POLYETHER ESTER POLYOL, PREPARATION METHOD THEREFOR, AND METHOD FOR PREPARING POLYURETHANE ELASTOMER BY USING POLYETHER ESTER POLYOL
The present application relates to a polyether ester polyol, comprising repeated formula (1) structures and end-capped alcohol hydroxyl groups: formula (1), wherein R1 is selected from at least one of an aromatic ring or an heteroaromatic ring, and the mass content of R1 in the repeated formula (1)...
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Format: | Patent |
Sprache: | chi ; eng ; fre |
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Zusammenfassung: | The present application relates to a polyether ester polyol, comprising repeated formula (1) structures and end-capped alcohol hydroxyl groups: formula (1), wherein R1 is selected from at least one of an aromatic ring or an heteroaromatic ring, and the mass content of R1 in the repeated formula (1) structures is 4.5%-44%; R2 is selected from at least one of saturated alkane groups having 2-3 carbon atoms; x is 2-20; the mass percentage of the repeated formula (1) structures in the polyether ester polyol is greater than 75%; the average functionality of the end-capped alcohol hydroxyl groups is 1.95-2.00; and the number-average molecular weight of the polyether ester polyol is 800-5000. The present application also relates to a preparation method for a polyether ester polyol, and a method for preparing a polyurethane elastic fiber, non-woven fabric, membrane or elastomer by using the polyether ester polyol, so that a polyurethane product prepared from a raw material having lower costs can still achieve similar |
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