Means For Increasing the Molecular Weight and Decreasing the Density of Ethylene Interpolymers Employing Mixed Homogeneous Catalyst Formulations

• Main Authors: Zoricak, Peter, VanAsseldonk, Lawrence, Keshtkar, Mehdi, Kazemi, Niousha, Wang, Qinyan, Taylor, Kenneth, Dobbin, Christopher, Sibtain, Fazle, Khakdaman, Hamidreza, Zhang, Zengrong, Carter, Charles, Wang, XiaoChuan, Molloy, Brian, Kleczek, Monika, Salomons, Stephen
• Format: Patent
• Language: English
• Published: 25.10.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

A continuous solution polymerization process is disclosed wherein at least two homogeneous catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a second homogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to the third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to the third homogeneous catalyst formulation.