A METHOD FOR RECOVERING POLYMER FROM PRINTED PETG SUBSTRATES
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United States of America Patent
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Aug 19, 2015
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Aug 23, 2014
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Abstract
A method for recovering polymer from printed glycol-modified poly(ethylene tefephtalate) (PETG) substrates, comprising the steps of: providing a printed PETG substrate with the print layer comprising pigments and/or dyes dispersed in a binder matrix; chopping the substrate into irregular strips and; treating the chopped substrate with a treating composition; wherein the treating composition is an aqueous azeotrope of an organic low molecular weight, polar solvent selected from the group consisting of ketones, aldehydes, alcohols and esters.
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