Phenol free stabilization of polyethylene film
US7361703B2 · kind B2 · utility
10Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2005 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Jun 8, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/014
- 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 must contain at least one aryl monophosphite and at least one diphosphite. The process of this invention is especially suitable for the manufacture of polyethylene film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.