Carbocationic catalysts and process for using said catalysts
US5350819A · kind A · utility
50Cited by
6References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1993 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Apr 8, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A living carbocationic catalyst composition comprising an initiator of a tertiary alkyl halide, a tertiary aralkyl halide or polymeric halide a co-initiator of an alkyl aluminum or alkyl boron, a proton scavenger and a solvent medium with a dielectric constant between 2.5 and 3.25 is used to produce narrow molecular weight distribution polymers particularly isobutylene polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.