Method for producing modified conjugated diene polymer, modified conjugated diene polymer, polymer composition, crosslinked polymer, and tire
US9951167B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2013 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Oct 12, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L9/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A modified conjugated diene-based polymer is produced that is a modified product of a conjugated diene-based polymer obtained by polymerizing a conjugated diene compound, or polymerizing a conjugated diene compound and an aromatic vinyl compound, in the presence of an alkali metal compound or an alkaline-earth metal compound. The modified conjugated diene-based polymer is produced by a production method that includes a main chain modification step that reacts at least either an unsaturated bond or a functional group that is included in a terminal-modified polymer and is not situated at a terminal of the terminal-modified polymer, with a specific compound that includes a functional group that interacts with silica, the terminal-modified polymer being obtained by introducing a functional group that interacts with silica into at least one terminal of the conjugated diene-based polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.