Conjugated diene polymer and method for producing same
US9243100B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 4, 2012 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Sep 4, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/72
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Conjugated diene polymer comprising at least a conjugated diene monomer unit, the conjugated diene polymer has a number-average molecular weight (Mn) in terms of polystyrene of 1,000 to 1,000,000, a ratio (Mw/Mn) of a weight-average molecular weight (Mw) to the number-average molecular weight (Mn) of lower than 2.0 and the polymer bears a halogen atom at a terminal of the polymer chain. Method for producing the conjugated diene polymer comprises subjecting a monomer containing at least a conjugated diene to living radical polymerization using a polymerization initiator comprising a halogenocyclopentadienyl triorganophosphine η2-olefin ruthenium complex represented by formula (6) (and an organic halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.