The effect of using PBO and phthalandione as a combinative extender on the extension is tested.
苯酐联用,测定了联用效果。
The effect of using PBO and phthalandione as a combinative extender on the extension is tested.
苯酐联用,测定了联用效果。
And two new segmented poly(urethaneureas) were prepared from poly(tetramethylene glycol)(PTMG) or polyadipate of 1,4 butanediol(PBA), MDI and Urea(as chain extender).
尿素为扩链剂，合成了一系列聚氨酯脲热塑性弹性体及其硬
模型化合物。
Study of low angle laser light scattering indicats, in a certain limits of extender amount, the polyurethane have a amorph pseudomicrostructure...
溶解测定结果表
,本文中的聚氨酯为具有不同支化程度的可溶性聚合物。
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