Process for producing low density gel compositions

US6315971A · kind A · utility

Assignee

• Cabot Corporation · US

Inventors

• Stephen Wallace · Albuquerque, US
• Douglas M. Smith · Albuquerque, US
• William C. Ackerman · Albuquerque, US

Key dates

• Filing date: Apr 9, 1997
• Grant date: Nov 13, 2001
• Expiry date: Apr 9, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J13/0091
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Disclosed are processes for producing gel composition which may be utilized to produce low density gel compositions without the need for supercritical drying, thermal treatment or surface treatment. The processes comprise drying a wet gel comprising gel solids and a drying agent to remove the drying agent while minimizing shrinkage of the gel during drying.