Production of highly reactive low molecular weight PIB oligomers
US9856335B2 · kind B2 · utility
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12References
20Claims
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Assignee
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Key dates
| Filing date | Aug 16, 2016 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Aug 16, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2527/1213
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In one preferred 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 a complexing agent, a chain transfer agent and a polymerization-retarding agent. A chain transfer agent may be selected from: α-DIB and β-DIB and mixtures thereof.A polymerization-retarding agent may be selected from:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.