Process for the preparation of heat-stable olefin polymers
US5045577A · kind A · utility
12Cited by
6References
14Claims
0Family size
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Key dates
| Filing date | Jun 21, 1989 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Jun 21, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The addition of hindered amines in combination with a phosphorus-III-ester to the polymerization of olefins on spherical Ziegler-Natta catalysts effects a thermo-oxidative stabilization of the prepared polymers. Phenolic antioxidants may be used additionally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.