METHOD FOR PRODUCING NITRILE RUBBER
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United States of America Patent
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Issued Date -
Mar 23, 2023
app pub date -
Feb 4, 2021
filing date -
Feb 28, 2020
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Abstract
A method for producing a nitrile rubber, includes recovering a nitrile rubber from a latex of nitrile rubber by continuously feeding the latex of nitrile rubber and a coagulant into an extruder including a screw disposed inside a barrel to be rotatably driven, wherein the latex of nitrile rubber fed into the extruder contains 0.1 to 3 parts by weight of a hindered phenol-based antiaging agent having a molecular weight of 300 to 3000 relative to 100 parts by weight of the nitrile rubber.
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