DE69214607D1 - Verarbeitung von natürlicher Kresylsäure - Google Patents

Verarbeitung von natürlicher Kresylsäure

Info

Publication number
DE69214607D1
DE69214607D1 DE69214607T DE69214607T DE69214607D1 DE 69214607 D1 DE69214607 D1 DE 69214607D1 DE 69214607 T DE69214607 T DE 69214607T DE 69214607 T DE69214607 T DE 69214607T DE 69214607 D1 DE69214607 D1 DE 69214607D1
Authority
DE
Germany
Prior art keywords
processing
cresylic acid
natural cresylic
natural
acid
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69214607T
Other languages
English (en)
Other versions
DE69214607T2 (de
Inventor
David H Duncan
Gene G Baker
Dana J Maas
Kevin M Mohl
Robert G Todd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dakota Gasification Co
Original Assignee
Dakota Gasification Co
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 by Dakota Gasification Co filed Critical Dakota Gasification Co
Publication of DE69214607D1 publication Critical patent/DE69214607D1/de
Application granted granted Critical
Publication of DE69214607T2 publication Critical patent/DE69214607T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/74—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/74—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • C07C37/80—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation by extractive 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
    • Y10S203/09—Plural feed

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
DE69214607T 1991-12-04 1992-12-02 Verarbeitung von natürlicher Kresylsäure Expired - Lifetime DE69214607T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80222191A 1991-12-04 1991-12-04

Publications (2)

Publication Number Publication Date
DE69214607D1 true DE69214607D1 (de) 1996-11-21
DE69214607T2 DE69214607T2 (de) 1997-03-20

Family

ID=25183137

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69214607T Expired - Lifetime DE69214607T2 (de) 1991-12-04 1992-12-02 Verarbeitung von natürlicher Kresylsäure

Country Status (5)

Country Link
US (1) US5354429A (de)
EP (1) EP0545814B1 (de)
CZ (1) CZ281938B6 (de)
DE (1) DE69214607T2 (de)
PL (1) PL172805B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5750009A (en) * 1994-08-31 1998-05-12 Dakota Gasification Company Method for purifying natural cresylic acid mixtures
US5679223A (en) * 1995-06-15 1997-10-21 Dakota Gasification Company Method for separating and purifying catechol mixtures
US5964987A (en) * 1997-09-15 1999-10-12 Dakota Gasification Company Neutral oil removal from natural cresylic acid mixtures
US6620452B1 (en) 2000-05-05 2003-09-16 American Fruit And Flavors Food additives having enlarged concentration of phenolics extracted from fruits and vegetables and process of obtaining the same
US6509054B1 (en) * 2000-05-05 2003-01-21 American Fruits And Flavors Food additives having enlarged concentration of phenolics extracted from fruits, and process of obtaining the same
DE10110313B4 (de) * 2001-03-03 2005-02-03 Uhde Gmbh Verfahren zur Reinigung einer durch Neutralöle und/oder Teerbasen verunreinigten Kresylsäuremischung

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE204474C (de) *
GB678191A (en) * 1949-09-23 1952-08-27 Metallgesellschaft Ag Process for the separation of mixtures containing hydrocarbons and alcohols by distillation
US2666796A (en) * 1950-09-12 1954-01-19 Consolidation Coal Co Refining of tar acid oil
US2618666A (en) * 1951-01-17 1952-11-18 Texas Co Process for isolating phenolic compounds
GB708925A (en) * 1951-03-30 1954-05-12 Vulcan Chemical Company Ltd Separation of phenols by fractional distillation
GB730473A (en) * 1952-06-20 1955-05-25 Midland Tar Distillers Ltd Improvements relating to the extraction of phenols from coal-tar hydrocarbons
US2767220A (en) * 1953-08-07 1956-10-16 Consolidation Coal Co Separation of thiophenols and tar acids
US2789145A (en) * 1954-08-10 1957-04-16 Consolidation Coal Co Method of removing thiophenols from phenols
IT582279A (de) * 1957-04-02 1900-01-01 Progil Electrochimie
US2969401A (en) * 1958-05-14 1961-01-24 Union Carbide Corp Separation of alkylated phenols by solvent extraction
US3075890A (en) * 1958-11-24 1963-01-29 Stone & Webster Eng Corp Purification of naphthalene by distillation
US3331755A (en) * 1964-12-18 1967-07-18 Consolidation Coal Co Extractive distillation of 2, 6-xylenol with glycol
US3830708A (en) * 1972-07-18 1974-08-20 Union Carbide Corp Process for the purification of phenol by azeotropic distillation with ethylene glycol
US3827947A (en) * 1973-02-28 1974-08-06 Atlantic Richfield Co Purification of 3,5-xylenol by extractive distillation
DD204474A1 (de) * 1982-03-09 1983-11-30 Leuna Werke Veb Entfernung von guajacol aus kresolgemischen
US4443636A (en) * 1982-07-14 1984-04-17 Koppers Company, Inc. Refining lurgi tar acids
US4429170A (en) * 1982-07-14 1984-01-31 Koppers Company, Inc. Process for removing tar bases from Lurgi tar acid stream
DE3302812A1 (de) * 1983-01-28 1984-08-02 Bayer Ag, 5090 Leverkusen Verfahren zur gewinnung von phenolen aus kohlenwasserstoffen
US4487987A (en) * 1983-06-09 1984-12-11 Texaco Inc. Method of decolorizing mixtures of aminoethylpiperazine, a polyoxypropylenediamine and alkylphenols with N,N-diethylhydroxylamine
US4503267A (en) * 1983-10-24 1985-03-05 Union Camp Corporation Extraction of phenolics from hydrocarbons

Also Published As

Publication number Publication date
CZ281938B6 (cs) 1997-04-16
DE69214607T2 (de) 1997-03-20
PL296809A1 (en) 1993-07-26
EP0545814A1 (de) 1993-06-09
US5354429A (en) 1994-10-11
CZ357692A3 (en) 1993-06-16
EP0545814B1 (de) 1996-10-16
PL172805B1 (pl) 1997-11-28

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition