Isobutylene oxide polyols

Details Isobutylene oxide polyols Isobutylene oxide polyols

C - Chemistry, Metallurgy

08

G

402/165, 402/252

C08G 18/48 (2006.01) C08G 59/00 (2006.01) C08G 59/02 (2006.01) C08G 65/08 (2006.01) C08G 65/26 (2006.01)

Patent

CA 2009774

ABSTRACT OF THE DISCLOSURE Novel polyether polyols are disclosed which contain an internal block of isobutylene oxide or a mixture of isobutylene oxide and a mono- or unsaturated alkylene oxide and an end-cap of a mono-or unsubstituted alkylene oxide to provide reactive primary or secondary hydroxyl end-groups. The polyether polyols are useful intermediates in the production of segmented elastomers. A process for the preparation of the novel polyols is also described in which an alkali metal catalyst and a crown ether cocatalyst are employed to afford polyols containing relatively low levels of unsaturation.

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