KR950017904A - 수율이 높은 메타크릴산 에스테르 제조방법 - Google Patents

수율이 높은 메타크릴산 에스테르 제조방법 Download PDF

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KR950017904A
KR950017904A KR1019940032179A KR19940032179A KR950017904A KR 950017904 A KR950017904 A KR 950017904A KR 1019940032179 A KR1019940032179 A KR 1019940032179A KR 19940032179 A KR19940032179 A KR 19940032179A KR 950017904 A KR950017904 A KR 950017904A
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alkyl
mixture
esterification
methacrylic acid
isobutyrate
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KR1019940032179A
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KR100411499B1 (ko
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캐롤 돕슨 존
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윌리엄 이. 램버트 3세
롬 앤드 하스 캄파니
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00Preparation of carboxylic acid esters
    • C07C67/18Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group
    • C07C67/20Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from amides or lactams
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00Preparation of carboxylic acid esters
    • C07C67/30Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
    • C07C67/317Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups
    • C07C67/327Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups by elimination of functional groups containing oxygen only in singly bound form

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

본 발명은 반응부산물을 감소시키고 중간물질을 공정에 재순환시킴으로써, 아세톤시안히드린과 황산으로 부터 높은 수율로 α, β-불포화 카르복시산에스테르를 제조하는 방법을 제공한다.

Description

수율이 높은 메타크릴산 에스테르 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (9)

  1. a. ACH로 부터 유도된 2-메타크릴아미드(MAM), α-술페이토이소부티르아미드(SIBAM), α-히드록시이소브티르아미드(HIBAM) 및 메타크릴산(MAA)의 전체 몰수의 합이 최대가 되도록 아세톤 시안히드린을 가수분해하여 2-메타크릴아미드, α-술페이토이소부티르아미드, α-히도록시이소부티르아미드 및 메타크릴산을 포함하는 가수분해 혼합물을 제조하는 단계. b. 상기 가수분해 흔합물을 C1-C12 알킬알코올로 에스테르화하여 C1-Cl2알킬 메타 크릴레이트, C1-C2 알킬 α-히드록시이소부티르레이트, C1-Cl2 알킬-C1-Cl2알콕시 이소부티르레이트 및 C1-Cl2알킬 α-C1-Cl2알콕시이소부티르레이트를 포함하는 에스테르화 혼합물을 제조하는 단계:c. 상기 에스테르화 혼합물을 수성 부분,C1-Cl2 메타크릴레이트를 포함하는 제1유기부분 C1-Cl2알킬 α-히드록시이소부티르레이트, C1-C12 알킬-C1-Cl2 알록시 이소부티르레이트 및 C1-Cl2알킬 β-C1-Cl2알콕시 이소부티르레이트를 포함하는 제2유기부분으로 분리하는 단계:d. 상기 제2유기 부분의 이소부티르레이트-함유 성분을 탈수하여 C1-Cl2알킬 메타 크릴레이트, 메타크릴산, C1-Cl2 알킬 알코올 및 물을 포함하는 재순환 혼합물을 제조하는 단계;e. 상기 재순환 혼합물을 상기 가수분해 흔합물 또는 상기 에스테르화 혼합물과 결합하는 단계;를 포함하는 메닥크릴산 에스테르 제조방법.
  2. 1항에 있어서, 에스테르화 단계 직전의 공전 스트림내의 α-히드록시이소부티르아미드의 농도는 상기 아세톤 시안히드린 출발물질을 기준으로 약 2-20몰%임을 특징으로 하는 방법.
  3. 1항에 있어서, 에스테르화 단계 직전의 공정 스트림내의 α-히드록시이소부티르아미드의 농도는 상기 아세톤 시안히드린 출발물질을 기준으로 약 5-15몰%임을 특징으로 하는 방법.
  4. 1항에 있어서, 에스테르화 단계 직전의 공정 스트림내의 α-술페이토이소부티르아미드의 농도는 상기 아세톤 시안히드린 출발물질을 기준으로 약 1-20몰%임을 특징으로 하는 방법.
  5. 1항에 있어서, 상기 C1-Cl2알킬알코올은 메탄올, 에탄올, n-프로판올, 이소프로판올, n-부탄올 및 이소프로판올로 구성되는 그룹으로 부터 선택됨을 특징으로 하는 방법.
  6. 1항에 있어서, 상기 C1-Cl2알킬 알코올은 메탄올임을 특징으로 하는 방법,
  7. 1항에 있어서, 상기 분리단계는 에스테르화 혼할물의 분별증류를 포함함을 특징으로 하는 방법.
  8. 1항에 있어서, 상기 탈수단계는 결정성 알루미노 실리케이트의 존재하에서 기상(vapor phase)에서 행하여짐을 특징으로 하는 방법.
  9. 8항에 있어서, 상기 결정성 알루미노실리케이트는 알칼리 금속 및 배금족 원소로 변형됨을 특징으로 하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940032179A 1993-12-02 1994-11-30 수율이높은메타크릴산에스테르제조방법 KR100411499B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/160697 1993-12-02
US08/160,697 US5393918A (en) 1993-12-02 1993-12-02 High yield process for the production of methacrylic acid esters

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KR950017904A true KR950017904A (ko) 1995-07-20
KR100411499B1 KR100411499B1 (ko) 2004-03-20

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US (1) US5393918A (ko)
EP (1) EP0656343B1 (ko)
JP (1) JP3860234B2 (ko)
KR (1) KR100411499B1 (ko)
CN (1) CN1041410C (ko)
BR (1) BR9404473A (ko)
CA (1) CA2135438A1 (ko)
CZ (1) CZ303494A3 (ko)
DE (1) DE69403883T2 (ko)
ES (1) ES2104288T3 (ko)
RU (1) RU2131867C1 (ko)
SG (1) SG81884A1 (ko)
TW (1) TW319774B (ko)

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JP5432852B2 (ja) 2009-09-30 2014-03-05 ローム アンド ハース カンパニー メタクリル酸メチルの精製によって生じる流れから価値のある化合物を回収する方法
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JP2023547392A (ja) 2020-10-23 2023-11-10 レーム・ゲーエムベーハー 不要な副産物の低減によるメタクリル酸(mas)および/またはアルキルメタクリレートの最適化された製造方法
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CN1109865A (zh) 1995-10-11
RU94042228A (ru) 1996-10-10
EP0656343B1 (en) 1997-06-18
SG81884A1 (en) 2001-07-24
TW319774B (ko) 1997-11-11
CN1041410C (zh) 1998-12-30
KR100411499B1 (ko) 2004-03-20
BR9404473A (pt) 1995-07-25
EP0656343A1 (en) 1995-06-07
JPH07196576A (ja) 1995-08-01
RU2131867C1 (ru) 1999-06-20
DE69403883T2 (de) 1998-02-12
ES2104288T3 (es) 1997-10-01
CA2135438A1 (en) 1995-06-03
JP3860234B2 (ja) 2006-12-20
CZ303494A3 (en) 1995-11-15
US5393918A (en) 1995-02-28
DE69403883D1 (de) 1997-07-24

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