Polyfluoropolyethers having pendant perfluoroalkoxy groups

US4743300A · kind A · utility

Assignee

• Minnesota Mining and Manufacturing Company · US

Inventors

• Steven P. Brinduse · Windom, US
• Anthony B. Clinch · Oakdale, US
• Daniel K. McIntyre · Windom, US
• Allen L. Noreen · Lake Elmo, US
• Mark J. Pellerite · Woodbury, US

Key dates

• Filing date: Aug 29, 1986
• Grant date: May 10, 1988
• Expiry date: Aug 29, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Normally liquid peroxidic poly(perfluorooxyalkylene) compositions comprising a mixture of peroxidic poly(perfluorooxyalkylene) compounds, derivatives of the poly(perfluorooxyalkylene) compositions comprising a mixture of non-peroxidic polyfluoropolyether compounds, and derivatives of the polyfluoropolyether compositions comprising functional and non-functional derivatives of the polyfluoropolyether compositions are provided. Each peroxidic poly(perfluorooxyalkylene) compound comprises a backbone of randomly distributed perfluorooxyalkylene units, represented by the formulas --CF.sub.2 O--, ##STR1## and --O--, which when bonded to and --O-- of any of the perfluorooxyalkylene units, forms a peroxy group, --O--O--, which imparts the peroxidic characteristics to the material, and backbone-pendant perfluoroalkoxy groups or perfluoroalkoxy groups substituted with one or more ether oxygen atoms, the terminal ether oxygen atoms of which are bonded to carbon atoms of the ##STR2## backbone units.