METHOD FOR PRODUCING ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE PARTICLE AND MOLDED PRODUCT USING THE ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE PARTICLE

METHOD FOR PRODUCING ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE PARTICLE AND MOLDED PRODUCT USING THE ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE PARTICLE

PROBLEM TO BE SOLVED: To provide ultra high molecular weight polyethylene particles having high bulk density and good flowability and hardly causing entanglement of polymer chains in a molding method such as a solid state drawing method using the polymer particles.SOLUTION: In the ultrahigh molecula...

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Bibliographische Detailangaben
Hauptverfasser: TAKEYAMA HIDENOBU, HASEBE KOICHI, FUJIWARA AKIO, TSUCHIYA TORU
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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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Zusammenfassung:PROBLEM TO BE SOLVED: To provide ultra high molecular weight polyethylene particles having high bulk density and good flowability and hardly causing entanglement of polymer chains in a molding method such as a solid state drawing method using the polymer particles.SOLUTION: In the ultrahigh molecular weight polyethylene particles: (1) intrinsic viscosity [η] is 10-35 dL/g; (2) bulk density is 0.35-0.48 g/cm; (3) 50 g of particles fall through a specific funnel in 20-60 seconds; and (4) a polyethylene constituent [a] with intrinsic viscosity [η] of 10-15 dL/g and the molecular weight lower than that of the ultrahigh molecular weight polyethylene particles is contained.