NL122797C - - Google Patents
Info
- Publication number
- NL122797C NL122797C NL122797DA NL122797C NL 122797 C NL122797 C NL 122797C NL 122797D A NL122797D A NL 122797DA NL 122797 C NL122797 C NL 122797C
- Authority
- NL
- Netherlands
- Prior art keywords
- bromine
- bromination
- mixture
- chlorine
- reaction mixture
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/18—Preparation of ethers by reactions not forming ether-oxygen bonds
- C07C41/22—Preparation of ethers by reactions not forming ether-oxygen bonds by introduction of halogens; by substitution of halogen atoms by other halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
- C07C17/12—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms in the ring of aromatic compounds
Abstract
Aromatic compounds having a plurality of non-condensed benzene nucleii in the molecule are converted into derivatives containing at least 4 bromine atoms in the molecule by treatment with bromine while at least partly dissolved in an olefine dihalide solvent comprising ethylene, propylene, butylene or isobutylene dichloride or dibromide or chlorobromide or a mixture thereof; the bromination is effected in the presence of a halogenating catalyst and, after the bromination, an addition of ethylene, propylene, butylene or isobutylene or a mixture thereof is made to the reaction mixture in an amount at least equimolar with the excess of bromine in the mixture. Specified halogenating catalysts are iron or aluminium or salts thereof and (or) iodine. The hydrogen bromide formed in the bromination may be oxidized to bromine by means of chlorine, which may be added in stages to the reaction mixture or mixed with the bromine or introduced into the reaction vessel with the bromine, but in any event a slight excess of bromine over chlorine is maintained until the end of the bromination, when sufficient chlorine may be added to make the molar ratio of chlorine to bromine about 1. The reaction mixture may contain 0.005-1% by weight of water, and the reaction may be effected at 10-60 DEG C. The products are useful for flame-proofing polyolefines and other plastics. Examples are given of the bromination of diphenyl ether to yield a pentabromodiphenyl ether, and reference is made also to the bromination of diphenyl and of di-, tri- and tetraphenylmethane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC28110A DE1193510B (en) | 1962-10-06 | 1962-10-06 | Process for the preparation of bromine derivatives of diphenyl, diphenyl ether, diphenyl phenyl ether or di-, tri- or tetraphenyl methane with 4 or more bromine atoms per mol |
| DEC29807A DE1197468B (en) | 1962-10-06 | 1963-04-30 | Process for the preparation of bromine derivatives of diphenyl, diphenyl ether or di-, tri- or tetraphenyl methane with 4 or more bromine atoms per molecule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL122797C true NL122797C (en) |
Family
ID=25969585
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL122797D NL122797C (en) | 1962-10-06 | ||
| NL298701D NL298701A (en) | 1962-10-06 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL298701D NL298701A (en) | 1962-10-06 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE638269A (en) |
| DE (3) | DE1193510B (en) |
| GB (1) | GB991067A (en) |
| NL (2) | NL298701A (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1933486B2 (en) * | 1969-07-02 | 1977-07-07 | Chemische Fabrik Kalk GmbH, 5000 Köln | METHOD FOR MANUFACTURING HEXABROMBENZENE |
| US3711563A (en) * | 1970-06-29 | 1973-01-16 | Hooker Chemical Corp | Production of halogenated halocyclopentadiene adducts of styrene |
| US3714274A (en) * | 1970-06-29 | 1973-01-30 | Hooker Chemical Corp | Process for preparing bromophenyl norbornenes |
| US3711562A (en) * | 1970-06-29 | 1973-01-16 | Hooker Chemical Corp | Process for preparing brominated styrene halocyclopentadiene compounds |
| DE3326343A1 (en) * | 1983-07-21 | 1985-01-31 | Toyo Soda Manufacturing Co., Ltd., Shinnanyo, Yamaguchi | Process for the preparation of decabromodiphenyl ether |
| FR2584395B1 (en) * | 1985-07-03 | 1987-09-25 | Atochem | PROCESS FOR THE PREPARATION OF DECABROMODIPHENYLETHER |
| FR2584396B1 (en) * | 1985-07-03 | 1987-09-25 | Atochem | PROCESS FOR THE PREPARATION OF BROMINATED DIPHENYLETHER DERIVATIVES |
| US5003117A (en) * | 1989-08-03 | 1991-03-26 | Ethyl Corporation | Process for decabromodiphenyl methane |
| US5136107A (en) * | 1990-06-04 | 1992-08-04 | Ethyl Corporation | Process for halogenating aromatic compounds |
| US5401890A (en) * | 1990-07-30 | 1995-03-28 | Albemarle Corporation | Process and apparatus for heat treating halogenated compounds |
| US5124496A (en) * | 1990-11-01 | 1992-06-23 | Ethyl Corporation | Process for decabromodiphenylalkane predominant product |
| US5055235A (en) * | 1990-12-12 | 1991-10-08 | Ethyl Corporation | Bromination process |
| US5324874A (en) * | 1992-05-26 | 1994-06-28 | Ethyl Corporation | Process for a decarbromodiphenylethane predominate product having enhanced whiteness |
| US6518468B1 (en) | 1994-09-16 | 2003-02-11 | Albemarle Corporation | Bromination process |
| ES2224420T3 (en) * | 1997-08-01 | 2005-03-01 | Alfred E. Mann Foundation For Scientific Research | IMPLANTABLE DEVICE WITH IMPROVED POWER AND BATTERY RECHARGE CONFIGURATION. |
| US6308101B1 (en) | 1998-07-31 | 2001-10-23 | Advanced Bionics Corporation | Fully implantable cochlear implant system |
| US6743825B1 (en) | 2001-08-03 | 2004-06-01 | Albemarle Corporation | Poly(bromoaryl)alkane additives and methods for their preparation and use |
| EP1456156B1 (en) | 2001-12-21 | 2010-03-31 | Chemtura Corporation | Method and apparatus for producing decabromodiphenyl alkanes |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1050742B (en) * | 1959-02-19 | The Dow Chemical Company, Midland, Mich. (V. St. A.) | Continuous process for the production of alkylene bromides | |
| GB491792A (en) * | 1937-03-04 | 1938-09-05 | William Henry Moss | Improvements in or relating to compositions of matter containing film-forming polymeric esters and ethers |
| FR1270333A (en) * | 1960-10-13 | 1961-08-25 | Bayer Ag | Process for preparing brominated phenol on nuclei |
-
0
- DE DENDAT991067D patent/DE991067C/de active Active
- BE BE638269D patent/BE638269A/xx unknown
- NL NL122797D patent/NL122797C/xx active
- NL NL298701D patent/NL298701A/xx unknown
-
1962
- 1962-10-06 DE DEC28110A patent/DE1193510B/en active Pending
-
1963
- 1963-04-30 DE DEC29807A patent/DE1197468B/en active Pending
- 1963-09-26 GB GB37960/63A patent/GB991067A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE638269A (en) | |
| GB991067A (en) | 1965-05-05 |
| DE991067C (en) | |
| NL298701A (en) | |
| DE1197468B (en) | 1965-07-29 |
| DE1193510B (en) | 1965-05-26 |
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