Neue Polyphenylensulfone : Reaktionen an festen Polymeren
A method is described by which aromatic polythioethers containing sulfone groups regularly distributed along the polymer chain are oxidized in solid suspensions quantitatively to polyarylenesulfones of the genereal structure –Ar–SO2–Ar–SO2–Ar–SO2–, Ar being identical or different nuclei such as ben...
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| Main Authors: | , |
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| Format: | Article |
| Language: | deu |
| Published: |
Swiss Chemical Society
1974-09-01
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| Series: | CHIMIA |
| Online Access: | https://www.chimia.ch/chimia/article/view/9174 |
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| Summary: | A method is described by which aromatic polythioethers containing sulfone groups regularly distributed along the polymer chain are oxidized in solid suspensions quantitatively to polyarylenesulfones of the genereal structure –Ar–SO2–Ar–SO2–Ar–SO2–, Ar being identical or different nuclei such as benzene, naphthalene or diphenyl. Polymers of this type have heretofore not been obtained in a pure state and with high molecular weight.
The all-para-substituted benzene analog according to the above structure, poly-1,4-phenylenesulfone, is of particular interest due to its high crystalline melting point (520 °C) and outstanding thermal and chemical stability. It is insoluble in all solvents, however, if the oxidation is conducted in sulfuric acid suspension a soluble intermediate is observed which is suitable for fiber of film formation. Solubility and color effects are discussed in the light of published work with monomer model compounds.
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| ISSN: | 0009-4293 2673-2424 |