| title: |
| Ring-opening polymerization of siloxanes with nitrogen containing bases |
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| contributing persons: |
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| contributing corporate bodies: |
| Universität Rostock[Grad-verleihende Institution] |
 |
38329-6 |
| Universität Rostock, Mathematisch-Naturwissenschaftliche Fakultät[Grad-verleihende Institution] |
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2147083-2 |
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| abstract: |
|
The anionic ring-opening polymerization of cyclosiloxanes is one important route for
synthesizing polyorganosiloxanes and several different initiators are well known.
In the scope of this work especially N-Heterocyclic carbenes as well as amines, amidines
and guanidines were investigated as suitable initiators and coinitiators respectively.
The proposed mechanism which includes the activation of an alcohol, was extended leading
to a α-, ω-di(alkoxydimethylsilyl) endcapped silicone. Influencing parameters such
as reaction parameters, the nature of the solvent and the alcohol were investigated.
[English] |
|
Die anionische Ringöffnungspolymerisation cyclischer Siloxane stellt ein wichtiges
Verfahren zur Herstellung von Polyorganosiloxanen dar. Im Rahmen dieser Arbeit wurden
insbesondere Amine, Amidine und Guanidine als mögliche Initiatoren bzw. Coinitiatoren
untersucht. Der vorgeschlagenen Mechanismus mittels Aktivierung eines Alkohols wurde
erweitert und führt zur Bildung eines α-, ω-di(methoxydimethylsilyl) terminierten
Polydimethylsiloxan. Ebenfalls wurden verschiedene Reaktionsparameter sowie der Einfluss
des Lösemittels und des Alkohols untersucht.
[German] |
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| document type: |
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| institution: |
| Faculty of Mathematics and Natural Sciences |
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| language: |
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| subject class (DDC): |
| 540 Chemistry & allied sciences |
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publication /
production: |
Rostock
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Rostock: Universität Rostock
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|
2018
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| statement of responsibility: |
| vorgelegt von Theresia Dorothee Köhler |
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| identifiers: |
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| access condition: |
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| license/rights statement: |
all rights reserved
This work may only be used under the terms of the German Copyright Law (Urheberrechtsgesetz). |
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| RosDok id: |
rosdok_disshab_0000002468 |
| created / modified: |
04.03.2021 / 08.08.2023
|
| metadata license: |
The metadata of this document was dedicated to the public domain
(CC0 1.0 Universal Public Domain Dedication). |
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