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Continuous bulk polymerization process for preparing extruded acrylonitrile-butadiene-styrene graft copolymer

An extrusion-grade, styrene technology, applied in the field of polymer preparation, can solve the problems of long process, difficult to meet food-grade requirements, complex and other problems

Active Publication Date: 2007-06-27
太仓中化环保化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are that the process is long and complicated, the performance stability of the product is not ideal, the appearance is poor, and its molding lining produces unpleasant smell due to the excessive residual monomer of the product, and it is difficult to achieve food grade when used in refrigerator lining Require

Method used

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  • Continuous bulk polymerization process for preparing extruded acrylonitrile-butadiene-styrene graft copolymer
  • Continuous bulk polymerization process for preparing extruded acrylonitrile-butadiene-styrene graft copolymer
  • Continuous bulk polymerization process for preparing extruded acrylonitrile-butadiene-styrene graft copolymer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] The reaction system of this embodiment uses four reactors in series. In this embodiment, all materials are added to the first reactor. First add 20kg ethylbenzene and 48.95kg styrene into the rubber dissolving tank, start stirring, and then cut 10kg into 10×10mm Asahi Asaprene TM 730AX rubber is added to the rubber dissolving tank through the glue port, and stirred and dissolved at room temperature for 10 hours to obtain a rubber solution mixture. Then add 19.04kg acrylonitrile, then add 1.37kg white oil, 0.0294kg antioxidant 3,5-tert-butyl-4-hydroxy-phenyl-octadecyl ester, 0.029kg chain transfer agent dimer a-methyl Styrene, 0.0147kg initiator tert-butyl perbenzoate, and then continue to stir and disperse for 30 minutes.

[0107] The feed rate of the reactor is 1540mL / h; the pressure of the entire system is controlled at 0.9±0.2MPa; the reaction temperature of the 4 reactors is controlled to 100℃; 106℃; 125℃; 145℃; the stirring speed of the reactor is successively 100, 100...

Embodiment 2

[0113] The reaction system of this embodiment still uses four reactors in series. In this embodiment, all materials are added to the first reactor. Add 20kg of ethylbenzene and 48.95kg of styrene into the rubber dissolving tank, and start stirring to cut into 10*10mm Asahi Asaprene TM 10kg of 730AX rubber is added to the rubber dissolving tank through the glue port, and stirred and dissolved at room temperature for 9 hours. Then add 19.04kg of acrylonitrile, 1.37kg of white oil, 0.0294kg of antioxidant 3,5-tert-butyl-4-hydroxy-phenyl-octadecyl ester, and 0.0392kg of chain transfer agent dimer a-methylbenzene Ethylene, 0.0147kg initiator tert-butyl perbenzoate, continue to stir and disperse for 30 minutes.

[0114] The feed volume of the reactor is 1540mL / h; the system pressure is controlled at 0.9±0.2MPa; the reaction temperature of the four reactors is 101℃; 110℃; 130℃; 150℃; the stirring speed of the reactor is 100, 180, 30, 15rpm; the reactor volume used is 3.9L.

[0115] At th...

Embodiment 3

[0119] The reaction system of this embodiment uses five reactors in series. In this embodiment, part of the material is added to the first reactor, and part of the material is grafted to a certain degree through the fifth reactor (also called "grafting reactor") and reversed, and then added to the subsequent third reactor. The way. Add 19.8kg ethylbenzene and 48.5kg styrene into the rubber dissolving tank, start stirring and cut into 10 * 9kg of 10mm Asahi AsapreneTM 730AX rubber and 1kg of CB565 rubber are added to the rubber dissolving tank through the glue port, and stirred and dissolved at room temperature for 11 hours. Then add 18.5kg of acrylonitrile, 1.37kg of white oil, 0.0294kg of antioxidant 3,5-tert-butyl-4-hydroxy-phenyl-octadecyl ester, and 0.0368kg of chain transfer agent dimer a-methylstyrene , 0.0147kg initiator tert-butyl perbenzoate, continue to stir and disperse for 30 minutes.

[0120] The main feed rate of the reactor is 1540mL / h; the system pressure is contro...

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Abstract

The present invention is continuous bulk polymerization process for preparing extruded acrylonitrile-butadiene-styrene graft copolymer. In the presence of organic peroxide, rubber solution of the mixture of alkyl vinyl arene monomer and unsaturated vinyl nitrile monomer are reacted at 90-170 deg.c for 8-12 hr, the polymer is made to pass through rubber grafting and grafted rubber phase transfer to reach monomer conversion rate of 65-85 %, and the un-reacted monomer and solvent are further eliminated from the polymer melt to obtain ABS resin product with rubber content of 12-18 %. The said process can obtain ABS resin product with high brightness, high extinction, high heat resistance, high impact strength and good machining performance, and the product is suitable for making pipe, plate, etc, especially lining of refrigerator.

Description

【Technical Field】 [0001] The invention relates to a method for preparing a polymer, and more specifically to a method for preparing an acrylonitrile-butadiene-styrene graft copolymer (ABS polymer) with special properties and excellent thermal stability. 【Background technique】 [0002] For a long time, people have found that ABS polymer materials have a wide range of applications in many fields. Among them, extruded pipes, such as extrusion water pipe fittings, and extruded sheets, especially refrigeration components such as refrigerator linings, are ABS resin. Two important application areas. [0003] Those skilled in the art are well aware that ABS polymer is an impact-resistant resin composition made by dispersing a rubber-like graft copolymer in a styrene-based copolymer. Compared with other molding methods, extrusion molding requires a uniform gloss on the surface of the molded product after molding, as well as excellent vacuum moldability and chemical resistance. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08K5/11C08J11/02C08L83/04
Inventor 田冶
Owner 太仓中化环保化工有限公司
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