4. Desulfuration and recovery of raw materials for polymer production. The report also introduces the deoxidization of terephthalic acid (PET) and the recovery of p-phenyldiacid and ethanol. 1. Claim 1: the polymer is deionized, including the function of obtaining ester of alcohol and carboxyl acid related components for the production of new polymer, which is characterized by mixing the polymer with the following mixture: (I) non-polar solvent to expand Polymers;Y (II) a preparation that breaks down the ester function, which consists of a mixture of alcohol and hydrogen oxidation; it continues to mix long enough to remove at least a portion of the polymer to obtain the related components of alcohol and carboxyl; and it is processed without alcohol and carbonate. Use external heat.
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