Polyimide from bis(N-isoprenyl)s of aryl diamides

US5200497A · kind A · utility

Assignee

• THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINSTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION · US

Inventors

• Joseph G. Smith, Jr. · Smithfield, US
• Raphael Ottenbrite · Midlothian, US

Key dates

• Filing date: Aug 16, 1990
• Grant date: Apr 6, 1993
• Expiry date: Aug 16, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G73/126
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process and polyimide product formed by the reaction of a bismaleimide with a bis(amidediene) wherein the bis(amidediene) is formed by reacting an excess of an acid chloride with 1,4-N,N'-diisoprenyl-2,3,5,6-tetramethyl benzene.