Alkoxylation process using catalyst of the lanthanum series
US5059719A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Mar 23, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/03
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alkylene oxide adducts of organic compounds having active hydrogen atoms are prepared by a process which comprises contacting and reacting an alkylene oxide reactant comprising one or more C.sub.2 to C.sub.4 vicinal alkylene oxides with an active hydrogen containing reactant comprising one or more compounds having active hydrogen atoms in the presence of a catalytically effective amount of one or more soluble basic compounds of one or more elements of the lanthanum series (atomic numbers 57-71, inclusive). The product alkoxylates are known to be useful, for instance, as nonionic surfactants, wetting and emulsifying agents, solvents, and chemical intermediates. When the process is applied to the preparation of alkylene oxide, particularly ethylene oxide, adducts of alkanols, particularly primary alkanols in the C.sub.6 to C.sub.24 range, the product is a valuable narrow range nonionic surfactant, characterized by relatively narrow distribution of alkylene oxide adducts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.