Patent ID: 6136937
Filing Date: 2000-10-24
Classification: B29C,B29K,B32B,C08F,C08G,C08J,C08L,Y10S

Abstract:
An ethylene polymer containing less than about 20 ppm aluminum, the polymer having:a) a melt flow ratio, I.sub.10 /I.sub.2, .gtoreq.5.63,b) a molecular weight distribution, M.sub.w /M.sub.n, defined by the equation:M.sub.w /M.sub.n .ltoreq.(I.sub.10 /I.sub.2)-4.63, andc) a critical shear stress at onset of gross melt fracture greater than about 4.times.10.sup.6 dyne/cm.sup.2, andd) a single melting point as determined by differential scanning calorimetry between -30 C and 150 C.