摘要 |
<p>ALLOPHANATE-MODIFIED STABILIZERS AND THE POLYMER POLYOLS PREPARED FROM THESE STABILIZERS This invention relates to novel ethylenically unsaturated macromers, preformed stabilizers prepared from these novel macromers, polymer polyols prepared from either the novel ethylenically unsaturated macromers or the preformed stabilizers, and to processes for the preparation of these compositions. Figure (None)</p> |