Functional polyolefin polymers and manufacture thereof
US12286496B2 · kind B2 · utility
0Cited by
7References
20Claims
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Key dates
| Filing date | Oct 12, 2023 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Oct 27, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyolefins having the same or different functional groups covalently bound to the polyolefin, such as polyolefins having hindered phenol groups bound thereto, can be prepared by from a maleic anhydride modified polyolefin, with or without a coupling agent, and a hindered phenol reagent under heat, e.g., by heating the components to at least about 170° C., such as by reactive extrusion. A polyolefin having hindered phenol groups can be added to the components as a stabilizer prior to or during reacting the components together under heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.