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Waterborne epoxy ester modified acrylate emulsion for woodware and preparation method thereof

A technology of acrylate and epoxy ester, applied in the direction of coating, etc., can solve the problem of slow drying of water-based wood paint, achieve the effects of reducing VOC, improving drying speed and sandability, and reducing viscosity

Active Publication Date: 2021-06-01
海顺易漆富新材料(佛山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a water-based epoxy ester modified acrylate emulsion and a preparation method for wood, aiming to solve the problem of slow drying of existing water-based wood paints

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059]A method for preparing an aqueous epoxide modified acrylate emulsion on a wood, including the following steps:

[0060](1) Preparation of aqueous epoxy dispersion

[0061]The E-20 epoxy resin, ricin hydrolic acid is added to the reactor in the reactor, and 1% lithium of an oxidate comprising the total amount of reactants in the previous step, reacts at 180 ° C to the acid value. When less than 1 mgKOH / g, 20% acrylate in the total amount of reactants were added, and the temperature of 120 ° C was adjusted, and succinic anhydride was added, 2 h, and the reaction was 50 to 65 ° C, and triethylamine was added. And 30 min, add water to 2 hours, adjust the solid content to 40% to obtain aqueous epoxy dispersion;

[0062]The total molar ratio of E-20 and ricinoleic acid and stearate is 1: 2, the molar ratio of castor oil acid and stearic acid is 1: 3, and the molar ratio of E-20 and succinic anhydride is 1: 1.5, three The molar ratio of ethylamine and succinic anhydride is 1.1: 1.

[0063](2) ...

Embodiment 2

[0068]A method for preparing an aqueous epoxide modified acrylate emulsion on a wood, including the following steps:

[0069](1) Preparation of aqueous epoxy dispersion

[0070]The E-44 epoxy resin, 2-hydroxypropionic acid is heated in the reactor in the reactor, and the total amount of tetrabutylammonium bromide in the total amount of reactants in the previous step is added, and at 100 ° C. The reaction is less than 1 mgKOH / g, which is added to 10% acrylate, which is added to the total amount of reactants, adjusts the temperature to 80 ° C, add maleic anhydride, reaction 2H, cooling between 60 ~ 65 ° C, add N, N-dimethyde methanolamine reaction for 30 min, dispersion of water, and adjust the solid content to 40% to obtain aqueous epoxy ester dispersion;

[0071]The total molar ratio of E-44 and 2-hydroxypropionic acid and stearic acid is 1: 2; the molar ratio of stearic acid and 2-hydroxypropionic acid and the molar ratio of E-44 and maleic anhydride It was 1: 1, N, N-dimethyl ethanolamin...

Embodiment 3

[0077]A method for preparing an aqueous epoxide modified acrylate emulsion on a wood, including the following steps:

[0078](1) Preparation of aqueous epoxy dispersion

[0079]The E-44 epoxy resin, ricin hydrolic acid was added to the reactor in the reactor, and 0.8% lithium lithium having a total of 0.8% of the total reactants were added, and the reaction was reacted at 180 ° C to less than the acid value. 1 mgkoh / g, add 12% acrylate having a total of total reactants, adjust the temperature to 120 ° C, add succinic anhydride, reaction 2H, cool down to 60 ~ 65 ° C, add triethylamine reaction for 30 min, add water dispersion 2H, adjust the solid content to 35% to obtain aqueous epoxy dispersion;

[0080]The molar ratio of E-44 and ricic acid and rosin is 1: 2; the molar ratio of rosumic acid and castor oil is 1: 1, and the molar ratio of E-44 and succinic anhydride is 1: 1, triethylamine and Molar ratio of succinic anhydride 1: 1.

[0081](2) Water-based epoxy dispersion and acrylate monomer

[...

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Abstract

The invention discloses a waterborne epoxy ester modified acrylate emulsion for woodware and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a waterborne epoxy ester dispersion; and (2) copolymerizing the waterborne epoxy ester dispersion and an acrylate monomer. According to the waterborne epoxy ester modified acrylate emulsion, resin contains epoxy ester components and acrylate components, epoxy ester endows a paint film with excellent water resistance, rib expansion caused by water in finish paint permeating into wood can be prevented, and meanwhile yellowing caused by seepage of wood grease and tannic acid can be prevented; and acrylate improves the drying speed and the polishing property of the paint film. The waterborne epoxy ester modified acrylate emulsion has the characteristic of quick drying, has the advantages of quick drying, easiness in polishing, rib expansion resistance, tannic acid resistance and the like when being used for a woodware sealing agent, and provides an excellent sealing effect.

Description

Technical field[0001]The present invention relates to the field of aqueous wood lacquer, mainly involving a water-based epoxy ester modified acrylate emulsion and preparation method for wood.Background technique[0002]As people's environmental awareness is continuously improved and the environmental laws and regulations are becoming more strict, traditional oily wood coating is gradually replaced by a large amount of organic volatiles and harmful substances that are gradually healthily and healthy waterborne coatings. However, the waterborne coating is still in the wood appliances, such as slow dry, easy to bind, difficult to grinding, and yellowing, etc., limiting the wide use of water-based wood paint.[0003]Therefore, the prior art still needs to be improved and developed.Inventive content[0004]In view of the shortcomings of the above prior art, it is an object of the present invention to provide an aqueous epoxy-modified acrylate emulsion and preparation method for the wood, aimed...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D7/20C08F283/10C08F220/14C08F212/08C08F220/18
CPCC09D151/08C09D7/20C08F283/105C08F220/14C08F212/08C08F220/1804
Inventor 易承志程蕾陈国华
Owner 海顺易漆富新材料(佛山)有限公司
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