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US 7,803,897 B2Granted
Process for preparing polyketone
AssigneeHyosung Corporation
InventorsJean-Young Jang, Jong-In Choi, Hae-Souk Cho, Jae-Yoon Shim, Sung-Kyun Yoon, Heon-Su Kim, Toniolo Luigi, Vavasori Andrea
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Abstract
The present invention relates to a process for preparing polyketone with improved catalytic activity and intrinsic viscosity, and specifically a process for preparing polyketone, using a mixed solvent of 40 to 60 mol % acetic acid and 40 to 60 mol % water, as a liquid medium, and the precursor of palladium chloride-1,3-bis[di(methoxyphenyl)phosphino]propane, as a catalyst component.
Claims2
A process for preparing a polyketone,
- wherein the polyketone is copolymerized with carbon monoxide and an ethylene at a temperature of 90° C. and a pressure of 110 bar in a mixture ratio of 40 to 60 mol % acetic acid and 40 to 60 mol % water as a liquid medium and in the presence of a catalyst precursor produced by coupling palladium chloride and 1,3-bis[di(methoxyphenyl)phosphino]propane.
Dependencies are inferred from the claim text.