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Process for producing polyglycidyl ether

A technology of polyglycidyl ether and a manufacturing method, applied in the directions of organic chemistry, organic chemistry, etc., can solve the problems of no research, difficulty in obtaining the target substance, and high chlorine content, and achieves a small epoxy equivalent and a chlorine-containing The effect of low rate and easy operation

Inactive Publication Date: 2012-10-03
ADEKA CORP
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  • Application Information

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Problems solved by technology

[0004] However, little research has been done on methods for producing polyglycidyl ethers using β-methylepichlorohydrin
For example, it is well known that there is a method of reacting a polyol compound with β-methylepichlorohydrin and epichlorohydrin in the presence of an aqueous sodium hydroxide solution (Patent Document 1). polyglycidyl ether, it is also difficult to obtain the target
In addition, when switching to the usual production method of polyol or diol, that is, the production method in which an addition reaction using a Lewis acid catalyst or the like is carried out in the first stage, followed by a saponification reaction using an alkali in the second stage, Unavoidable side reactions occur, which has the disadvantage of high chlorine content

Method used

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  • Process for producing polyglycidyl ether
  • Process for producing polyglycidyl ether
  • Process for producing polyglycidyl ether

Examples

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Embodiment 1

[0036] 178.9 g (0.5 mol) of a propylene oxide adduct of bisphenol A having a hydroxyl value of 314 (BPX-11 manufactured by ADEKA Co., Ltd.), 462.5 g (5.0 mol) of β-methyl epichlorohydrin, 1.5 g of tetramethylammonium chloride (0.84 parts by mass relative to 100 parts by mass of polyol) was placed in a glass flask equipped with a thermometer, a stirrer, and a cooling tube, and the inside of the flask was heated to 60° C. to maintain the internal pressure. At 11.3kPa and reflux.

[0037] While maintaining the temperature and pressure of the reaction system, 108.3 g of 48.5% by mass sodium hydroxide aqueous solution (1.3 moles of sodium hydroxide) was added dropwise for 90 minutes, aged at 60°C for 150 minutes, and the product produced in the reaction system was filtered. of salt. After distilling off excess β-methylepichlorohydrin in the filtrate at 120°C under reduced pressure, add toluene and wash thoroughly with water, then distill off toluene under reduced pressure and filt...

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Abstract

Disclosed is a process for producing a polyglycidyl ether that is represented by general formula (II) and in which the total content of chlorine is reduced, the process being characterized by reacting a polyol represented by general formula (I), beta-methylepichlorohydrin, and an alkali in the presence of a phase-transfer catalyst. In general formula (I), R1 and R2 each independently represent a hydrogen atom or a C1-4 alkyl group; and m and n each independently represent a number from 1 to 10. In general formula (II), R1 and R2 each represent the same group as R1 and R2 in the general formula (I).

Description

technical field [0001] The present invention relates to a method for producing polyglycidyl ether, in particular to the chlorine content obtained by reacting the propylene oxide adduct of bisphenol, β-methyl epichlorohydrin and alkali in the presence of a phase transfer catalyst. A method for producing a low polyglycidyl ether. Background technique [0002] Cured products obtained from polyepoxides are widely used in various industrial fields because of their relatively good adhesion to various substrates, heat resistance, chemical resistance, electrical properties, and mechanical properties. In the field of coatings or adhesives. [0003] Among the above-mentioned polyepoxides, a specific polyglycidyl ether obtained from a propylene oxide adduct of bisphenol and β-methylepichlorohydrin has been known to exhibit excellent curability in cationic curing systems. material is useful. [0004] However, conventionally, almost no research has been conducted on methods for produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D301/28C07B61/00C07D303/30
CPCC07D303/30C07D301/28
Inventor 小川亮井出光紀玉祖健一
Owner ADEKA CORP
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