Polymerization using bimetallic bis-lanthanoid initiators
US5489651A · kind A · utility
5Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1994 |
| Grant date | Feb 6, 1996 |
| Priority date | — |
| Expiry date | Feb 14, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/52
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
"Living" polymerization methods are described wherein a bimetallic lanthanide complex initiator is reacted with a monomer. Using these methods, link-functionalized polymers can be formed that are capable of being modified after polymerization with various reactants, or to be biodegraded through oxidation or reduction or cleavage. The bimetallic lanthanide complex initiator can be used to polymerize methyl methacrylate in a living fashion. A two-step method of forming a triblock polymer using the bimetallic lanthanide complex initiator is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.