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Light-cured resin based on vegetable oil and itaconic acid and preparation method and application of light-cured resin

A light-curing resin, itaconic acid technology, applied in the chemical modification of fatty acid, fatty acid production, coating, etc., can solve the problems of mechanical properties and repair effect not meeting actual use requirements, complicated synthesis process, etc., to improve reusability. High efficiency, simple process flow, high functional effect

Inactive Publication Date: 2021-09-21
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current light-curing recyclable materials have a cumbersome synthesis process, and their mechanical properties and repair effects do not meet the actual use requirements.

Method used

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  • Light-cured resin based on vegetable oil and itaconic acid and preparation method and application of light-cured resin
  • Light-cured resin based on vegetable oil and itaconic acid and preparation method and application of light-cured resin

Examples

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preparation example Construction

[0023] A method for preparing a photocurable resin based on vegetable oil and itaconic acid, the preparation steps are: (1) taking itaconic acid, glycidyl methacrylate, catalyst and polymerization inhibitor in a reaction vessel, the described The molar ratio of itaconic acid to glycidyl methacrylate is 1:1-1.1, the amount of polymerization inhibitor is 0.3-1% of the total mass, the amount of catalyst is 0.5%-1% of the total mass, stir well and preheat to Dissolve the solid, heat to 90-130°C and react for 1-4 hours; remove unreacted small molecules by distillation under reduced pressure to obtain the purified unsaturated itaconate half-ester precursor; (2) according to the carboxyl and epoxy groups The functional group ratio is 0.9-1.3:1, continue to add epoxidized vegetable oil into the reaction vessel, stir and heat up to 110-130°C, react for 2-5 hours, and obtain epoxidized vegetable oil-based epoxy acrylate prepolymer; ( 3) Add vinyl monomer, photoinitiator Darocur 1173 and...

Embodiment 1

[0029] (1) Add metered portions of itaconic acid and glycidyl methacrylate (the molar ratio of itaconic acid to glycidyl methacrylate is 1:1), and catalyst triphenylphosphine (amount of 0.3% of the total mass of itaconic acid and glycidyl methacrylate) and inhibitor hydroquinone (consumption is 0.5% of the total mass of itaconic acid and glycidyl methacrylate) in a reaction vessel, stir well Preheat until the solid dissolves, heat to 90°C for 4 hours; distill under reduced pressure to obtain a purified unsaturated itaconate half ester precursor;

[0030] (2) Continue to add epoxidized cottonseed oil (the molar ratio of the epoxy group on the unsaturated itaconate half ester precursor to the epoxidized cottonseed oil is 1:1) in the reactor, stir and heat up to 110 ℃, reacted for 5h, and obtained epoxidized cottonseed oil-based epoxy acrylate prepolymer;

[0031] (3) Add methyl acrylate monomer diluent to the epoxidized cottonseed oil-based epoxy acrylate prepolymer synthesized...

Embodiment 2

[0033] (1) Add metered portions of itaconic acid and glycidyl methacrylate (the molar ratio of itaconic acid to glycidyl methacrylate is 1:1.05), and catalyst triphenylphosphine (amount of 0.3% of the total mass of itaconic acid and glycidyl methacrylate) and inhibitor hydroquinone (consumption is 1% of the total mass of itaconic acid and glycidyl methacrylate) in a reaction vessel, stir well Preheating until the solid dissolves, heating to 100°C for 3 hours; distillation under reduced pressure to obtain a purified unsaturated itaconate half ester precursor;

[0034] (2) Continue to add epoxidized rubber seed oil to the reactor (the molar ratio of the epoxy group on the unsaturated itaconate half ester precursor to the epoxidized rubber seed oil is 1:1.1), stir and heat up to 120°C and react for 3 hours to obtain an epoxy acrylate prepolymer based on epoxidized rubber seed oil;

[0035] (3) Add hydroxypropyl acrylate monomer diluent to the epoxidized rubber seed oil-based epo...

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Abstract

The invention discloses light-cured resin based on vegetable oil and itaconic acid and a preparation method and application of the light-cured resin. The preparation method comprises the following steps: firstly, synthesizing an unsaturated itaconic acid half ester precursor by utilizing itaconic acid and glycidyl methacrylate, and then modifying epoxidized vegetable oil by utilizing the precursor to obtain a vegetable oil-based epoxy acrylate prepolymer; and finally, adding a vinyl diluent, and uniformly blending to obtain a final product. The synthetic process is solvent-free, the volatility is low, the synthetic route is simple, the main raw materials of the resin material are the vegetable oil and the itaconic acid, the bio-based content is high, and the use of a large amount of petroleum-based raw materials is expected to be reduced, so that the method is very green and environment-friendly. The obtained bio-based light-cured resin has good mechanical, thermal and coating properties, can be used as a main component of general paint or self-repairing paint, and is used for surface coatings of woodware, metal, plastic and the like.

Description

technical field [0001] The invention belongs to the field of synthetic polymer materials, and in particular relates to a photocurable resin based on vegetable oil and itaconic acid, a preparation method and application thereof. The light-cured coating prepared by the invention can partially replace traditional coatings, and is used for wood coatings, electrical protection coatings and common engineering plastics. Background technique [0002] Industries such as traditional coatings have a huge demand for petrochemical raw materials, but in recent years, there has been a decreasing trend. The reason is that excessive dependence on non-renewable petrochemical raw materials has accelerated global environmental pollution and resource depletion. Researchers and companies are more inclined to look for greener raw materials to gradually replace petrochemical raw materials. Ultraviolet (UV) curing technology has 5E characteristics such as high efficiency, energy saving, wide adapt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/00C09D4/02C09D4/06
CPCC11C3/00C09D4/06
Inventor 刘承果黄佳周永红张金帅朱国强胡云尚倩倩冯国东胡立红
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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