Methods of making modified condensation polymers

US6417239B1 · kind B1 · utility

Assignee

• Eastman Chemical Company · US

Inventors

• David L. Murray · Rochester, US
• Allan S. Jones · Kingsport, US
• Wesley Raymond Hale · Kingsport, US
• William R. Darnell · Big Stone Gap, US
• Douglas Weldon Carico · Kingsport, US
• Sara Stanley Wells · Kingsport, US

Key dates

• Filing date: Jul 17, 2000
• Grant date: Jul 9, 2002
• Expiry date: Jul 17, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/62
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention pertains to methods for preparing modified condensation polymers wherein the steps include: (a) preparing a polymer colloid system comprising a first polymer dispersed in a liquid continuous phase; (b) introducing the polymer colloid system into a glycolysis reaction medium prior to or during a glycolysis reaction wherein the glycolysis reaction medium comprises a polyester, copolyester, polyesteramide, polycarbonate or a mixture thereof; wherein the glycolysis reaction medium optionally comprises a diol component; and polymerizing the fully or partially glycolyzed polyester, copolyester, polyesteramide, polycarbonate or mixture thereof, thereby providing a condensation polymer/first polymer matrix.