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Method for preparing heat-resistant bulk ABS resin

An ABS resin, heat-resistant technology, applied in the field of preparing heat-resistant bulk ABS resin, can solve the problems of poor system stability, high requirements for explosion, mass transfer, and heat transfer, and achieve excellent impact resistance, narrow molecular weight distribution, and processing performance. excellent effect

Inactive Publication Date: 2016-04-13
NORTH HUAJIN CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, multi-stage tubular plug-flow reactors in series require high mass transfer and heat transfer requirements, large process fluctuations in reactors at all levels, poor system stability, and problems such as detonation.
[0008] The present invention attempts to find a way to solve the problems of the current multi-stage series parallel plug-flow tube reactor, high requirements for mass transfer and heat transfer, and poor stability of the reaction system. Add NPMI and add acrylonitrile after the phase transition to better realize NPMI to improve the heat resistance of the polymer and make the product have good compatibility

Method used

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  • Method for preparing heat-resistant bulk ABS resin
  • Method for preparing heat-resistant bulk ABS resin
  • Method for preparing heat-resistant bulk ABS resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 As shown, in the first plug flow reactor R1 and the second plug flow reactor R2, the rubber continuous phase undergoes grafting reaction and forms a phase transition. The mass percentages of each component in the raw material liquid entering the reaction system are: styrene 56.6%, butadiene rubber and styrene-butadiene rubber composite toughening agent 8.4%, acrylonitrile 14%, ethylbenzene 14%, nitrogen phenyl maleic acid Imide 3%, butyl acrylate 3%, mineral oil 1%. The initiator concentration is 170ppm, the heat resistant agent concentration is 2100ppm, the acrylonitrile concentration is 800ppm, the chain transfer agent concentration is 2500ppm, the antioxidant concentration is 1600ppm, and the silicone oil concentration is 800ppm.

[0025] The temperature of the first plug flow reactor R1 is set to be 92.3°C, 94.5°C, and 97.1°C in the upper, middle, and lower zones, respectively.

[0026] The temperature of the upper, middle and lower zones of the seco...

Embodiment 2

[0037] The rubber continuous phase in the first plug flow reactor R1 and the second plug flow reactor R2 undergoes a grafting reaction and forms a phase transition. The mass percent of each component in the raw material liquid entering the reaction system is: styrene 54.6%, butadiene rubber and integrated rubber composite toughening agent 9.4%, acrylonitrile 14%, ethylbenzene 15%, nitrogen phenyl maleyl Imine 3%, butyl acrylate 3%, mineral oil 1%. The initiator concentration is 260ppm, the heat resistant agent concentration is 2200ppm, the acrylonitrile concentration is 800ppm, the chain transfer agent concentration is 2900ppm, the antioxidant concentration is 1400ppm, and the silicone oil concentration is 900ppm.

[0038] The temperature of the first plug flow reactor R1 is set to be 92.3°C, 94.5°C, and 97.1°C in the upper, middle, and lower zones, respectively.

[0039] The temperature of the upper, middle and lower zones of the second plug flow reactor R2 is set to 102.1°C...

Embodiment 3

[0050] In the first plug flow reactor R1 and the second plug flow reactor R2, the rubber continuous phase undergoes grafting reaction and forms a phase transition. The mass percent of each component in the raw material liquid entering the reaction system is: 54.6% of styrene, 9.4% of styrene-butadiene rubber and integrated rubber composite toughening agent, 14% of acrylonitrile, 15% of ethylbenzene, nitrogen phenylmaleimide Amine 3%, Butyl Acrylate 3%, Mineral Oil 1%. The initiator concentration is 310ppm, the heat resistant agent concentration is 2500ppm, the acrylonitrile concentration is 800ppm, the chain transfer agent concentration is 3200ppm, the antioxidant concentration is 1800ppm, and the silicone oil concentration is 600ppm.

[0051] The temperature of the first plug flow reactor R1 is set to be 92.3°C, 94.5°C, and 97.1°C in the upper, middle, and lower zones, respectively.

[0052] The temperature of the upper, middle and lower zones of the second plug flow reactor...

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Abstract

The invention relates to a method for preparing heat-resistant bulk ABS resin. The prominent problem that the stability of the reaction technology of a multistage reactor in the common bulk ABS production technology at present is poor is mainly solved. The technological process is performed through a raw material preparing system, a polymerization reaction system and a devolatilization prilling system. The reaction system is composed of four plug flow reactors connected in series, and each plug flow reactor is internally provided with a plurality of flow guide plates, a plurality of flat-paddle shaft stirrers and a reactor conduction-oil heating and cooling system. According to the technology, azophenyl maleimide is used as a heat resistant agent, and the produced ABS resin has excellent heat resistance, excellent impact resistance and excellent processing performance.

Description

technical field [0001] The invention belongs to the field of polymer material synthesis and preparation, relates to the field of synthetic resins, in particular to a method for preparing heat-resistant bulk ABS resin Background technique [0002] ABS resin is a general-purpose engineering plastic with excellent comprehensive properties. It has low processing shrinkage and low water absorption. It is widely used in human life. At present, the development and research of ABS resin is changing with each passing day, and the research fields and directions are gradually developing towards high heat resistance, high transparency, high impact resistance, high gloss, chemical corrosion resistance and flame retardancy, such as automobile dashboards, electric water heaters, grilles, etc. ABS resin is required to have a higher heat-resistant grade. If we can increase the heat-resistant temperature of ABS resin by 15°C or 25°C, then this heat-resistant ABS resin can replace polyurethane...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/04C08F2/02C08F2/01
CPCC08F279/04C08F2/01C08F2/02
Inventor 王益波袁博李耀波吕天一周川刘万胜刘维钧吴玉祥郑建国范铁军罗闯李淑文罗颖李秀兰韩丽君王岩赵欣麟佟小倩王楠王秋熹于德峰王玉凤初小丽魏丽娟
Owner NORTH HUAJIN CHEM IND CO LTD
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