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Polyphenyl ether powder having small gaps and preparing method thereof

A manufacturing method and technology of polyphenylene ether, which is applied in the field of polyphenylene ether powder and its manufacturing, can solve problems such as solubility research, and achieve the effects of high loose bulk density, high solvent solubility, and good operability

Inactive Publication Date: 2017-09-19
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technologies focus on particle size adjustment, fine powder reduction, powder supply to the extruder, and efficient transportation and storage by compressing and pulverizing polyphenylene ether powder, but have not sufficiently studied solubility

Method used

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  • Polyphenyl ether powder having small gaps and preparing method thereof
  • Polyphenyl ether powder having small gaps and preparing method thereof
  • Polyphenyl ether powder having small gaps and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0220] Hereinafter, the present embodiment will be specifically described by giving specific examples and comparative examples for comparison therewith, but the present embodiment is not limited to the following examples. The measurement methods of physical properties and characteristics applied to Examples and Comparative Examples are shown below.

[0221] (1) Determination of number average molecular weight (Mn)

[0222] As a measurement device, a gel permeation chromatograph System 21 manufactured by Showa Denko Co., Ltd. was used to prepare a calibration curve using standard polystyrene, and use the calibration curve to measure the number average molecular weight (Mn) of the obtained polyphenylene ether powder. .

[0223] As standard polystyrenes, polystyrenes having molecular weights of 3,650,000, 2,170,000, 1,090,000, 681,000, 204,000, 52,000, 30,200, 13,800, 3,360, 1,300, and 550 were used.

[0224] As the column, a column in which two K-805L manufactured by Showa Den...

manufacture example 1

[0263] In a 40-liter jacketed polymerization tank (the bottom of the polymerization tank is equipped with a nozzle for introducing oxygen-containing gas, a turbine impeller and a baffle, and the exhaust line on the upper part of the polymerization tank is equipped with a reflux condenser), one side is filled with 0.5 L Nitrogen was blown in at a flow rate of 4.57 g, while adding 4.57 g of copper oxide (II), 24.18 g of 47% by mass hydrogen bromide aqueous solution, 11.00 g of di-tert-butylethylenediamine, 62.72 g of di-n-butylamine, 149.92 g of butyldimethylamine, 20.65 kg of toluene, and 3.12 kg of 2,6-dimethylphenol were stirred until a uniform solution was formed and the inner temperature of the polymerization tank was 25°C. Next, dry air was introduced from the nozzle into the polymerization tank at a rate of 32.8 NL / min to start polymerization. Dry air was blown for 140 minutes to obtain a polymerization mixture. In addition, during polymerization, internal temperature wa...

manufacture example 2

[0267] The molecular weight was controlled by changing the polymerization time by setting the drying air supply time to 125 minutes. Other conditions were the same as in Production Example 1 to obtain a polymer solution. The obtained polymer solution was referred to as polymer solution (2).

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Abstract

The invention relates to polyphenyl ether powder having small gaps and a preparing method thereof. The subject of the invention is to provide polyphenyl ether powder which has high loose bulk density, high solvent solubleness, and excellent operability in a high molecular weight. The polyphenyl ether powder is characterized in that in a particle, the volume of gaps having a diameter greater than 6.5 [mu]m is 4.0-13% of the total volume, and the volume of gas having a diameter in a range from 6.5 [mu]m to 9.8 [mu]m is 70-100% of the total volume.

Description

technical field [0001] The invention relates to a polyphenylene ether powder with tiny voids and a manufacturing method thereof. Background technique [0002] Polyphenylene ether has excellent processability and productivity, and can efficiently produce products and parts of desired shapes by molding methods such as melt injection molding and melt extrusion molding, and is widely used as parts in the fields of electric / electronic materials and automobiles with material. [0003] In addition, in recent years, as new industrial applications of polyphenylene ether, applications as electronic materials, applications for coating surfaces, and the like are under discussion. In particular, polyphenylene ether is dissolved in an aromatic organic solvent such as toluene to obtain a resin composition, and the resin composition is coated on the surface of an organic or inorganic substance such as wood, metal, glass, etc. by painting and coating, thereby improving the quality of the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/14C08J3/12C08L71/12
CPCC08J3/12C08J3/14C08J2371/12C08L71/12
Inventor 福圆真一山本繁
Owner ASAHI KASEI KK
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