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Method for preparing diphenolic propane diglycidol ether

A technology of diglycidyl ether and diphenol-based propane, which is applied in the field of preparation of diphenol-based propane diglycidyl ether, can solve the problem of high market price, achieve corrosion resistance and good mechanical properties, reduce emissions, and have good comprehensive performance Effect

Inactive Publication Date: 2009-07-01
蓝星安迪苏股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The diphenolic propane diglycidyl ether produced by this method has good overall performance, but the market price is relatively high

Method used

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  • Method for preparing diphenolic propane diglycidol ether
  • Method for preparing diphenolic propane diglycidol ether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of diphenolic propane diglycidyl ether, comprising the following steps:

[0022] The first step is to mix diphenolic propane, diphenolic propane by-products and epichlorohydrin, and add an aqueous solution of benzyltriethylammonium chloride with a mass concentration of 50-70% as a catalyst, and etherify at 75-125°C The reaction time is 0.5-10 hours, the rice flower reaction temperature can be selected as 80, 90, and the reaction time can be selected as 1 hour, 3 hours, 6 hours, 8 hours, 9 hours,

[0023] Among them, the quality of diphenol-based propane by-products is 1 to 4 times the quality of diphenol-based propane, for example, it can be selected as 1.2, 1.4, 2.0, 2.4, 2.8, 3.5, 3.9 times, and the quality of epichlorohydrin is diphenol-based 4 to 40 times that of propane, for example, it can be selected as 6 times, 8 times, 15 times, 20 times, 28 times, 32 times, 35 times, 38 times, and the quality of benzyl triethylammonium chloride is diphenol...

Embodiment 2

[0029] raw material name Specification (mass concentration) Feeding weight (parts by weight) Diphenolic propane by-product 300 Diphenolic propane ≥99％ 100 Epichlorohydrin ≥99％ 400 Epichlorohydrin (recycled) ≥80％ 400 Benzyltriethylammonium chloride ≥98％ 4 sodium hydroxide 28-32％ 360 added sodium hydroxide 28-32％ 180 tap water 180

[0030] Time, temperature, reaction process are as described in Example 1.

Embodiment 3

[0032] Time, temperature, reaction process are as described in Example 1.

[0033] raw material name Specification (mass concentration) Feeding weight (parts by weight) Diphenolic propane residue 200 Diphenolic propane ≥99％ 200 Epichlorohydrin ≥99％ 400 recycled epichlorohydrin ≥80％ 300 Benzyltriethylammonium chloride ≥98％ 4 sodium hydroxide 28-32％ 360 added sodium hydroxide 28-32％ 180 tap water 180

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Abstract

The invention discloses a diphenol propane diglycerol ether preparing method, comprising the steps of: mxing diphenol propane, diphenol propane by-products and epoxy chloropropane, and adding in benzyl triethyl ammonium chloride water solution as catalyst, making etherification reaction at 75-125 deg.C for 0.5-10 h, dropping in sodium hydroxide water solution and blending, and keeping; eliminating water and epoxy chloropropane and obtaining a mixture containing diphenol propane diglycerol ether; adding in toluene to extract to remove sodium chloride from the mixture. And it has better synthetic performance of product and low cost and recycles the wastes.

Description

technical field [0001] The present invention relates to a preparation method of diphenol-based propane diglycidyl ether, more specifically, the present invention is a method for preparing diphenol-based propane diglycidyl ether by utilizing by-products produced during the production of diphenol-based propane. Background technique [0002] The by-products of diphenol-based propane refer to the by-products of the production of diphenol-based propane, which are composed of diphenol-based propane isomers, aromatic unit phenols, aromatic dihydric phenols, and aromatic polyphenols. Usually, diphenol-based propane residues are collected and sold externally for the production of phenolic resins, which fails to fully reflect the economic and social benefits of diphenol-based propane residues. [0003] The production method of diphenol-based propane diglycidyl ether is generally: the ring-opening reaction of diphenol-based propane with an equivalent or slightly excess epichlorohydrin ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C43/205C07C41/09
Inventor 王祖良金戈翁建平
Owner 蓝星安迪苏股份有限公司