Abstract: A method of making a metal-terephthalate polymer from polyester ethylene terephthalate includes reacting polyester ethylene terephthalate with a metal compound in a non-aqueous melt environment at an elevated temperature. The elevated temperature will be greater than 270° C., and preferably rises to a temperature of about 520° C. The method is preferably carried out at a low pressure. The method may be used in the recycling of passenger vehicle tire shreds to produce a carbon black rrich ppowder that is enriched in the metal-terephthalate polymer.
Type:
Grant
Filed:
April 11, 2008
Date of Patent:
November 2, 2010
Assignee:
Chem Engineering Energy, LLC
Inventors:
Daniel Eric Steinmeyer, Alan Marc Levine, James Matthew Williams