n.聚醚
A raw rubber for millable polyether polyurethane elastomer was prepared. 研制了一種新型的聚醚型聚氨酯生膠。
They are synthesized by the reaction of a polyester polyol, or polyether polyol, with an aromatic or aliphatic isocyanate. 他們由一種聚酯多羥基化合物或聚醚多羥基化合物與另一種芳香或脂肪族異氰酸鹽的反應(yīng)而合成。
