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Liquid-phase bulk continuous polymerization method of 1-butene and poly-1-butene

A liquid phase bulk, polymerization method technology, applied in the field of olefin polymerization, can solve the problems of low polymerization activity, difficult transportation, sticky polymerization system, etc., and achieves the effect of simple polymerization process, flexible and convenient operation, and optimized process

Pending Publication Date: 2020-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to provide a 1-butene liquid phase that can obtain poly-1-butene with good particle shape, high isotactic index, and low VOC content, and can solve the problems of low polymerization activity, sticky polymerization system, and difficult transportation. Bulk continuous polymerization method and poly-1-butene obtained by the method

Method used

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  • Liquid-phase bulk continuous polymerization method of 1-butene and poly-1-butene
  • Liquid-phase bulk continuous polymerization method of 1-butene and poly-1-butene
  • Liquid-phase bulk continuous polymerization method of 1-butene and poly-1-butene

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Embodiment 1

[0057] Such as figure 1 Shown, the main catalyst (MgCl 2 / TiCl 4 Supported Ziegler-Natta catalyst), co-catalyst (triethylaluminum) and external electron donor (dicyclopentyldimethoxysilane) in the pre-complexation tank R100 after 6 ℃, 8min pre-complexation The catalyst slurry is continuously fed into the liquid phase reactor IR101, the flow rate of triethylaluminum (TEA) is 6.33g / hr, the flow rate of dicyclopentyldimethoxysilane (DCPMS) is 0.3g / hr, and the flow rate of the main catalyst is 0.6 g / hr with a TEA / DCPMS ratio of 50 (mol / mol).

[0058] In this example, a liquid phase reactor IR101 and a liquid phase reactor IIR102 connected in series are used for olefin polymerization. The catalyst slurry and 1-butene are continuously introduced into the liquid phase reactor IR101 for the first olefin polymerization reaction, and the obtained first olefin polymerization reaction product and 1-butene are continuously introduced into the liquid phase reactor IIR102 for the second o...

Embodiment 2

[0060] The catalyst used in embodiment 2, pre-complexation, polymerization process conditions and auxiliary agent formula and add-on are the same as embodiment 1. The difference from Example 1 is that the surfactant is replaced by the same volume of oleyl ether, and the analysis results of the obtained polymer powder are shown in Table 1.

Embodiment 3

[0062] The catalyst used in embodiment 3, pre-complexation, polymerization process conditions and auxiliary agent formula and addition are the same as embodiment 1. The difference from Example 1 is that the surfactant is replaced by the same volume of cocamidopropyl betaine, and the analysis results of the obtained polymer powder are shown in Table 1.

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Abstract

The invention belongs to the field of olefin polymerization, and particularly relates to a 1-butene liquid-phase bulk continuous polymerization method and poly-1-butene. The 1-butene liquid-phase bulkcontinuous polymerization method comprises the following steps: carrying out a double-kettle continuous polymerization reaction on 1-butene, emulsifying the finally obtained polymerization reaction product by using a surfactant and hot water, and separating poly-1-butene from the obtained emulsion. By adopting the method provided by the invention, the poly-1-butene with good particle morphology,high isotactic index and low VOC content can be obtained, and the problems that the polymerization activity is not high, a polymerization system is sticky and the transportation is difficult can be solved.

Description

technical field [0001] The invention belongs to the field of olefin polymerization, and more specifically relates to a liquid-phase bulk continuous polymerization method of 1-butene and poly-1-butene. Background technique [0002] Poly-1-butene products mainly include homopolymers and random copolymers. Among them, high isotactic poly-1-butene (isotactic index higher than 96%) has excellent creep resistance, environmental stress cracking resistance and impact resistance, which is superior to polyethylene and enjoys the reputation of "plastic gold", so it is very Suitable for pipes, such as water supply pipes, hot water pipes, industrial pipes and building pipes, etc. The 1-butene random copolymer (the comonomer is mainly ethylene) has excellent easy-to-tear performance, is suitable for the production of film products, and has been applied in the fields of food and hygiene product packaging. [0003] The preparation methods of poly-1-butene mainly include gas phase method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/08C08F2/02C08F2/01C08F6/28
CPCC08F110/08C08F6/001C08F6/02C08F2500/12C08F2500/18C08F2500/15C08F2/02C08F2/01C08L23/20
Inventor 斯维毕福勇宋文波陈明胡慧杰
Owner CHINA PETROLEUM & CHEM CORP
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