Living polymer hydrogenation catalyst and process for hydrogenating polymers with the catalyst
US5910566A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1998 |
| Grant date | Jun 8, 1999 |
| Priority date | — |
| Expiry date | Jan 26, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/46
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention is to provide a process for the hydrogenation of conjugated diene polymer in an inert organic solvent, said polymer being obtained by polymerization or copolymerization of a conjugated diene, which comprise effecting selective hydrogenation of unsaturated double bonds in the conjugated diene units of said conjugated diene polymer in the presence of catalyst represented by the following formula (I) ##STR1## wherein Cp is cyclopentadienyl (C.sub.5 H.sub. --); PA1 X.sub.1 and X.sub.2 are each independently a hologen atom, such as, chlorine or bromine; PA1 Y is carbon or nitrogen atom; and PA1 R.sub.1, R.sub.2 and R.sub.3 are each independently hydrogen atom or C.sub.1 -C.sub.4 lower alkyls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.