Branched polydiorganosiloxane polyamide copolymers

US7915370B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Audrey A. Sherman · Windom, US
• David B. Olson · Austin, US
• Stephen A. Johnson · Woodbury, US
• Craig E. Hamer · Woodbury, US
• David S. Hays · Woodbury, US
• Richard G. Hansen · Mahtomedi, US

Key dates

• Filing date: Mar 4, 2010
• Grant date: Mar 29, 2011
• Expiry date: Mar 4, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Branched polydiorganosiloxane polyamide, block copolymers and methods of making the copolymers are provided. The method of making the copolymers involves reacting one or more amine compounds including at least one polyamine with a precursor having at least one polydiorganosiloxane segment and at least two ester groups.