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

A technology of alternating copolymerization and styrene series, which is applied in the field of preparation of styrene series alternating copolymerization microspheres, can solve the problems of undisclosed reaction devices and reaction methods, etc., and achieve the effect of removing and improving the conversion rate

Active Publication Date: 2022-03-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

[0066] 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.

[0067] The reactor 1 includes a horizontally arranged reactor shell 101 with a circular cross-section, a hollow spiral tube 105 arranged inside the reactor shell 101, and material first and second tubes respectively arranged at opposite ends of the reactor shell 101. An inlet 102 and a material outlet 103, the second inlet 104 for the material in the middle of the reactor housing 101 (that is, the second inlet 104 for the material is located from the first inlet 102 to the first inlet 102 for the material) 50% of the total length of the material outlet 103).

[0068] The pipe diameter of hollow spiral tube 105 is 60cm, and pitch is 30cm, and the diameter of the tube body that hollow spiral tube forms is 70% of reactor 1 inner diameter...

Embodiment 2

[0075] Carry out according to the method for embodiment 1, difference is:

[0076] The organic reaction solution is composed of 10.4kg α-methylstyrene, 15kg maleic anhydride, 1.2kg azobisisobutyronitrile, 1.3kg divinylbenzene and 100L isoamyl acetate;

[0077] The copolymerization reaction temperature is 80°C, and the copolymerization reaction time is 6h;

[0078] The reaction product was centrifuged at 4000rpm for 20min,

[0079] Thus, solid copolymer particle powder B was prepared.

Embodiment 3

[0081] Carry out according to the method for embodiment 1, difference is:

[0082] The organic reaction liquid is composed of 5.9kg α-methylstyrene, 9kg maleic anhydride, 0.6kg azobisisobutyronitrile, 0.65kg divinylbenzene, and 100L isoamyl acetate;

[0083] The copolymerization reaction temperature is 90°C, and the copolymerization reaction time is 3h;

[0084] The reaction product was centrifuged at 4000rpm for 20min,

[0085] 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), and a hollow spiral tube (105) arranged inside the reactor shell (101) is arranged on the reactor shell (101). The first material inlet (102), the second material inlet (104) and the material outlet (103) on the housing (101); the second material inlet (104) is located at the Port (102) to 40-60% of the total length of the material outlet (103). 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): B01J13/02C08F212/12C08F222/08
CPCB01J13/02C08F212/12C08F222/08
Inventor 刘振杰宋文波张洁毕福勇
Owner CHINA PETROLEUM & CHEM CORP
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