Polymers of carbonic acid, 6. Polymerization of trimethylene carbonate (1,3‐dioxan‐2‐one) with complexation catalysts
Abstract Numerous bulk polymerizations of trimethylene carbonate (1,3‐dioxan‐2‐one, 2 ) were conducted at 90, 120 and 150°C. Tributyltin methoxide, tributyltin acetate, dibutyltin dibromide, tin(II) 2‐ethylhexanotate, bismuth(III) 2‐ethylhexanoate and zinc stearate were used as initiators. On the ba...
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crwiley:10.1002/macp.1991.021921017 2024-09-15T18:01:38+00:00 Polymers of carbonic acid, 6. Polymerization of trimethylene carbonate (1,3‐dioxan‐2‐one) with complexation catalysts Kricheldorf, Hans R. Jenssen, Jörg Kreiser‐Saunders, Ingrid 1991 http://dx.doi.org/10.1002/macp.1991.021921017 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fmacp.1991.021921017 https://onlinelibrary.wiley.com/doi/pdf/10.1002/macp.1991.021921017 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Die Makromolekulare Chemie volume 192, issue 10, page 2391-2399 ISSN 0025-116X 0025-116X journal-article 1991 crwiley https://doi.org/10.1002/macp.1991.021921017 2024-07-30T04:19:38Z Abstract Numerous bulk polymerizations of trimethylene carbonate (1,3‐dioxan‐2‐one, 2 ) were conducted at 90, 120 and 150°C. Tributyltin methoxide, tributyltin acetate, dibutyltin dibromide, tin(II) 2‐ethylhexanotate, bismuth(III) 2‐ethylhexanoate and zinc stearate were used as initiators. On the basis of GPC measurements with universal calibration, weight‐average molecular weights up to approx. 22000 were found. The chemical structure of the resulting polycarbonates was examined by elemental analyses and 1 H NMR spectroscopy. In contrast to similar polymerizations of ethylene carbonate, either groups were never found. However, all polycarbonates contain a CH 2 OH end‐group. Furthermore, methylcarbonate, acetate, 2‐ethylhexanoate or stearate end‐groups were found. Cyclic oligomers were not detectable in the gel‐permeation chromatograms of reaction mixtures. IR spectra indicate complexation of the carbonyl group by the initiators. The reaction mechanism is discussed. Article in Journal/Newspaper Carbonic acid Wiley Online Library Die Makromolekulare Chemie 192 10 2391 2399 |
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English |
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Abstract Numerous bulk polymerizations of trimethylene carbonate (1,3‐dioxan‐2‐one, 2 ) were conducted at 90, 120 and 150°C. Tributyltin methoxide, tributyltin acetate, dibutyltin dibromide, tin(II) 2‐ethylhexanotate, bismuth(III) 2‐ethylhexanoate and zinc stearate were used as initiators. On the basis of GPC measurements with universal calibration, weight‐average molecular weights up to approx. 22000 were found. The chemical structure of the resulting polycarbonates was examined by elemental analyses and 1 H NMR spectroscopy. In contrast to similar polymerizations of ethylene carbonate, either groups were never found. However, all polycarbonates contain a CH 2 OH end‐group. Furthermore, methylcarbonate, acetate, 2‐ethylhexanoate or stearate end‐groups were found. Cyclic oligomers were not detectable in the gel‐permeation chromatograms of reaction mixtures. IR spectra indicate complexation of the carbonyl group by the initiators. The reaction mechanism is discussed. |
format |
Article in Journal/Newspaper |
author |
Kricheldorf, Hans R. Jenssen, Jörg Kreiser‐Saunders, Ingrid |
spellingShingle |
Kricheldorf, Hans R. Jenssen, Jörg Kreiser‐Saunders, Ingrid Polymers of carbonic acid, 6. Polymerization of trimethylene carbonate (1,3‐dioxan‐2‐one) with complexation catalysts |
author_facet |
Kricheldorf, Hans R. Jenssen, Jörg Kreiser‐Saunders, Ingrid |
author_sort |
Kricheldorf, Hans R. |
title |
Polymers of carbonic acid, 6. Polymerization of trimethylene carbonate (1,3‐dioxan‐2‐one) with complexation catalysts |
title_short |
Polymers of carbonic acid, 6. Polymerization of trimethylene carbonate (1,3‐dioxan‐2‐one) with complexation catalysts |
title_full |
Polymers of carbonic acid, 6. Polymerization of trimethylene carbonate (1,3‐dioxan‐2‐one) with complexation catalysts |
title_fullStr |
Polymers of carbonic acid, 6. Polymerization of trimethylene carbonate (1,3‐dioxan‐2‐one) with complexation catalysts |
title_full_unstemmed |
Polymers of carbonic acid, 6. Polymerization of trimethylene carbonate (1,3‐dioxan‐2‐one) with complexation catalysts |
title_sort |
polymers of carbonic acid, 6. polymerization of trimethylene carbonate (1,3‐dioxan‐2‐one) with complexation catalysts |
publisher |
Wiley |
publishDate |
1991 |
url |
http://dx.doi.org/10.1002/macp.1991.021921017 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fmacp.1991.021921017 https://onlinelibrary.wiley.com/doi/pdf/10.1002/macp.1991.021921017 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Die Makromolekulare Chemie volume 192, issue 10, page 2391-2399 ISSN 0025-116X 0025-116X |
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http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/macp.1991.021921017 |
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Die Makromolekulare Chemie |
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192 |
container_issue |
10 |
container_start_page |
2391 |
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2399 |
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1810438736935124992 |