Preparation method of novel monohydroxy biology-based epoxy resin

A single hydroxyl type epoxy resin and base epoxy resin technology, applied in organic chemistry and other directions, can solve the problems of immature theory and hinder the development of bio-based chemical technology, and achieve low price, good electrical insulation, and mild synthesis conditions. Effect

Active Publication Date: 2012-11-28
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the fact that the development of bio-based products is still in its infancy and the theory is not mature enough, the development of many products is only in the laboratory research stage, coupled with the limitations of the structure of bio-based natural molecules, the performance of bio-based products is not as good as that of other bio-based products. There is still a certain gap in traditional petroleum and products, which hinders the development of bio-based chemical technology to a certain extent

Method used

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  • Preparation method of novel monohydroxy biology-based epoxy resin
  • Preparation method of novel monohydroxy biology-based epoxy resin
  • Preparation method of novel monohydroxy biology-based epoxy resin

Examples

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Effect test

Embodiment 1

[0024] Under normal pressure conditions, 33.93g cardanol glycidyl ether, 0.81g triphenylphosphine, 0.05g4-methoxyphenol are joined in the four-necked flask that magnetic stirrer, thermometer and condenser tube are housed, and control reaction temperature is At 90°C, use a dropping funnel to drop 20.00 g of linoleic acid drop by drop, finish the drop within 1 hour, and react until the acid value is lower than 5 to complete the reaction (measured by acid-base titration) to obtain a monohydroxy type unsaturated bio-based resin A 1 .

[0025] Resin A 1 Use a dropping funnel to drop dropwise into a reaction vessel containing 200ml of dichloromethane and 65.34g of m-chloroperoxybenzoic acid, drop it within 1 hour, use ice bath to stir and react for 10 hours, and then use 5wt of the reaction product successively % sodium bicarbonate solution and distilled water to wash to neutrality, and use a separatory funnel to separate the liquid, and finally the organic layer is subjected to v...

Embodiment 2

[0029] Under normal pressure, 33.93g of cardanol glycidyl ether, 0.81g of tetramethylammonium bromide, and 0.05g of p-hydroxyanisole were added to a four-necked flask equipped with a magnetic stirrer, a thermometer and a condenser tube to control the reaction. The temperature is 100°C, and 20.06g of oleic acid is added drop by drop with a dropping funnel, and the reaction is completed until the acid value is lower than 5 (measured by acid-base titration) to obtain a monohydroxy type unsaturated bio-based resin A 2 .

[0030] Resin A 2Use a dropping funnel to drop dropwise into a reaction vessel containing 200ml of dichloromethane and 49.01g of m-chloroperoxybenzoic acid, drop it within 1 hour, use ice bath to stir and react for 12 hours, and then use 5wt of the reaction product successively % sodium bicarbonate solution and distilled water to wash to neutral, and use a separatory funnel to separate the liquid, the organic layer is subjected to vacuum distillation to remove th...

Embodiment 3

[0032] Under normal pressure conditions, 47.62g cardanol glycidyl ether, 1.16g tetrabutylammonium bromide, 0.08g hydroquinone are added in the four-necked flask that magnetic stirrer, thermometer and condenser tube are housed, control reaction temperature 29.81g of cardanol was added drop by drop with a dropping funnel at 115°C, and the drop was completed within 1 hour, and the reaction was completed until the acid value was lower than 5 (measured by acid-base titration) to obtain a monohydroxy type unsaturated bio-based resin A 3 .

[0033] Resin A 3 Use a dropping funnel to drop dropwise into a reaction vessel containing 200ml of dichloromethane and 92.04g of m-chloroperoxybenzoic acid, drop it within 1 hour, use ice bath to stir and react for 3 hours, and then use 5wt of the reaction product successively % sodium bicarbonate solution and distilled water to wash to neutral, and use a separatory funnel to separate the liquid, the organic layer is subjected to vacuum distill...

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Abstract

The invention discloses a preparation method of novel monohydroxy biology-based epoxy resin, which belongs to the technical field of chemical industry. The method comprises the following steps of: reacting cardanol glycidyl ether with unsaturated fatty acid or cardanol to generate monohydroxy unsaturated biology-based resin A; and performing epoxidation on unsaturated double bonds on an aliphatic chain of the resin A to obtain monohydroxy epoxy resin with high biology content. The novel epoxy resin has the characteristics of environment-friendly and reproducible raw materials, simple synthesis process, high stability, high heat resistance and high electric insulating property after curing, and the like; the biology content is over 90 percent, and the epoxy value is up to 0.28-0.51eq/100g; and the method is suitable for the fields of coatings, composite materials, casting materials, electronic electrical appliance materials, bonding agents, resists and the like.

Description

technical field [0001] The invention relates to a preparation method of a novel monohydroxy type bio-based epoxy resin, in particular to a method for preparing an epoxy resin with high bio-based content by utilizing renewable green resources, and belongs to the technical field of chemistry and chemical engineering. Background technique [0002] With the continuous depletion of the earth's oil resources, the international crude oil price is rising step by step, and the price of petrochemicals is also rising. The chemical industry, especially the modern polymer industry, as a field based on the petroleum industry, is facing severe challenges; A wide range of sources and low prices, green and renewable bio-based resources to replace high-priced and highly environmentally destructive traditional petroleum-based chemicals to manufacture chemical products has become the most effective and promising method at present. It can not only reduce chemical The dependence of the industry, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D303/26C07D301/14C07D301/12
Inventor 刘仁蔡武刘晓亚朱家佳刘石林
Owner JIANGNAN UNIV
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