GB1150418A - Purifying Laurolactam - Google Patents
Purifying LaurolactamInfo
- Publication number
- GB1150418A GB1150418A GB3881766A GB3881766A GB1150418A GB 1150418 A GB1150418 A GB 1150418A GB 3881766 A GB3881766 A GB 3881766A GB 3881766 A GB3881766 A GB 3881766A GB 1150418 A GB1150418 A GB 1150418A
- Authority
- GB
- United Kingdom
- Prior art keywords
- laurolactam
- aqueous solution
- water treatment
- treatment
- weight
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/16—Separation or purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,150,418. Purifying laurolactam. BADISCHE ANILIN- & SODA-FABRIK A.G. 31 Aug., 1966 [1 Sept., 1965], No. 38817/66. Heading C2C. Laurolactam produced by the rearrangement of cyclodecanone oxime or a salt thereof which has been obtained by reaction of cyclododecane with NOCl or with NO and Cl 2 , in the presence or absence of HCl is purified by treatment at temperatures above 160‹ C. with an aqueous solution of an alkali metal hydroxide and the thus treated laurolactam is subjected to a water treatment and then to fractional distillation. The laurolactam may undergo the water treatment in the molten form, as a finely-divided solid, or may be dissolved in an inert organic solvent which is immiscible with water, e.g. benzene, toluene, xylene, CH 2 Cl 2 , CHCl 3 , CCl 4 or 1,2-dichloroethane. The hydroxide is preferably used in amounts of 2 to 3% by weight of the lactam and as a 50% by weight aqueous solution. The process may be carried out continuously.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB0083530 | 1965-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1150418A true GB1150418A (en) | 1969-04-30 |
Family
ID=6982011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3881766A Expired GB1150418A (en) | 1965-09-01 | 1966-08-31 | Purifying Laurolactam |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE686119A (en) |
| CH (1) | CH471128A (en) |
| GB (1) | GB1150418A (en) |
-
1966
- 1966-08-25 CH CH1231566A patent/CH471128A/en not_active IP Right Cessation
- 1966-08-29 BE BE686119D patent/BE686119A/xx unknown
- 1966-08-31 GB GB3881766A patent/GB1150418A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE686119A (en) | 1967-02-28 |
| CH471128A (en) | 1969-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 416 | Proceeding under section 16 patents act 1949 | ||
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |