Polymerization process
US4051307A · kind A · utility
3Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1973 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Jun 4, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/906
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An olefine polymerization catalyst includes a complex compound of phosphorus having the general formula EQU R".sub.2 P(Q).sub.a XP(Q).sub.a R".sub.2 where the various groups are defined. Typical phosphorus compounds include EQU [(CH.sub.3).sub.2 N].sub.2 P(O)OP(O)[N(CH.sub.3).sub.2 ].sub.2. catalyst systems containing these phosphorus compounds give a high rate of polymerization together with a low proportion of soluble polymer. The phosphorus compound can be ball-milled with the titanium compound to give an improved effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.