FI921844A - Process for the purification of 2,6-diisopropylphenol - Google Patents
Process for the purification of 2,6-diisopropylphenol Download PDFInfo
- Publication number
- FI921844A FI921844A FI921844A FI921844A FI921844A FI 921844 A FI921844 A FI 921844A FI 921844 A FI921844 A FI 921844A FI 921844 A FI921844 A FI 921844A FI 921844 A FI921844 A FI 921844A
- Authority
- FI
- Finland
- Prior art keywords
- diisopropylphenol
- propofol
- degree
- purification
- solvent
- Prior art date
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a novel process for purifying 2,6-diisopropylphenol (propofol). The invention is characterised in that a crude product which his obtained from its preparation is crystallised at a temperature at which propofol crystallises but the isomers and other phenol derivatives which are formed in the reaction are still liquid, i.e. at -25 - +18 degree C, in particular at -20 -10 degree C, without solvent or by means of using a suitable solvent, such as hexane or petroleum ether.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI921844A FI92317C (en) | 1991-04-30 | 1992-04-24 | Process for the purification of 2,6-diisopropylphenol |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI912102 | 1991-04-30 | ||
FI912102A FI912102A (en) | 1991-04-30 | 1991-04-30 | FOERFARANDE FOER RENING AV 2,6-DIISOPROPYLFENOL |
FI921844A FI92317C (en) | 1991-04-30 | 1992-04-24 | Process for the purification of 2,6-diisopropylphenol |
FI921844 | 1992-04-24 |
Publications (4)
Publication Number | Publication Date |
---|---|
FI921844A0 FI921844A0 (en) | 1992-04-24 |
FI921844A true FI921844A (en) | 1992-10-31 |
FI92317B FI92317B (en) | 1994-07-15 |
FI92317C FI92317C (en) | 1994-10-25 |
Family
ID=26158954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI921844A FI92317C (en) | 1991-04-30 | 1992-04-24 | Process for the purification of 2,6-diisopropylphenol |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI92317C (en) |
-
1992
- 1992-04-24 FI FI921844A patent/FI92317C/en active
Also Published As
Publication number | Publication date |
---|---|
FI92317C (en) | 1994-10-25 |
FI921844A0 (en) | 1992-04-24 |
FI92317B (en) | 1994-07-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | Publication of examined application | ||
PC | Transfer of assignment of patent |
Owner name: BAYER SCHERING PHARMA OY Free format text: BAYER SCHERING PHARMA OY |