Mixed phosphite stabilization of polyethylene film
US10442900B2 · kind B2 · utility
0Cited by
7References
7Claims
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Key dates
| Filing date | Dec 18, 2017 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Apr 6, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2201/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In some embodiments, this disclosure provides a process for the stabilization of thermoplastic polyolefins during melt processing operations. In some embodiments, the stabilizer package disclosed herein is “phenol free” and contains at least one solid aryl monophosphite and a specific liquid phosphite. The processes disclosed herein are suitable for the manufacture of polyethylene film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.