WO2025172887 - SOLUTION PHASE POLYMERIZATION PROCESS
National phase entry is expected:
Publication Number
WO/2025/172887
Publication Date
21.08.2025
International Application No.
PCT/IB2025/051551
International Filing Date
13.02.2025
Title **
[English]
SOLUTION PHASE POLYMERIZATION PROCESS
[French]
PROCÉDÉ DE POLYMÉRISATION EN PHASE SOLUTION
Applicants **
NOVA CHEMICALS (INTERNATIONAL) S.A.
Inventors
MOLLOY, Brian
MORRISON, Darryl
Priority Data
63/554,613
16.02.2024
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
| * | |
| Number of Office Actions | * |
| * | |
International Searching Authority |
EPO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
* |
| * | |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Patent Delivery |
Send the Letters Patent by Courier
* |
| Translation |
|
* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2797 | |
| EPO | Filing, Examination, Granting | 11140 | |
| Japan | Filing, Examination, Granting | 2171 | |
| South Korea | Filing, Examination, Granting | 2044 | |
| USA | Filing, Examination, Granting | 5190 |
Total:
23,342
Contact Us
Abstract[English]
A solution phase polymerization process comprises feeding two single site polymerization catalysts, a bridged phosphinimine catalyst and an unbridged phosphinimine catalyst, to a polymerization reactor along with ethylene and optionally one or more than one alpha-olefin to make a polyethylene composition comprising a first polyethylene component and a second polyethylene component. The first and second polyethylene components are produced by the bridged phosphinimine catalyst and the unbridged phosphinimine catalyst respectively and depending on the polymerization conditions may have divergent molecular weights and short chain branching contents (where short chain branching occurs if one or more than one alpha-olefin is fed to the reactor along with ethylene).[French]
Un procédé de polymérisation en phase solution consiste à introduire deux catalyseurs de polymérisation à site unique, un catalyseur de phosphinimine ponté et un catalyseur de phosphinimine non ponté, dans un réacteur de polymérisation conjointement avec de l'éthylène et éventuellement une ou plusieurs alpha-oléfines pour fabriquer une composition de polyéthylène comprenant un premier composant de polyéthylène et un second composant de polyéthylène. Les premier et second composants de polyéthylène sont produits par le catalyseur de phosphinimine ponté et le catalyseur de phosphinimine non ponté respectivement et en fonction des conditions de polymérisation peuvent avoir des poids moléculaires divergents et des contenus de ramification de chaîne courte (une ramification de chaîne courte se produisant si une ou plusieurs alpha-oléfines sont introduites dans le réacteur conjointement avec de l'éthylène).