| 摘要 |
PURPOSE: A process for recovering depolymerization products from polymers such as polyesters, polyamides, and polyesteramides, especially when the starting polymer content is less than about 98% is provided, to maximize the yield of recovered products and treat high content contaminated polymers. CONSTITUTION: A monomer recovery process for contaminated polymers comprises the steps of: (a) depolymerizing a starting polymer by means of a depolymerization agent to prepare volatile reaction products; (b) vapor-phase stripping the volatile reaction products, to produce a stripping agent/product distillate; and (c) recovering the reaction products from the stripping agent/product distillate while leaving non-volatile residue material with a support material. The depolymerization and vapor phase recovery of monomers and other reaction products are conducted in the presence of a solid support.
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