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Degradable photocurable resin prepolymer and preparation method, photocurable resin and preparation method

A technology of photocurable resin and prepolymer, which is applied in the field of photocurable resin and its respective preparation and degradable photocurable resin prepolymer, which can solve the problems of environmental pollution and refractory degradation, and achieve the reduction of side reactions, fast curing speed, The effect of reducing bias

Active Publication Date: 2017-07-11
XIAOGAN ESUN NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current photocurable resins are difficult to degrade after curing, which pollutes the environment.

Method used

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  • Degradable photocurable resin prepolymer and preparation method, photocurable resin and preparation method
  • Degradable photocurable resin prepolymer and preparation method, photocurable resin and preparation method
  • Degradable photocurable resin prepolymer and preparation method, photocurable resin and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The R of the polylactide diol 2 The group is The epoxy reactive diluent used is polypropylene glycol diglycidyl ether with an epoxy value of 0.2886mol / 100g; the epoxy value of the E51 bisphenol A epoxy resin used is 0.5078mol / 100g.

[0033] Take 24.5g of maleic anhydride and 65.5g of polylactide diol into a 250ml three-necked flask, set an oil bath to heat at 60°C, heat at 70°C for 1 hour after the solid is completely dissolved, and then heat at 75°C for 1 hour to obtain light yellow Clear transparent liquid; take by weighing 24.6g E51 bisphenol A type epoxy resin, 43.3g polypropylene glycol diglycidyl ether, 0.7880g tetraethylammonium bromide, 0.1586g p-hydroxyanisole and join in the above-mentioned product, heat up React at 80° C. for 2 hours, then raise the temperature to 90° C. and react for 6 hours to obtain light yellow degradable photocurable resin prepolymer 1 .

[0034] Weigh 45.0g of tripropylene glycol diacrylate, 4.0007g of phenylbis(2,4,6-trimethylbenzoy...

Embodiment 2

[0037]The R group in the polylactide diol is The hydroxyl value is 214.06mg KOH·g -1 The epoxy reactive diluent used is polypropylene glycol diglycidyl ether with an epoxy value of 0.2886mol / 100g; the epoxy value of the E51 bisphenol A type epoxy resin used is 0.5078mol / 100g.

[0038] Take 49.0g maleic anhydride and 131.0g polylactide diol into a 500ml three-necked flask, set an oil bath to heat at 60°C, heat at 70°C for 1 hour after the solid is completely dissolved, and then heat at 75°C for 1 hour to obtain light yellow Clear transparent liquid; take by weighing 49.2g E51 bisphenol A type epoxy resin, 86.6g polypropylene glycol diglycidyl ether, 1.5799g tetramethylammonium bromide, 0.3164g p-methoxyphenol and join in the above-mentioned product, heat up React at 80° C. for 2 hours, then raise the temperature to 90° C. and react for 6 hours to obtain light yellow viscous degradable photocurable resin prepolymer 2 .

[0039] Weigh 90.0g of tripropylene glycol diacrylate, 8...

Embodiment 3

[0042] The R group in the polylactide diol is The hydroxyl value is 214.06mgKOH·g -1 The epoxy reactive diluent used is ethylene glycol glycidyl ether, and the epoxy value is 0.7401mol / 100g; the epoxy value of the E51 bisphenol A type epoxy resin used is 0.5078mol / 100g.

[0043] Take 49.0g maleic anhydride and 131.0g polylactide diol into a 500ml three-necked flask, set an oil bath to heat at 60°C, heat at 70°C for 1 hour after the solid is completely dissolved, and then heat at 75°C for 1 hour to obtain light yellow Clear transparent liquid; Take by weighing 49.2g E51 bisphenol A type epoxy resin, 33.8g ethylene glycol diglycidyl ether, 1.3155g tetraethylammonium bromide, 0.2621g p-hydroxyanisole and join in the above-mentioned product, Raise the temperature to 80° C. for 2 hours, and then raise the temperature to 90° C. for 6 hours to obtain light yellow viscous degradable photocurable resin prepolymer 3 .

[0044] Weigh 90.0g of tripropylene glycol diacrylate, 8.0011g of...

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Abstract

The invention relates to a degradable light-cured resin prepolymer, light-cured resin and respective preparation methods. The chemical formula of the light-cured resin prepolymer is as shown in the specification. To prepare the light-cured resin prepolymer, maleic anhydride and polylactide dihydric alcohol are enabled to react at low temperature of 60 DEG C and gradually heated, then the loss of maleic anhydride sublimation can be reduced, the over-amount of polylactide dihydric alcohol relative to maleic anhydride is avoided, the deviation of the acid value of a product and the theoretical value is reduced, side reaction and byproducts in later reaction can be also reduced, and the curing rate of the light-cured resin system can be ensured.

Description

technical field [0001] The invention relates to the field of photocurable materials, in particular to a degradable photocurable resin prepolymer, photocurable resin and their respective preparation methods. Background technique [0002] Photocurable resin is a photosensitive resin with a relatively low molecular weight, which has reactive groups that can be photocured, such as unsaturated double bonds or epoxy groups, and can activate photoinitiators under ultraviolet or visible light irradiation. Carry out curing reaction. Light-curing resin is a new material with high efficiency, environmental protection, energy saving and high quality. Its main advantages are: (1) fast curing rate and short cycle, generally within a few seconds to tens of seconds to cure, thus saving time and greatly improving production efficiency; (2) wide adaptability, applicable to a variety of Substrates, such as plastics, metals, glass, etc., are especially suitable for some heat-sensitive materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/676C08G63/78C08F283/01
Inventor 杨义浒童维红徐建明方文拓
Owner XIAOGAN ESUN NEW MATERIAL
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