Water-based UV resin and preparation method thereof

A water-based, resin-based technology, applied in coatings, polyurea/polyurethane coatings, etc., to achieve excellent steel wool scratch resistance and overcome the incompatibility of high hardness and high flexibility

Active Publication Date: 2020-07-14
SHENZHEN FEIYANG JUNYAN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of existing UV resin technology, the applicant provides a water-based UV resin and a synthesis method to solve the contradiction between the hardness and flexibility of traditional cured coatings, making this type of UV resin resistant to 0000# steel wool scratch performance 10,000 times, and the water resistance and adhesion have also been greatly improved

Method used

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  • Water-based UV resin and preparation method thereof
  • Water-based UV resin and preparation method thereof
  • Water-based UV resin and preparation method thereof

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preparation example Construction

[0040] Second aspect of the present invention provides the preparation method of waterborne UV resin as described above, comprises the steps:

[0041] (1) Add metered diisocyanate into the reactor, then drop polyol after dehydration, and react for 1 to 3 hours to obtain product A;

[0042] (2) In another reactor, under the protection of nitrogen, add the raw material ethanolamine, and then add the catalyst to raise the temperature of the system to 60-80°C; The mixture was reacted for 3 to 8 hours to obtain product B;

[0043] (3) Add the product B into the reactor under the protection of nitrogen, raise the temperature of the system to 60-80° C., then add the product A dropwise, react for 1-3 hours, and discharge to obtain the water-based UV resin.

[0044] When the water-based UV resin of the present invention is prepared, the polyol in step (1) needs to be dried and dehydrated before reacting with the diisocyanate, so as to avoid the reaction of moisture therein with the di...

Embodiment 1

[0057] Example 1 Summary of the invention: a kind of water-based UV resin is provided, which has the following structural formula:

[0058]

[0059] where R 1 Has the structure of formula 1, the degree of polymerization is 34; R 2 has the structure of formula 6; R 3 has the following structure: where the R 7 has the following structure: The degree of polymerization m=5.

[0060] The preparation method of above-mentioned waterborne UV resin comprises the steps:

[0061] (1) Toluene diisocyanate (34.8g) was added into the reaction flask, polypropylene glycol 2000 (400g) which had been dehydrated was added dropwise, and the product A was obtained by reacting for 2 hours.

[0062] (2) Add the raw material ethanolamine (12.2g) into the reaction flask, add sodium methoxide (0.6g) and hydroquinone (0.6g) in sequence, raise the temperature to 70°C, and slowly add methoxypolyethylene glycol acrylate dropwise (100g) and trimethylolpropane triacrylate (90g) mixed raw materia...

Embodiment 2

[0064] Example 2 Summary of the invention: a kind of water-based UV resin is provided, which has the following structural formula:

[0065]

[0066] where R 1 Be the polycarbonate (1.6 hexanediol) ester diol structure that number average molecular weight is 2000; R 2 has the structure of Formula 5; R 3 has the following structure: where the R 7 has the following structure: The degree of polymerization m=5.

[0067] The preparation method of above-mentioned waterborne UV resin comprises the steps:

[0068] (1) Toluene diisocyanate (53.5 g) was added in a reaction flask, and polycarbonate (1.6 hexanediol) diol 1000 (307.7 g) was added dropwise, and reacted for 2 hours to obtain product A.

[0069] (2) Add raw material ethanolamine (19g) into the reaction flask, add sodium methoxide (0.6g) and hydroquinone (0.6g) successively, raise the temperature to 70°C, slowly add dropwise methoxypolyethylene glycol acrylate ( 153.8g) and 1.6 hexanediol diacrylate (106g) mixed r...

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Abstract

The invention relates to the technical field of high polymer materials, in particular to water-based UV resin and a preparation method thereof. The preparation method comprises the following steps: (1) adding metered diisocyanate into a reactor, dropwise adding dehydrated polyol, and reacting for 1-3 hours to obtain a product A; (2) in another reactor, under the protection of nitrogen, adding a raw material ethanolamine, then adding a catalyst, and raising the temperature of the system to 60-80 DEG C; dropwise adding a reaction monomer, and reacting for 3-8 hours to obtain a product B; and (3)adding the product B into the reactor under the protection of nitrogen, heating the system to 60-80 DEG C, dropwise adding the product A, reacting for 1-3 hours, and discharging to obtain the water-based UV resin. The obtained water-based UV resin has high solid content and excellent water resistance and solvent resistance, and does not use a low-molecular-weight reactive diluent, so that the contradiction that high hardness and high flexibility of light-cured resin cannot be considered at the same time is overcome, and the water-based UV resin has excellent steel wool scraping resistance.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a water-based UV resin and a preparation method thereof. Background technique [0002] UV resin has been developed rapidly due to its fast curing speed, operation at room temperature, low energy consumption, and excellent performance. Traditional oil-based UV resins generally have high viscosity, and active diluents must be added to adjust the construction viscosity when coating, especially spraying, and sometimes even a small amount of organic solvents are added to improve rheology, and the addition of active diluents will affect the operator. The body is healthy, and there will be some residual monomers that directly affect the performance of the cured film, so water-based UV has been valued and developed. [0003] At present, water-based UV resins at home and abroad are roughly divided into: epoxy acrylate (EA), polyester acrylate (PEA), polyurethane acrylate (PUA),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/67C08G18/48C08G18/44C08G18/42C08G18/32C09D175/16
CPCC08G18/7614C08G18/673C08G18/6795C08G18/4825C08G18/44C08G18/4238C08G18/3271C09D175/16
Inventor 龙绪俭徐涛熊东路肖增钧易松杨轩鲁晓东李斌仁
Owner SHENZHEN FEIYANG JUNYAN TECH DEV
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