Method for Synthesizing Polyesters in an Acidic Ionic Liquid Medium

The present invention relates to a method for synthesizing polyesters or copolyesters having a mean molar mass, in mass MW, greater than 10000, by means of a direct polyesterification reaction between a diacid, diester, hydroxyacid, or hydroxyester and a diol, or between hydroxyacids or hydroxyesters, said method being characterized in that said polyesterification reaction is carried out at a temperature of 60 to 150 DEG C at atmospheric pressure in a reaction medium including at least one acidic ionic liquid consisting of an anion and a cation, the electrical charges of which balance each other out, and wherein at least the cation is a strong acid according to the Brönsted definition, or comprises a grouping that is a strong acid according to the Brönsted definition.

Patents:
WO 2,011,012,814

Inventor(s): FRADET ALAIN [FR]; LEFEBVRE HERVE [FR]; BAZUREAU JEAN-PIERRE [FR]; PAQUIN LUDOVIC [FR]; CARRIE DANIEL [FR]

Type of Offer: Sale



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