Phenol free stabilization of polyethylene
US9963561B2 · kind B2 · utility
5Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2016 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Nov 16, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/019
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention provides a process for the stabilization of thermoplastic polyolefins during melt processing operations. The stabilizer package of this invention is “phenol free” and comprises at least two selected phosphite stabilizers. In some embodiments, the process is suitable for the manufacture of polyethylene film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.