Process for slurry polymerization of propylene oxide with...

Details Process for slurry polymerization of propylene oxide with... Process for slurry polymerization of propylene oxide with...

C - Chemistry, Metallurgy

08

G

402/252, 402/266

C08G 65/12 (2006.01) C08G 65/08 (2006.01) C08G 65/22 (2006.01) C08G 65/30 (2006.01)

Patent

CA 1052942

ABSTRACT OF THE DISCLOSURE A propylene oxide slurry polymerization process hav- ing high catalyst efficiency comprises (A) homopolymerizing or copolymerizing propylene oxide in isobutane in the presence of a catalyst substantially soluble in isobutane, (B) separating isobutane with catalyst dissolved therein from propylene oxide polymer, and (C) recycling isobutane and dissolved catalyst for further polymerization. The catalyst comprises (1) at least one trialkylaluminum compound wherein each alkyl group contains from 2 to 10 carbon atoms, (2) at least one diketone containing from 5 to 20 carbon atoms and (3) water. The catalyst may also contain (4) at least one dialkyl ether or cycloalkyl ether containing from 2 to 12 carbon atoms and/or (5) at least one ether alcohol containing from 2 to 12 carbon atoms. -1-

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