High density polyethylene

Details High density polyethylene High density polyethylene

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 9/12 (2006.01) C08F 210/16 (2006.01) C08J 5/18 (2006.01)

Patent

CA 2628547

Multimodal polyethylenes possessing a density from 0.940 to 0.965 g/cm3, and an I21 from 4 to 20 dg/min, and including a low molecular weight ethylene copolymer having a weight average molecular weight from 5,000 amu to 50,000 amu; and a high molecular weight ethylene copolymer having a weight average molecular weight from 60,000 amu to 800,000 amu, both components having a balance of short chain branching making the multimodal polyethylene suitable for films, pipes, rotomolding applications, and blow molding applications.

L'invention concerne des polyéthylènes multimodaux présentant une densité de 0,940 à 0,965 g/cm3, et un I21 de 4 à 20 dg/min, contenant un copolymère d'éthylène de faible poids moléculaire présentant un poids moléculaire moyen en poids de 5000 amu à 50000 amu, et un copolymère d'éthylène de poids moléculaire élevé présentant un poids moléculaire moyen en poids de 60000 amu à 800000 amu, les deux composants présentant un équilibre de ramifications à chaînes courtes destinant le polyéthylène multimodal à des pellicules, des tuyaux, des applications de rotomoulage et de moulage par soufflage.

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