Method for converting polyhydroxylated aliphatic hydrocarbons into chlorohydrins
US7557253B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2006 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | May 19, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D303/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for preparing a chlorohydrin, wherein: (a) a polyhydroxylated aliphatic hydrocarbon, an ester of a polyhydroxylated aliphatic hydrocarbon or a mixture thereof is reacted with a chlorinating agent so as to give a mixture containing chlorohydrin, chlorohydrin esters and water, (b) at least a fraction of the mixture obtained in step (a) is subjected to a distillation and/or stripping treatment so as to give a part concentrated with water, with chlorohydrin and with chlorohydrin esters, (c) at least a fraction of the part obtained in step (b) is subjected to a separating operation in the presence of at least one additive so as to give a portion concentrated with chlorohydrin and with chlorohydrin esters and containing less than 40% by weight of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.