GB2039278B - Method of removing impurities from aromatic acids or their salts - Google Patents

Method of removing impurities from aromatic acids or their salts

Info

Publication number
GB2039278B
GB2039278B GB8000452A GB8000452A GB2039278B GB 2039278 B GB2039278 B GB 2039278B GB 8000452 A GB8000452 A GB 8000452A GB 8000452 A GB8000452 A GB 8000452A GB 2039278 B GB2039278 B GB 2039278B
Authority
GB
United Kingdom
Prior art keywords
salts
removing impurities
aromatic acids
aromatic
acids
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
Application number
GB8000452A
Other languages
English (en)
Other versions
GB2039278A (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.)
Novartis AG
Original Assignee
Ciba Geigy AG
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 Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of GB2039278A publication Critical patent/GB2039278A/en
Application granted granted Critical
Publication of GB2039278B publication Critical patent/GB2039278B/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
    • C07C303/42—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB8000452A 1979-01-09 1980-01-07 Method of removing impurities from aromatic acids or their salts Expired GB2039278B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH16979A CH639061A5 (de) 1979-01-09 1979-01-09 Verfahren zur reinigung von aromatischen saeuren oder deren salzen.

Publications (2)

Publication Number Publication Date
GB2039278A GB2039278A (en) 1980-08-06
GB2039278B true GB2039278B (en) 1983-04-13

Family

ID=4180826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8000452A Expired GB2039278B (en) 1979-01-09 1980-01-07 Method of removing impurities from aromatic acids or their salts

Country Status (6)

Country Link
JP (1) JPS5594333A (US08080257-20111220-C00005.png)
CH (1) CH639061A5 (US08080257-20111220-C00005.png)
DE (1) DE3000304A1 (US08080257-20111220-C00005.png)
FR (1) FR2446276A1 (US08080257-20111220-C00005.png)
GB (1) GB2039278B (US08080257-20111220-C00005.png)
IT (1) IT1127331B (US08080257-20111220-C00005.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9000891A (nl) * 1990-04-14 1991-11-01 Stamicarbon Werkwijze voor het zuiveren van een benzoezuur.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719703A (en) * 1969-04-29 1973-03-06 Atomic Energy Commission Separation of sulfonic acids from sulfuric acid
IT1055433B (it) * 1976-02-23 1981-12-21 Anic Spa Metodo per la purificazione di acqua di scarico contenenti composti organici di carattere anioni co e mezzi adatti allo scopo

Also Published As

Publication number Publication date
CH639061A5 (de) 1983-10-31
FR2446276A1 (fr) 1980-08-08
IT1127331B (it) 1986-05-21
GB2039278A (en) 1980-08-06
FR2446276B1 (US08080257-20111220-C00005.png) 1982-12-03
IT8047535A0 (it) 1980-01-08
DE3000304A1 (de) 1980-07-17
JPS5594333A (en) 1980-07-17

Similar Documents

Publication Publication Date Title
DE3466521D1 (en) Process for the treatment of diluted acids
JPS55145341A (en) Method of removing lattice fault
GB2080130B (en) Method of desalinating water
JPS55106588A (en) Method of removing arsenic from water medium
DE3360710D1 (en) Process for crystallizing alpha-l-aspartyl-l-phenylalanine-methyl ester
DE2861392D1 (en) Process for the separation of stereoisomers of substituted vinylcyclopropanecarboxylic acids
DE3371779D1 (en) Process for the preparation of acids
DE3174810D1 (en) Process for preparing alpha-aromatic group substituted alkanoic acids or esters thereof
DE2966848D1 (en) Method for the removal of impurities from sodium aluminate solution
GB2067988B (en) Process for preparation of 3-alkoxy-4-hydroxyphenylacetic acids
DE3261509D1 (en) Process for preparing aromatic amino-sulphonic acids
GB2039278B (en) Method of removing impurities from aromatic acids or their salts
DE3363304D1 (en) Process for the preparation of esters or salts of aromatic or etheroaromatic acids
GB2032918B (en) Method for purifying fatty acids
JPS55142586A (en) Method of removing nitrate from water
JPS54103245A (en) Method of removing ions from deoxidizerrcontaining brine
IL67948A0 (en) Method for removal of nitrosoamine impurities from herbicides
GB2028308B (en) Process for separation of naphthalenedisulfinic acids
JPS54122237A (en) Method of removing impurities from chlorinated phenol
DE3460249D1 (en) Process for the production of aromatic amino-sulphonic acids
DE2967676D1 (en) Method of removing contaminants from water
DE3261063D1 (en) Process for the removal of organic impurities from phosphoric acid
YU274880A (en) Process for obtaining n-thiocarboxy-anhydride of l-aspartic acid
GB2105314B (en) Process for the dearsenification of polyphosphoric acid
DE3360436D1 (en) Process for the preparation of n-acetylamino-aryl-sulphonic acids

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee