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The preparation method of polyphenylsulfone resin

A polyphenylsulfone and resin technology is applied in the field of preparation of polyphenylsulfone resin, which can solve the problems of discontinuous process flow, unclean polymer product purity, low purity, etc., to ensure purity and performance, high purity, and overcome ash content. lower effect

Active Publication Date: 2018-10-12
湖南国圆新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned defects, the present invention provides a preparation method of polyphenylsulfone resin, which overcomes the problem of discontinuous process flow caused by the need for pulverization of products in the production process of existing polyphenylsulfone resin, and also overcomes the problem of discontinuity in the traditional process. The inorganic salt particles wrapped in the product particles are not cleaned cleanly, which leads to the problem of low purity of the polymer product. It provides a new product precipitation and purification method for the field of amorphous polymer production, and simplifies the production process.

Method used

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  • The preparation method of polyphenylsulfone resin

Examples

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preparation example Construction

[0020] The present invention provides a preparation method of polyphenylsulfone resin, including polymerization reaction and precipitation and purification treatment of reaction products, wherein:

[0021] The raw materials of the polymerization reaction and their molar ratios are: 4,4'-dichlorodiphenyl sulfone: biphenol: catalyst: sulfolane: dehydrating agent=1:1:1.09~1.2:5.7~6.2:1.1~1.2;

[0022] The precipitation treatment of the reaction product is as follows: after the polymerization reaction is completed, the reaction temperature is first reduced to 100-120°C (preferably 110°C), and at the same time, sulfolane diluted raw material is added to the reactor, the amount of sulfolane added and the addition during the polymerization reaction The sum of the mass of sulfolane is 4 to 5 times the sum of the mass of 4,4'-dichlorodiphenyl sulfone and biphenyl diphenol; then the sedimentation liquid is added dropwise to the reactor, and the addition amount of the sedimentation liquid acco...

Embodiment 1

[0040] Take a 200L polymerizer as an example, prepare the raw materials according to the following quality: 4,4'-dichlorodiphenyl sulfone (16.08Kg), biphenol (10.43Kg), potassium carbonate (8.5Kg), sulfolane (40Kg), Trimethylbenzene (7.95Kg).

[0041] Weigh the above formula components accurately, and add sulfolane and 4,4'-dichlorodiphenyl sulfone into a 200L polymerizer equipped with a water separator, agitator (frame type and two-way stirring) and a heating device. Biphenyl diphenol and trimethyl benzene, pass inert gas nitrogen protection, start stirring (frame stirring 30r / min, paddle stirring 60r / min), heat the reactor jacket to 120°C, stir for 40 minutes after all the raw materials are dissolved Potassium carbonate was added, the temperature of the jacket of the polymerizer was raised to 200°C for 2.5 hours of reflux reaction, and trimethylbenzene and water were discharged from the water separator, and the temperature of the jacket of the polymerizer was raised to 230°C fo...

Embodiment 2

[0047] Refer to Example 1 for the specific method. The only difference from the examples is: extending the reflux reaction time by 30 minutes and the polymerization reaction time by 30 minutes; the properties of the obtained polyphenylsulfone resin are shown in Table 1.

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Abstract

The invention belongs to the technical field of high polymer materials and particularly relates to a preparing method for polyethylene sulfone resin. The preparing method for polyethylene sulfone resin comprises the steps that a polymerization reaction is carried out, and precipitation treatment and purification treatment are carried out on a reaction product, wherein the method of dripping a precipitation solution is adopted in precipitation treatment, the precipitation solution is a mixture prepared from deionized water and polyethylene sulfone at 1:1 by the mass ratio, the precipitation solution accounts for 8-12% of the total mass of added polyethylene sulfone, the dripping time ranges from 40 min to 60 min, stirring continues to be carried out for 30-60 min after the precipitation solution is added, and completely precipitated white polyethylene sulfone paste can be obtained; polyethylene sulfone resin is obtained by carrying out purification treatment on the white paste. According to the method, the problem that the technological process is inconsecutive due to the fact that products need to be smashed in the existing production process of polyethylene sulfone resin is solved, and meanwhile the problem that the purity of high polymer products is not high due to the fact that inorganic salt particles wrapped by product particles cannot be thoroughly removed by washing in the traditional technology is also solved.

Description

Technical field [0001] The invention belongs to the technical field of polymer materials, and particularly relates to a preparation method of polyphenylsulfone resin. Background technique [0002] Polyphenylsulfone (PPSU) resin is also known as polyphenylsulfone resin. As one of the non-crystalline special engineering plastics, it has excellent comprehensive properties. However, the solvent recovery and product of polyphenylsulfone resin in the actual production process The purification treatment is quite difficult, because the good solubility of the product in the solvent after the completion of the polyphenylsulfone resin polymerization reaction makes the entire material system viscous. After the synthesis reaction, most manufacturers often use the product to gradually release the product from the polymerization tank to cool and then pulverize. After pulverization, the powder is obtained for subsequent recovery of solvents and by-product salts. For example, the patent with pub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/20
CPCC08G75/20
Inventor 钟家春曲忠先
Owner 湖南国圆新材料科技有限公司
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