Olefin polymerization using chromium on an aluminum phosphate produced from a concentrated mass
US4444965A · kind A · utility
67Cited by
10References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 27, 1982 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Sep 27, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J27/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aluminum orthophosphate is prepared by combining a source of orthophosphate ions with an aluminum salt to form a concentrated mass, gelling, and thereafter converting the resulting hydrogel to a xerogel by removing water. The resulting aluminum phosphate is particularly suited for use as a base for a chromium olefin polymerization catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.