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Preparation system and preparation method of dihydroxy polyphenyl ether

A technology of bishydroxy polyphenylene ether and preparation system, achieving the effects of high reactivity, good compatibility and simple post-processing

Active Publication Date: 2022-06-10
北京中油创宇科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation system and method of bishydroxy polyphenylene ether, to solve the problem of high molecular weight and wide distribution of products in the prior art, And environmental protection issues that are difficult to deal with after the product

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  • Preparation system and preparation method of dihydroxy polyphenyl ether
  • Preparation system and preparation method of dihydroxy polyphenyl ether
  • Preparation system and preparation method of dihydroxy polyphenyl ether

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preparation example Construction

[0031] Preferably: the copper ion is a divalent copper ion or a monovalent copper ion, and other compounds forming complexes are low-carbon organic amines, such as diethylamine, ethylenediamine, etc., inorganic ammonium salts or ammonia water, etc.; The catalyst is one or more of the above-mentioned amine complexes containing copper ions and other compounds.

[0032] Preferably: the tetramethylbisphenol A is directly added to the second reactor in solid form or added to the second reactor as a saturated solution; the amount of tetramethylbisphenol A added is 2,6 dimethylphenol 26%--40% of the quality. Further, the amount of tetramethylbisphenol A added is 35%-37% of the mass of 2,6-dimethylphenol. The volume ratio of the amount of catalyst added to the raw material in the second reactor is 1:23-1:25.

[0033] The present invention will be further described below through specific examples.

[0034] Example 1

[0035] The preparation method of this embodiment is as follows: ...

Embodiment 1

In this embodiment, the 60-mesh stainless steel mesh type static mixing type first reactor with an aspect ratio of 150:1 is used, which is processed into a spiral shape with a total length of 3.1 meters and a resistance drop of 0.35 MPa; the second reactor is 80 liters Volumetric stainless steel paddle agitator, the distributor is DN25 stainless steel pipe and drilled 25 holes of Φ3, the direction of liquid injection is towards the stirring paddle; the circulation pump is an explosion-proof stainless steel centrifugal pump with a flow rate of 3 cubic meters per hour.

[0045] The preparation method is as follows: first, turn on the water heating system of the reactor, control the temperature of the reactor at 37°C, control and turn on the refrigeration system of the cooler, and the temperature is -22°C; configure 50 liters of 15% (m / m) 2,6 in the preparation tank The toluene solution of dimethylphenol; the solution is pumped into the second reactor from the preparation tank with...

Embodiment 2

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Abstract

The invention discloses a preparation system and a preparation method of dihydroxy polyphenyl ether, the system comprises a first reactor and a second reactor which are communicated with each other, the first reactor is composed of a static mixed reactor, the second reactor is composed of a pressure-resistant reaction, and the preparation method comprises a reactor constant temperature step, a charging step, a circular reaction step and a separation and purification step. Compared with the prior art, the method provided by the invention has the advantages of simple process, mild reaction conditions, easily controlled molecular weight, simple product post-treatment and high production efficiency, and can meet the industrial production requirements of low-molecular-weight dihydroxy polyphenyl ether. The problems that in the prior art, flash explosion is prone to occurring when pure oxygen serves as a coupling agent, the post-treatment environmental protection pressure is large due to the fact that a catalyst is not prone to separation, and the molecular weight is large and wide in distribution in the prior art are effectively solved.

Description

technical field [0001] The invention relates to a preparation system and method of bishydroxy polyphenylene ether, belonging to the technical field of new chemical materials. Background technique [0002] Copper clad laminate is the basic material of the electronics industry and the communication industry. The communication field under the background of high frequency, high speed and 5G industry has developed rapidly in the past ten years. In the technical development of this background, high frequency and high speed have become the research and development of copper clad laminate mainstream direction. High-frequency high-speed copper-clad laminate refers to the working frequency above 5GHz, signal transmission speed (10-50Gbps), low loss (Df in 0.005-0.01), suitable for high-frequency field, with ultra-low loss characteristics (ultra-low signal transmission loss) copper clad laminates. [0003] Low-molecular-weight dihydroxypolyphenylene ether with hydroxyl groups at both...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/40C08G65/38
CPCC08G65/4093C08G65/4087C08G65/38Y02P20/584
Inventor 张静
Owner 北京中油创宇科技有限公司
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