KR940014290A - Method for preparing glycolic acid and glycolic acid esters - Google Patents

Method for preparing glycolic acid and glycolic acid esters Download PDF

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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
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KR
South Korea
Prior art keywords
water
formaldehyde
glycolic acid
methanol
inert solvent
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Application number
KR1019920024977A
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Korean (ko)
Inventor
이상영
김재창
이재성
이재민
김영걸
Original Assignee
박득표
포항종합제철 주식회사
백덕현
재단법인산업과학기술연구소
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Application filed by 박득표, 포항종합제철 주식회사, 백덕현, 재단법인산업과학기술연구소 filed Critical 박득표
Priority to KR1019920024977A priority Critical patent/KR940014290A/en
Publication of KR940014290A publication Critical patent/KR940014290A/en

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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

글리콜산 및 글리콜산 에스테르의 제조방법Method for preparing glycolic acid and glycolic acid esters

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (6)

포름알데히드의 카르보닐화에 의하여 글리콜산을 제조함에 있어서, 수용성 불활성 용매중에서 고분자 강산촉매를 이용하여 물 또는 물/메탄올 혼합물의 존재하에 포름알데히드와 이산화탄소를 반응시켜 글리콜산을 제조하는 방법.A method for preparing glycolic acid in the production of glycolic acid by carbonylation of formaldehyde by reacting formaldehyde and carbon dioxide in the presence of water or a water / methanol mixture using a polymer strong acid catalyst in an aqueous inert solvent. 수용성 불활성 용매중에서 고분자 강산촉매를 이용하여 물 또는 물/메탄올 혼합물의 존재하에 포름알데히드와 이산화탄소를 반응시킨 다음, 알코올과 함께 에스테르화 반응을 행하여 글리콜산 에스테르를 제조하는 방법.A method of preparing glycolic acid esters by reacting formaldehyde with carbon dioxide in the presence of water or a water / methanol mixture in a water-soluble inert solvent in the presence of water or a water / methanol mixture, followed by esterification with alcohol. 제 1 항 또는 제 2 항에 있어서, 반응물인 포름알데히드로서, 포름알데히드 제조시 정제가 어려운 물 또는 물 및 미반응 메탄올을 포함하는, 비정제 포름알데히드를 사용함을 특징으로 하는 방법.3. Process according to claim 1 or 2, characterized in that as a reactant formaldehyde, crude formaldehyde is used, comprising water or water and unreacted methanol, which is difficult to purify in the preparation of formaldehyde. 제 1 항 또는 2항에 있어서, 수용성 불활성 용매가 디옥산인 것을 특징으로 하는 방법.The method according to claim 1 or 2, wherein the water-soluble inert solvent is dioxane. 제 1 항 또는 2항에 있어서, 글리콜산 제조반응중 일산화탄소의 분압은 상압내지 5000psig이고, 반응온도는 80-200℃인 것을 특징으로 하는 방법.The method according to claim 1 or 2, wherein the partial pressure of carbon monoxide during the glycolic acid production reaction is between atmospheric pressure and 5000 psig and the reaction temperature is 80 to 200 deg. 제 1 항 또는 2항에 있어서, 초기 반응물중 포름알데히드 : 물의 몰비는 1 : 4이하이고, 메탄올 존재시 포름알데히드 : 메탄올의 몰비는 1 : 1이하인 것을 특징으로 하는 방법.The method according to claim 1 or 2, wherein the molar ratio of formaldehyde to water in the initial reactant is less than or equal to 1: 4 and the molar ratio of formaldehyde to methanol in the presence of methanol is less than or equal to 1: 1. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920024977A 1992-12-22 1992-12-22 Method for preparing glycolic acid and glycolic acid esters KR940014290A (en)

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

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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

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KR940014290A true KR940014290A (en) 1994-07-18

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