Polyurethane_urea used for leather finishing was prepared from aliphatic diisocyanate by ketazine process.
选择脂肪族二异氰酸酯,通过酮连氮法制备水乳型聚氨酯—脲皮剂。
Polyurethane_urea used for leather finishing was prepared from aliphatic diisocyanate by ketazine process.
选择脂肪族二异氰酸酯,通过酮连氮法制备水乳型聚氨酯—脲皮剂。
Toluene diisocyanate (TDI) is one of the most useful kinds of isocyanateth that is produced by the method of phosgenation of amine.
甲苯二异氰酸酯(TDI)是异氰酸酯合物中应
最广泛的品种之一,其工业生产主要采
胺
法。
A series of polyarylsulphone\|polyetherurethane block copolymers are synthesized through hydrogen polyaddition of diisocyanate terminated poly(oxypropylene)ether with polyethersulphone diphenol.
通过端二异氰酸酯聚醚预聚物与齐聚醚砜二酚模型物的氢转移加成聚合反应合成了一系列聚芳醚砜-聚醚氨酯嵌段共聚物。
The second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate and through a one-step condensation reaction in organic solvent and under the action of catalyst.
第二种聚酰亚胺聚合物是芳香族四酸二酐与芳香族二异氰酸酯,在有机溶剂中,在催剂的作
下,一步法缩合反应制备得到;
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