Process for preparing solid titanium trichloride useful for the polymerization of an .alpha.-olefin
US4534953A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1983 |
| Grant date | Aug 13, 1985 |
| Priority date | — |
| Expiry date | Jun 29, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing solid titanium trichloride useful for the polymerization of an .alpha.-olefin, which comprises precipitating violet-colored fine solid particles of titanium trichloride at a temperature of not higher than 150.degree. C. from a liquid of titanium trichloride liquefied in the presence of an ether, characterized in that after the amount of the precipitated violet-colored fine solid particles of titanium trichloride reaches at least 80% based on the total amount of titanium trichloride in the system, titanium tetrachloride is added in an amount within a molar ratio of from 0.2 to 10 based on the total amount of titanium trichloride in the system, followed by aging at a temperature of from 60.degree. to 120.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.