NL7205590A - - Google Patents

Info

Publication number
NL7205590A
NL7205590A NL7205590A NL7205590A NL7205590A NL 7205590 A NL7205590 A NL 7205590A NL 7205590 A NL7205590 A NL 7205590A NL 7205590 A NL7205590 A NL 7205590A NL 7205590 A NL7205590 A NL 7205590A
Authority
NL
Netherlands
Application number
NL7205590A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of NL7205590A publication Critical patent/NL7205590A/xx

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
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
    • C07C51/252—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring of propene, butenes, acrolein or methacrolein
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S203/00—Distillation: processes, separatory
    • Y10S203/22—Accessories
NL7205590A 1971-04-29 1972-04-25 NL7205590A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2121123A DE2121123C3 (de) 1971-04-29 1971-04-29 Verfahren zum Abtrennen von Wasser aus wäßrigen Lösungen von Acrylsäure durch azeotrope Destillation

Publications (1)

Publication Number Publication Date
NL7205590A true NL7205590A (de) 1972-10-31

Family

ID=5806374

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7205590A NL7205590A (de) 1971-04-29 1972-04-25

Country Status (7)

Country Link
US (1) US3844903A (de)
BE (1) BE782800A (de)
DE (1) DE2121123C3 (de)
FR (1) FR2134663B1 (de)
GB (1) GB1378716A (de)
IT (1) IT952815B (de)
NL (1) NL7205590A (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040913A (en) * 1975-09-02 1977-08-09 Rohm And Haas Company Recovery of methacrylic acid from the effluent obtained from the condensation of formaldehyde and propionic acid
BE875237R (fr) * 1978-07-18 1979-07-16 Cosden Technology Procede pour inhiber la polymerisation de composes vinylaromatiques facilement polymerisables
GB2146636B (en) * 1983-08-11 1987-02-04 Nippon Catalytic Chem Ind Process for producing acrylic acid
US4599144A (en) * 1984-06-25 1986-07-08 Standard Oil Company (Indiana) Process for recovery of methacrylic acid
US5728872A (en) * 1994-06-27 1998-03-17 Lutz Riemenschneider Stabilized acrylic acid compositions
JP3937462B2 (ja) * 1994-08-04 2007-06-27 三菱化学株式会社 アクリル酸精製法
CA2194688C (en) * 1994-08-23 2008-09-30 William David Parten Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid
TW524796B (en) * 1997-11-17 2003-03-21 Sumitomo Chemical Co Method for producing acrylic acid
DE19814449A1 (de) 1998-03-31 1999-10-07 Basf Ag Verfahren zur Herstellung von (Meth)acrylsäure und (Meth)acrylsäureestern
DE19814387A1 (de) 1998-03-31 1999-10-07 Basf Ag Verfahren zur Herstellung von Acrylsäure und Acrylsäureestern
DE19814375A1 (de) 1998-03-31 1999-10-07 Basf Ag Verfahren zur Herstellung von Acrylsäure und Acrylsäureestern
US6150553A (en) * 1998-08-11 2000-11-21 E. I. Du Pont De Nemours And Company Method for recovering methyl acetate and residual acetic acid in the production acid of pure terephthalic acid
DE10036958A1 (de) * 2000-07-28 2002-02-07 Basf Ag Verfahren zur Herstellung von tert.-C4-C8-Alkylestern der (Meth)acrylsäure
US7128813B2 (en) * 2002-05-01 2006-10-31 Rohm And Haas Company Process for manufacturing high purity methacrylic acid
US9149736B2 (en) * 2012-12-13 2015-10-06 Invista North America S.A.R.L. Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid
CN113788751B (zh) * 2021-08-12 2023-10-13 万华化学(四川)有限公司 一种乙酸芳樟酯生产中副产物乙酸的纯化方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936267A (en) * 1955-11-18 1960-05-10 Farbwerke Hocchst Ag Vormals M Process for purifying carboxylic acids
US3470238A (en) * 1964-11-06 1969-09-30 Mitsubishi Petrochemical Co Process for recovering acrylic and methacrylic ester
DE1518721A1 (de) * 1965-09-09 1969-06-12 Dynamit Nobel Ag Verfahren zur Gewinnung wasserloeslicher ungesaettigter Karbonsaeuren aus waessrigen Loesungen
US3555082A (en) * 1966-12-15 1971-01-12 Knapsack Ag Process for isolating acrylic acid from the reaction gases obtained by oxidation of propylene or acrolein
DE1805758C3 (de) * 1968-10-29 1974-07-18 Knapsack Ag, 5033 Huerth-Knapsack Verfahren zur Abtrennung von Acrylsäure aus wäßriger Rohacrylsäure
US3527677A (en) * 1969-03-06 1970-09-08 Goodrich Co B F Process for dehydration of aqueous acrylic acid solutions by extractive - azeotropic distillation with 2-ethylhexanol or 2-ethylhexylacrylate

Also Published As

Publication number Publication date
US3844903A (en) 1974-10-29
BE782800A (fr) 1972-10-30
DE2121123B2 (de) 1979-10-04
DE2121123A1 (de) 1972-11-16
FR2134663A1 (de) 1972-12-08
DE2121123C3 (de) 1980-06-12
FR2134663B1 (de) 1976-06-11
GB1378716A (en) 1974-12-27
IT952815B (it) 1973-07-30

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Legal Events

Date Code Title Description
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed