Foaming agents for gypsum board manufacture
US4156615A · kind A · utility
53Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 3, 1978 |
| Grant date | May 29, 1979 |
| Priority date | — |
| Expiry date | Jan 3, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/0062
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to a novel means of manufacture of gypsum board. The improvement herein comprises the use of sodium and/or ammonium salts of ethoxylated, sulfated alcohols as foaming agents, said alcohols being a mixture of primary, linear alcohols having an average chain length of 9 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.