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Bulk polymerization production process of ABS (Acrylonitrile Butadiene Styrene) resin and application of static mixer

A technology of ABS resin and static mixing, applied in the field of bulk polymerization production technology

Active Publication Date: 2014-04-23
上海华谊工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to overcome the defect that it is difficult to prepare ABS resin with a static mixing reactor in the prior art. According to the actual production process of ABS resin, through the research on the static mixing reactor and operating conditions, the static The mixing reactor is used in the production process of bulk ABS resin, which provides a production process of bulk polymerization of ABS resin using static mixer and the application of static mixer in the bulk production process of ABS resin

Method used

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  • Bulk polymerization production process of ABS (Acrylonitrile Butadiene Styrene) resin and application of static mixer
  • Bulk polymerization production process of ABS (Acrylonitrile Butadiene Styrene) resin and application of static mixer
  • Bulk polymerization production process of ABS (Acrylonitrile Butadiene Styrene) resin and application of static mixer

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Both the first and second reactors are CSTR reactors, the first reactor is used as a reactor for the rubber grafting process, and the second reactor is used as a reactor for the phase inversion process.

[0054] The reaction mixture in the first reactor includes: (1) rubber solution: styrene 65%, acrylonitrile 21%, butadiene rubber 14% (relative to the percentage of rubber solution). The cis-structure content in the butadiene rubber used is 40%, and the 1,2-structure content is 13%; (2) tert-butyl peroxyneodecanoate 0.03%; (3) α-methylstyrene dimer 0.05%; (4) 20% ethylbenzene (relative to the percentage of rubber solution).

[0055] Add mercaptan 0.05% to the second reactor.

[0056] Production Process:

[0057] (1) Rubber grafting process: the rubber solution is added into the first reactor to carry out grafting reaction, the reaction temperature is 70°C, and the dry matter content of the reaction mixture in the first reactor is controlled to be 18wt%;

[0058] (2) ...

Embodiment 2

[0065] Both the first and second reactors are CSTR reactors, the first reactor is used as a reactor for the rubber grafting process, and the second reactor is used as a reactor for the phase inversion process.

[0066] The reaction mixture in the first reactor includes: (1) rubber solution: styrene 70%, acrylonitrile 25%, butadiene rubber 5% (relative to the percentage of rubber solution). The cis-structure content in the butadiene rubber used is 35%, and the 1,2-structure content is 30%; (2) tert-butyl peroxypivalate 0.01%; (3) α-methylstyrene dimer 0.1%; (4) 30% toluene (relative to the percentage of rubber solution).

[0067] Add mercaptan 0.1% to the second reactor.

[0068] Production Process:

[0069] (1) Rubber grafting process: rubber solution is joined in the first reactor and carries out grafting reaction, and reaction temperature is 85 ℃, and the dry matter content of the reaction mixture in the control described first reactor is 18wt%,

[0070] (2) Phase transit...

Embodiment 3

[0075] Both the first and second reactors are CSTR reactors, the first reactor is used as a reactor for the rubber grafting process, and the second reactor is used as a reactor for the phase inversion process.

[0076] The reaction mixture in the first reactor includes: (1) rubber solution: styrene 66%, acrylonitrile 21%, styrene-butadiene rubber 13% (relative to the percentage of the rubber solution). Butadiene content is 60% in the styrene-butadiene rubber used, and styrene content is 40%; (2) tert-butyl peroxypivalate 0.02%; (3) α-methylstyrene dimer 0.01%; ( 4) Ethylbenzene 20% (relative to the percentage of the rubber solution); (5) The third monomer itaconate acrylate 5%.

[0077] Add mercaptan 0.2% to the second reactor.

[0078] Production Process:

[0079] (1) Rubber grafting process: the rubber solution is added into the first reactor to carry out grafting reaction, the reaction temperature is 75°C, and the dry matter content of the reaction mixture in the first re...

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Abstract

The invention discloses a bulk polymerization production process of ABS (Acrylonitrile Butadiene Styrene) resin. The bulk polymerization production process comprises a rubber grafting process, a phase transition process, a post polymerization process, a vacuum flash evaporation devolatilization process and a rubber particle crosslinking process, wherein the grafting process can be performed in a static mixing reactor; the post polymerization process can be performed in the static mixing reactor; the void volume of the static mixing reactor is below 90 percent; the unit volume heat transfer area of the static mixing reactor is over 40 m<2> / m<3>; and the flow speed of a void tower of the static mixing reactor is over 0.6 mm / s. The invention further discloses application of the static mixer to bulk polymerization of the ABS resin. Due to the combination of the process conditions, the static mixing reactor is successfully applied to bulk polymerization of the ABS resin, the energy consumption is lowered greatly, the phenomenon of blockage of the reactor with polymers is avoided, the phenomenon of repeated parking is avoided, continuous production is realized, the production transformation ratio is up to 80-90 percent, and the investment and production cost are reduced remarkably.

Description

technical field [0001] The present invention relates to a bulk polymerization production process of ABS resin, in particular to a bulk polymerization production process using a non-stirring static mixer with heat transfer elements as a polymerization reactor for ABS resin production and the use of the static mixer . Background technique [0002] ABS resin refers to acrylonitrile-styrene-butadiene copolymer (the acronym of Acrylonitrile Butadiene Styrene respectively) is a thermoplastic polymer material with high strength, good toughness and easy processing. Because of its high strength, corrosion resistance, and high temperature resistance, it is often used to make plastic casings for instruments. [0003] The existing bulk polymerization production process of ABS resin uses two kinds of reactors in its polymerization reactor: including continuous fully mixed flow reactor (CSTR for short) or plug flow reactor with stirring (stir-PFR for short). In the bulk polymerization p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F279/04C08F2/01
Inventor 伍登熙包季欣许长军黄瑞华唐来安许家福肖明宇卢光朗顾明兰邹中华陈惠国王勤获
Owner 上海华谊工程有限公司
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