Copolyetherimides

US7605222B2 · kind B2 · utility

Assignee

• Sabic Innovative Plastics B.V. · NL

Inventors

• Qing Ye · Westborough, US
• David Bruce Hall · Ballston Lake, US
• William D. Richards · Cambridge, US
• Daniel J. Brunelle · Scotia, US
• Havva Acar · Clifton Park, US

Key dates

• Filing date: Aug 22, 2005
• Grant date: Oct 20, 2009
• Expiry date: May 30, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G73/124
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Copolyetherimides compositions having high glass transition temperatures and outstanding ductility are presented. The copolyetherimides having Mw of at least 40,000 comprising isomeric bis(phthalimide) structural units within a relatively narrow range of isomer proportions exhibited Tgs of at least 240° C. and outstanding Notched Izod values. The copolyetherimides comprise oxydianiline residues and structural units of the formulas (I) and (II) (III). The copolyetherimides are characterized by a mole percentage of structural units derived from 4,4′-biphenol in a range from about 55% to about 85% of all bisphenol-derived structural units present in the copolyetherimide composition; a mole percentage of structural units derived from bisphenol A in a range from about 45% to about 15% of all bisphenol-derived structural units present in the copolyetherimide composition; and a total mole percentage of structural units derived from bisphenol A or 4,4′-biphenol of at least 95% of all bisphenol-derived structural units present in the copolyetherimide composition.