Method for copolymerization and resulting copolymers
US6730744B1 · kind B1 · utility
0Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Jul 15, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention concerns a method for preparing block copolymers comprising steps which consist in: polymerising a first monomer using an organolanthanide catalyst wherein said catalyst in the form of a hydride complex of a trivalent metal from the group of rare earths; then in polymerising at least a second monomer. The invention also concerns block copolymers whereof the blocks are polyolefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.