Olefine polymerization catalyst
US3940345A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1973 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Jun 4, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An olefine polymerisation catalyst includes a solid compound of a transition metal, e.g. titanium trichloride, an organo-compound of a non-transition metal, e.g. aluminium triethyl or diethyl aluminium chloride and a pentavalent phosphorus compound of the type PA1 R.sub.3.sub.-n P(Q)(E--Z--G), e.g. PA1 [(CH.sub.3).sub.2 N].sub.2 P(O)N(CH.sub.3)CH.sub.2 CH.sub.2 N(CH.sub.3).sub.2 and PA1 (CH.sub.3).sub.2 NP(O)[OCH.sub.2 CH.sub.2 N(CH.sub.3).sub.2 ].sub.2 The transition metal compound can be ball-milled in the presence of a further compound which can be the specified phosphorus compound or an electron donor compound, e.g., triphenylphosphine oxide. Using catalysts of this type, a combination of high activity and high stereospecificity can be obtained when polymerising an olefine monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.