Hydrogen bromide-vulcanized nitrile rubber raw material composition, hydrogen bromide-vulcanized nitrile rubber, and method for producing the same

By introducing bromine atoms, hydroxyl groups, ether groups, and long-chain alkyl groups into the molecular chain of hydrogenated nitrile butadiene rubber, the complexity of existing brominated hydrogenated nitrile butadiene rubber preparation methods has been solved, and the low-temperature resistance and vulcanization speed have been improved, making it suitable for oil well exploration operations in extremely cold weather.

CN122103469APending Publication Date: 2026-05-29PETROCHINA SHANGHAI ADVANCED MATERIALS RESEARCH INSTITUTE CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PETROCHINA SHANGHAI ADVANCED MATERIALS RESEARCH INSTITUTE CO LTD
Filing Date
2024-11-29
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing methods for preparing hydrogenated nitrile butadiene rubber involve numerous steps, are difficult to operate, have complex product quality control, and are costly. They also make it difficult to improve low-temperature resistance and vulcanization speed without compromising the good mechanical properties and oil resistance of hydrogenated nitrile butadiene rubber.

Method used

A specific composition of brominated hydrogenated nitrile butadiene rubber raw material, including acrylonitrile, butadiene monomer and functionalized monomer, is used. Bromine atoms, hydroxyl groups, ether groups and long-chain alkyl groups are introduced into the molecular chain of hydrogenated nitrile butadiene rubber through polymerization and hydrogenation reactions. By utilizing the accumulation effect and polar effect of macromolecules, the glass transition temperature is reduced and the oil resistance and vulcanization speed are improved.

Benefits of technology

It achieves low-temperature resistance and oil resistance in oil well exploration operations under extreme cold weather, reduces gel formation, improves polymerization process stability and product quality, and shortens vulcanization time, making it suitable for industrial production.

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Abstract

The present application provides a hydrogen bromide hydrogenated nitrile rubber raw material composition, hydrogen bromide hydrogenated nitrile rubber and a preparation method thereof. The hydrogen bromide hydrogenated nitrile rubber raw material composition comprises a first component and a second component; the first component comprises acrylonitrile and butadiene monomers; and the second component comprises a functional monomer. The functional monomer can introduce bromine atoms, hydroxyl groups, ether groups and long-chain alkyl groups into the molecular chain of the hydrogenated nitrile rubber in a macromolecular form, so that the hydrogen bromide hydrogenated nitrile rubber obtained by polymerization has good low-temperature resistance and vulcanization speed.
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