Purification of propylene oxide by treatment with calcium hydroxide in glycerol or sugar water
US4691034A · kind A · utility
11Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1986 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | Apr 14, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D301/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methyl formate is removed from propylene oxide by treatment with aqueous calcium hydroxide slurry. Calcium hydroxide solubility is increased by adding a solubilizer selected from the group consisting of sucrose, fructose, maltose, glycerol and mixtures thereof. Methyl formate hydrolysis rate is improved by propylene oxide/water ratio control. Addition of an aldehyde scavenger improves propylene oxide purity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.