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Self-extinction water-based polyurethane and preparation method thereof

A water-based polyurethane, self-extinguishing technology, used in polyurea/polyurethane coatings, coatings, etc., can solve problems such as unsatisfactory matting effect

Inactive Publication Date: 2019-01-11
LUOYANG SHENGJIA CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing two-component mixed matting resin, the purpose of matting is achieved according to the principle of different resin particle diameters or specific gravity, and the matting effect is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of component A of high film-forming temperature waterborne polyurethane:

[0037] (1) Add 193 parts of polybutylene adipate diol (M W , 2000), 18 parts of sulfonate oligomer diol (M W ,1000), 126 parts of isophorone diisocyanate (IPDI), 7 parts of dimethylol propionic acid (DMPA), 9 parts of 1,4-butanediol and 60 parts of methyl ethyl ketone were added to the reactor and stirred Under 70~90℃ for 5 hours;

[0038] (2) Cool down to 40°C, add 5 parts of triethylamine and 30 parts of acetone to form a salt for 10 minutes;

[0039] (3) Add 370 parts of deionized water under high-speed stirring, then add a mixed solution of 42 parts of isophorone diamine and 155 parts of water for chain extension, and then stir at high speed for 30 minutes. After the chain extension reaction is completed, the solvent is distilled off under reduced pressure , to obtain a white aqueous polyurethane dispersion. The solid content of the dispersion is 43.1%, and the viscosity is 78...

Embodiment 2

[0047] Preparation of component A of high film-forming temperature waterborne polyurethane:

[0048] (1) Add 180 parts of polyhexamethylene adipate diol (M W , 2000), 20 parts of sulfonate oligomer diol (M W ,1000), 122 parts of isophorone diisocyanate (IPDI), 8 parts of dimethylol propionic acid (DMPA), 8 parts of 1,4-butanediol and 60 parts of methyl ethyl ketone were added to the reactor and stirred Under the temperature of 70~90℃, react for 5 hours;

[0049] (2) Cool down to 40°C, add 6 parts of triethylamine and 30 parts of acetone to form a salt for 10 minutes;

[0050](3) Add 370 parts of water under high-speed stirring, then add a mixed solution of 40 parts of isophorone diamine and 155 parts of water to carry out chain extension, and then stir at high speed for 30 minutes. After the chain extension reaction is completed, the solvent is removed under reduced pressure to obtain White aqueous polyurethane dispersion. The solid content of the dispersion is 42.2%, and ...

Embodiment 3

[0058] (1) 186 parts of polycaprolactone diol (M W , 2000), 20 parts of sulfonate oligomer diol (M W , 1000), 126 parts of isophorone diisocyanate (IPDI), 8 parts of dimethylolpropionic acid (DMPA), 12 parts of ethyl butyl propylene glycol and 60 parts of butanone were added to the reactor, under stirring, Temperature 70~90℃, react for 5 hours;

[0059] (2) Cool down to 40°C, add 5 parts of triethylamine and 30 parts of acetone to form a salt for 10 minutes;

[0060] (3) Add 370 parts of water under high-speed stirring, then add a mixed solution of 38 parts of isophorone diamine and 155 parts of water to carry out chain extension, and then stir at high speed for 30 minutes. After the chain extension reaction is completed, the solvent is distilled off under reduced pressure to obtain White aqueous polyurethane dispersion. The solid content of the dispersion is 42.9%, and the viscosity is 91.7mPa. s, the particle size is 610nm;

[0061] Preparation of B-component of waterbo...

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Abstract

The invention discloses self-extinction water-based polyurethane resin and a preparation method thereof. The resin comprises resin A and resin B having different film forming temperatures, wherein theresin A is prepared from the following raw materials in parts by weight: 100-200 parts of polyester polyol M, 5-30 parts of hydrophilic sulfonate oligomer diol, 5-15 parts of hydrophilic diol, 2-15 parts of small-molecular diol, 20-40 parts of a diluting agent, 80-150 parts of diisocyanate, 1-6 parts of a salt forming agent, 20-30 parts of diamine chain extender D and 400-600 parts of deionized water; the resin B is prepared from the following raw materials in parts by weight: 120-200 parts of polyester polyol N, 5-30 parts of hydrophilic sulfonate oligomer diol, 5-15 parts of hydrophilic diol, 20-40 parts of a diluting agent, 60-120 parts of diisocyanate, 1-6 parts of a salt-forming agent, 10-20 parts of diamine chain extender and 400-600 parts of deionized water; and the weight ratio ofthe resin A to the resin B is 2:8-8:2, and the mixed resin has a good extinction effect in the proportional range.

Description

technical field [0001] The invention relates to the field of water-based polyurethane resin, in particular to a self-dulling water-based polyurethane resin and a preparation method thereof. technical background [0002] The surface of many industrial products requires a black surface or matting effect. In order to achieve the matting effect, a layer of matting coating material is usually coated on the surface of the product. Because water-based polyurethane resin has the advantages of water-based environmental protection, friction resistance, good adhesion, and adjustable hardness of the coating film, it is often used as a resin material in various water-based matting coatings. There are generally two ways to realize the matting of water-based polyurethane coatings: one is to achieve matting by adding matting powder, and the other is to use resin to matt itself. In the first method, patent document CN103725178A discloses a polyurethane matting varnish, in which silicone ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/12C08G18/32C08G18/34C08G18/42C09D175/06
CPCC08G18/12C08G18/3206C08G18/348C08G18/4202C08G18/4238C08G18/4277C08G18/6692C09D175/06C08G18/3234C08G18/3228
Inventor 李延科
Owner LUOYANG SHENGJIA CHEM CO LTD