| 摘要 |
A polymer layer of polyester or polyvinyl chloride is recovered from a multilayered scrap or waste chip material by contacting the chip material with an aqueous solution containing a base metal hydroxide and a reagent selected from the group consisting of a salt, an amine, and an oxidizing agent. The removal process is accelerated by using, either singularly or in combination, an alkyl dimethyl benzyl ammonium chloride, heat, or agitation. Thereafter the polymer layer is isolated and recovered.
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