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Polyester modified epoxy acrylate resin and preparation method and application thereof

A technology of epoxy acrylate and polyester acrylate, applied in the field of coatings, can solve the problems of insufficient flexibility, high brittleness of cured film, unfavorable anti-aging and anti-yellowing properties, etc., and achieve improved hardness, high hardness and tight structure. Effect

Active Publication Date: 2020-01-14
CARPOLY CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing epoxy acrylate, there are many residual acrylate groups in the film layer after photocuring, which is unfavorable for aging resistance and anti-yellowing performance, and the cured film is high in brittleness and insufficient in flexibility.

Method used

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  • Polyester modified epoxy acrylate resin and preparation method and application thereof
  • Polyester modified epoxy acrylate resin and preparation method and application thereof
  • Polyester modified epoxy acrylate resin and preparation method and application thereof

Examples

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preparation example Construction

[0042] The preparation method of above-mentioned polyester acrylate, comprises the steps:

[0043] Mix the hydroxyethyl acrylate b, phthalic anhydride b and catalyst b, raise the temperature for the first time, and react to obtain a mixture A;

[0044] When the acid value of the system is 210mgKOH / g-218mgKOH / g, add the epichlorohydrin and polymerization inhibitor b to the mixture A, heat up for the second time, and react to obtain the mixture B;

[0045] When the acid value of the system is less than or equal to 5 mgKOH / g, the material is filtered out to obtain the polyester acrylate.

[0046] Preferably, for the first temperature rise, the temperature is 100°C-110°C, and the reaction time is 2h-3h.

[0047] Preferably, for the second temperature rise, the temperature is 110°C-120°C, and the reaction time is 3h-4h.

[0048] The present invention also provides the preparation method of above-mentioned polyester modified epoxy acrylate resin, comprises the steps:

[0049] Mix...

Embodiment 1

[0071] This embodiment provides a polyester modified epoxy acrylate resin, which is prepared from the following components by weight:

[0072] 30 parts of hydroxyethyl acrylate a, 35 parts of phthalic anhydride a, 0.8 parts of catalyst a N,N-dibutylamine, 20 parts of epoxy resin YN1828, 0.2 parts of p-hydroxyanisole of polymerization inhibitor a, tripropylene glycol di 20 parts of acrylate a and 20 parts of polyester acrylate;

[0073] The polyester acrylate is prepared from components comprising the following parts by weight:

[0074] 28 parts of hydroxyethyl acrylate b; 35 parts of phthalic anhydride b; 0.8 parts of catalyst b N,N-dibutylamine; 22 parts of epichlorohydrin; 0.2 parts of polymerization inhibitor b p-hydroxyanisole.

[0075] The preparation method of above-mentioned polyester acrylate, comprises the steps:

[0076] Mix the hydroxyethyl acrylate b, phthalic anhydride b and N,N-dibutylamine, raise the temperature for the first time, the temperature is 90°C-95°C...

Embodiment 2

[0086] This embodiment provides a polyester modified epoxy acrylate resin, which is prepared from the following components by weight:

[0087] 30 parts of hydroxyethyl acrylate a, 35 parts of phthalic anhydride a, 0.8 parts of catalyst a N,N-dibutylamine, 0.2 parts of epoxy resin E-4416 parts, polymerization inhibitor a p-hydroxyanisole, 0.2 parts of tripropylene glycol 20 parts of diacrylate a and 20 parts of polyester acrylate;

[0088] The polyester acrylate is prepared from components comprising the following parts by weight:

[0089] 33 parts of hydroxyethyl acrylate b; 40 parts of phthalic anhydride b; 0.8 parts of catalyst b N,N-dibutylamine; 28 parts of epichlorohydrin; 0.2 parts of polymerization inhibitor b p-hydroxyanisole.

[0090] The preparation method of above-mentioned polyester acrylate, comprises the steps:

[0091] Mix the hydroxyethyl acrylate b, phthalic anhydride b and N,N-dibutylamine, raise the temperature for the first time, the temperature is 95°C-1...

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Abstract

The invention relates to a polyester modified epoxy acrylate resin and a preparation method and application thereof. The resin is prepared from the following components in parts by weight: 24-30 partsof hydroxyethyl acrylate; 30-35 parts of phthalic anhydride; 15-20 parts of epoxy resin; and 15-20 parts of tripropylene glycol diacrylate. The polyester acrylate is a bis-functional polyester acrylate with a viscosity of 2000 MPa.s / 25 DEG C-4000 MPa.s / 25 DEG C, and an acid value of less than or equal to 5 mg KOH / g. After introduction of polyester acrylate chain segments into the epoxy resin mainchain, flexibility, adhesion and anti-yellowing properties of the epoxy acrylate resin can be effectively improved, and the modified epoxy acrylate resin conforms to national standards, and has excellent comprehensive performance and wide uses.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a polyester-modified epoxy acrylate resin and a preparation method and application thereof. Background technique [0002] Ultraviolet (UV) and electron beam (EB) curing radiation curing technology is an advanced technology for surface treatment of materials that appeared in the 1960s. UV-curable coating is a new type of coating that uses ultraviolet light to trigger rapid cross-linking and polymerization of liquid materials in the coating, and instantly solidifies into a solid at room temperature. It has the characteristics of high efficiency, environmental protection, energy saving, and high quality. It is widely used in paper, wood, plastic, Metal, leather, textile, stone, glass, ceramics and other fields. As the earliest commercialized UV coating, UV wood coating has become the most widely used UV product. [0003] UV-curable epoxy acrylate is a widely used environment-friendly prepo...

Claims

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Application Information

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IPC IPC(8): C08G59/16C08G59/14C09D163/10C09D5/00
CPCC08G59/1455C08G59/1494C09D163/10C09D5/002C08K2003/2241C08K13/04C08K3/22C08K5/103C08K7/26C08K3/34
Inventor 汤玉兰林敏仪温嘉敏梁晓琦
Owner CARPOLY CHEM GRP
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