Polymerization of CO/olefin with two distinct temperatures
US5095091A · kind A · utility
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Key dates
| Filing date | Oct 18, 1990 |
| Grant date | Mar 10, 1992 |
| Priority date | — |
| Expiry date | Oct 18, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon in the presence of a reaction diluent and a catalyst composition formed from a palladium compound, the anion of a strong non-hydrohalogenic acid and a bidentate ligand of phosphorus, nitrogen or sulfur comprises conducting a first polymerization to produce a prepolymer and completing the polymerization at a lower temperature in the presence of sufficient prepolymer to constitute a substantial proportion of the polymerization mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.