FR2436174A1 - Two=stage distillative purificn. of beech tar creosote - by mixing the first distillate obtd. by conventional distn. with sodium boranate and then distilling the organic phase - Google Patents

Two=stage distillative purificn. of beech tar creosote - by mixing the first distillate obtd. by conventional distn. with sodium boranate and then distilling the organic phase

Info

Publication number
FR2436174A1
FR2436174A1 FR7921520A FR7921520A FR2436174A1 FR 2436174 A1 FR2436174 A1 FR 2436174A1 FR 7921520 A FR7921520 A FR 7921520A FR 7921520 A FR7921520 A FR 7921520A FR 2436174 A1 FR2436174 A1 FR 2436174A1
Authority
FR
France
Prior art keywords
creosote
distillate
organic phase
distn
purificn
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.)
Granted
Application number
FR7921520A
Other languages
French (fr)
Other versions
FR2436174B1 (en
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of FR2436174A1 publication Critical patent/FR2436174A1/en
Application granted granted Critical
Publication of FR2436174B1 publication Critical patent/FR2436174B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C1/00—Working-up tar
    • C10C1/04—Working-up tar by distillation
    • C10C1/08—Winning of aromatic fractions

Landscapes

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

Abstract

Process comprises subjecting the crude creosote to a conventional single disnt. and then adding dropwise to the first distillate an aq. soln. of N boranate (NaNH4), while stirring. After a reaction time of 1-60 min., the aq. phase is sepd. and the organic phase distd. in vacuo. The most important components of creosote are cresol guaiacol, p-cresol and other phenols and phenol ethers. Creosote has antiseptic properties and is used in the prepn. of pharmaceuticals, e.g. cough mixt. Process allows the purification of beech tar crude creosote to pure creosote in only two distillation steps. as opposed to the 4 or 5 steps necessary in previous processes.
FR7921520A 1978-09-12 1979-08-28 Two=stage distillative purificn. of beech tar creosote - by mixing the first distillate obtd. by conventional distn. with sodium boranate and then distilling the organic phase Granted FR2436174A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782839565 DE2839565C2 (en) 1978-09-12 1978-09-12 Process for the extraction of pure beech wood tar creosote

Publications (2)

Publication Number Publication Date
FR2436174A1 true FR2436174A1 (en) 1980-04-11
FR2436174B1 FR2436174B1 (en) 1984-02-24

Family

ID=6049211

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7921520A Granted FR2436174A1 (en) 1978-09-12 1979-08-28 Two=stage distillative purificn. of beech tar creosote - by mixing the first distillate obtd. by conventional distn. with sodium boranate and then distilling the organic phase

Country Status (3)

Country Link
DE (1) DE2839565C2 (en)
FR (1) FR2436174A1 (en)
SE (1) SE7907543L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1056363C (en) * 1995-10-04 2000-09-13 朱昌朋 Extraction of 4-methyl guaiacol and 4-ethyl guaiacol from creasote

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR602866A (en) * 1925-05-20 1926-04-02 Process for the refining of beech tar oils and for the manufacture of high-value pure preparations
US2573990A (en) * 1948-03-08 1951-11-06 Crossett Lumber Company Recovery of medicinal creosote
US3150191A (en) * 1960-02-29 1964-09-22 California Research Corp Phenol color reduction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR602866A (en) * 1925-05-20 1926-04-02 Process for the refining of beech tar oils and for the manufacture of high-value pure preparations
US2573990A (en) * 1948-03-08 1951-11-06 Crossett Lumber Company Recovery of medicinal creosote
US3150191A (en) * 1960-02-29 1964-09-22 California Research Corp Phenol color reduction

Also Published As

Publication number Publication date
FR2436174B1 (en) 1984-02-24
DE2839565A1 (en) 1980-03-27
DE2839565C2 (en) 1982-07-29
SE7907543L (en) 1980-03-13

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