Process for hydrogenation of acrylonitrile-butadiene rubber

Process for hydrogenation of acrylonitrile-butadiene rubber

A C-C double-bond selective hydrogenation process for nitrile rubber (NBR) features higher efficiency of catalyst, low consumption of catalyst, and hydrogenating NBR well at lower temp. Its reaction conditions are as follows: hydrogen pressure is 6-15MPa; hydrogenating temp is 70-100 deg. C; the amo...

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Bibliographische Detailangaben
Hauptverfasser: ANCHENG PAN, ZHICAI LIU, CAIYUN CHEN
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:A C-C double-bond selective hydrogenation process for nitrile rubber (NBR) features higher efficiency of catalyst, low consumption of catalyst, and hydrogenating NBR well at lower temp. Its reaction conditions are as follows: hydrogen pressure is 6-15MPa; hydrogenating temp is 70-100 deg. C; the amount of used catalyst is 0.05-0.025% (based on dry rubber); and the amount of used triphenylphosphine is 0.5-2% (based on dry rubber). The hydrogenated degree of product is at least 90%, so the product has excellent properties.