Method for producing nitrile rubber
AssigneeZeon Corporation
InventorKeisuke Kojima
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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.
Claims6
A method for producing a nitrile rubber, comprising 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 method further comprises adding a hindered phenol-based antiaging agent, having a molecular weight of 300 to 3000, in the form of an emulsion to the latex of nitrile rubber such that the latex of nitrile rubber fed into the extruder contains 0.1 to 3 parts by weight of the hindered phenol-based antiaging agent relative to 100 parts by weight of the nitrile rubber.
Dependencies are inferred from the claim text.