Branched and hyperbranched polyetherimides

US6333390A · kind A · utility

Assignee

• The Board of Trustees of the University of Illinois · US

Inventors

• Jeffrey S. Moore · Savoy, US
• D. Scott Thompson · Woodbury, US
• Larry J. Markoski · Raleigh, US

Key dates

• Filing date: Nov 5, 1999
• Grant date: Dec 25, 2001
• Expiry date: Nov 5, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J179/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Branched or hyperbranched polymeric structures which contain at least one etherimide branch point, more specifically from stable A.sub.1 B.sub.n (where n.gtoreq.2), AB, AA, and BB monomers; A.sub.m end-capping agents (where m=1); B.sub.n cores (where n.gtoreq.1) and combinations thereof; with controllable degrees of branching (DB=0-1), molecular architectures, end-group compositions, along with methods for their preparation.