Integrated process for producing propylene polymers and copolymers with reduced greenhouse gas emission
US11242419B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2020 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Sep 9, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A substantially zero-carbon-emission (ZCE) process for making propylene polymers and copolymers including: converting alkanes to the olefin monomers ethylene, propylene, and butene or combinations thereof, using renewable electric power and scrubbing the stack gases from any fired heaters or boilers to remove carbon dioxide, in an oxidative-coupling of methane plant including the steps of passing alkanes through an ethylene plant while adding oxygen, passing a portion of the polymerization grade ethylene through a 2-butene plant, and passing the 2-butene stream and a portion of the polymerization grade ethylene stream through a propylene plant. The polymerization grade propylene is polymerized to produce isotactic homopolymer polypropylene, or ethylene-propylene random copolymer, or impact grade polypropylene containing ethylene-propylene rubber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.