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Modified epoxy acrylate prepolymer, preparation method and application

An epoxy acrylate and prepolymer technology, which is applied in the preparation of carboxylate, the preparation of organic compounds, chemical instruments and methods, etc., to achieve the effect of improved flexibility and excellent performance

Inactive Publication Date: 2012-05-02
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcoming of existing epoxy acrylate, a kind of preparation method of modified epoxy acrylate is provided

Method used

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  • Modified epoxy acrylate prepolymer, preparation method and application
  • Modified epoxy acrylate prepolymer, preparation method and application
  • Modified epoxy acrylate prepolymer, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the first step, add 1.23g (0.011mol) 1,5-hexadiene-3,4-diol, 3.08g (0.022mol ) Allyl succinic anhydride, 0.026g (0.15mmol) p-toluenesulfonic acid, heating and stirring, the temperature is controlled at 60-65°C, reacting for 5h to obtain a carboxyl-terminated prepolymer 4 . The second step to 4 Add 8.62g (0.022mol) of E-51 and 0.1g (0.33mmol) of triphenylphosphine, and control the temperature at 80-85°C, and react for 7 hours to obtain a carboxyl-terminated modified epoxy resin 6 . The third step to 6 Add 3.02g (0.021mol) of acrylic acid, 0.07g (0.56mmol) of p-hydroxyanisole, 0.07g (0.69mmol) of triethylamine, and react at 100-105°C for 4h to obtain a modified epoxy acrylate prepolymer 1a .

[0024] Take the prepolymer 1a 4.55g, under mechanical stirring, add 4.55g tripropylene glycol diacrylate, 3.25g 1,6-hexanediol diacrylate, 0.65g 1-hydroxycyclohexyl acetophenone, 0.13g polydimethylsiloxane and 0.13 g polyether-modified silicone, mixed for 10 minutes to ob...

Embodiment 2

[0026] In the first step, add 2.04g (0.018mol) 1,5-hexadiene-3,4-diol, 5.33g (0.038mol) to a four-necked flask equipped with a mechanical stirrer, condenser, thermometer, and nitrogen tube ) allyl succinic anhydride, 0.044g (0.26mmol) p-toluenesulfonic acid, heating and stirring, the temperature is controlled at 65-70°C, and the reaction is 5.5h to obtain a carboxyl-terminated prepolymer 4 . The second step to 4 Add 14.11g (0.036mol) E-44, 0.17g (0.56mmol) triphenylphosphine, the temperature is controlled at 85-90°C, and react for 6.5h to obtain carboxyl-terminated epoxy resin 6 . The third step to 6 Add 2.45g (0.034mol) of acrylic acid, 0.1g (0.81mmol) of p-hydroxyanisole, 0.1g (0.67mmol) of triethanolamine, and react at 105-110°C for 3.5h to obtain a modified epoxy acrylate prepolymer 1b .

[0027] Take the prepolymer 1b 14.47g, under mechanical stirring, add 10.34g trimethylolpropane triacrylate, 14.47g 1,6-hexanediol diacrylate, 2.07g benzoin ether, 0.41g polymethyl...

Embodiment 3

[0029] In the first step, add 2.30g (0.02mol) 1,5-hexadiene-3,4-diol, 6.17g (0.044mol) to a four-necked flask equipped with a mechanical stirrer, condenser, thermometer, and nitrogen tube ) allyl succinic anhydride, 0.051g (0.29mmol) p-toluenesulfonic acid, heating and stirring, the temperature is controlled at 70-75°C, and the reaction is 5h to obtain a carboxyl-terminated prepolymer 4 . The second step to 4 Add 15.68g (0.04mol) E-51, 0.19g (0.62mmol) triphenylphosphine, and control the temperature at 90-95°C, and react for 6h to obtain a carboxyl-terminated modified epoxy resin 6 . The third step to 6 Add 2.7g (0.038mol) of acrylic acid, 0.11g (0.89mmol) of p-hydroxyanisole, and 0.11g (0.34mmol) of tetrabutylammonium bromide. Oxyacrylate Prepolymer 1c .

[0030] Take 24.47g of the prepolymer, add 20.97g pentaerythritol triacrylate, 20.97g isooctyl acrylate, 2.1g benzil diketal, 0.7g organosilicon modified polysiloxane, 0.7g polyether under mechanical stirring Modified...

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Abstract

The invention discloses a preparation method and application of a modified epoxy acrylate prepolymer, which belong to the technical field of ultraviolet-light-curable photosensitive paint. By using the preparation method, the modified epoxy acrylate prepolymer is synthesized in three steps: namely, 1, reacting 1, 5-hexadiene-3, 4-diol with allyl succinic anhydride under the action of a catalyst to prepare a carboxyl-terminated prepolymer; 2, reacting the carboxyl-terminated prepolymer with epoxy resin under the action of the catalyst to prepare a carboxyl-terminated modified epoxy resin prepolymer; and 3, reacting the carboxyl-terminated modified epoxy resin prepolymer with acrylic acid at 100-120 DEG C under the action of a polymerization inhibitor and the catalyst to obtain a carboxyl-terminated modified epoxy acrylate prepolymer. Photocureable paint prepared by further compounding the prepolymer with a relevant accessory ingredient has lower viscosity and excellent flexility.

Description

technical field [0001] The invention belongs to the field of preparation of modified epoxy acrylate. In particular, it relates to a preparation method of modified epoxy acrylate and an ultraviolet (UV) curing coating containing the prepolymer. technical background [0002] UV-curable coating is an environmentally friendly and energy-saving coating developed by Bayer Company of Germany in the late 1960s. Because it has the advantages of energy saving, fast curing speed, high coating film quality, no solvent or only a small amount of solvent, and low volatilization, it continues to grow at an average annual growth rate of 25%, and has attracted more and more people's attention. [0003] Prepolymer is the main part of ultraviolet curing (UV) coating, which determines the basic performance of UV coating. Among the many prepolymers, bisphenol A epoxy acrylate is the most widely used in the radiation curing coating industry. The cured film formed has high hardness, high gloss, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/593C07C67/26C09D4/02
Inventor 朱红军金银赵亮刘媛媛何广科宋广亮
Owner NANJING UNIV OF TECH
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