| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrahigh molecular weight ethylene based polymer having sufficient wear when used for a fiber etc., manufactured by gel spinning.SOLUTION: The ethylene based polymer has an intrinsic viscosity (&eegr;) of 9.0 dL/g or more and 20 dL/g or less, Mw of 1 million or more and 6 million or less, Mw/Mn of 3.0 or more and less than 4.0 and the ratio of a component of less than 10,000 in a molecular weight (M) which is 0.01% or less, where M represents a value obtained by converting the molecular weight (peak top) of a polystyrene (molecular weight distribution Mw/Mn<1.2) into the molecular weight of a polyethylene using a Q-factor, and a component having the same elution time as a time eluting a predetermined molecular weight in a calibration curve obtained from those elution times. |
