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 problems such as difficult to meet food grade requirements, poor appearance, unpleasant smell, etc.

Active Publication Date: 2010-05-19
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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] The reaction system of this example employs four reactors in series. This embodiment adopts the mode that all materials are added to the first reactor. First add 20kg of ethylbenzene and 48.95kg of styrene to the rubber dissolving tank, start stirring, and then cut 10kg into 10×10mm Asahi Asaprene TM Add 730AX rubber into the rubber dissolving tank through the glue inlet, stir and dissolve at room temperature for 10 hours to obtain a rubber solution mixture. Then add 19.04kg of acrylonitrile to it, then add 1.37kg of white oil, 0.0294kg of antioxidant 3,5-tert-butyl-4-hydroxyl-phenyl-octadecyl ester, 0.029kg of chain transfer agent dimerized a-methanol Base styrene, 0.0147kg initiator tert-butyl perbenzoate, and then continue to stir and disperse for 30min.

[0107] The feed rate of the reactor is 1540mL / h; the pressure of the whole system is controlled at 0.9±0.2MPa; the reaction temperature of the four reactors is sequentially controlled at 100°C; 106°C; 125°C; 145°...

Embodiment 2

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

[0114] The feed rate 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°C; 110°C; 130°C; 150°C; the stirring speed of the reactor is 100, 180, 30, 15 rpm; the volume of the reactor used is 3....

Embodiment 3

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

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

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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 toreach 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, more particularly 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 are widely used in many fields, among which extruded pipes, such as extrusion grade water supply pipes, and extruded sheets, especially refrigeration parts such as refrigerator linings, are the most suitable for ABS resin. Two important fields of application. [0003] Those skilled in the art know that ABS polymer is an impact-resistant resin composition prepared by dispersing rubber-like graft copolymers in styrene-based copolymers. Compared with other molding methods, extrusion molding requires the resin to have a uniform surface gloss after molding, and it should also have excellent vacuum formability and chemical corrosion resistanc...

Claims

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Application Information

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Patent Type & Authority Patents(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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