Method of terminating polymerization reaction containing conjugated diolefin polymer

A technology of conjugated diene and polymerization reaction, which is applied in the field of terminating the polymerization reaction of polymers containing conjugated diene, which can solve the problems of affecting product quality, inability to terminate the reaction, poor compatibility, etc., and achieve macromolecule and gel Low content, excellent product performance, and the effect of reducing gel content

Inactive Publication Date: 2007-02-28
CHINA PETROCHEMICAL CORP +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the monomer completes the reaction of the predetermined time in the reactor, the material is transported from the reactor to the glue storage tank by power through the premixer and the static mixer, and the substances (such as water, alcohols such as Ethanol etc.) is added in the polymer solution, carries out termination reaction, adopts water or alcoholic substance as terminator, because water and alcoholic substance are polar substances, the miscibility with non-polar polymeric solution is not good, The reaction cannot be completely terminated, resulting in a certain amount of macromolecular polymers or even gels in the product, which seriously affects the product quality

Method used

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  • Method of terminating polymerization reaction containing conjugated diolefin polymer

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Embodiment Construction

[0028] Example 1 Preparation of linear thermoplastic elastomer SBS with 264 as terminator

[0029] Add the measured solvent cyclohexane 28000kg, monomer styrene 1000kg, activator tetrahydrofuran 2.8kg into a clean polymerization kettle, when the temperature is raised to 40~50℃, add 60mol of initiator n-butyllithium, and carry out a reaction for about 30min. ; Add 3000kg monomer butadiene, control the reaction temperature to be less than 110 ℃ for two-stage reaction; after the reaction is complete, add 1000kg styrene, and carry out three-stage reaction for about 30 minutes; add the metered terminator 2,6-di-tert-butyl 4-methylphenol, react for more than 1 min to terminate the polymerization reaction; discharge the material, and then add antioxidant until its total weight reaches 0.6±0.1% of the total weight of the monomer, and the resulting polymer solution undergoes coagulation, drying and other processes Afterwards, the composition and physical property data of the tested product...

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Abstract

The invention discloses a method to terminate polymerization reaction of polymer with conjugated olefin, which is characterized by the following: the polymer with conjugated olefin is polybutadiene rubber, poly-emulsion butadiene styrene rubber, poly-solution butadiene styrene rubber,styrene thermo plasticity elastic body SBS, SIS, SEBS, SEPS, isoprene rubber, low cis-form polybutadiene rubber, K-pitch; adding phenols material being measured into autoclave as terminal catalyst; stirring fully; reacting at least 1min.

Description

Technical field [0001] The invention relates to a method for terminating the polymerization reaction of a polymer containing a conjugated diene. Background technique [0002] Among the existing polymers containing conjugated dienes (such as 1,3-butadiene, isoprene, etc.), styrene, butadiene or isoprene are mainly used as monomers, and cyclic Hexane is the solvent system, alkyl lithium is the initiation system, and styrene thermoplastic elastomers (such as SBS, SEBS, SIS, SEPS, K-resin, etc.) formed by anionic solution polymerization; and with butadiene or isoprene Diene is a monomer, polycis-butadiene rubber formed by coordination polymerization, namely butadiene rubber, abbreviated as BR; or polyisoprene rubber, abbreviated as IR. In the industrial production of these polymers, there is a common feature that the polymerization reaction can proceed without restriction. In order to prepare polymers with practical uses, it is necessary to terminate the polymerization reaction at an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F36/04C08F2/38
Inventor 张红星易严德戴立平康铮胡选哲贺卉昌
Owner CHINA PETROCHEMICAL CORP
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