CH490368A - Vitamin C production process - Google Patents

Vitamin C production process

Info

Publication number
CH490368A
CH490368A CH97469A CH97469A CH490368A CH 490368 A CH490368 A CH 490368A CH 97469 A CH97469 A CH 97469A CH 97469 A CH97469 A CH 97469A CH 490368 A CH490368 A CH 490368A
Authority
CH
Switzerland
Prior art keywords
vitamin
production process
production
Prior art date
Application number
CH97469A
Other languages
French (fr)
Inventor
Bogoczek Romuald
Original Assignee
Politechnika Slaska Im Wincent
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
Priority claimed from PL12501368A external-priority patent/PL69743B1/xx
Priority claimed from PL12501568A external-priority patent/PL69744B1/xx
Priority claimed from PL13020568A external-priority patent/PL69740B1/xx
Application filed by Politechnika Slaska Im Wincent filed Critical Politechnika Slaska Im Wincent
Publication of CH490368A publication Critical patent/CH490368A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D307/62—Three oxygen atoms, e.g. ascorbic acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Furan Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
CH97469A 1968-02-01 1969-01-22 Vitamin C production process CH490368A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PL12501368A PL69743B1 (en) 1968-02-01 1968-02-01
PL12501568A PL69744B1 (en) 1968-02-01 1968-02-01
PL13020568A PL69740B1 (en) 1968-11-23 1968-11-23

Publications (1)

Publication Number Publication Date
CH490368A true CH490368A (en) 1970-05-15

Family

ID=27354018

Family Applications (1)

Application Number Title Priority Date Filing Date
CH97469A CH490368A (en) 1968-02-01 1969-01-22 Vitamin C production process

Country Status (10)

Country Link
JP (1) JPS4830273B1 (en)
AT (1) AT308290B (en)
CH (1) CH490368A (en)
CS (1) CS169787B2 (en)
DE (1) DE1904619C3 (en)
DK (1) DK131467C (en)
ES (1) ES363151A1 (en)
FR (1) FR2001090A1 (en)
GB (1) GB1222322A (en)
SE (1) SE363322B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58177986A (en) * 1982-04-09 1983-10-18 Shionogi & Co Ltd Production of l-ascorbic acid
ES2061395B1 (en) * 1993-02-09 1995-12-16 Velasco Clemente Jesus Sanchez ADDITIONAL INJECTION CARBURETTOR AIR VARIABLE AND FUEL, CONTROLLED THROUGH DIFFERENTIAL PISTON FIXED TO SLIDING WITH DIRECT LINEAR MOVEMENT.
DE19938980A1 (en) 1999-08-19 2001-02-22 Basf Ag Process for the preparation of 2-keto-L-gulonic acid esters
DE19954511A1 (en) * 1999-11-12 2001-05-17 Basf Ag Process for the preparation of alkali salts of L-ascorbic acid
DE10022518A1 (en) 2000-05-10 2001-11-15 Basf Ag Preparation of L-ascorbic acids by reacting 2-keto-L-gulonic acids or melt of 2-keto-L-gulonic acid alkyl esters under acid catalysis using water-miscible solvent(s)
US6610863B2 (en) * 2000-12-22 2003-08-26 Eastman Chemical Company Continuous process for producing L-ascorbic acid
WO2002051827A1 (en) 2000-12-22 2002-07-04 Eastman Chemical Company Process for producing ascorbic acid in the presence of a sulfit
US6740762B2 (en) 2001-08-24 2004-05-25 Eastman Chemical Company Process for ascorbic acids using alkaline earth silicate catalysts
US6716997B1 (en) 2001-10-09 2004-04-06 Eastman Chemical Company Systems and methods for generation of ascorbic acid with reduced color
DE10231890B4 (en) 2002-07-12 2004-07-01 Basf Ag Process for the separation of ascorbic acid from a polar solvent containing ascorbic acid and 2-keto-L-gulonic acid

Also Published As

Publication number Publication date
DE1904619A1 (en) 1970-08-27
FR2001090A1 (en) 1969-09-26
ES363151A1 (en) 1970-11-16
JPS4830273B1 (en) 1973-09-18
DE1904619C3 (en) 1975-06-12
DK131467C (en) 1976-02-09
DE1904619B2 (en) 1974-10-31
DK131467B (en) 1975-07-21
CS169787B2 (en) 1976-07-29
SE363322B (en) 1974-01-14
AT308290B (en) 1973-06-25
GB1222322A (en) 1971-02-10

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Legal Events

Date Code Title Description
PL Patent ceased