Process for bleaching fatty alcohol alkyl polyglycoside solutions
US5420262A · kind A · utility
6Cited by
10References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1993 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Aug 12, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H15/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Fatty alcohol--alkyl polyglycoside solutions initially obtained in the preparation of alkyl polyglycosides are treated with alkali, temperature controlled and subsequently vacuum distilled. In this process, the fatty alcohol--alkyl polyglycoside solutions are first adjusted to a pH of 10 to 14 with alkali, after which their temperature is maintained at 60.degree. to 120.degree. C. for at least 2 hours. The fatty alcohol is then removed by distillation in vacuo at a reduced pH of 7 to 9.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.