Barium oxide catalyzed ethoxylation
US4239917A · kind A · utility
31Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Jul 2, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C43/13
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Barium oxide is used as an ethoxylation catalyst for the reaction of ethylene oxide and alkanols of all classes. The reaction is carried out at temperatures of from about 200.degree. to about 500.degree. F. to yield the ethoxylated product. The product obtained has a very narrow, high adduct distribution with low levels of by-products and unreacted free alcohols. Calcium and magnesium oxides show no catalytic effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.