resin, which is the most widely used type in the world, and its annual output accounts for about 70% of the leather finishing agent. From the aspects of production cost, process and comprehensive performance, acrylic resin Compared with other chemical ma

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: In this embodiment, the volatile water-based polyurethane coating is prepared from the following raw materials by weight:

[0023] 15 parts by weight of neopentyl glycol, 5 parts by weight of adipic acid, 10 parts by weight of trimellitic anhydride, 5 parts by weight of tetraisopropyl titanate, 20 parts by weight of xylene, 10 parts by weight of acetone, 10% phosphoric acid (toluene) ) liquid 15 weight parts, 50% phenol (toluene) liquid 10 weight parts, N-toluenediethanolamine 5 weight parts, triethylamine 10 weight parts, ethylenediamine 5 weight parts, silicone resin 5 weight parts, adhesive 20 parts by weight, 10 parts by weight of thickener, 10 parts by weight of deionized water;

[0024] The binder is 2,2-dimethylolpropionic acid, and the thickener is a polyurethane thickener, which is synthesized by diisocyanate and polyethylene glycol in the presence of a blocking agent.

[0025] The preparation method includes the following steps:

[0026] (1) Ad...

Embodiment 2

[0031] Embodiment 2: In this embodiment, the volatile water-based polyurethane coating is prepared from the following raw materials by weight:

[0032] 45 parts by weight of neopentyl glycol, 20 parts by weight of adipic acid, 30 parts by weight of trimellitic anhydride, 15 parts by weight of tetraisopropyl titanate, 30 parts by weight of xylene, 30 parts by weight of acetone, 10% phosphoric acid (toluene) ) liquid 30 weight parts, 50% phenol (toluene) liquid 20 weight parts, N-toluenediethanolamine 15 weight parts, triethylamine 30 weight parts, ethylenediamine 15 weight parts, silicone resin 15 weight parts, adhesive 40 parts by weight, 30 parts by weight of thickener, 30 parts by weight of deionized water;

[0033] Wherein, the binder is diphenylmethane-4,4'-diisocyanate, and the thickener is a polyurethane thickener.

[0034] The preparation method includes the following steps:

[0035] (1) Add neopentyl glycol, adipic acid, trimellitic anhydride and binder into the reac...

Embodiment 3

[0040] Embodiment 3: In this embodiment, the volatile water-based polyurethane coating is prepared from the following raw materials by weight:

[0041] 17 parts by weight of neopentyl glycol, 8 parts by weight of adipic acid, 12 parts by weight of trimellitic anhydride, 8 parts by weight of tetraisopropyl titanate, 22 parts by weight of xylene, 12 parts by weight of acetone, 10% phosphoric acid (toluene) ) liquid 17 weight parts, 50% phenol (toluene) liquid 17 weight parts, N-toluenediethanolamine 8 weight parts, triethylamine 12 weight parts, ethylenediamine 8 weight parts, silicone resin 10 weight parts, adhesive 22 parts by weight, 12 parts by weight of thickener, 12 parts by weight of deionized water;

[0042] Wherein, the binder is a mixture of 2,2-dimethylolpropionic acid and diphenylmethane-4,4'-diisocyanate, and the thickener is a polyurethane thickener.

[0043] The preparation method includes the following steps:

[0044](1) Add neopentyl glycol, adipic acid, trime...

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Abstract

The invention discloses a volatile waterborne polyurethane coating and a preparation method thereof. The coating comprises the following components in parts by weight: 15 to 45 parts of neopentyl glycol, 5 to 20 parts of adipic acid, 10 to 30 parts of benzenetrimellitic anhydride, 5 to 15 parts of tetraisopropyl titanate, 20 to 30 parts of xylene, 10 to 30 parts of acetone, 15 to 30 parts of 10% phosphoric acid (toluene) liquid, 10 to 20 parts of 50% phenol (toluene) liquid, 5 to 15 parts of N-toluene diethanolamine, 10 to 30 parts of triethylamine, 5 to 15 parts of ethylenediamine, 5 to 15 parts of organic silicon resin, 20 to 40 parts of an adhesive, 10 to 30 parts of a thickening agent and 10 to 30 parts of deionized water. According to the volatile waterborne polyurethane coating, the organic silicon resin is added, so that the adhesiveness between different substrates for synthetic leather and a polyurethane coating material can be enhanced, the coating property and the adhesive force are correspondingly improved, meanwhile, the hydrolysis-resistant and smooth feeling is brought, and the volatile waterborne polyurethane coating can replace a toxic polyaziridine cross-linking agent.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a volatile water-based polyurethane coating. Background technique [0002] Leather finishing agent is a general term for a class of leather auxiliaries used to protect and beautify leather surface. The basics. Leather finishing agents also play a very important role in the leather manufacturing industry, which can increase the beauty of leather, prolong the use time of leather, significantly improve the quality and grade of leather products, and increase trade value. [0003] Existing leather finishing agents are usually made of acrylic resin, which is the most used type in the world, and its annual output accounts for about 70% of leather finishing agents. Compared with other chemical materials, the finishing material has many advantages, but its only defect is "hot sticking and cold brittleness". When the temperature is high, the leather will stick to the skin, and when the ...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D7/65C09D7/20C09D183/04C08G18/76C08G18/42C08G18/46C14C11/00D06N3/14D06N3/12
CPCC09D175/06C09D7/65C09D7/20C08G18/7621C08G18/4208C08G18/4615C14C11/006D06N3/146D06N3/147D06N3/128D06N2209/103D06N2209/108C08L83/04
Inventor 梅子能关仲翔姚文佩
Owner 清远市美佳乐环保新材股份有限公司
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