C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/602 (2006.01) C08F 4/642 (2006.01) C08F 10/00 (2006.01) C08F 210/16 (2006.01) C08L 23/08 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01)
Patent
CA 2040713
The present invention provides an ethylene copolymer comprising constituent units (a) derived from ethylene and constituent units (b) derived from an .alpha.-olefin having 3 to 20 carbon atoms, the ethylene copolymer being characterized in that (A) the ethylene copolymer has a density (d) of 0.86 to 0.95 g/cm3; (B) the ethylene copolymer has a MFR of 0.001 to 50 g/10 min as measured at a temperature of 190°C and a load of 2.16 kg; (C) the melt tension (MT) and MFR of the ethylene copolymer satisfy the relation log MT > -0.6610g MFR + 0.6; and (D) the temperature (T) at which the exothermic curve of the ethylene copolymer measured by a differential scanning calorimeter (DSC) shows the highest peak and the density (d) satisfy the relation T < 400d - 250.
opolymère éthylique comprenant (a) des dérivés de l'éthylène et (b) des dérivés d'une .alpha.-oléfine ayant de 3 à 20 atomes de carbone. Ce copolymère possède les caractéristiques suivantes : (A) densité (d) de 0,86 à 0,95 g/cm3/ (B) intervalle de fluage (MFR) de 0,001 à 50 g/10 min mesuré à une température de 190.degré.C et une charge de 2,16 kg; (C) tension de fluage (MT) et MFR respectant l'équation log MT > -0,6610g MFR + 0,6; et (D) la température (T) à laquelle sa courbe exothermique mesurée par analyse calorimétrique à compensation de puissance (DSC) montre la crête la plus haute et la densité (d) respectent l'équation T < 400d - 250.
Tsutsui Toshiyuki
Ueda Takashi
Yoshitsugu Ken
Mitsui Chemicals Incorporated
Smart & Biggar
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