Aqueous bi-component acrylic acid-polyurethane resin and preparation method thereof

A polyurethane resin and acrylic technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as system failure, formation of bubbles or pinholes, and performance impact

Active Publication Date: 2014-02-05
BEIJING JINHWEILI APPLIED CHEM PROD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the water-based two-component polyurethane system has many advantages, because the curing agent used contains isocyanate groups, some defects are also obvious, which also seriously limit its application, such as: short pot life, mixed isocyanate and Hydroxyl and water will also react at room temperature, which will make the system invalid, lose the crosslinking ability of the coating film, and af...

Method used

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  • Aqueous bi-component acrylic acid-polyurethane resin and preparation method thereof
  • Aqueous bi-component acrylic acid-polyurethane resin and preparation method thereof
  • Aqueous bi-component acrylic acid-polyurethane resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In Example 1, the water-based two-component acrylic-polyurethane resin is prepared by mixing A composition and B composition;

[0023] The A composition consists of the following components:

[0024] Butanol

50g；

Monoethanolamine

61g；

Quinol

0.05g；

Glycidyl methacrylate

140g；

Methyl methacrylate

65g；

Butyl acrylate

65g；

Hydroxyethyl Acrylate

10g；

[0025] Azobisisobutyronitrile

6g；

Ethylene glycol monobutyl ether

80g；

Molecular weight regulator (tert-dodecyl mercaptan)

4g；

dimethylformamide

24g；

Acid neutralizer (formic acid)

13.6g；

water

600g；

[0026] The B composition consists of the following components:

[0027] butanone

40g；

Propylene glycol methyl ether acetate

10g；

n-Butylamine

22.8g；

Glycidyl Hexahydrophthalate

200g；

IPDI

34.6g；

Ethyle...

Embodiment 2

[0034] In embodiment 2, water-based two-component acrylic-urethane resin is prepared by mixing A composition and B composition;

[0035] The A composition consists of the following components:

[0036]

[0037]

[0038] The B composition consists of the following components:

[0039]

[0040] The preparation process of waterborne two-component acrylic acid-polyurethane resin is:

[0041] Preparation of component A: Add 15g of propylene glycol methyl ether, n-butanol, glycidyl methacrylate and p-hydroxyanisole into a 500ml reactor, heat to 50°C, add monoethanolamine dropwise, and finish dropping in 1 to 2 hours. Keep warm at 50°C for 2 hours; heat up to 70°C, keep warm for 3 hours, and discharge. Take out 82.8g and methyl methacrylate, butyl acrylate, laurate acrylate, hydroxyethyl acrylate, molecular weight modifier, azobisisobutyronitrile, dimethylformamide to prepare a mixed solution; react in another 1000ml Add 80g of propylene glycol methyl ether into the conta...

Embodiment 3

[0046] In embodiment 3, water-based two-component acrylic acid-urethane resin is prepared by mixing A composition and B composition;

[0047] The A composition consists of the following components:

[0048]

[0049] The B composition consists of the following components:

[0050] butanone

40g；

Propylene glycol methyl ether acetate

8g；

n-Butylamine

22.8g；

Glycidyl Tetrahydrophthalate

200g；

HDI

26.2g；

Ethylene glycol

15g；

Acid neutralizer (lactic acid)

14.4g；

water

10g；

[0051] The preparation process of waterborne two-component acrylic acid-polyurethane resin is:

[0052] Preparation of component A: Add 50g of ethylene glycol monobutyl ether, glycidyl methacrylate and hydroquinone into a 500ml reactor, heat to 50°C, add monoethanolamine dropwise, drop it in 1 to 2 hours, and finish at 50°C Keep warm for 2 hours; heat up to 70°C, keep warm for 3 hours, and discharge. Take out 7...

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PUM

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Abstract

The invention relates to an aqueous bi-component acrylic acid-polyurethane resin and a preparation method thereof. The aqueous bi-component acrylic acid-polyurethane resin comprises a component A and a component B, wherein the component A comprises n-butyl alcohol, monoethanolamine and/or n-butyl amine, hydroquinone and/or p-hydroxyanisole, glycidyl methacrylate, methyl methacrylate and/or isobornyl methacrylate, butyl acrylate and/or butyl methacrylate and/or acrylic acid laurate, hydroxyethyl acrylate, azodiisobutyronitrile, butylcellosolve and/or propylene glycol monomethyl ether, a molecular weight regulator, dimethylformamide, an acid neutralizer and water; the component B comprises butanone and/or ethyl acetate, propylene glycol methyl ether acetate, monoethanolamine and/or n-butylamine, cis-hexahydrophthalic acid glycidyl ester and/or tetrahydrophthalic acid glycidyl ester, IPDI (Isophorone Diisocyanate) and/or HDI (Hexamethylene Diisocyanate), ethylene glycol monobutyl ether and/or ethylene glycol, the acid neutralizer and the water; and the weight ratio of the component A to the component B is (4-7):1. A coating prepared from the aqueous bi-component acrylic acid-polyurethane resin is more than 150 microns in thickness and cannot generate bubbles or pinholes.

Description

technical field [0001] The invention relates to a water-based two-component acrylic-polyurethane resin, which can be cured at normal temperature. The invention also relates to a method for preparing the resin. Background technique [0002] The two-component polyurethane system has excellent mechanical properties (high film hardness, strong adhesion, high wear resistance, etc.), good chemical resistance, weather resistance and low-temperature film-forming properties, and is widely used in industrial protection, wood furniture and Automobile painting and so on. With the improvement of environmental protection regulations in various countries and the enhancement of people's awareness of environmental protection, the emission of volatile organic compounds (VOC) in traditional solvent-based two-component polyurethane is subject to more and more strict restrictions. The water-based two-component polyurethane coating is a product that combines the high-performance coating of solv...

Claims

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Application Information

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IPC IPC(8): C08G18/65C08G18/62C08F220/32C08F220/14C08F220/18C08F220/28C09D175/04
CPCC08G18/6237C08G18/65C09D175/04C08F220/325C08F220/14C08F220/1804C08F220/1818C08F220/281C08F216/1433C08F220/1812C08F216/1441C08F220/1811C08F220/20C08F220/18C09D133/10
Inventor 马成龙秦文王英
Owner BEIJING JINHWEILI APPLIED CHEM PROD
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