STUDIES OF POLYMERIZATION AND RING FORMATION. XIII. POLYAMIDES AND MIXED POLYESTER—POLYAMIDES
STUDIES OF POLYMERIZATION AND RING FORMATION. XIII. POLYAMIDES AND MIXED POLYESTER—POLYAMIDES
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XIII. 聚合和成环的研究。
DOI：
10.1021/ja01343a049
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发表时间：
1932
期刊：
影响因子：
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通讯作者：
J. W. Hill
中科院分区：
文献类型：
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作者：
W. H. Carothers;J. W. Hill
通过在分子蒸馏器中或在惰性气体流中长时间加热，使前述由二元酸和二醇或由更高羟基酸衍生的线性聚酯与自身反应以产生高得多的分子量的聚酯。新型超聚酯（-聚酯）是一种坚韧、不透明的固体，具有清晰的X射线粉末衍射图，并在一定温度下变得透明。它们溶于氯仿，形成高粘度溶液。讨论了反应机理。特拉华州威尔明顿
By prolonged heating in a molecular still or in a stream of inert gas, the previously described linear polyesters derived from dibasic acids and glycols or from higher-hydroxy acids are caused to react with themselves to produce polyesters of much higher molecular weight. The new superpolyesters (-polyesters) are tough, opaque solids which exhibit sharp x-ray powder diffraction patternsand become transparent at a definite temperature. They dissolve in chloroform to form highly viscous solu-tions. The mechanism of the reaction isdiscussed. Wilmington, Delaware