Ethylene polymers made from phosphate supported chromium catalyst
US4504638A · kind A · utility
54Cited by
22References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1983 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | Nov 7, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In accordance with one embodiment of this invention, a chromium catalyst supported on an aluminum phosphate-containing base is used in conjunction with a boron component either as a part of the base or as a cocatalyst. The resulting catalyst is unique both in its favorable sensitivity to molecular weight control agents such as hydrogen and in its ability to produce a fundamentally different olefin polymer. In accordance with another embodiment of this invention, the chromium is supported on a phosphate base produced using a melt of the aluminum salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.