A kind of water-based epoxy ester modified acrylate emulsion for woodware and its preparation method

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 effect of reducing VOC, reducing viscosity, and preventing yellowing

Active Publication Date: 2021-12-17
广东拾之易新材料有限公司
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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 preparation method for water-based epoxy ester modified acrylate emulsion on woodware, comprising the following steps:

[0060] (1) Preparation of waterborne epoxy ester dispersion

[0061] Add E-20 epoxy resin, ricinoleic acid and stearic acid into the reactor and heat to form a homogeneous phase, add 1% lithium neodecanoate accounting for the total amount of reactants in the previous step, and react at 180°C until the acid value When it is less than 1mgKOH / g, add butyl acrylate accounting for 20% of the total amount of reactants in the previous step, adjust the temperature to 120°C, add succinic anhydride, react for 2h, cool down to 60-65°C, and add to triethylamine and 30min, add water to disperse for 2h, and adjust the solid content to 40% to obtain a water-based epoxy ester dispersion;

[0062] The total molar ratio of E-20 to ricinoleic acid and stearic acid is 1:2, the molar ratio of ricinoleic acid to stearic acid is 1:3, the molar ratio of E-20 to succinic a...

Embodiment 2

[0068] A preparation method for water-based epoxy ester modified acrylate emulsion on woodware, comprising the following steps:

[0069] (1) Preparation of water-based epoxy ester dispersion

[0070] Add E-44 epoxy resin, 2-hydroxypropionic acid and stearic acid into the reactor and heat to form a homogeneous phase, add 0.8% of tetrabutylammonium bromide accounting for the total amount of reactants in the previous step, at 100 ° C React until the acid value is less than 1mgKOH / g, add butyl acrylate accounting for 10% of the total amount of reactants in the previous step, adjust the temperature to 80°C, add maleic anhydride, react for 2 hours, cool down to 60-65°C, add N,N-Dimethylethanolamine reacted for 30 minutes, added water to disperse for 2 hours, and adjusted the solid content to 40% to obtain a water-based epoxy ester dispersion;

[0071] The total molar ratio of E-44 to 2-hydroxypropionic acid and stearic acid is 1:2; the molar ratio of stearic acid to 2-hydroxypropio...

Embodiment 3

[0077] A preparation method for water-based epoxy ester modified acrylate emulsion on woodware, comprising the following steps:

[0078] (1) Preparation of water-based epoxy ester dispersion

[0079] Add E-44 epoxy resin, ricinoleic acid and abietic acid into the reactor and heat to form a homogeneous phase, add 0.8% lithium neodecanoate accounting for the total amount of reactants in the previous step, and react at 180°C until the acid value is less than 1mgKOH / g, add butyl acrylate accounting for 12% of the total amount of reactants in the previous step, adjust the temperature to 120°C, add succinic anhydride, react for 2h, cool down to 60-65°C, add triethylamine to react for 30min, add water to disperse 2h, adjust the solid content to 35% to obtain the aqueous epoxy ester dispersion;

[0080] The molar ratio of E-44 to ricinoleic acid and abietic acid is 1:2; the molar ratio of abietic acid to ricinoleic acid is 1:1, the molar ratio of E-44 to succinic anhydride is 1:1, tr...

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PUM

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Abstract

The invention discloses a water-based epoxy ester modified acrylate emulsion for woodware and a preparation method thereof, comprising the following steps: (1) preparation of a water-based epoxy ester dispersion; (2) water-based epoxy ester dispersion and acrylic acid Copolymerization of ester monomers. The water-based epoxy ester modified acrylate emulsion contains both epoxy ester components and acrylate components in the resin. The epoxy ester endows the paint film with excellent water resistance and can prevent the water in the topcoat from penetrating into the wood to cause damage. At the same time, it can also prevent the yellowing caused by the leakage of wood oil ester and tannic acid; the acrylic acid ester can improve the drying speed and sanding property of the paint film. The water-based epoxy ester modified acrylate emulsion has the characteristics of fast drying. When used as a wood sealer, it has the advantages of quick drying, easy polishing, anti-swelling, anti-tannic acid, etc., and provides excellent sealing effect.

Description

technical field [0001] The invention relates to the field of water-based wood ware paint, and mainly relates to a water-based epoxy ester modified acrylate emulsion used on wood ware and a preparation method. Background technique [0002] As people's awareness of environmental protection continues to increase and environmental protection laws and regulations become increasingly stringent, traditional oil-based wood coatings are gradually replaced by environmentally friendly and healthy water-based coatings because they contain a large amount of organic volatiles and harmful substances. However, the following problems still exist in the application of water-based paints on wood, such as slow drying, easy tendon expansion, difficult sanding, easy yellowing, etc., which limit the wide use of water-based wood paints. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] In view of the above-mentioned deficiencies in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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 广东拾之易新材料有限公司
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