Synthesis of copolyimides containing fluorine and silicon surface modifying agents

US10808079B2 · kind B2 · utility

Assignee

• United States of America as represented by the Administrator of NASA · US

Inventors

• John W. Connell · Newport News, US
• Christopher J. Wohl, Jr. · Portsmouth, US
• Jereme R. Doss · Hampton, US
• Allison M. Crow · Ceres, US
• William T. Kim · Williamsburg, US
• Yi Lin · New Taipei, TW

Key dates

• Filing date: Mar 24, 2016
• Grant date: Oct 20, 2020
• Expiry date: Jun 24, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D183/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Various embodiments provide random copolyimides that may possess the mechanical, thermal, chemical and optical properties associated with polyimides yet achieve a low energy surface. In various embodiments, the copolyimides may be prepared using a minor amounts of a diamino terminated fluorinated alkyl ether oligomer and a diamino terminated siloxane oligomer. The various embodiments include processes for making the copolyimides containing fluorine and silicon surface modifying agents and anisotropic coatings and articles of manufacture from them. Thus the coatings and articles of manufacture made with the copolyimides of the various embodiments may be characterized as having an anisotropic fluorine and silicon composition and low surface energy.