Polymer product containing isobutylene oxide polyols

Details Polymer product containing isobutylene oxide polyols Polymer product containing isobutylene oxide polyols

1990-12-27

1991-10-08

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

528 76, 528 77, 528110, 528272, 528300, 528301, 528406, 528418, C08G 1848, C08G 5962, C08G 63668, C08G 63672

Patent

active

050554964

ABSTRACT:
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.

REFERENCES:
patent: 3374277 (1968-03-01), Vandenberg
patent: 4743244 (1988-05-01), LeKhac
patent: 4849126 (1989-07-01), Kud et al.

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