Invention Grant
- Patent Title: Manufacturing ethylene interpolymer products at higher production rate
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Application No.: US15805287Application Date: 2017-11-07
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Publication No.: US10683376B2Publication Date: 2020-06-16
- Inventor: Niousha Kazemi , Monika Kleczek , Vinod Konaganti , Bronwyn Gillon , Shivendra Kumar Goyal , Fazle Sibtain , Sepideh Kasiri , Stephen Salomons , Kenneth Edward Taylor , Mehdi Keshtkar
- Applicant: NOVA Chemicals (International) S.A.
- Applicant Address: CH Fribourg
- Assignee: NOVA Chemicals (International) S.A.
- Current Assignee: NOVA Chemicals (International) S.A.
- Current Assignee Address: CH Fribourg
- Agent Thomas J. Styslinger
- Main IPC: C08F4/6592
- IPC: C08F4/6592 ; C08F210/16 ; C08J5/18 ; B32B27/08 ; B32B27/32 ; C08F4/659

Abstract:
This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered.
Public/Granted literature
- US20190135959A1 MANUFACTURING ETHYLENE INTERPOLYMER PRODUCTS AT HIGHER PRODUCTION RATE Public/Granted day:2019-05-09
Information query
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