Process for producing butene polymer
US6300444A · kind A · utility
11Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2000 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Apr 15, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
It is possible to produce butene polymer at high yield, which polymer contains 80 mol % or more of polymer molecules having terminal vinylidene structure and being low in the content of residual organic fluorine by a process comprising Step (I) to polymerize in liquid phase by adding complex catalyst composed of boron trifluoride, ether and alcohol and/or water in specified ratios to C.sub.4 fractions and Step (II) to reduce the content of trimer and lighter components contained in the obtained polymer to 0.2% by weight or less by distillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.