Nanocalcite composites

US9221970B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• William J. Schultz · North Oaks, US
• Chad A. Haraldson · Apple Valley, US
• Nathan E. Schultz · Lakeland, US
• Wendy L. Thompson · Roseville, US
• James E. Thorson · Hudson, US
• Douglas P. Goetz · Windom, US
• Steven C. Hackett · Windom, US
• James M. Nelson · Lino Lakes, US

Key dates

• Filing date: Dec 17, 2009
• Grant date: Dec 29, 2015
• Expiry date: Apr 18, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L63/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Compositions comprising surface-modified nanocalcite particles dispersed in a curable resin, and to coatings and fibrous composites incorporating such compositions are described. The surface-modifying agents include a binding group ionically associated with the calcite and a compatiblizing segment, compatible with the curable resin. The surface-modifying agent may also include a reactive group capable of reacting with the curable resin. Methods of preparing nanocalcite composites and coating a fibrous composites prepared from such nanocalcite composites are also described.