| http://www.w3.org/ns/prov#value | - of ease of distillation, ease of hydrolysis and ease of direct condensation reaction, although methyl glycolate is most preferred.When other components such as the solvent and solubilizer are incorporated in the depolymerization reaction system, the content of alkaline metal ions contained therein should preferably be reduced to 0.001% by mass or lower, and especially toless than 0.001% by mass.
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