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Abstract <p>Urethane thermoplastic elastomers were synthesized from oligobutylene glycol adipate and diisocyanate using the aromatic diol 2,2′-[propane-2,2-diylbis(<i>p</i>-phenyleneoxy)]diethanol as a chain extender. 4,4′-Diphenylmethane diisocyanate and isophorone diisocyanate were used as diisocyanates. The synthesis of a thermoplastic elastomer based on cycloaliphatic diisocyanate was carried out in the presence of an organotin catalyst. It was found that replacing the aromatic diisocyanate with a cycloaliphatic one led to the transition of the amorphous polymer into a crystalline one. At the same time, its deformation and strength properties, hardness, and light resistance increased.</p>

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Influence of the Nature of Diisocyanate on the Synthesis Conditions and Properties of Urethane Thermoplastic Elastomers

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • I. N. Bakirova,
  • T. A. Mineeva

摘要

Abstract

Urethane thermoplastic elastomers were synthesized from oligobutylene glycol adipate and diisocyanate using the aromatic diol 2,2′-[propane-2,2-diylbis(p-phenyleneoxy)]diethanol as a chain extender. 4,4′-Diphenylmethane diisocyanate and isophorone diisocyanate were used as diisocyanates. The synthesis of a thermoplastic elastomer based on cycloaliphatic diisocyanate was carried out in the presence of an organotin catalyst. It was found that replacing the aromatic diisocyanate with a cycloaliphatic one led to the transition of the amorphous polymer into a crystalline one. At the same time, its deformation and strength properties, hardness, and light resistance increased.