Foam generating compositions
US4676835A · kind A · utility
40Cited by
10References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1986 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Jul 14, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/0062
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The sodium and/or ammonium salts of a mixture of n-alkyl oxyethylated sulfuric acids in aqueous solution, wherein all the compounds have the same molecular formula CH.sub.3 (CH.sub.2).sub.x CH.sub.2 (OCH.sub.2 CH.sub.2).sub.y OSO.sub.3.sup.- M.sup.+, M.sup.+ being either the sodium or ammonium cation, x being an integer from about 6 to 12, and y being an integer from about 1 to 3.5, a major portion of the mixture comprising compounds where x equals 6-8 and a minor portion of the mixture comprising compounds where x equals 10-12; these mixtures being capable of generating foam of relatively large volume and high stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.