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Preparation method and application of UV (Ultraviolet) photocatalysis-based unsaturated vegetable oil D-A (Diels-Alder) reaction product

A reaction product, unsaturated technology, applied in the direction of organic chemistry, can solve the problems of complex post-processing, high energy consumption, high energy consumption, etc., and achieve the effect of optimizing UV reactivity and curing performance

Active Publication Date: 2017-04-19
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reaction requires high temperature heating and high energy consumption
The Chinese invention patent with the publication number CN102911330A discloses a vegetable oil-modified rosin phenolic resin and a preparation method thereof. First, the melted rosin and vegetable oil are subjected to Diels-Alder addition reaction, and then the phenolic resin condensate is added dropwise for Diels-Alder addition reaction. The reaction is carried out, and then the esterification reaction is carried out to obtain the product. The resin has high viscosity, good solubility, large molecular weight and uniform distribution, and is suitable for thermosetting inks. Carried out in a high-temperature reactor, the reaction temperature is high, the energy consumption is large, the operation is inconvenient and the post-treatment is relatively complicated
Although the above two inventions involve the application and modification of vegetable oils, they do not involve the use of UV photocatalysis to modify unsaturated vegetable oils by Diels-Alder reaction, and apply UV photocatalysis to the field of organic synthesis to expand the use of natural oils and fats. development and application of

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  • Preparation method and application of UV (Ultraviolet) photocatalysis-based unsaturated vegetable oil D-A (Diels-Alder) reaction product
  • Preparation method and application of UV (Ultraviolet) photocatalysis-based unsaturated vegetable oil D-A (Diels-Alder) reaction product
  • Preparation method and application of UV (Ultraviolet) photocatalysis-based unsaturated vegetable oil D-A (Diels-Alder) reaction product

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1UV photocatalytic lycate D-A reaction product MEMAA compound

[0039] (1) Synthesis and separation and purification of methyl trophic acid: Add 87.2 g of tung oil (0.10 mol, tung oil is calculated as glyceryl citric acid ester (872)) into a 250 mL three-neck flask, install a condensing reflux device, and heat the constant temperature water bath to 70 °C Afterwards, add the NaOH / methanol solution (0.872g / 19.2g) that prepares, wherein methyl alcohol: tung oil=6:1 (mol / mol), methyl alcohol 0.6mol (19.2g); NaOH is 1% (0.872g) of tung oil quality ); turn on the magnetic stirring, and stop the reaction after reacting for about 1 hour; add an appropriate amount of phosphoric acid to neutralize, transfer the reaction solution to a separatory funnel while it is hot, let it stand, and separate the glycerin layer (lower layer); wash the upper layer of liquid with hot distilled water 3 to 4 times, remove the water phase in the lower layer, distill under reduced pressure...

Embodiment 2

[0052] Embodiment 2UV photocatalysis linoleic acid ester D-A reaction product

[0053] (1) Synthesis and separation and purification of methyl linolenate: Add 87.2g linseed oil (0.10mol, linseed oil is calculated as linolenic acid glyceride (872)) in a 250mL three-necked flask, install a condensing reflux device, and heat the constant temperature water bath to After 60°C, add the prepared KOH / methanol solution, wherein methanol: tung oil = 5:1 (mol / mol), methanol 0.50mol; KOH is 2% of the mass of linseed oil; turn on the magnetic stirring, and stop after about 80min of reaction Reaction; add an appropriate amount of phosphoric acid for neutralization, transfer the reaction solution to a separatory funnel while it is hot, let it stand, and separate the glycerin layer (lower layer); wash the upper layer of liquid with hot distilled water for 3 to 4 times, remove the lower layer of water phase, and remove Pressure distillation to remove methanol and most of the water, etc., and d...

Embodiment 3

[0056] Embodiment 3UV photocatalysis soybean oleic acid ester D-A reaction product

[0057](1) Synthesis and separation and purification of soybean oil ester: Add 87.2g soybean oil (0.10mol, soybean oil is calculated as linoleic acid glyceride 878) in a 250mL three-necked flask, install a condensing reflux device, and heat the constant temperature water bath to After 80°C, add the prepared KOH / methanol solution, wherein methanol: tung oil = 8:1 (mol / mol), methanol 0.8mol; KOH is 2% of the mass of soybean oil; turn on magnetic stirring, react for about 50 minutes, stop Reaction; add an appropriate amount of phosphoric acid for neutralization, transfer the reaction solution to a separatory funnel while it is hot, let it stand, and separate the glycerin layer (lower layer); wash the upper layer of liquid with hot distilled water for 3 to 4 times, remove the lower layer of water phase, and remove Pressure distillation to remove methanol and most of the water, etc., and dry with an...

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Abstract

The invention belongs to the field of a UV (Ultraviolet) photocatalysis biomass chemical reaction and in particular discloses a preparation method and an application of a UV photocatalysis-based unsaturated vegetable oil Diels-Alder (D-A) reaction product. The preparation method comprises the steps of: preparing vegetable oleate with unsaturated natural vegetable oil as a raw material; then carrying out the D-A addition reaction on the vegetable oleate and maleic anhydride or a derivative thereof under the condition of UV light irradiation and a catalyst; and finally preparing the UV photocatalysis-based unsaturated vegetable oil D-A reaction product. A UV photochemical reaction process and a UV photochemical reaction mechanism of the unsaturated vegetable oil series are researched, the preparation of an ideal target product is further regulated and controlled, thus the research thought is creative. The UV photocatalysis-initiated unsaturated vegetable oil D-A addition reaction is researched and is applied to prepare a vegetable oil derivative so as to optimize the UV reaction activity and the solidification property.

Description

technical field [0001] The invention belongs to the field of UV photocatalytic biomass chemical reaction, in particular to a preparation method and application of a product based on UV photocatalytic Diels-Alder reaction (D-A reaction) of unsaturated vegetable oil. Background technique [0002] Our country is very rich in vegetable oil resources, so it has a huge advantage in the development of biomass materials. Common vegetable oils, such as soybean oil, peanut oil, rapeseed oil, sesame oil, castor oil, linseed oil, cashew nut shell oil, tung oil, etc. Vegetable oils have 1 to 3 unsaturated double bonds in their structure, and many of them also contain active reactive groups such as hydroxyl and carboxyl groups. Therefore, a wide variety of modified resins can be produced through direct reaction, deployment, and hydrolysis of natural vegetable oils. Fine chemical products are widely used because of their low price, convenient materials and biodegradability. For example, tu...

Claims

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Application Information

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IPC IPC(8): C07D307/89
CPCC07D307/89
Inventor 胡洋周健杨卓鸿周闯张超群袁腾
Owner SOUTH CHINA AGRI UNIV
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