Alkanol alkoxylate preparation
US4396779A · kind A · utility
17Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1982 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Apr 7, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of alkanol alkoxylates, useful as nonionic surfactants, comprises steps for alkoxylating one or more alkanols having carbon number in the range from 8 to 18 by reaction with one or more alkylene oxides having carbon number in the range from 2 to 4 under alkaline pH and in the presence of one or more soluble compounds of calcium, and neutralizing the resulting alkoxylation mixture by addition thereto of an acid selected from the group consisting of propionic acid, benzoic acid, and mixtures thereof. The products are characterized by a single liquid phase of low viscosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.