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Photocureable coating containing hyperbranched polyester ether type photocureable resin and preparation method of photocureable coating

A technology of hyperbranched polyester and light-curing coatings, applied in epoxy resin coatings, coatings, etc., can solve problems such as low shrinkage adhesion, achieve excellent acid and alkali resistance, high reactivity, excellent rigidity and mechanics performance effect

Active Publication Date: 2020-11-13
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the deficiencies in the existing UV-curable coatings, and provide a hyperbranched polyester ether UV-curable coating with low shrinkage, high adhesion, high hardness, and excellent acid and alkali resistance and its Preparation

Method used

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  • Photocureable coating containing hyperbranched polyester ether type photocureable resin and preparation method of photocureable coating
  • Photocureable coating containing hyperbranched polyester ether type photocureable resin and preparation method of photocureable coating
  • Photocureable coating containing hyperbranched polyester ether type photocureable resin and preparation method of photocureable coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A hyperbranched polyester ether type light-curable resin, and its preparation method includes the following steps:

[0027] Combine 3,5-dihydroxybenzoic acid (10.00g, 64.9mmol), 1,4-dibromobutane (14.006g, 64.9mmol), potassium carbonate (21.56g, 155.75mmol) and N,N'-dimethyl Methyl formamide (120 mL) was added to the reactor, the reaction system was heated to 80°C, and reacted for 24 hours under mechanical stirring.

[0028] Then the temperature of the reaction system was lowered to 30°C, cesium carbonate (25.37g, 77.85mmol), 4-chloromethylstyrene (9.905g, 64.9mmol) and N,N'-dimethylformamide (20mL) were added, Continue to react at 40°C for 24h. After centrifugal desalting, rotary evaporation and concentration, deionized water precipitation and freeze-drying, the hyperbranched polyester ether type light curing resin HBPEE1 is obtained.

[0029] The infrared absorption spectrum of the hyperbranched polyester ether type photocurable resin HBPEE1 obtained in Example 1 is as fol...

Embodiment 2

[0031] A hyperbranched polyester ether type light-curing resin, and its preparation method includes the following steps:

[0032] Combine 3,5-dihydroxybenzoic acid (20.00g, 129.8mmol), 1,4-dibromobutane (28.02g, 129.8mmol), potassium carbonate (43.10g, 311.5mmol) and N,N'-dimethyl Methyl formamide (240 mL) was added to the reactor, and the reaction system was heated to 80° C. and reacted for 24 hours under mechanical stirring. Then the temperature of the reaction system was lowered to 40°C, cesium carbonate (50.74g, 155.7mmol), 4-chloromethylstyrene (1.981g, 12.98mmol), benzyl bromide (19.995g, 116.82mmol) and N,N′ were added. -Dimethylformamide (40mL), continue to react at 40°C for 24h. After centrifugal desalting, rotary evaporation and concentration, deionized water precipitation, freeze-drying, the hyperbranched polyester ether type light curing resin HBPEE2 is obtained.

[0033] The infrared absorption spectrum of the hyperbranched polyester ether type photocurable resin HBP...

Embodiment 3

[0035] A photocurable coating containing a hyperbranched polyester ether type photocurable resin, the preparation method of the photocurable coating is:

[0036] Stir 0.5 parts of hyperbranched polyester ether type photocurable resin obtained in Example 1, 70 parts of epoxy soybean oil acrylate and 30 parts of reactive diluent TPGDA into a homogeneous phase at room temperature, and then add 3 parts of photoinitiator 1173 , 0.5 part defoamer, 0.5 part leveling agent, keep stirring for 10 minutes at a speed of 2000r / min in the dark to obtain a photocurable coating containing hyperbranched polyester ether type photocurable resin.

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Abstract

The invention discloses a photocureable coating containing hyperbranched polyester ether type photocureable resin and a preparation method of the photocureable coating, and belongs to the technical field of coatings. The photocureable coating is prepared from the following components in parts by weight: 60 to 80 parts of acrylic resin, 20 to 40 parts of reactive diluent, 1 to 5 parts of photoinitiator, 0.1 to 5 parts of hyperbranched polyester ether type photocureable resin and 0.1 to 0.5 part of auxiliary agent. The hyperbranched polyester ether type light-cured resin is prepared from a bifunctional alkyl halide monomer, a trifunctional hydroxyl / carboxyl benzene monomer and chloromethyl styrene or benzyl bromide or benzyl chloride through a one-pot method. The coating film of the photocureable coating is excellent in overall performance, the internal stress and the shrinkage rate of the coating can be reduced, the adhesive force between the coating and a base material can be improved,meanwhile, the hardness and the mechanical strength of the coating can be improved, raw materials are cheap and easy to obtain, and industrialization is easy.

Description

Technical field [0001] The invention belongs to the technical field of photocurable coatings, and in particular relates to a photocurable coating containing hyperbranched polyester ether type photocurable resin and a preparation method thereof. Background technique [0002] UV light curing technology has the "5E" advantages of high efficiency, environmental protection, energy saving, economy, and wide applicability. In the past 20 years, UV light curing systems have been developed rapidly and have been widely used in coatings, adhesives, inks, etc. field. At present, traditional light-curing coating systems have many problems. For example, there will be stress concentration in the light-curing process, which will cause internal stress and cracks in the material, increase the shrinkage of the coating system, and increase coating defects. The problem of decreased adhesion of the substrate. These problems tend to greatly reduce the protection and stability of the material. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/65C08G63/664C08G63/78
CPCC08G63/664C08G63/78C09D163/10C09D7/65C08L67/00
Inventor 李小杰钱佳怡刘仁魏玮罗静刘敬成
Owner JIANGNAN UNIV
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