| 摘要 |
In order to degrade the wastes of unsaturated polyesters comprised of mixtures, in a non-copolymerized condition, obtained as fabrication wastes, of unsaturated polyester, of at least one cross-linking monomer, of at least one free radical-forming catalyst and, optionally, of at least one mineral load and/or of at least one reinforcement agent of the fiber type and/or conventional additives and adjuvants, or yet consisting of those same mixtures, charged and reinforced, in a copolymerized condition, obtained as wastes, rejects or end-of-life parts, the wastes to be treated are reduced into small particles, the thus devided wastes are then suspended in a medium comprising water and/or at least one alcohol, and the reaction of said wastes with the water and/or the alcohol or alcohols is conducted in the presence of, as catalyst, at least one enzyme whose active site recognizes the ester function of the polyester or polyesters subjected to the treatment in the treatment medium up to the production of products of low molecular mass, which may be used again in conventional applications. |
