Metallocene-Catalyzed Polyethylene
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Abstract
A metallocene-catalyzed polyethylene resin having a multimodal molecular weight and composition distribution, comprising from 45% by weight to 75% by weight of a low density fraction, said fraction having a density below or equal to 918 g/cm3 as measured following the method of standard test ISO 1183 at a temperature of 23° C.,
- wherein the density of the polyethylene resin is from 0.920 to 0.945 g/cm3,
- wherein the Mw/Mn of the polyethylene is of from 2.8 to 6,
- wherein the melt index MI2 of the polyethylene resin of from 0.1 to 5 g/10 min measured following the method of standard test ISO 1133 Condition D at a temperature of 190° C. and under a load of 2.16 kg; and
- wherein the composition distribution breadth index (CDBI) of the polyethylene resin is below 70%, as analyzed by quench TREF (temperature rising elution fractionation) analysis.
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Citations
36 Claims
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1-18. -18. (canceled)
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19. A metallocene-catalyzed polyethylene resin having a multimodal molecular weight distribution, comprising:
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from 45% by weight to 75% by weight of a low density fraction, said low density fraction having a density below or equal to 0.918 g/cm3 as measured following the method of standard test ISO 1183 at a temperature of 23°
C.;wherein the density of the polyethylene resin is from 0.920 to 0.945 g/cm3; wherein the Mw/Mn of the polyethylene resin is of from 2.8 to 6; wherein the melt index MI2 of the polyethylene resin of from 0.1 to 5 g/10 min as measured following the method of standard test ISO 1133 Condition D at a temperature of 190°
C. and under a load of 2.16 kg; andwherein the composition distribution breadth index (CDBI) of the polyethylene resin is below 70%, as analyzed by quench TREF (temperature rising elution fractionation) analysis. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification