KR940014290A - Method for preparing glycolic acid and glycolic acid esters - Google Patents
Method for preparing glycolic acid and glycolic acid esters Download PDFInfo
- Publication number
- KR940014290A KR940014290A KR1019920024977A KR920024977A KR940014290A KR 940014290 A KR940014290 A KR 940014290A KR 1019920024977 A KR1019920024977 A KR 1019920024977A KR 920024977 A KR920024977 A KR 920024977A KR 940014290 A KR940014290 A KR 940014290A
- Authority
- KR
- South Korea
- Prior art keywords
- water
- formaldehyde
- glycolic acid
- methanol
- inert solvent
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
본 발명은 포름알데히드의 카르보닐화 반응에 의하여 글리콜산을 제조하는 방법 및 그의 유도체인 글리콜산 에스테르를 제조하는 방법에 관한 것이다. 본 발명의 방법에서는 수용성 불활성 용매중에서 고분자 강산 촉매를 이용하여 포름알데히드와 일산화탄소를 반응시켜 글리콜산을 제조하며, 또한, 전술한 반응계내에서 포름알데히드와 일산화탄소를 반응시킨 다음 알코올과 함께 에스테르화 반응을 행하여 글리콜산 에스테르를 제조한다. 따라서, 본 발명에서는 포름알데히드 제조시 정제가 어려운 물 및 임의의 미반응 메탄올을 함유하는 비정제 포름알데히드를 초기 반응물로써 사용할 수 있으며, 용매로서 반응에 직접 참여하지 않는 불활성 용매를 사용함으로서 활성 용매 사용시 수반되는 부산물 생성등의 문제점을 배제할 수 있다.The present invention relates to a method for producing glycolic acid by a carbonylation reaction of formaldehyde and a method for producing glycolic acid esters thereof. In the method of the present invention, glycolic acid is prepared by reacting formaldehyde with carbon monoxide in a water-soluble inert solvent using a polymer strong acid catalyst, and also reacting formaldehyde with carbon monoxide in the reaction system described above, followed by esterification with alcohol. To prepare a glycolic acid ester. Therefore, in the present invention, crude formaldehyde containing water and any unreacted methanol, which are difficult to purify in the preparation of formaldehyde, may be used as an initial reactant, and an active solvent may be used by using an inert solvent that does not directly participate in the reaction as a solvent. Problems such as the generation of accompanying by-products can be excluded.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920024977A KR940014290A (en) | 1992-12-22 | 1992-12-22 | Method for preparing glycolic acid and glycolic acid esters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920024977A KR940014290A (en) | 1992-12-22 | 1992-12-22 | Method for preparing glycolic acid and glycolic acid esters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR940014290A true KR940014290A (en) | 1994-07-18 |
Family
ID=67214990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019920024977A KR940014290A (en) | 1992-12-22 | 1992-12-22 | Method for preparing glycolic acid and glycolic acid esters |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940014290A (en) |
-
1992
- 1992-12-22 KR KR1019920024977A patent/KR940014290A/en not_active IP Right Cessation
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69711918D1 (en) | PRODUCTION OF ORGANIC CARBONIC ACID ESTERS | |
| KR890014432A (en) | Method for producing carboxylic acid | |
| KR860001047A (en) | α- (p-isobutylphenyl) propionic acid or alkyl ester thereof | |
| JPS57123143A (en) | Production of glycolic ester | |
| IE41093L (en) | Production of carbonic acid esters. | |
| Fujimoto et al. | Vapor phase carbonylation of organic compounds over supported transition metal catalysts. 2. Synthesis of acetic acid and methyl acetate from methanol with nickel-active carbon catalyst | |
| US3551465A (en) | Preparation of organic esters from alpha-nitro-ketones | |
| KR940014290A (en) | Method for preparing glycolic acid and glycolic acid esters | |
| CA2053828A1 (en) | Continuous process for the simultaneous preparation of acetic acid and acetic anhydride | |
| KR900012678A (en) | Preparation of catalyst precursors and corresponding catalysts | |
| KR910009624A (en) | Carbonylation of Allyl Butenol and Butenol Esters | |
| BR8502267A (en) | ALDEIDES PREPARATION PROCESS | |
| US3487118A (en) | Preparation of dihydromyrcenol | |
| US4191839A (en) | Direct oxidation of toluene to benzylidene diacetate | |
| US4283582A (en) | Pre-pressuring methanol-cobalt with carbon monoxide in homologation of methanol | |
| SU888814A3 (en) | Method of preparing dimethylterephthalate | |
| US4057577A (en) | Process for preparing di(alkoxy-carboxy) hydrocarbylenes | |
| AU8461391A (en) | Process for the simultaneous preparation of acetic acid and acetic anhydride | |
| US4692549A (en) | Carboalkoxylation of butadiene to form dialkyl adipate | |
| US4156783A (en) | Conversion of benzylidene diacetate to phenyl acetate and methylene diacetate | |
| JPH01117859A (en) | Production of aromatic percarboxylic acid | |
| SU791726A1 (en) | Method of preparing glycerine dichlorohydrin | |
| KR950017910A (en) | 2,6-naphthalene dicarboxylic acid production method | |
| SU555089A1 (en) | Method for preparing bis- (α-hydroxyethyl) terephthalate | |
| SU592813A1 (en) | Method of preparing c8-c9 aliphatic carboxylic acids |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| G160 | Decision to publish patent application | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20031002 Year of fee payment: 9 |
|
| LAPS | Lapse due to unpaid annual fee |