FR2367740A1 - Isolating paraffin sulphonic acids from sulphonation mixt. - by adding specified solvent, sepg. aq. phase, then evaporating to obtain prod. useful as biodegradable detergent - Google Patents

Isolating paraffin sulphonic acids from sulphonation mixt. - by adding specified solvent, sepg. aq. phase, then evaporating to obtain prod. useful as biodegradable detergent

Info

Publication number
FR2367740A1
FR2367740A1 FR7631050A FR7631050A FR2367740A1 FR 2367740 A1 FR2367740 A1 FR 2367740A1 FR 7631050 A FR7631050 A FR 7631050A FR 7631050 A FR7631050 A FR 7631050A FR 2367740 A1 FR2367740 A1 FR 2367740A1
Authority
FR
France
Prior art keywords
phase
solvent
sepg
sulphonic
sulphonic 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.)
Granted
Application number
FR7631050A
Other languages
French (fr)
Other versions
FR2367740B1 (en
Inventor
Aristide Boy
Henri Caly
Raoul Ivaldi
Hubert Passedroit
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.)
ATO Chimie SA
Original Assignee
ATO Chimie SA
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 ATO Chimie SA filed Critical ATO Chimie SA
Priority to FR7631050A priority Critical patent/FR2367740A1/en
Priority to GB4209377A priority patent/GB1588363A/en
Priority to DE19772745691 priority patent/DE2745691A1/en
Priority to SE7711502A priority patent/SE441092B/en
Publication of FR2367740A1 publication Critical patent/FR2367740A1/en
Application granted granted Critical
Publication of FR2367740B1 publication Critical patent/FR2367740B1/fr
Granted 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
    • C07C303/44—Separation; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A process for sepg. paraffin sulphonic acids contained in a sulphonic soln. with sulphuric acid, water and opt. non-sulphonated paraffins is provided. A weakly polar organic solvent is added to form an organic phase contg. all the sulphonic acids and an aq. phase contg. almost all the sulphuric acid. The organic solvent is an aliphatic and/or cycloaliphatic ether, ketone, ester or ketoester of >=5C atoms, the solvent forms an azeotrope with water and has a water solubility 7%. The aq. phase is sepd. The organic phase is neutralised evapd. to remove volatiles to recover the molten sulphonates which are then opc. converted to a powder. The prods. are biologically degradable detergents. Compared with a previous process using a weakly polar alcohol as solvent, the above solvents have the advantage of a greater volatility, and ensure all the sulphonic acid is in the solvent phase. The process enables a practically anhydrous sulphonic acid to be isolated, easily converted to a non-caking powder.
FR7631050A 1976-10-13 1976-10-15 Isolating paraffin sulphonic acids from sulphonation mixt. - by adding specified solvent, sepg. aq. phase, then evaporating to obtain prod. useful as biodegradable detergent Granted FR2367740A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7631050A FR2367740A1 (en) 1976-10-15 1976-10-15 Isolating paraffin sulphonic acids from sulphonation mixt. - by adding specified solvent, sepg. aq. phase, then evaporating to obtain prod. useful as biodegradable detergent
GB4209377A GB1588363A (en) 1976-10-13 1977-10-10 Process for preparing paraffin sulphonic acids and sulphonates
DE19772745691 DE2745691A1 (en) 1976-10-13 1977-10-11 PROCESS FOR SEPARATING THE PARAFFIN SULPHIC ACIDS CONTAINED IN A CRUDE SULPHIC ACID SOLUTION
SE7711502A SE441092B (en) 1976-10-13 1977-10-12 PROCEDURE FOR SEPARATION OF C? 717-C? 7130-ALKAN SULPHONIC ACIDS FROM A SULPHONING SOLUTION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7631050A FR2367740A1 (en) 1976-10-15 1976-10-15 Isolating paraffin sulphonic acids from sulphonation mixt. - by adding specified solvent, sepg. aq. phase, then evaporating to obtain prod. useful as biodegradable detergent

Publications (2)

Publication Number Publication Date
FR2367740A1 true FR2367740A1 (en) 1978-05-12
FR2367740B1 FR2367740B1 (en) 1980-09-12

Family

ID=9178796

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7631050A Granted FR2367740A1 (en) 1976-10-13 1976-10-15 Isolating paraffin sulphonic acids from sulphonation mixt. - by adding specified solvent, sepg. aq. phase, then evaporating to obtain prod. useful as biodegradable detergent

Country Status (1)

Country Link
FR (1) FR2367740A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054851A1 (en) * 1980-12-19 1982-06-30 Hoechst Aktiengesellschaft Process for recovering sulfuric acid from the reaction mixture issuing from the sulfoxidation of paraffins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054851A1 (en) * 1980-12-19 1982-06-30 Hoechst Aktiengesellschaft Process for recovering sulfuric acid from the reaction mixture issuing from the sulfoxidation of paraffins

Also Published As

Publication number Publication date
FR2367740B1 (en) 1980-09-12

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