Patent ID: 7384691
Filing Date: 2008-06-10
Classification: D01F,D02G,D04H,Y10T

Abstract:
1. A drawn polyethylene multi-filament yarn comprising: polyethylene having an intrinsic viscosity in decalin at 135° C. of from about 5 dl/g to 45 dl/g, fewer than about two methyl groups per thousand carbon atoms, and less than about 2 wt. % of other constituents; said multi-filament yarn having a tenacity of at least 33 g/d as measured by ASTM D2256-02, and when measured by dynamic mechanical analysis on a Rheometrics Solids Analyzer RSA II in a force proportional mode in tension with the static force held at 110% of dynamic force, the dynamic strain at 0.025±0.005%, the heating rate at 2.7±0.8° C./min and a frequency in the range of from 10 to 100 radians/sec, having an integral strength of the β-dispersion of the loss modulus above a base line drawn through the wings of said β-dispersion at least 90 GPa-° C.