GB357743A - Improvements in manufacture of polychlornaphthalenes - Google Patents
Improvements in manufacture of polychlornaphthalenesInfo
- Publication number
- GB357743A GB357743A GB2583630A GB2583630A GB357743A GB 357743 A GB357743 A GB 357743A GB 2583630 A GB2583630 A GB 2583630A GB 2583630 A GB2583630 A GB 2583630A GB 357743 A GB357743 A GB 357743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polychlornaphthalenes
- halogen
- stages
- naphthalene
- ferric chloride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Polychlornaphthalenes are produced by chlorinating naphthalene in two stages, first in presence of a halogen-carrying catalyst at temperatures between 85 DEG and 110 DEG C. and secondly in the presence of a halogen-carrying catalyst above 130 DEG C. Suitable catalysts are ferric chloride, antimony tri-or penta-chloride. In an example anhydrous ferric chloride is added to molten naphthalene and the mixture is chlorinated in two stages. The products may be heated with a basic substance such as lime and distilled preferably under reduced pressure. Specification 291,849, [Class 2 (iii), Dyes &c.], is referred to.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE382144D BE382144A (en) | 1930-08-29 | ||
GB2583630A GB357743A (en) | 1930-08-29 | 1930-08-29 | Improvements in manufacture of polychlornaphthalenes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2583630A GB357743A (en) | 1930-08-29 | 1930-08-29 | Improvements in manufacture of polychlornaphthalenes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB357743A true GB357743A (en) | 1931-10-01 |
Family
ID=10234132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2583630A Expired GB357743A (en) | 1930-08-29 | 1930-08-29 | Improvements in manufacture of polychlornaphthalenes |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE382144A (en) |
GB (1) | GB357743A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3051763A (en) * | 1960-07-22 | 1962-08-28 | Richfield Oil Corp | Preparation of chlorinated naphthalenes |
-
0
- BE BE382144D patent/BE382144A/xx unknown
-
1930
- 1930-08-29 GB GB2583630A patent/GB357743A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3051763A (en) * | 1960-07-22 | 1962-08-28 | Richfield Oil Corp | Preparation of chlorinated naphthalenes |
Also Published As
Publication number | Publication date |
---|---|
BE382144A (en) |
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