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Preparation method of anacardol glycidyl ether

A technology of glycidyl ether and cardanol, which is applied in the chemical industry, can solve the problems of large amount of epichlorohydrin, dark reaction color, and long reaction time, and achieve low hydrolysis chlorine, low epoxy equivalent, and reduction of free cardanol The effect of content

Inactive Publication Date: 2018-07-20
江苏万盛大伟化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the amount of epichlorohydrin is too large, the reaction color is dark, the layering is slow, the recovery process causes some losses and waste, and the reaction takes a long time.

Method used

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  • Preparation method of anacardol glycidyl ether
  • Preparation method of anacardol glycidyl ether
  • Preparation method of anacardol glycidyl ether

Examples

Experimental program
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Embodiment 1

[0047] Embodiment 1: the preparation method of cardanol glycidyl ether

[0048] 1. Raw materials: cardanol, epichlorohydrin, sodium hydroxide, the molar ratio of the three is 1:3.6:1.3, the catalyst (tetraethylammonium bromide and tetramethylammonium bromide is 5: 1 mixed mixture), the dosage is 1‰ of the quality of cardanol.

[0049] 2. Preparation method:

[0050] 1) Take cardanol, epichlorohydrin, sodium hydroxide and catalyst according to the proportioning ratio, and make sodium hydroxide into a 40% sodium hydroxide solution for subsequent use;

[0051] 2) Mix cardanol, epichlorohydrin and catalyst, stir and heat up to 50°C, and slowly add sodium hydroxide solution with a concentration of 40% after constant temperature (the molar ratio of cardanol to sodium hydroxide is 1:1.1, accounting for 84.6% of the total moles of sodium hydroxide), after stirring at a constant temperature of 50-70°C for 0.5 hours, the dripping method of constant temperature (68°C) vacuum distillati...

experiment example 1

[0056] 1. Sample:

[0057] Sample 1 is embodiment 1;

[0058] Reference substance 1: adopt existing technology such as the scheme and preparation method in "Preparation of Cardanol Glycidyl Ether" by Xu Li et al. (Xu Li et al., Preparation of Cardanol Glycidyl Ether, Fine Petrochemical Industry, Vol. Phase 1 January 2013: 1-4), the proportion of this document is that the molar ratio of cardanol, epichlorohydrin and sodium hydroxide is 1:6:3, the amount of catalyst is 2%, and the four ingredients are added In a three-necked flask, react at a constant temperature of 70°C for 10 hours, cool to room temperature, add petroleum ether to wash and filter to remove salt, wash with water to neutrality, remove unreacted epichlorohydrin and solvent by rotary evaporation, and finally obtain cardanol glycidyl ether . The yield is as high as 89.1%;

[0059] Reference substance 2: replace the catalyzer among the embodiment 1 with tetrabutyl ammonium bromide, consumption is identical with t...

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PUM

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Abstract

The invention relates to a preparation method of anacardol glycidyl ether. According to the preparation method, raw materials include anacardol, epoxy chloropropane, sodium hydroxide and a catalyst are used. The catalyst is a mixture of tetraethylammonium bromide and tetramethyl ammonium bromide; meanwhile, reduced pressure distillation is used for recovering the epoxy chloropropane for many timesin the method. The epoxide equivalent of the anacardol glycidyl ether prepared by the preparation method provided by the invention is lower and stable; the content of free anacardol is greatly reduced.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a preparation method of cardanol glycidyl ether. Background technique [0002] Cardanol glycidyl ether (CGE) is an epoxy compound containing a benzene ring and a long unsaturated C15 aliphatic hydrocarbon chain in its molecular structure. It has low viscosity, high boiling point, insoluble in water, good flexibility, stable properties and heat resistance. Good sex and other characteristics. It can be widely used in paint industry, rubber industry and synthetic resin industry. [0003] In the early stage, in order to improve water resistance, 02116451.7 (publication number is CN1374299A) discloses a kind of synthesis process, and its raw material is cashew nut shell liquid, epichlorohydrin, sodium hydroxide, and its molar ratio is 0.8-1.1:1.5-3.0:0.8 -2.0. The reaction process (see reaction formula 2) is as follows: Weigh cashew nut shell oil and epichlorohydrin, stir, pass nit...

Claims

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Application Information

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IPC IPC(8): C07C41/03C07C43/23C07D301/26C07D303/23
CPCC07C41/03C07D301/26C07D303/23C07C43/23
Inventor 王军唐毅陈红星史豫蒙
Owner 江苏万盛大伟化学有限公司
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