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首页> 外文期刊>Journal of Applied Polymer Science >Novel polyureas having isobutenyl bis(aryl ether) moieties in the polymer main chain: Synthesis, tandem Claisen rearrangement, and thermal patterning on polymer film surface using microthermal analyzer
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Novel polyureas having isobutenyl bis(aryl ether) moieties in the polymer main chain: Synthesis, tandem Claisen rearrangement, and thermal patterning on polymer film surface using microthermal analyzer

机译：在聚合物主链中具有异丁烯基双（芳基醚）部分的新型聚脲：合成，串联克莱森重排和使用微热分析仪在聚合物膜表面进行热构图

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摘要

Two kinds of new polyureas 2a and 2b were synthesized by polyaddition of 1,4-phenylene diisocyanate with 2-(2-[(2-amino-4-methyl-phenoxy)methyl]allyl)oxy-5methyl-aniline (diamine 1a) and 2-[2-[(2-an-lino-4-tert-butyl-phenoxy)methyl]allyl)oxy-5tert-butyl-aniline (diamine 1b), respectively. The isobutenyl bis(aryl ether) moiety, capable of yielding plural phenolic hydroxyls by means of tandem Claisen rearrangement (TCR), was successfully incorporated into the resulting polymer main chain. TCR at isobutenyl bis(aryl ether) moieties readily occurred by heating in the bulk state, affording phenolic hydroxy groups ortho to urea linkages. Subsequent intramolecular cyclization between the hydroxy groups and the urea groups gave the bis(2-benzoxazolinone) derivatives, with loss of 1,4-phenylenediamine, resulting in degradation of the polymers. At the same time, the thermal properties were investigated by TG/DTA. The degradation of these new polymers in the bulk state was shown to proceed smoothly by heating at 230degreesC. Using a microthermal analyzer (muTA), a preliminary study of thermal patterning on polyurea. 2b film surface was carried out, and precise spot patterns were successfully processed with diameters of less than 1 mum. Two kinds of novel polyureas, containing isobutenyl bis(aryl ether) moieties ortho to the urea linkages were successfully synthesized. These results imply that these easily decomposable polymers might be used as patterning materials. (C) 2002 Wiley Periodicals, Inc. [References: 9]
机译：通过将1，4-亚苯基二异氰酸酯与2-（2-[（[2-氨基-4-甲基-苯氧基）甲基]烯丙基）氧-5甲基-苯胺（二胺1a）加聚来合成两种新的聚脲2a和2b。和2- [2-[（2-2-亚氨基-4-叔丁基苯氧基）甲基]烯丙基）氧基-5叔丁基苯胺（二胺1b）。能够通过串联克莱森重排（TCR）产生多个酚羟基的异丁烯基双（芳基醚）部分成功地并入所得的聚合物主链中。通过在本体状态下加热容易在异丁烯基双（芳基醚）部分上发生TCR，从而提供邻位至脲键的酚羟基。随后在羟基和脲基之间的分子内环化得到双（2-苯并恶唑啉酮）衍生物，损失了1，4-苯二胺，导致聚合物降解。同时，通过TG / DTA研究了热性能。这些新聚合物在本体状态下的降解显示出通过在230℃下加热而顺利进行。使用微热分析仪（muTA），对聚脲上的热图案进行了初步研究。进行2b膜表面处理，并且成功地加工了直径小于1微米的精确斑点图案。成功地合成了两种新颖的聚脲，它们含有与脲键相邻的异丁烯基双（芳基醚）部分。这些结果表明，这些易分解的聚合物可以用作图案材料。 （C）2002 Wiley Periodicals，Inc. [参考：9]

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