Controlling molecular weight distribution and chemical composition distribution of a polyolefin product
US11434309B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Mar 24, 2020 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Jul 23, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2400/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method broadening a molecular weight distribution and/or broadening a chemical composition distribution of the polyolefin product can include: polymerizing a feedstock in the presence of a metallocene catalyst in a loop reactor to produce a polyolefin product, the feedstock comprising two or more monomers; and adjusting a polymerization parameter selected from the group consisting of decreasing a recycle ratio, increasing a polymer concentration, increasing a LRSU number, and any combination thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.