1.The effect of using PBO and phthalandione as a combinative extender on the extension is tested.
并与苯酐联,测定了联。
2.Study of low angle laser light scattering indicats, in a certain limits of extender amount, the polyurethane have a amorph pseudomicrostructure...
溶解测定结表明,本文中的聚氨酯为具有不同支化程度的可溶聚合物。
3.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).