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Reaction device and method for preparing styrene-based alternating copolymer microspheres

A technology of alternating copolymerization and reaction devices, which is applied in chemical instruments and methods, microsphere preparation, chemical/physical/physicochemical fixed reactors, etc., can solve the problems of undisclosed reaction devices and reaction methods, and achieve removal, The effect of increasing the conversion rate

Active Publication Date: 2021-12-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Aiming at obtaining a reaction product with specific properties through the precipitation polymerization reaction of maleic anhydride and α-methylstyrene, there is no relevant reaction device and reaction method disclosed in the prior art

Method used

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  • Reaction device and method for preparing styrene-based alternating copolymer microspheres

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] use as figure 1 The reaction apparatus shown for the preparation of styrenic alternating copolymer microspheres was carried out. The reaction device includes a reactor 1 and a centrifuge (not shown in the figure) connected in sequence.

[0086] The reactor 1 comprises: a horizontally arranged reactor shell 101 with a circular cross-section,

[0087] Two guide baffles 110, which are vertically arranged inside the reactor shell 101, divide the inside of the reactor shell 101 into a heat exchange chamber 112 between them and the first reaction chamber 111 and the second reaction chamber on both sides. reaction chamber 113,

[0088] 8 hollow guide tubes 105, the length is 70% of the length of the reactor shell 101, and the diameter is 50 cm, which are evenly arranged and horizontally arranged between the two guide baffles 110, and the openings at both ends are respectively opened In the first reaction chamber 111 and the second reaction chamber 113,

[0089] A baffle baff...

Embodiment 2

[0100] Carry out according to the method for embodiment 1, difference is:

[0101] The organic reaction solution is composed of 10.1kg α-methylstyrene, 11kg maleic anhydride, 1.2kg azobisisobutyronitrile, 1.3kg divinylbenzene and 100L isoamyl acetate;

[0102] The copolymerization reaction temperature is 80°C, the first copolymerization reaction time is 3h, and the second copolymerization reaction time is 2h;

[0103] The reaction product was centrifuged at 4000rpm for 20min,

[0104] Thus, solid copolymer particle powder B was prepared.

Embodiment 3

[0106] Carry out according to the method for embodiment 1, difference is:

[0107] The organic reaction solution is composed of 5kg α-methylstyrene, 5kg maleic anhydride, 0.6kg azobisisobutyronitrile, 0.65kg divinylbenzene and 100L isoamyl acetate;

[0108] The copolymerization reaction temperature is 90°C, the first copolymerization reaction time is 3h, and the second copolymerization reaction time is 4h;

[0109] The reaction product was centrifuged at 4000rpm for 20min,

[0110] Thus, solid copolymer particle powder C was prepared.

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Abstract

The invention relates to the field of polymerization reaction, and discloses a reaction device for preparing styrene-based alternating copolymerization microspheres and a method for preparing styrene-based alternating copolymerization microspheres. The reaction device includes a reactor (1); the reactor (1) includes a reactor shell (101), two flow guide baffles (110), a plurality of hollow flow guide tubes (105), and a deflector plate (109), a first material inlet (102), a second material inlet (104), a material outlet (103), and a material channel 108, wherein the second material inlet (104) is located at the 40-60% of the total length of the material channel (108). The reaction device and method of the invention can improve the conversion rate of the reaction and control the morphology of the styrene-based alternating copolymerized microspheres.

Description

technical field [0001] The invention relates to the field of polymerization reaction, in particular to a reaction device for preparing styrene-based alternating copolymerized microspheres and a method for preparing styrene-based alternating copolymerized microspheres. Background technique [0002] The production of polymers generally includes units such as raw material treatment, catalyst unit, polymerization, separation, and recycling. Among these many units, the polymerization unit is the core and important unit. The polymerization unit directly determines the operation of the polymerization reaction and the resulting polymerization. the quality of the product. [0003] Different from the reaction of small molecules, the polymerization reaction has its own particularity, such as the increase of viscosity during the reaction process, and the reaction process is accompanied by relatively strong exotherm. Generally, the polymerization reactor should meet the following univer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/01C08F212/12C08F222/06C08F212/36B01J13/14B01J19/24
CPCC08F2/01C08F212/12C08F222/06B01J13/14B01J19/2415C08F212/36
Inventor 张洁刘振杰宋文波袁浩
Owner CHINA PETROLEUM & CHEM CORP
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