Processes to form ethylene-based polymers using asymmetrical polyenes
US10005863B2 · kind B2 · utility
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Key dates
| Filing date | Jul 11, 2017 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Jul 11, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process to form an ethylene-based polymer including polymerizing ethylene and at least one asymmetrical polyene comprising an “alpha, beta unsaturated-carbonyl end” (“α,β unsaturated-carbonyl end”) and a “C—C double bond end,” wherein the polymerization takes place in the presence of at least one free-radical initiator; and wherein the polymerization takes place in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≥2), wherein reaction zone i is downstream from reaction zone 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.