Eastman Chemical Company

Kyle Lyn Collings

Bruce Roger DeBruin

James Stewart Nelson

Bruce Roger Debruin

Isolated quantities of plastic solids having greater than 70% by weight polyethylene terephthalate (PET) also include a) from 0.1% to 10% by weight polyvinyl chloride (PVC), and a moisture content of less than 4% by weight, or b) from 0.05% to 10% or 0.1% to 4% by weight halogens, or c) from 0.1% to 4% by weight polyvinyl chloride (PVC), and at least 0.1% by weight of solid materials that do not phase change below 270° C. and 1 atm. The quantities of these solid plastics are suitable for use as feedstocks to various chemical recycling processes.

Treated waste plastic materials

Methods and systems for separating mixed plastic waste are provided herein. The methods generally comprise separating the mixed plastic waste into a PET-enriched stream and one or more PET-depleted streams. The separating may be accomplished using the combinations of two or more density separation stages. Exemplary density separation stages include sink-float separators and centrifugal force separators. The PET-enriched and PET-depleted streams may be recovered and/or directed to downstream chemical recycling processes.

Growing community of inventors

Jonesborough, TN, United States of America

Kyle Lyn Collings