Bromine compound production method
US5998674A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Aug 21, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K21/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Method of producing a bromine compound having an aliphatic unsaturated bond which includes reacting a compound having an aliphatic unsaturated bond represented by the following general formula (1) with bromine: EQU R.sup.1 --O--Ar.sup.1 --Y--Ar.sup.2 --O--R.sup.2 (1) to produce a bromine compound represented by the following formula (2): EQU R.sup.3 --O--Ar.sup.1 --Y--Ar.sup.2 --O--R.sup.4 (2) PA1 wherein Ar.sup.1, Ar.sup.2 and Y are the same as defined in the above general formula (1) , and R.sup.3 and R.sup.4 are groups obtained by saturating the unsaturated groups of R.sup.1 and R.sup.2 in the above general formula (1) with bromine, respectively. The reaction is carried out in the presence of a solvent which is inactive in the reaction, and a substantial amount of the heat of reaction is removed from a reaction system by the vaporization of the solvent or bromine. A high-purity bromine compound in high yield which is useful as flame retardant, can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.