Process for producing propylene polymer or copolymer
US4273905A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1979 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Jan 8, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing a propylene polymer or copolymer which comprises polymerizing (a) propylene or (b) a mixture of propylene and another unsaturated hydrocarbon monomer in liquid propylene in the presence of a catalyst system of PA0 (A) a specified titanium trichloride composition obtained by reducing titanium tetrachloride with an organoaluminum compound and activating the product; PA0 (B) an organoaluminum compound having the general formula EQU R.sub.2 AlX PA0 wherein R represents an alkyl group or an aralkyl group, each containing up to 18 carbon atoms, and X represents a halogen atom; and PA0 (C) an unsaturated carboxylic acid ester; while adjusting the amount of the polymer produced to at least 8,000 g per gram of the titanium trichloride composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.