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Polymrization method of preparing polyphonyl ether/phenylethylene kind polymer alloy in reactor

A technology of styrene and polyphenylene ether, which is applied in the field of preparing polyphenylene ether/styrene polymer alloys, can solve the problems of polymer degradation and discoloration, and achieve the effect of preventing melt degradation and reducing the process of melt blending

Inactive Publication Date: 2006-01-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

U.S. Patents 4,360,618, 4,277,575, 4,684,695, 4,196,116, and 4,309,514 disclose methods for preparing high-impact polyphenylene ether / polystyrene alloys by melt blending polyphenylene ether and styrene-based polymers containing rubber-like structural units, but This method of producing polyphenylene ether alloys requires melt blending of polyphenylene ether and styrene-based polymers at high temperatures, which easily degrades and discolors the polymers.

Method used

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  • Polymrization method of preparing polyphonyl ether/phenylethylene kind polymer alloy in reactor
  • Polymrization method of preparing polyphonyl ether/phenylethylene kind polymer alloy in reactor
  • Polymrization method of preparing polyphonyl ether/phenylethylene kind polymer alloy in reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Using a 500mL reactor with gas inlet and outlet, stirring paddle, thermometer and constant temperature jacket, the preparation of polyphenylene ether / polystyrene alloy was carried out as follows.

[0030] Add 250 mL of distilled water containing 10 grams of sodium hydroxide into the reaction kettle, control the temperature of the reaction kettle at 40° C., and stir to completely dissolve the sodium hydroxide. Then, 2.44 g of 2,6-dimethylphenol was added to the aqueous solution and stirred until completely dissolved, while air was blown in. Separately prepare a mixed solution containing 0.50 g of cuprous chloride, 1.2 g of ethylenediamine, and 10 mL of water. The mixed solution was added to the reaction kettle, and 145 mg of sodium lauryl sulfate was added. After stirring and reacting for 1 hour, add 2.44g styrene, increase the stirring rate to 1500rpm, after reacting for 18 hours, add 0.00244g dibenzoyl peroxide, remove the air in the above-mentioned reaction kettle wi...

Embodiment 2～7

[0032] Basically repeat the procedure described in Example 1, the difference is the copper compound and the amine compound, see Table 1.

[0033]

Embodiment 8

[0035] Using a 500mL reactor with gas inlet and outlet, stirring paddle, thermometer and constant temperature jacket, the preparation of polyphenylene ether / polystyrene alloy was carried out as follows.

[0036] Add 250 mL of distilled water containing 10 grams of potassium hydroxide into the reaction kettle, control the temperature of the reaction kettle at 50° C., and stir to completely dissolve the potassium hydroxide. Then, 21.2 g of 2-methyl-6-phenylphenol was added into the aqueous solution and stirred until completely dissolved, while oxygen was introduced to keep the oxygen pressure in the reactor at 1 atm. 1.316 g of potassium ferricyanate and 1.45 g of sodium lauryl sulfate were then added. After stirring and reacting for 1 hour, 10.6 g of styrene and 0.6 g of α-methylstyrene were added, and the stirring rate was increased to 1000 rpm. After reacting for 18 hours, add 0.053 g of azobisisobutyronitrile, use nitrogen to remove the air in the reaction kettle, seal it, ...

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Abstract

A process for preparing polyphenylether / styrene polymer alloy by polymerizing in reactor includes such steps as oxidizing-polymerizing reaction between phenol compound and oxidant in water under existence of styrene, catalyst, surfactant and alkaline compound, adding trigger or thermal triggering, free radical polymerizing reaction of styrene, centrifugal filter or shearing coagulation, centrifugal filter and drying. It features no environmental pollution.

Description

technical field [0001] The invention relates to a method for preparing polyphenylene ether / styrene polymer alloy, in particular to a method for preparing polyphenylene ether / styrene polymer alloy in a reactor. Background technique [0002] Due to its excellent mechanical strength, heat resistance, electrical insulation, dimensional stability, etc., polyphenylene ether has been widely used in the fields of electronics, automobile industry, machinery manufacturing, etc. However, due to the high viscosity of polyphenylene ether melt, the flow Poor performance makes it difficult to form and process, so it is often used after melt blending with styrene resin to form an alloy. [0003] U.S. Patents 3,306,874; 3,306,875; 3,257,357; 3,257,358, etc. have announced the production method of polyphenylene ether by oxidative coupling of phenolic compounds in organic solvents, mainly in the polymerization system composed of phenolic compounds, good solvents for polyphenylene ether, metal ...

Claims

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Application Information

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IPC IPC(8): C08L71/12C08L25/04C08F2/44
Inventor 申屠宝卿刘群翁志学
Owner ZHEJIANG UNIV
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