Catalytic polymerization process
US6624261B1 · kind B1 · utility
8Cited by
6References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 19, 1998 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Aug 19, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G83/003
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a process for controlling the architecture of copolymers of at least two unsaturated monomers, made by free-radical polymerization in the presence of a cobalt-containing chain transfer agent, including the control of molecular weight, degree of branching and vinyl end group termination, by varying at least one of the variables of molar ratio of monomers, their relative chain transfer constants, polymerization temperature and degree of conversion and amount of cobalt chain transfer agent; and polymers made thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.