Method for preparing modified conjugated diene-based polymer
US10920004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2017 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Apr 4, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2500/05
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preparing a modified conjugated diene-based polymer, and more particularly, provides a method for preparing a modified conjugated diene-based polymer including a step of polymerizing a conjugated diene-based monomer in the presence of an organometal compound in a hydrocarbon solvent to prepare an active polymer which is coupled with an organometal (S1); and a step of reacting or coupling the active polymer prepared in step (S1) with a modifier (S2), wherein step (S1) is continuously performed in two or more polymerization reactors, and a polymerization conversion ratio in a first reactor among the polymerization reactors is 50% or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.