Enhanced heat stability polypropylene
US11780939B2 · kind B2 · utility
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18References
25Claims
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Key dates
| Filing date | Feb 20, 2020 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Nov 20, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0033
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process forming a high MFR polypropylene includes providing a reactor powder polypropylene, the reactor powder polypropylene having a melt flow rate of less than 100 dg/min. The process also includes mixing the reactor powder polypropylene with a free-radical initiator to form a powder/initiator mixture and subjecting the powder/initiator mixture to post-reactor forming. The present disclosure further provides for a vis-broken polypropylene and a polymer article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.