Stabilization of mixed catalyst polyethylene
US10563045B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Dec 21, 2017 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Mar 2, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present disclosure relates to systems including a ternary stabilization package that contains a first phosphite, a second phosphite and a primary antioxidant is used in combination with a polyethylene that is polymerized with a mixed catalyst system that contains two different types of catalysts. In some embodiments the stabilized polyethylene exhibits improved color performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.