Method for producing functionalised telechelic oligomers
AssigneesCentre National De La Recherche Scientifique, Universite de Caen Basse Normandie, Universite Du Maine
InventorsJean-Francois Pilard, Arnaud Nourry, Isabelle Dez, Annie-Claude Gaumont, Ali Mouawia
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Abstract
This invention relates to a method for producing functionalized telechelic oligomers, comprising two steps. The first step relates to bringing a raw material comprising at least one high-molecular-weight polymer comprising at least two unsaturations, into contact with a solution comprising at least one metathesis catalyst and at least one functionalizing agent. The second step relates to the separation of the functionalized telechelic oligomers produced by the metathesis reaction in ionic liquid medium of the first step.
Claims12
Method for producing functionalized telechelic oligomers, comprising:
- a) bringing a raw material consisting of at least one high-molecular-weight polymer comprising at least two unsaturations, into contact with a solution comprising at least one ionic liquid, at least one metathesis catalyst and at least one functionalising agent chosen from hydrogenocarbonated molecules having a symmetrical disubstituted carbon-carbon double bond and two functions having a general formula:
- wherein, R can be a group:
- —COR, R being chosen from a group comprising hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl;
- —COOR, R being chosen from a group comprising hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, methyl-1,3-dioxolanone, methyl-oxirane;
- —OR, R being chosen from a group comprising hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, methyl-1,3-dioxolanone, methyl-oxirane;
- —NR′R″, R′ and R″ being identical or different, each one chosen from a group comprising hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, acetyl, tert-butyl-acetyl;
- —[N+R′R″R′″,X−], R′, R″, R′″ being identical or different and each one chosen from a group comprising substituted or unsubstituted alkyl, substituted or unsubstituted aryl and X− being an anion chosen from the group comprising fluoride, chloride, iodide, bromide, tosylate, triflate;
- —SR, R being chosen from a group comprising hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl;
- —C≡N;
- —C(═N)R, R being chosen from a group comprising hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl;
- —SO2R, R being chosen from a group comprising hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl;
- —SO3R, R being chosen from a group comprising hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl;
- —NO2;
- and
- b) the separation of the functionalized telechelic oligomers produced by the metathesis reaction in an ionic liquid medium of the step a).
Dependencies are inferred from the claim text.