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Water-based polyurethane modified acrylic ester emulsion and preparation method thereof, and water-based wood coating

A technology of water-based polyurethane and acrylate, which is applied in the field of polymers, can solve the problems of low factory work efficiency, workshop space utilization, wood products that cannot be stacked and stacked, and affect the performance of water-based paints, so as to improve anti-adhesion performance and good film formation Sex, the effect of increasing hardness

Active Publication Date: 2018-01-19
GUANGZHOU GUANZHI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the water-based wood coating products on the market cannot be dried quickly after painting, which affects the performance of water-based paint construction and application, and if the painted wood products are stacked in a short period of time, sticking problems often occur As a result, wood products painted with water-based wood coatings cannot be stacked in a short period of time, resulting in low factory work efficiency and factory space utilization. This has always been one of the main factors restricting the development and promotion of water-based wood coatings.

Method used

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  • Water-based polyurethane modified acrylic ester emulsion and preparation method thereof, and water-based wood coating
  • Water-based polyurethane modified acrylic ester emulsion and preparation method thereof, and water-based wood coating
  • Water-based polyurethane modified acrylic ester emulsion and preparation method thereof, and water-based wood coating

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Experimental program
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Effect test

Embodiment 1

[0055] The preparation of embodiment 1 waterborne polyurethane modified acrylate emulsion

[0056] (1) dehydrating the polytetrahydrofuran ether diol at a temperature of 120°C and a vacuum of 0.08Mpa, the dehydration time is 1 hour, and the temperature is lowered to obtain the dehydrated polytetrahydrofuran ether diol for later use;

[0057] (2) Add dehydrated polytetrahydrofuran ether glycol 100g, isophorone diisocyanate 100g, 1,4-butanediol 7g, trimethylolpropane 2g and dimethylol propionic acid 17g in the reactor, After reacting at 80°C for 4 hours, cool down to 70°C, add 9g of hydroxyethyl acrylate, react for 2 hours and cool down to 50°C, then add 11g of triethylamine for neutralization, add 600g of water after neutralization for emulsification, emulsify for 20 Minutes later, add ethylenediamine 3g to carry out chain extension to obtain aqueous polyurethane emulsion;

[0058] (3) Add 100 g of methyl methacrylate, 30 g of butyl acrylate and 8 g of diacetone acrylamide to ...

Embodiment 2

[0059] The preparation of embodiment 2 waterborne polyurethane modified acrylate emulsion

[0060] (1) Dehydrating the polycarbonate diol at a temperature of 100° C. and a vacuum of 0.07 Mpa, the dehydration time is 2 hours, and cooling down to obtain the dehydrated polycarbonate diol for subsequent use;

[0061] (2) Add 50 g of dehydrated polycarbonate diol, 50 g of polytetrahydrofuran ether diol, 80 g of isophorone diisocyanate, 5 g of 1,4-butanediol, 2 g of trimethylol propane and di 15g of methylolpropionic acid, react at 80°C for 4 hours, then cool down to 70°C, then add 8g of hydroxyethyl acrylate, react for 2 hours, then cool down to 50°C, then add 10g of triethylamine for neutralization, after neutralization Add 600g of water for emulsification, add 3g of ethylenediamine after emulsification for 20 minutes for chain extension, and obtain water-based polyurethane emulsion;

[0062] (3) Add 120g of methyl methacrylate, 40g of butyl acrylate and 10g of diacetone acrylami...

Embodiment 3

[0063] The preparation of embodiment 3 waterborne polyurethane modified acrylate emulsion

[0064] (1) Dehydrating the polytetrahydrofuran ether diol at a temperature of 120°C and a vacuum of 0.09Mpa, the dehydration time is 1 hour, and the temperature is lowered to obtain the dehydrated polytetrahydrofuran ether diol for later use;

[0065] (2) Add dehydrated polytetrahydrofuran ether glycol 100g, isophorone diisocyanate 80g, 1,4-butanediol 5g, trimethylolpropane 2g and dimethylol propionic acid 15g in the reactor, After reacting at 80°C for 4 hours, cool down to 70°C, then add 8g of hydroxyethyl acrylate, react for 2 hours and cool down to 50°C, then add 10g of triethylamine for neutralization, add 600g of water after neutralization for emulsification, and emulsify for 20 Minutes later, add ethylenediamine 3g to carry out chain extension to obtain aqueous polyurethane emulsion;

[0066] (3) Add methyl methacrylate 120g, butyl acrylate 40g and acetoacetoxy ethyl methacrylate...

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Abstract

The invention relates to water-based polyurethane modified acrylic ester emulsion and a preparation method thereof, and water-based wood coating. The water-based polyurethane modified acrylic ester emulsion is prepared from the following raw materials in percentage by weight: 6 to 20 percent of a polyol polymer, 4 to 20 percent of isocyanate, 0.1 to 3 percent of a micromolecular chain extender, 0.5 to 4 percent of a hydrophilic chain extender, 0.1 to 1.5 percent of an after chain extender, 0.5 to 3 percent of a hydroxy acrylic acid monomer, 10 to 30 percent of an acrylic acid monomer, 0.05 to0.5 percent of an initiator, 0.5 to 3 percent of an epoxy organosilicon monomer, 0.1 to 4 percent of an organic crosslinking agent, 0 to 4 percent of a metal crosslinking agent, 0.5 to 2 percent of alkali and the balance of water. The emulsion has high stability; and after the emulsion is prepared into the water-based wood coating and the wood product is coated with the coating, the drying speed is high and the adhesion resistance is excellent.

Description

technical field [0001] The invention relates to the technical field of macromolecules, in particular to a water-based polyurethane modified acrylate emulsion, a preparation method thereof and a water-based wood coating. Background technique [0002] With the increasing awareness of environmental protection, people pay more attention to whether the paint affects the living environment while using the paint. Water-based coatings use water as a solvent or dispersion medium. In addition to the characteristics of general coatings, they also have the characteristics of non-toxic, odorless, and non-flammable. They meet environmental protection requirements and are more and more popular among users. The VOC content, benzene series and heavy metal content in water-based paint are much lower than that of oil-based paint. The brushing area is generally more than twice that of oil-based paint. It is easy to use and can be diluted with tap water. The construction tools and equipment are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D7/61C09D7/63C08F283/00C08F220/14C08F220/18C08G18/75C08G18/67C08G18/66C08G18/48C08G18/32C08G18/34C08G18/44
Inventor 龙志云郑梓敬
Owner GUANGZHOU GUANZHI NEW MATERIAL TECH
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