| 摘要 |
The present invention relates to a process of recovering aromatic dicarboxylic acids with low metal contaminants from manufactured articles, such as beverage bottles, fibers and films, comprising aromatic polyesters, whether or not those articles are contaminated with PVC or chlorinated compounds, or from waste from processing of these polyesters. In particular, the invention relates to the recovery of terephthalic acid, isophthalic acid and 2,6-naphthalene dicarboxylic acid from bottles for recycling which are made of PET, PEN or aromatic polyester copolymers.
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