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Water-based alkyd acrylic hybrid resin and preparation method thereof

An alkyd acrylic and hybrid resin technology, applied in the direction of coating, can solve the problems of low performance such as water resistance, and achieve the effect of improving hardness and improving heat storage capacity

Pending Publication Date: 2021-06-25
江苏富琪森新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a water-based alkyd-acrylic hybrid resin and its preparation method, to solve the problem of low water resistance and other properties of the existing chemically modified water-based alkyd resin when used in the preparation of water-based coatings

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  • Water-based alkyd acrylic hybrid resin and preparation method thereof
  • Water-based alkyd acrylic hybrid resin and preparation method thereof
  • Water-based alkyd acrylic hybrid resin and preparation method thereof

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Embodiment 1

[0040] The invention provides a kind of preparation method of waterborne alkyd acrylic hybrid resin, comprises the following steps:

[0041] (1) Preparation of basic alkyd resin, its raw material composition and proportioning ratio are shown in Table 1.

[0042] The preparation method is as follows: add raw materials into a clean reaction kettle, raise the temperature to 180° C. under a nitrogen atmosphere, keep the temperature constant for 1 hour, and collect the condensed water azeotroped with xylene at the same time. Continue to raise the temperature to 225°C, keep the temperature constant until the raw material becomes transparent and clear, then continue to raise the temperature to 245°C until the acid value of the alkyd resin is reduced to less than 10mgKOH / g, then cool down, dilute and discharge to obtain the basic alkyd resin.

[0043] Table 1 Raw material composition and ratio of basic alkyd resin

[0044]

[0045] (2) Preparation of fatty acid modified acrylic ac...

Embodiment 2

[0055] The invention provides a kind of preparation method of waterborne alkyd acrylic hybrid resin, comprises the following steps:

[0056] (1) preparation of basic alkyd resin, its preparation method is the same as embodiment 1.

[0057] (2) Preparation of fatty acid modified acrylic acid prepolymer, its raw material composition and proportioning ratio are shown in Table 4.

[0058] The preparation method is as follows: xylene with a total mass of each raw material of 18wt% is used as a solvent at the bottom of the tank, after the raw materials are uniformly mixed, the mixture is added dropwise into the reaction kettle at 140° C., and the dropping time is 6 hours. After the dropwise addition, react at a constant temperature of 140° C. for 2 hours, cool down and discharge to obtain a fatty acid-modified acrylic acid prepolymer.

[0059] Table 4 Raw material composition and proportioning of fatty acid modified acrylic acid prepolymer

[0060]

[0061]

[0062] (3) Prep...

Embodiment 3

[0067] The invention provides a kind of preparation method of waterborne alkyd acrylic hybrid resin, comprises the following steps:

[0068] (1) Preparation of basic alkyd resin, its raw material composition and proportioning ratio are shown in Table 6.

[0069] The preparation method is as follows: add raw materials into a clean reaction kettle, raise the temperature to 180° C. under a nitrogen atmosphere, keep the temperature constant for 1 hour, and collect the condensed water azeotroped with xylene at the same time. Continue to raise the temperature to 225°C, keep the temperature constant until the raw material becomes transparent and clear, then continue to raise the temperature to 245°C until the acid value of the alkyd resin is reduced to less than 10mgKOH / g, then cool down, dilute and discharge to obtain the basic alkyd resin polymer.

[0070] Table 6 Raw material composition and ratio of basic alkyd resin

[0071]

[0072]

[0073] (2) Preparation of fatty acid...

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Abstract

The invention belongs to the technical field of high-performance environment-friendly coatings, and discloses water-based alkyd acrylic hybrid resin and a preparation method thereof.The hybrid resin is prepared from fatty acid modified acrylic prepolymer, basic alkyd resin, a solvent, a neutralizer and water. The preparation method comprises the following steps: carrying out local polycondensation on the fatty acid modified acrylic prepolymer and the basic alkyd resin, and neutralizing and dispersing. A coating prepared from the water-based alkyd acrylic hybrid resin has excellent water resistance, dryness, hardness, heat storage capacity and the like, water-based paint prepared from the resin combines excellent wettability and pigment and filler bearing capacity of alkyd resin and acrylic acid, and the gloss can reach 85-90; The coating is suitable for the large-scale civil paint field and the industrial paint field.

Description

technical field [0001] The invention relates to the technical field of high-performance environmental protection coatings, in particular to a water-based alkyd-acrylic hybrid resin and a preparation method thereof. Background technique [0002] With the development of industry, the problem of environmental pollution is more and more troubled by human beings, so the development of environmentally friendly coatings is a major trend. The fundamental way to solve the problem of environmental pollution by coatings is to develop solvent-free coatings, water-based coatings, powder coatings and high-solid coatings. With the enhancement of people's awareness of environmental protection and the increasingly stringent environmental protection regulations, water-based coatings have become one of the main development directions of environmentally friendly coatings. Water-based coatings have reduced environmental pollution because all or most of them have replaced organic solvents with wa...

Claims

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Application Information

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IPC IPC(8): C08G81/02C09D187/00
CPCC08G81/027C09D187/005
Inventor 申亮丁永波邓煜东
Owner 江苏富琪森新材料有限公司
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