Process for recycling a mineral fiber material, using a solution to decompose the binder of this material and oligomers obtained

Abstract

The present invention relates to a process for recycling a material in the form of a veil, mat, or felt made of mineral fibers bonded with a binder comprising at least one thermosetting resin. The process includes a step of contacting the material with at least one amine in solution in a polar aprotic solvent at a temperature of at least 50 °C for a sufficient duration to decompose the binder. The invention further relates to the use of a solution comprising such an amine and such a polar aprotic solvent to decompose such a binder contained in such a material. Finally, the invention relates to an oligomer obtainable by such a process.