PROCEDE DE POLYMERISATION PAR VOIE CATALYTIQUE DE 1,4-DIOXANES-2,5-DIONES ET LES POLYMERES CORRESPONDANTS
First Claim
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1. Polymerization method for 1,4-dioxane-2,5-diones in the presence of at least one generally protic initiator and at least one catalyst, said method being characterized in that the catalyst comprises at least one organic compound devoid of metal.
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Abstract
A method for polymerizing 1,4-dioxane-2,5-diones in the presence of a generally protic initiator and at least one catalyst including at least one metal-free organic compound. The latter is a non-metal organic catalyst most often selected from among pyridines of which DMAP is a derivative, sulfonic acids, polycyclic tertiary amines, phosphazenes, thioureas, thioureas/amines, and guanidines. The invention also relates to polymers obtained by the method.
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Citations
13 Claims
- 1. Polymerization method for 1,4-dioxane-2,5-diones in the presence of at least one generally protic initiator and at least one catalyst, said method being characterized in that the catalyst comprises at least one organic compound devoid of metal.
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12. Polymer of a formula chosen from:
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13. Polymer comprising the repetition of two monomer units distinct from each other, at least one of said monomer units being chosen from the monomer units of formulae:
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