Polymerization process for producing polydienes
US7572867B2 · kind B2 · utility
8Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 2008 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | May 1, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/919
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is disclosed a process for producing a conjugated diene-containing polymer wherein a stream comprising conjugated diene monomer and a specified catalyst, that includes a lanthanide compound and an aluminoxane, is passed through an orifice into the reaction zone of a polymerization vessel, maintained under specific pressure conditions to form a cement having a viscosity that allows the cement to be conveyed through a devolatilization zone, where desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.