United States Patent
US Patent 3933514: High strength, water resistant silicate foam
US 3933514 · granted 1976-01-20
| Patent Number | 3933514 |
|---|---|
| Title | High strength, water resistant silicate foam |
| Filed | 1973-04-30 |
| Granted | 1976-01-20 |
| Inventor(s) | William P. Banks, Jon R. Carlson, Donald E. Becker |
| Assignee | Continental Oil Co |
| CPC Classification | C04B32/005, C04B28/24, C04B28/00 |
| Number of Claims | 1 |
Abstract
An alkali metal silicate foam composition comprising preferably sodium silicate, cementing agent such as sodium silicofluoride, gelling agent such as linoleic acid and filler such as glass fiber mixed with water and blowing agent to provide foams having high strength, high water resistance and low shrinkage upon curing. Amides and halo-alcohols are used as gelling agents in preferred compositions for exceptional strength and water resistance. Vermiculite and perlite are preferred fillers for a low shrinkage foam composition.
Claims Summary
1. A composition for producing a fire-resistant, high strength, low shrinkage silicate foam having high water resistance being an aqueous silicate dispersion mixed with about 45-60 parts water on the basis of 100 parts by weight of foam comprising the following ingredients mixed with said water;a. about 25-36 parts water soluble alkali metal silicate;