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Water-based acrylic acid modified alkyd hybrid resin as well as preparation method, coating and application of water-based acrylic acid modified alkyd hybrid resin

A water-based acrylic, modified technology, applied in the direction of coating, etc., can solve the problems of hardness and impact resistance, and achieve the effects of good impact resistance, high hydrolysis resistance, and high hardness

Pending Publication Date: 2022-05-17
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 method for preparing a water-based acrylic modified alkyd hybrid resin, so as to solve the technical problem that the alkyd resin in the prior art cannot take into account hardness and impact resistance when preparing amino baking varnish

Method used

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  • Water-based acrylic acid modified alkyd hybrid resin as well as preparation method, coating and application of water-based acrylic acid modified alkyd hybrid resin
  • Water-based acrylic acid modified alkyd hybrid resin as well as preparation method, coating and application of water-based acrylic acid modified alkyd hybrid resin
  • Water-based acrylic acid modified alkyd hybrid resin as well as preparation method, coating and application of water-based acrylic acid modified alkyd hybrid resin

Examples

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preparation example Construction

[0046] The preparation method of waterborne acrylic acid modified alkyd hybrid resin comprises the steps:

[0047](a) Vegetable oil fatty acids, polyols, polyacids, unit acids, catalysts and antioxidants are refluxed in xylene at 145-155°C for 0.4-0.6h; h, and remove water; then heat up to 220-230°C, keep warm for esterification until the acid value of the system is less than 10mgKOH / g, remove xylene, and cool down to obtain alkyd resin;

[0048] (b) After raising the temperature of the mixture of alkyd resin and co-solvent to 110-150°C, add the mixture of initiator, chain transfer agent and monomer to carry out copolymerization reaction for 2.5-3.5 hours; and diluting with water to obtain a water-based acrylic modified alkyd hybrid resin with a solid content of 35% to 45%;

[0049] Wherein, in step (a), the consumption of each component by weight parts is as follows respectively:

[0050] 40-60 parts of vegetable oil fatty acid, 20-45 parts of polyol, 18-30 parts of polyaci...

Embodiment 1

[0100] This embodiment provides water-based acrylic acid modified alkyd hybrid resin and preparation method thereof, and the preparation method comprises the following steps:

[0101] (1) Vegetable oil fatty acids, polyols, polyacids, unit acids, catalysts and antioxidants are mixed in xylene, heated to 150°C and kept at reflux for 0.5h, without draining; then heated to 180°C for 0.5h, and kept warm for esterification 1h, and drain; heat up to 225°C at 10°C / h, keep warm for esterification until the acid value of the system is less than 10mgKOH / g, vacuum remove xylene, cool down to obtain alkyd resin.

[0102] (2) Take a certain amount of alkyd resin obtained in step (1), mix it with a co-solvent and heat it up to 130°C, start to drop the mixture of initiator, chain transfer agent and monomer to carry out the copolymerization reaction, and keep it warm for 3 hours after the addition is completed Then cool down, add a neutralizer to neutralize, and then add water to dilute to obta...

Embodiment 2

[0110] This example provides a water-based acrylic acid modified alkyd hybrid resin and its preparation method, referring to example 1, the only difference is that the formula of step (2) is different. The raw material information of the step (2) of the present embodiment is shown in Table 3.

[0111] Table 3 step (2) raw material information

[0112]

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Abstract

The invention relates to the technical field of environment-friendly coatings, in particular to a water-based acrylic acid modified alkyd hybrid resin, a preparation method thereof, a coating and application. The preparation method of the water-based acrylic acid modified alkyd hybrid resin comprises the following steps: preparing alkyd resin, and carrying out copolymerization reaction on the alkyd resin, monomers and the like; neutralizing with a neutralizer, and diluting with water to obtain the water-based acrylic acid modified alkyd hybrid resin with certain solid content; the monomer comprises an acrylic monomer and meets the following conditions: (i) the content of hydroxyl in the acrylic monomer accounts for less than or equal to 1% of the mass of the acrylic monomer; (ii) the monomer further comprises acetoacetoxyethyl methacrylate and / or diacetone acrylamide. After adipic acid dihydrazide or blocked isocyanate is added into the water-based acrylic acid modified alkyd hybrid resin to prepare amino baking paint, a paint film can reach relatively high hardness and impact resistance, and the contradiction that the hardness and the impact resistance of the paint film of the amino baking paint cannot be considered at the same time can be solved.

Description

technical field [0001] The invention relates to the technical field of environmental protection coatings, in particular to a water-based acrylic modified alkyd hybrid resin, a preparation method thereof, coatings and applications thereof. Background technique [0002] With the development of industry and the progress of society, the problem of environmental pollution has attracted more and more attention. Therefore, environmental protection coatings are an important development direction in the field of coatings, and water-based coatings are one of the main development directions of environmental protection coatings. Since all or most of the water-based paint replaces the organic solvent with water, the pollution to the environment is reduced. [0003] However, the performance of water-based resins prepared with a single structure is far inferior to that of solvent-based resins. Therefore, in the prior art, two or more resins with different structures are organically combine...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08F220/14C08F232/08C08F220/06C08F220/28C08F220/18C08F220/58C09D151/08C09D161/20C09D7/65
CPCC08F283/01C09D151/08C09D7/65C08F220/14C08F232/08C08F220/06C08F220/283C08F220/1811C08F220/1804C08F220/58C08L61/20
Inventor 邓煜东闫磊
Owner 江苏富琪森新材料有限公司
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