| abstract |
A method for preparing a poly (butylene terephthalate-co-adipate) copolymer comprising 1,4-butanediol, an adipic acid component, an aromatic dicarboxy compound derived from polyethylene terephthalate, and a polyester component residue. Polymerizing under conditions effective to produce poly (butylene terephthalate-co-adipate) oligomers in the presence of a catalyst, adding a quencher, and quenching poly (butylene terephthalate-co-adipate) oligomers A method by reacting with a chain extender. |