Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1974-10-24
1976-05-18
Cockeram, H. S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
526 69, 526 70, 526208, 526237, 526266, 526320, C08G 6508, C08G 6510, C08G 6530
Patent
active
039576973
ABSTRACT:
A propylene oxide slurry polymerization process having 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.
REFERENCES:
patent: 2482056 (1949-09-01), Elwell et al.
patent: 3135705 (1964-06-01), Vandenberg
patent: 3275573 (1966-09-01), Vandenberg
patent: 3280045 (1966-10-01), Vandenberg
patent: 3285861 (1966-11-01), Vandenberg
patent: 3642667 (1972-02-01), Steller
Condensed Chemical Dictionary, 5th Edition, Reinhold, N.Y. (1956), p. 989.
Bean E. K.
Cockeram H. S.
Powell, Jr. J. Hughes
The B. F. Goodrich Company
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