Method for producing hydrophobic aerogels

US6005012A · kind A · utility

Assignee

• The Regents of the University of California · US

Inventors

• Lawrence W. Hrubesh · Pleasanton, US
• John F. Poco · Livermore, US
• Paul R. Coronado · Livermore, US

Key dates

• Filing date: Oct 29, 1998
• Grant date: Dec 21, 1999
• Expiry date: Oct 29, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B33/159
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for treating a dried monolithic aerogel containing non-dispersed particles, with an organometallic surface modifying agent to produce hydrophobic aerogels. The dried, porous hydrophobic aerogels contain a protective layer of alkyl groups, such as methyl groups, on the modified surfaces of the pores of the aerogel. The alkyl groups at the aerogel surface typically contain at least one carbon-metal bond per group.