SYNTHESIS AND PROPERTIES OF POLYURETHANES DERIVED FROM BIS-N-HYDROXYIMIDES AND DIISOCYANATES

被引:13
作者
KURITA, K
IMAJO, H
IWAKURA, Y
机构
关键词
D O I
10.1002/pol.1979.170170606
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
In the reported experiments, polyurethanes were synthesized by polyaddition reaction of bis-N-hydroyimides and diisocyanates. The reactions were carried out in an aprotic polar solvent such as dimethylacetamide or N-methyl-2-pyrrolidone, and the polymers with inherent viscosities of up to 1. 32 dl/g were obtained. These polyurethanes were found to exhibit high reactivity toward nucleophiles such as water and amines, which brought about rapid reduction of viscosity. The stabilities against heat and exposure to sunlight were also studied.
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页码:1619 / 1629
页数:11
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