KR920021477A - Separation and Purification Method of Methacrylic Acid - Google Patents

Separation and Purification Method of Methacrylic Acid Download PDF

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Publication number
KR920021477A
KR920021477A KR1019910007016A KR910007016A KR920021477A KR 920021477 A KR920021477 A KR 920021477A KR 1019910007016 A KR1019910007016 A KR 1019910007016A KR 910007016 A KR910007016 A KR 910007016A KR 920021477 A KR920021477 A KR 920021477A
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KR
South Korea
Prior art keywords
ketone
carbon atoms
methyl
ester
phthalate
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KR1019910007016A
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Korean (ko)
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KR930007733B1 (en
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백행남
이정호
한요한
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채영복
제단법인 한국화학연구소
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Priority to KR1019910007016A priority Critical patent/KR930007733B1/en
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Publication of KR930007733B1 publication Critical patent/KR930007733B1/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00Purification; Separation; Use of additives
    • C07C7/10Purification; Separation; Use of additives by extraction, i.e. purification or separation of liquid hydrocarbons with the aid of liquids
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C57/00Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
    • C07C57/02Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
    • C07C57/03Monocarboxylic acids
    • C07C57/04Acrylic acid; Methacrylic acid

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

내용 없음No content

Description

메타크릴산의 분리 정제방법Separation and Purification Method of Methacrylic Acid

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (5)

이소부틸렌, t-부틸알콜 및 메타크롤레인의 기상접촉 산화반응에 의해 생성된 메타크릴산 수용액에서 메타크릴산을 회수함에 있어서, 탄소수 6∼14의 지방족, 지환족 및 방향족 탄화수소와 탄소수 4∼7의 케톤, 에스테르 중 적어도 한가지 이상의 용매에 인산에스테르, 프탈산에스테르 중 적어도 한가지 이상의 용매를 혼합한 용매를 가하여 메타크릴산을 선택적으로 추출하는 것을 특징으로 하는 메타크릴산의 분리, 정제방법.In recovering methacrylic acid from the aqueous methacrylic acid solution produced by the gas phase catalytic oxidation of isobutylene, t-butyl alcohol and methacrolein, aliphatic, alicyclic and aromatic hydrocarbons having 6 to 14 carbon atoms and 4 to 4 carbon atoms. A method of separating and purifying methacrylic acid, wherein methacrylic acid is selectively extracted by adding a solvent obtained by mixing at least one solvent of phosphate ester and phthalate ester to at least one solvent of ketones and esters of 7. 제1항에 있어서, 탄소수 6∼14의 지방족 탄화수소는 헥산, 헵탄, 옥탄, 노난, 데칸, 운데칸 및 도데칸이며, 탄소수 6-14의 치환족 탄화수소는 시클로헥산, 메틸시클로헥산, 시클로헵탄, 에틸시클로헥산, 이소프로필 시클로헥산 및 데카린이고 탄소수 6-14의 방향족 탄화수소는 벤젠, 톨루엔, 크실렌, 에틸벤젠 및 테트라린임을 것을 특징으로 하는 메타크릴산의 분리, 정제방법.The method of claim 1, wherein the aliphatic hydrocarbon having 6 to 14 carbon atoms is hexane, heptane, octane, nonane, decane, undecane and dodecane, and the substituted aliphatic hydrocarbon having 6 to 14 carbon atoms is cyclohexane, methylcyclohexane, cycloheptane, Ethylcyclohexane, isopropyl cyclohexane and decalin and aromatic hydrocarbons having 6 to 14 carbon atoms are benzene, toluene, xylene, ethylbenzene and tetralin. 제1항에 있어서, 탄소수 4-7의 케톤은 메틸에틸케톤, 메틸 n-프로필케톤, 메틸이소프로필케톤, 메틸 n-부틸케톤, 메틸이소부틸케톤, 디에틸케톤 및 메틸이소펜틸케톤이며 탄소수 4∼7의 에스테르는 초산이소프로필, 초산 n-프로필, 초산이소부틸, 초산 n-부틸, 초산이소펜틸, 메타크릴산메틸 및 아크릴산메틸임을 특징으로 하는 메타크릴산의 분리, 정제방법.The ketone of claim 1, wherein the ketone having 4 to 7 carbon atoms is methyl ethyl ketone, methyl n-propyl ketone, methyl isopropyl ketone, methyl n-butyl ketone, methyl isobutyl ketone, diethyl ketone and methyl isopentyl ketone, and has 4 carbon atoms. The ester of ˜7 is isopropyl acetate, n-propyl acetate, isobutyl acetate, n-butyl acetate, isopentyl acetate, methyl methacrylate and methyl acrylate. 제1항에 있어서, 인산에스테르는 인산트리 n-부틸, 인산트리이소부틸, 인산트리프로필 및 인산트리에틸이며 프탈산에스테르는 프탈산 디메틸, 프탈산디에틸, 프탈산디프로필, 프탈산디이소프로필, 이소프탈산디메틸, 이소프탈산디에틸, 이소프탈산디프로필, 이소프탈산디이소프로필 및 테레프탈산디메틸임을 것을 특징으로 하는 메타크릴산의 분리, 정제방법.The phosphate ester is tri-n-butyl phosphate, triisobutyl phosphate, tripropyl phosphate and triethyl phosphate, and the phthalate ester is dimethyl phthalate, diethyl phthalate, dipropyl phthalate, diisopropyl phthalate or dimethyl isophthalate. And diethyl isophthalate, dipropyl isophthalate, diisopropyl isophthalate and dimethyl terephthalate. 제1항에 있어서, 인산에스테르 및 프탈산에스테르의 혼합비는 지방족 및 방향족 탄화수소계 용매나 케톤 및 에스테르계 용매의 3.0∼30중량%임을 것을 특징으로 하는 메카크릴산의 분리, 정제방법.The method of claim 1, wherein the mixing ratio of the phosphate ester and the phthalate ester is 3.0 to 30% by weight of the aliphatic and aromatic hydrocarbon solvents or the ketone and ester solvents. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910007016A 1991-05-01 1991-05-01 Method of separated and defined for methacrylic acid KR930007733B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910007016A KR930007733B1 (en) 1991-05-01 1991-05-01 Method of separated and defined for methacrylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910007016A KR930007733B1 (en) 1991-05-01 1991-05-01 Method of separated and defined for methacrylic acid

Publications (2)

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KR920021477A true KR920021477A (en) 1992-12-18
KR930007733B1 KR930007733B1 (en) 1993-08-18

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007074827A1 (en) * 2005-12-26 2007-07-05 Mitsubishi Rayon Co., Ltd. Method for extracting methacrylic acid

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