Process for producing modified ultrahigh-molecular-weight...

Details Process for producing modified ultrahigh-molecular-weight... Process for producing modified ultrahigh-molecular-weight...

C - Chemistry, Metallurgy

08

F

400/4048

C08F 255/10 (2006.01) C08F 2/02 (2006.01) C08F 255/00 (2006.01) C08L 23/00 (2006.01)

Patent

CA 1325300

PROCESS FOR PRODUCING MODIFIED ULTRAHIGH- MOLECULAR-WEIGHT POLYOLEFINS Abstract of the Disclosure Disclosed is a process for producing a modified ultrahigh-molecular-weight polyolefin composition, which comprises mixing a powder of an ultrahigh-molecular- weight polyolefin (A) having an intrinsic viscosity of at least 5 dl/g, a flowability improver (B) having a melting point lower than the melting point of the ultrahigh-molecular-weight polyolefin (A), a monomer (C) having an olefinically unsaturated bond and a radical initiator (D) with stirring at the melting point of the flowability improver (B) or a higher temperature but below the melting point of the ultrahigh-molecular- weight polyolefin (A), and then melt-kneading them at the melting point of the ultrahigh-molecular-weight polyolefin (A) or a higher temperature to react the monomer (C) with the ultrahigh-molecular-weight polyolefin (A).

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