Process for preparing block copolymer of monoolefin
US5698634A · kind A · utility
10Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Jul 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing a block copolymer of an .alpha.-olefin and a vinyl compound is here disclosed which comprises the steps of polymerizing an olefin selected from ethylene and the .alpha.-olefin having 3 or more carbon atoms by the use of a divalent or a trivalent rare earth metal complex, and then polymerizing a vinyl compound, a vinylidene compound or a lactone. According to the process of the present invention, a polar group can be introduced into a polyolefin, whereby the characteristics of the polymer can be effectively improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.