CA2268311A1 - A process for the recovery of lactic acid esters and amides from aqueous solutions of lactic acid and/or salts thereof - Google Patents

A process for the recovery of lactic acid esters and amides from aqueous solutions of lactic acid and/or salts thereof

Info

Publication number
CA2268311A1
CA2268311A1 CA002268311A CA2268311A CA2268311A1 CA 2268311 A1 CA2268311 A1 CA 2268311A1 CA 002268311 A CA002268311 A CA 002268311A CA 2268311 A CA2268311 A CA 2268311A CA 2268311 A1 CA2268311 A1 CA 2268311A1
Authority
CA
Canada
Prior art keywords
lactic acid
recovery
moiety
anion exchanger
amides
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
CA002268311A
Other languages
French (fr)
Other versions
CA2268311C (en
Inventor
Aharon Meir Eyal
Patrick R. Gruber
Paul Mcwilliams
David R. Witzke
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.)
Cargill Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Priority claimed from PCT/US1997/017775 external-priority patent/WO1998015519A2/en
Publication of CA2268311A1 publication Critical patent/CA2268311A1/en
Application granted granted Critical
Publication of CA2268311C publication Critical patent/CA2268311C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention provides a process for the recovery of purified lactic acid values from an aqueous feed solution containing lactic acid.
lactic acid salt, or mixtures thereof, comprising: bringing the feed solution into contact with a substantially immiscible anion exchanger to form a substantially water-immiscible phase comprising an anion exchanger-lactic acid adduct; effecting a condensation reaction in the substantially water-immiscible phase between a carboxylic moiety of the lactic acid adduct and a moiety selected from a hydroxyl moiety and a primary or secondary amine moiety to respectively form a lactic acid ester or amine product: and separating the formed lactic acid product from the anion exchanger.
CA002268311A 1996-10-09 1997-10-02 A process for the recovery of lactic acid esters and amides from aqueous solutions of lactic acid and/or salts thereof Expired - Fee Related CA2268311C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IL199388 1996-10-09
IL19938896 1996-10-09
PCT/US1997/017775 WO1998015519A2 (en) 1996-10-09 1997-10-02 A process for the recovery of lactic acid esters and amides from aqueous solutions of lactic acid and/or salts thereof

Publications (2)

Publication Number Publication Date
CA2268311A1 true CA2268311A1 (en) 1998-04-16
CA2268311C CA2268311C (en) 2006-12-12

Family

ID=29596529

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002268311A Expired - Fee Related CA2268311C (en) 1996-10-09 1997-10-02 A process for the recovery of lactic acid esters and amides from aqueous solutions of lactic acid and/or salts thereof

Country Status (1)

Country Link
CA (1) CA2268311C (en)

Also Published As

Publication number Publication date
CA2268311C (en) 2006-12-12

Similar Documents

Publication Publication Date Title
AU601845B2 (en) Process for the production or recovery of acids from metalliferous solutions of such acid
CA2185575A1 (en) A process and extractant composition for extracting acids
EP0017500A3 (en) A process for the separation of a strong mineral acid from an aqueous solution
IE802347L (en) 7-acylamino-3-vinylcephalosporanic acid derivatives
CA2296450A1 (en) Polyalkanolamide tackifying resins for creping adhesives
CA2145407A1 (en) New reagents for peptide couplings
IE842080L (en) 2,6-substituted-3,5-pyridine carboxylic acid derivatives
EP0517242A3 (en) Process for the production of purified lactic acid aqueous solutions starting from fermentation broths
WO1998015519A3 (en) A process for the recovery of lactic acid esters and amides from aqueous solutions of lactic acid and/or salts thereof
AU8913091A (en) Process for producing amino carboxylic acid salt
TW272968B (en)
CA2268311A1 (en) A process for the recovery of lactic acid esters and amides from aqueous solutions of lactic acid and/or salts thereof
CA2178879A1 (en) Process for purifying valine
GB9220327D0 (en) Process
CA2187709A1 (en) Process for decomposing cycloalkyl hydroperoxide
EP0632011A3 (en) Process for the preparation of alcoxy carboxylic acid esters.
DE3665859D1 (en) Process for producing 2,6-naphthalenedicarboxylic acid
GR3035865T3 (en) Process for preparation of 5-hydroxymethylthiazole
ZM6485A1 (en) Recovery of alcohols
EP0496264A3 (en) Process for preparing 2,6-naphthalenedicarboxylic acid
EP1130014A3 (en) Process for the purification of imidoalkanpercarboxylic acids
JPS55100311A (en) Infusion solution containing amino acid and inorganic salt
AU3455397A (en) A process for the separation of amino acids and their salts from an aqueous solution
AU3451097A (en) A process for the recovery of dicarboxylic acid
IL115564A (en) Process for the recovery of ascorbic acid from an aqueous feed solution

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed