An approach to applicable inorganic polymers. V. Borazine-phosphonate systems especially those containing the vinyl group
| Autor: | B. E. Deuters, W. Gerrard, G. C. Brown |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Journal of Applied Chemistry. 15:372-378 |
| ISSN: | 1934-998X 0021-8871 |
| DOI: | 10.1002/jctb.5010150805 |
| Popis: | In the continued search for useful inorganic polymers, boron-containing monomers having the vinyl group attached to boron and/or phosphorus were prepared. B-trimethyl-borazines (MeBNAr)3 (Ar = o- or p-EtC6H4) were α-brominated by N-bromosuccinimide; but dehydrobromination to introduce the vinyl group was of limited success. Vinylboron dichloride reacted with ethyl phosphate or bis-(2-chloroethyl) vinylphosphonate to give the alkyl chloride (EtCl or Cl2C2H4) and polycondensates containing presumably P-O-B linkages. Similar results were obtained with the vinylphosphonate and B-trichloroborazine, or B-trichloro-N-tri-o-ethylphenylborazine or o-ethyl-phenylboron dichloride. Interaction of B-trichloro-N-triallylborazine and tri-n-butyl phosphate similarly gave n-butyl chloride and the B-O-P compound. Reduction of functionality of boron and/or phosphorus by attachment of the vinyl group did not lead to a marked improvement in the properties of the condensates. Prospects of incorporating vinyl polymerisation are not promising; nevertheless further knowledge of the factors relating to P-O-B and similar polycondensation systems has been gathered. |
| Databáze: | OpenAIRE |
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