Alkali-metal silicate binders and methods of manufacture

US4162169A · kind A · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventor

• John B. Schutt · Silver Spring, US

Key dates

• Filing date: Dec 21, 1977
• Grant date: Jul 24, 1979
• Expiry date: Dec 21, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D1/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A paint binder utilizing a potassium or sodium silicate dispersion having a silicon dioxide to alkali-metal oxide mol ratio of from 4.8:1 to 6.0:1, the binder exhibiting stability during both manufacture and storage. The process of making the binder is predictable and repeatable and the binder may be made with inexpensive components. The high mol ratio is achieved with the inclusion of a silicon dioxide hydrogel. The binder, which also employs a silicone, is in the final form of a hydrogel sol.