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A kind of light curing epoxy acrylate prepolymer for inkjet printing and its preparation method and application

An epoxy acrylate, inkjet printing technology, applied in application, sulfide preparation, ink, etc., can solve the problem of unsatisfactory UV ink surface curing effect, limitation of weather resistance and curing rate, low power of LED curing equipment, etc. problems, to achieve the effect of improving the surface curing effect, increasing the curing rate, and increasing the curing rate

Active Publication Date: 2021-02-02
广州五行材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the EU's restrictions on mercury lamps, more and more manufacturers use LED lamps to cure instead of traditional mercury lamps. However, due to the generally low power of LED curing equipment and the lack of a good matching LED photoinitiator, the surface of UV inks The curing effect is not very ideal, which seriously affects the production efficiency
[0003] Inkjet printing equipment has extremely high requirements on ink viscosity. Traditionally, polyester is used as the main raw material of printing ink, mainly considering the low viscosity of polyester and the wetting and dispersibility of pigments; however, polyester has a large number of ester bonds in its structure. , has great limitations in weather resistance and curing rate

Method used

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  • A kind of light curing epoxy acrylate prepolymer for inkjet printing and its preparation method and application
  • A kind of light curing epoxy acrylate prepolymer for inkjet printing and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Put 29.6g of trimethylolpropane triacrylate into a four-necked flask equipped with a tetrafluoroethylene stirring rod, place it in an ice-water bath, and slowly add 10.6g of mercaptopropionic acid dropwise through a constant pressure dropping funnel, and place on ice. Stir evenly in a water bath for 24 hours to obtain an acid containing multiple unsaturated double bond structures, denoted as F1.

[0026] 2. Put 0.05g of hydroquinone, 0.28g of triphenylphosphine and 20.1g of F1 mixture into a four-neck flask equipped with a thermometer and a tetrafluoroethylene stirring rod, protect it with nitrogen, raise the temperature to 104°C, and slowly add 7.6g of butyl glycidyl ether was reacted at a constant temperature of 104°C for 6h to obtain an epoxy acrylate prepolymer.

Embodiment 2

[0028] 1. Put 35.2g of pentaerythritol tetraacrylate into a four-necked flask equipped with a tetrafluoroethylene stirring rod, place it in an ice-water bath, slowly add 10.6g of mercaptopropionic acid dropwise using a constant pressure dropping funnel, and stir evenly in the ice-water bath After 24h, an acid containing multiple unsaturated double bond structures was obtained, denoted as F2.

[0029] 2. Put 0.1g of p-hydroxyanisole, 0.48g of N-N dimethylaniline and 22.9g of F2 mixture into a four-necked flask equipped with a thermometer and a tetrafluoroethylene stirring rod, under nitrogen protection, heat up to 106°C, Slowly add 8.9 g of phenyl glycidyl ether dropwise, and react at a constant temperature of 106° C. for 5 hours to obtain an epoxy acrylate prepolymer.

Embodiment 3

[0031] 1. Put 48.2g of trimethylolpropane tetraacrylate into a four-necked flask equipped with a tetrafluoroethylene stirring rod, place it in an ice-water bath, and slowly add 21.2g of mercaptopropionic acid dropwise using a constant pressure dropping funnel , stirred evenly in an ice-water bath for 24 hours, and an acid containing multiple unsaturated double bond structures was obtained, which was designated as F3.

[0032] 2. Put 0.16g of 2-tert-butylhydroquinone, 1.05g of N-N dimethylbenzylamine and 34.7g of F3 mixture into a four-necked flask equipped with a thermometer and a tetrafluoroethylene stirring rod, protect it with nitrogen, and raise the temperature To 104°C, 17.8g of phenyl glycidyl ether was slowly added dropwise, and reacted at a constant temperature of 104°C for 6 hours to obtain an epoxy acrylate prepolymer.

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Abstract

The invention belongs to the technical field of polymer polymerization, and discloses a photocurable epoxy acrylate prepolymer for inkjet printing, a preparation method and application thereof. The epoxy acrylate prepolymer is prepared by condensation reaction of a monoglycidyl ether and an acid containing multiple unsaturated double bond structures under the presence of a polymerization inhibitor and a catalyst. The monoglycidyl ether and an acid containing The molar ratio of acids with multiple unsaturated double bonds is (0.1-1): 1, and the acid containing multiple unsaturated double bonds is prepared by addition of multifunctional acrylate and mercaptopropionic acid through mercaptoene Obtained, the number of unsaturated double bond groups of the described polyfunctional acrylate is at least greater than or equal to 3 and less than or equal to 6, and the molar ratio of the unsaturated double bond in the described polyfunctional acrylate to mercaptopropionic acid is ( 1~4):1. The epoxy acrylate prepolymer has the characteristics of low viscosity, good pigment wetting, fast reaction speed and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer polymerization, and more specifically relates to a photocurable epoxy acrylate prepolymer for inkjet printing and its preparation method and application. Background technique [0002] Compared with the traditional thermal curing method, UV curing technology, as an efficient, convenient and economical greener technology, has played a very meaningful role in many fields. In the field of printing and packaging, due to the high efficiency of UV curing technology, light curing technology has become the main coating method of printing ink. With the EU's restrictions on mercury lamps, more and more manufacturers use LED lamps to cure instead of traditional mercury lamps. However, due to the generally low power of LED curing equipment and the lack of a good matching LED photoinitiator, the surface of UV inks The curing effect is not ideal, which seriously affects the production efficiency. [0003] Inkj...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C321/14C07C319/20C09D11/30
CPCC07C319/18C07C319/20C09D11/30C07C321/14
Inventor 曾雪标肖张铭李宇荣杨德彬贾国忠
Owner 广州五行材料科技有限公司