Polybutadiene, preparation and use thereof

The optimized preparation of polybutadiene using a catalyst system of cobalt compounds, organoaluminum compounds, and organophosphorus compounds solves the safety risks and low production efficiency problems of existing technologies, achieving efficient and safe preparation of polybutadiene, which is suitable for rubber, synthetic rubber, and adhesives.

CN122444905APending Publication Date: 2026-07-24EVONIK OPERATIONS GMBH
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Patent Information

Application Number
CN202610696411.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2017-01-16
Filing Date
2018-01-16
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies for preparing high vinyl content liquid polybutadiene suffer from safety risks, low space-time yield, low production efficiency, and poor economic viability.

Method used

A cobalt compound, organoaluminum compound, and organophosphorus compound catalyst system was used to carry out the polymerization reaction by controlling the reaction conditions and metering the addition of 1,3-butadiene. The solvent ratio, pressure, and temperature were optimized to achieve efficient preparation of polybutadiene.

Benefits of technology

It achieves safer and more efficient preparation of polybutadiene, improves space-time yield, and reduces energy and resource consumption. The product is liquid at 20°C with moderate viscosity, making it easy to process and apply.

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Abstract

The present invention relates to a polybutadiene comprising a proportion of 25 to 75 mol% of monomer units having a vinyl double bond derived from 1, 3-butadiene, a proportion of 0 to 10 mol% of monomer units having a trans double bond derived from 1, 3-butadiene, and a proportion of 25 to 75 mol% of monomer units having a cis double bond derived from 1, 3-butadiene, wherein all of the monomer units (A), (B) and (C) add up to 100 mol%, and which is characterized in that the number average molar mass of the polybutadiene is 1000 to 3000 g / mol. The invention also relates to a method for preparing the polybutadiene according to the invention, to the use of the polybutadiene, and to a composition comprising the polybutadiene according to the invention.
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