HRP940818A2 - Process for the preparation of a storage stable levulinic acid - Google Patents
Process for the preparation of a storage stable levulinic acidInfo
- Publication number
- HRP940818A2 HRP940818A2 HR940818A HRP940818A HRP940818A2 HR P940818 A2 HRP940818 A2 HR P940818A2 HR 940818 A HR940818 A HR 940818A HR P940818 A HRP940818 A HR P940818A HR P940818 A2 HRP940818 A2 HR P940818A2
- Authority
- HR
- Croatia
- Prior art keywords
- preparation
- levulinic acid
- storage stable
- reaction
- boiling point
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
A process for the preparation of colour-stable levulinic acid by hydrolysis of acetyl succinates using aqueous mineral acids, where the starting materials are treated continuously with steam in countercurrent in a reactor cascade, the reaction being carried out at above the boiling point of the alcohol produced during the reaction or above the boiling point of the aqueous azeotrope produced.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1356/89A AT392468B (en) | 1989-06-05 | 1989-06-05 | METHOD FOR PRODUCING STORAGE-STABLE LAEVULINIC ACIDS |
YU108590A YU108590A (en) | 1989-06-05 | 1990-06-04 | PROCEDURE FOR THE PREPARATION OF STORAGE LEVULINIC ACID |
Publications (1)
Publication Number | Publication Date |
---|---|
HRP940818A2 true HRP940818A2 (en) | 1996-06-30 |
Family
ID=3512120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HR940818A HRP940818A2 (en) | 1989-06-05 | 1994-10-26 | Process for the preparation of a storage stable levulinic acid |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0401532B1 (en) |
JP (1) | JP2844382B2 (en) |
AT (2) | AT392468B (en) |
CA (1) | CA2017580A1 (en) |
DD (1) | DD294934A5 (en) |
DE (2) | DE3920340A1 (en) |
DK (1) | DK0401532T3 (en) |
ES (1) | ES2039988T3 (en) |
GR (1) | GR3007472T3 (en) |
HR (1) | HRP940818A2 (en) |
HU (1) | HU206664B (en) |
PL (1) | PL162981B1 (en) |
YU (1) | YU108590A (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3752849A (en) * | 1970-03-18 | 1973-08-14 | Otsuka Kagaku Yakuhin | Manufacture of levulinic acid |
US4236021A (en) * | 1979-05-07 | 1980-11-25 | The B. F. Goodrich Company | Process for the manufacture of levulinic acid and esters |
-
1989
- 1989-06-05 AT AT1356/89A patent/AT392468B/en not_active IP Right Cessation
- 1989-06-21 DE DE3920340A patent/DE3920340A1/en not_active Withdrawn
-
1990
- 1990-05-10 DE DE9090108761T patent/DE59001067D1/en not_active Expired - Fee Related
- 1990-05-10 DK DK90108761.9T patent/DK0401532T3/en not_active Application Discontinuation
- 1990-05-10 AT AT90108761T patent/ATE87294T1/en not_active IP Right Cessation
- 1990-05-10 ES ES199090108761T patent/ES2039988T3/en not_active Expired - Lifetime
- 1990-05-10 EP EP90108761A patent/EP0401532B1/en not_active Expired - Lifetime
- 1990-05-25 CA CA002017580A patent/CA2017580A1/en not_active Abandoned
- 1990-06-01 DD DD90341258A patent/DD294934A5/en not_active IP Right Cessation
- 1990-06-01 HU HU903300A patent/HU206664B/en not_active IP Right Cessation
- 1990-06-04 YU YU108590A patent/YU108590A/en unknown
- 1990-06-04 JP JP2144594A patent/JP2844382B2/en not_active Expired - Fee Related
- 1990-06-04 PL PL28547790A patent/PL162981B1/en unknown
-
1993
- 1993-03-26 GR GR920402304T patent/GR3007472T3/el unknown
-
1994
- 1994-10-26 HR HR940818A patent/HRP940818A2/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
HU206664B (en) | 1992-12-28 |
PL285477A1 (en) | 1991-01-28 |
JPH03101636A (en) | 1991-04-26 |
HUT54967A (en) | 1991-04-29 |
DE59001067D1 (en) | 1993-04-29 |
DK0401532T3 (en) | 1993-04-19 |
PL162981B1 (en) | 1994-01-31 |
GR3007472T3 (en) | 1993-07-30 |
AT392468B (en) | 1991-04-10 |
YU108590A (en) | 1992-09-07 |
EP0401532B1 (en) | 1993-03-24 |
ATA135689A (en) | 1990-09-15 |
CA2017580A1 (en) | 1990-12-05 |
DE3920340A1 (en) | 1991-01-10 |
ATE87294T1 (en) | 1993-04-15 |
JP2844382B2 (en) | 1999-01-06 |
ES2039988T3 (en) | 1993-10-01 |
DD294934A5 (en) | 1991-10-17 |
EP0401532A1 (en) | 1990-12-12 |
HU903300D0 (en) | 1990-10-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A1OB | Publication of a patent application | ||
AIPI | Request for the grant of a patent on the basis of a substantive examination of a patent application | ||
OBST | Application withdrawn |