• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and properties of new polyurethane ionomers. I. Photosensitive cationomers with triazene units
【24h】

Synthesis and properties of new polyurethane ionomers. I. Photosensitive cationomers with triazene units

机译：新型聚氨酯离聚物的合成与性能。一，具有三氮烯单元的光敏阳离子聚合物

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

New bifunctional triazene compounds 1-(m-hydroxymethyl)phenyl-3-(2-hydroxyethyl)-3-methyltriaz(l)ene and 1-p-nitrophenyl-3,3-di(2-hydroxyethyl)triaz(l)ene as intermediates in polyurethane synthesis were prepared. Photosensitive polyetherurethane cationomers based on poly(tetrameth-ylene oxide) diol of 2,000 average molecular weight, tolylene-2,4-diisocyanate, and N-methyldiethanolamine/triazene diols, as cochain extender, followed by a quaternization with benzyl chloride, were synthesized and characterized. Upon UV irradiation, feniltriazene chromophore in monomer and both polymers (ionomeric or nonionomeric type) is irreversibly cleaved, as evidenced in photolytic and kinetic studies. The rate constant of photolysis in ionomer film was lower than for the corresponding nonionic film. A positive pattern can then be developed by treatment with CHCl3 that dissolves the exposed zone, while the unexposed area remains resistant and insoluble. By incorporating side nitrofeniltriazene groups, photostable polyurethanes were obtained. (C) 2003 Wiley Periodicals, Inc. [References: 25]
机译：新的双官能三氮烯化合物1-（间羟甲基）苯基-3-（2-羟乙基）-3-甲基三氮唑（l）烯和1-对硝基苯基-3,3-二（2-羟乙基）三氮唑（l）烯制备聚氨酯合成中间体。合成了基于平均分子量为2,000的聚四甲撑环氧乙烷二醇，甲苯2,4-二异氰酸酯和N-甲基二乙醇胺/三嗪二醇作为共扩链剂的光敏聚醚氨基甲酸酯阳离子聚合物，然后与苄基氯进行季铵化表征。紫外线照射后，单体和两种聚合物（离聚物或非离聚物类型）中的苯并三氮烯发色团均不可逆地裂解，如光解和动力学研究所示。离聚物膜的光解速率常数低于相应的非离子膜的光解速率常数。然后可以通过用CHCl3处理形成正图，该CHCl3溶解了暴露的区域，而未暴露的区域仍然具有抗性和不溶性。通过引入硝基苯并三氮杂侧基，获得了光稳定的聚氨酯。 （C）2003 Wiley Periodicals，Inc. [参考：25]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号