Ethylene-based resin and molded object obtained therefrom

Details Ethylene-based resin and molded object obtained therefrom Ethylene-based resin and molded object obtained therefrom

2006-01-31

2010-12-28

Seidleck, James (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S348000, C526S348200, C526S348600, C526S352200

Reexamination Certificate

active

07858723

ABSTRACT:
Ethylene-based resin, which exhibits a satisfactorily high melt tension and can provide a molded object excellent in mechanical strength, the ethylene-based resin characterized in simultaneously satisfying the requirements [1] to [5] described below:[1] melt flow rate (MFR) under a loading of 2.16 kg at 190° C. is in the range of 0.1 to 100 g/10 minutes;[2] density (d) is in the range of 875 to 970 kg/m3;[3] ratio [MT/η*(g/P)] of melt tension [MT(g)] at 190° C. to shearing viscosity [η*(P)] at 200° C. at an angular velocity of 1.0 rad/sec. is in the range of 1.50×10−4to 9.00×10−4;[4] sum [(A+B)(/1000C)] of the number of methyl branches [A(/1000C)] and the number of ethyl branches [B(/1000C)] per 1000 carbon atoms measured by13C-NMR is 1.8 or less; and[5] zero shear viscosity [η0(P)] at 200° C. and weight-average molecular weight (Mw) measured by GPC-viscosity detector method (GPC-VISCO) satisfy the following relational expression (Eq-1):in-line-formulae description="In-line Formulae" end="lead"?0.01×10−13×Mw3.4≦η0≦4.5×10−13×Mw3.4  (Eq-1).in-line-formulae description="In-line Formulae" end="tail"?

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