FR2309505B1 - - Google Patents

Info

Publication number
FR2309505B1
FR2309505B1 FR7622060A FR7622060A FR2309505B1 FR 2309505 B1 FR2309505 B1 FR 2309505B1 FR 7622060 A FR7622060 A FR 7622060A FR 7622060 A FR7622060 A FR 7622060A FR 2309505 B1 FR2309505 B1 FR 2309505B1
Authority
FR
France
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
Application number
FR7622060A
Other languages
French (fr)
Other versions
FR2309505A1 (fr
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
Priority claimed from DE2508228A external-priority patent/DE2508228B2/de
Priority claimed from DE2543333A external-priority patent/DE2543333C2/de
Priority claimed from DE19752543332 external-priority patent/DE2543332C3/de
Application filed by Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of FR2309505A1 publication Critical patent/FR2309505A1/fr
Application granted granted Critical
Publication of FR2309505B1 publication Critical patent/FR2309505B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
    • C07D303/02—Compounds containing oxirane rings
    • C07D303/48—Compounds containing oxirane rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms, e.g. ester or nitrile radicals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/90—Regeneration or reactivation
    • B01J23/92—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
    • C07C51/367—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by introduction of functional groups containing oxygen only in singly bound form
    • 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
    • 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
    • C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
    • C07C59/235—Saturated compounds containing more than one carboxyl group
    • C07C59/245—Saturated compounds containing more than one carboxyl group containing hydroxy or O-metal groups
    • C07C59/255—Tartaric acid
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Catalysts (AREA)
FR7622060A 1975-02-26 1976-07-20 Procede pour la preparation d'acide tartrique racemique pur et d'acide meso-tartrique a partir de l'acide maleique et procede pour separer ce dernier Granted FR2309505A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2508228A DE2508228B2 (de) 1975-02-26 1975-02-26 Verfahren zur Herstellung von reiner Traubensäure und von Mesoweinsäure
DE2543333A DE2543333C2 (de) 1975-09-29 1975-09-29 Verfahren zur gleichzeitigen Herstellung von reiner Traubensäure und von meso-Weinsäure
DE19752543332 DE2543332C3 (de) 1975-09-29 1975-09-29 Verfahren zur Abtrennung von Maleinsäure aus synthetischer Weinsäure

Publications (2)

Publication Number Publication Date
FR2309505A1 FR2309505A1 (fr) 1976-11-26
FR2309505B1 true FR2309505B1 (it) 1982-07-16

Family

ID=27186289

Family Applications (2)

Application Number Title Priority Date Filing Date
FR7605305A Granted FR2302293A1 (fr) 1975-02-26 1976-02-25 Procede pour la preparation d'acide tartrique rac
FR7622060A Granted FR2309505A1 (fr) 1975-02-26 1976-07-20 Procede pour la preparation d'acide tartrique racemique pur et d'acide meso-tartrique a partir de l'acide maleique et procede pour separer ce dernier

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR7605305A Granted FR2302293A1 (fr) 1975-02-26 1976-02-25 Procede pour la preparation d'acide tartrique rac

Country Status (1)

Country Link
FR (2) FR2302293A1 (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5344590A (en) * 1993-01-06 1994-09-06 W. R. Grace & Co.-Conn. Method for inhibiting corrosion of metals using polytartaric acids
EP2438012B1 (en) * 2009-06-02 2014-05-07 Akzo Nobel Chemicals International B.V. Process for the preparation of a composition comprising meso-tartaric acid

Also Published As

Publication number Publication date
FR2309505A1 (fr) 1976-11-26
FR2302293A1 (fr) 1976-09-24
FR2302293B1 (it) 1978-07-13

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Legal Events

Date Code Title Description
ST Notification of lapse