This invention relates to ethylenically unsaturated macromers which
contain reactive unsaturation, and to a process for preparing these
ethylenicallly unsaturated macromers which contain reactive unsaturation.
The process of preparing these ethylenically unsaturated macromers
comprises reacting a monofunctional compound which corresponds to a
specific formula with at least one alkylene oxide, in the presence of at
least one alkoxylation catalyst. The ethylenically unsaturated macromers
correspond to the formula set forth herein. This invention also relates
to preformed stabilizers comprising ethylenically unsaturated macromers,
to a process for preparing these preformed stabilizers, to polymer
polyols comprising these preformed stabilizers, and to a process of
preparing these polymer polyols which comprise these preformed
stabilizers. Polymer polyols comprising ethylenically unsaturated
macromers and a process for their preparation are also described.