Production of highly reactive low molecular weight PIB oligomers
US8524843B2 · kind B2 · utility
1Cited by
4References
19Claims
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Key dates
| Filing date | Jun 5, 2012 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Jun 5, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In an embodiment, the present invention provides a process for the liquid phase polymerization of isobutylene to manufacture highly reactive PIB oligomers having Mn under 1000, using a catalyst composition comprising a Friedel-Crafts catalyst and a complexing agent, in the presence of a chain transfer agent. The process advantageously uses short residence times for the isobutylene in the polymerization reaction zone as well as a chain transfer agent selected from: α-DIB and β-DIB and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.