Process for the surface modification of particles

US8394977B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Grant F. Tiefenbruck · Cottage Grove, US
• Matthew N. Archibald · Windom, US
• James M. Nelson · Lino Lakes, US
• Wendy L. Thompson · Roseville, US
• William J. Schultz · North Oaks, US
• Peter D. Condo · Lake Elmo, US
• Brant U. Kolb · Afton, US
• Jimmie R. Baran, Jr. · Prescott, US

Key dates

• Filing date: Mar 26, 2009
• Grant date: Mar 12, 2013
• Expiry date: Feb 3, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/64
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method for the preparation of functionalized particles includes providing a feedstock that includes particles, a surface treatment agent reactive with the particles and solvent. The feedstock is direct through a continuous hydrothermal reactor maintained at a temperature sufficient to react the particles with the surface treatment agents to thereby provide functionalized particles. The method of the invention is capable of providing the functionalized particles in less than about 4 hours.