Modified oligoether-diamine synthesis for the preparation of crystallizable polymers based on epoxyurethane oligomers
Abstract A modified synthetic method for amino-terminated oligo tetramethylene oxides is presented. Diamines were synthesized via a three-step route from oligo tetramethylene oxide diol with an average molecular weight of 2000. The final step – oligoether-diphthalimide hydrazinolysis – has been impr...
Published in: | Zeitschrift für Naturforschung B |
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Walter de Gruyter GmbH
2023
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crdegruyter:10.1515/znb-2022-0134 2024-06-23T07:50:22+00:00 Modified oligoether-diamine synthesis for the preparation of crystallizable polymers based on epoxyurethane oligomers Slobodinyuk, Alexey Elchisheva, Nadezhda Strelnikov, Vladimir Chernova, Galina Slobodinyuk, Daria 2023 http://dx.doi.org/10.1515/znb-2022-0134 https://www.degruyter.com/document/doi/10.1515/znb-2022-0134/xml https://www.degruyter.com/document/doi/10.1515/znb-2022-0134/pdf en eng Walter de Gruyter GmbH Zeitschrift für Naturforschung B volume 78, issue 1-2, page 17-23 ISSN 0932-0776 1865-7117 journal-article 2023 crdegruyter https://doi.org/10.1515/znb-2022-0134 2024-06-11T04:05:09Z Abstract A modified synthetic method for amino-terminated oligo tetramethylene oxides is presented. Diamines were synthesized via a three-step route from oligo tetramethylene oxide diol with an average molecular weight of 2000. The final step – oligoether-diphthalimide hydrazinolysis – has been improved. The yield of the target product has been shown to be more than 1.5 times higher when the molar ratio of the reacting components was changed. The oligoether-diamine and the reaction intermediates have been identified by 1 H and 13 C NMR spectroscopy. It has been demonstrated that the synthesized amine can be used as a curing agent for epoxy urethane oligomers. It is shown that the glass transition temperature of the cured elastomers is lower than −70 °C. These elastomers can be recommended for the use in the conditions of the Arctic and the Far North or Far South of the globe. Article in Journal/Newspaper Arctic De Gruyter Arctic Zeitschrift für Naturforschung B 78 1-2 17 23 |
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Open Polar |
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De Gruyter |
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crdegruyter |
language |
English |
description |
Abstract A modified synthetic method for amino-terminated oligo tetramethylene oxides is presented. Diamines were synthesized via a three-step route from oligo tetramethylene oxide diol with an average molecular weight of 2000. The final step – oligoether-diphthalimide hydrazinolysis – has been improved. The yield of the target product has been shown to be more than 1.5 times higher when the molar ratio of the reacting components was changed. The oligoether-diamine and the reaction intermediates have been identified by 1 H and 13 C NMR spectroscopy. It has been demonstrated that the synthesized amine can be used as a curing agent for epoxy urethane oligomers. It is shown that the glass transition temperature of the cured elastomers is lower than −70 °C. These elastomers can be recommended for the use in the conditions of the Arctic and the Far North or Far South of the globe. |
format |
Article in Journal/Newspaper |
author |
Slobodinyuk, Alexey Elchisheva, Nadezhda Strelnikov, Vladimir Chernova, Galina Slobodinyuk, Daria |
spellingShingle |
Slobodinyuk, Alexey Elchisheva, Nadezhda Strelnikov, Vladimir Chernova, Galina Slobodinyuk, Daria Modified oligoether-diamine synthesis for the preparation of crystallizable polymers based on epoxyurethane oligomers |
author_facet |
Slobodinyuk, Alexey Elchisheva, Nadezhda Strelnikov, Vladimir Chernova, Galina Slobodinyuk, Daria |
author_sort |
Slobodinyuk, Alexey |
title |
Modified oligoether-diamine synthesis for the preparation of crystallizable polymers based on epoxyurethane oligomers |
title_short |
Modified oligoether-diamine synthesis for the preparation of crystallizable polymers based on epoxyurethane oligomers |
title_full |
Modified oligoether-diamine synthesis for the preparation of crystallizable polymers based on epoxyurethane oligomers |
title_fullStr |
Modified oligoether-diamine synthesis for the preparation of crystallizable polymers based on epoxyurethane oligomers |
title_full_unstemmed |
Modified oligoether-diamine synthesis for the preparation of crystallizable polymers based on epoxyurethane oligomers |
title_sort |
modified oligoether-diamine synthesis for the preparation of crystallizable polymers based on epoxyurethane oligomers |
publisher |
Walter de Gruyter GmbH |
publishDate |
2023 |
url |
http://dx.doi.org/10.1515/znb-2022-0134 https://www.degruyter.com/document/doi/10.1515/znb-2022-0134/xml https://www.degruyter.com/document/doi/10.1515/znb-2022-0134/pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Zeitschrift für Naturforschung B volume 78, issue 1-2, page 17-23 ISSN 0932-0776 1865-7117 |
op_doi |
https://doi.org/10.1515/znb-2022-0134 |
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Zeitschrift für Naturforschung B |
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78 |
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1-2 |
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17 |
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23 |
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1802641244210331648 |