Purification of propylene oxide

Details Purification of propylene oxide Purification of propylene oxide

C - Chemistry, Metallurgy

07

D

C07D 303/04 (2006.01) C07C 41/02 (2006.01) C07C 43/11 (2006.01) C07D 301/32 (2006.01) C08G 18/32 (2006.01) C08G 65/08 (2006.01)

Patent

CA 2100711

ABSTRACT A process for purifying propylene oxide containing an unacceptable quantity of poly(propylene oxide) contaminant having a molecular weight of at least 50,000, which comprises contacting the so-contaminated propylene oxide with a quantity of a substantially non- -calcined diatomaceous earth for a time and under conditions sufficient to reduce the amount of such contaminant in such propylene oxide to acceptable levels, and recovering the purified propylene oxide product. Also, processes for making polyether polyols from such purified propylene oxide products, and for making high resilient flexible polyurethane foams from such polyols.

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