Halogenated organoaluminum compounds and method of preparation
US4103079A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1976 |
| Grant date | Jul 25, 1978 |
| Priority date | — |
| Expiry date | Nov 1, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel halogenated organoaluminum catalysts are prepared by prereacting a material of the formula: EQU R.sub.m AlX.sub.3-m Wherein m is an integer of from 1 to 3 inclusive, R is the same or different alkyl radical of straight or branched chain structure of from 1 to 7 carbons and X is the same or different halogen selected from the group consisting of chlorine and bromine with Y moles of halogen, halogen acid, mixed halogen or organo-halide per mole of aluminum compound wherein the halogen is selected from the group consisting of chlorine and bromine and the organo group is an alkyl group of straight or branched chain structure of from 2 to 20 carbon atoms, an allylic group of 3-20 carbon atoms or a benzylic group of 7-20 carbon atoms, the quantity (Y) being selected such that (m-Y) is from less than 0.7 to about 0.2. The materials must be prepared sufficiently prior to use to insure extensive reaction of the components to yield an effective polymerization catalyst. Preferably, the components are prereacted for at least 2 minutes, more preferably, at least 10 minutes, most preferably at least 4 hours, i.e. (overnight). The catalyst is prepared at any temperature insuring liquid cond…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.