AR002353A1 - Proceso para preparar ácido 2-hidroxi-4-metiltiobutanoico composición hidrolizada y aparato. - Google Patents

Proceso para preparar ácido 2-hidroxi-4-metiltiobutanoico composición hidrolizada y aparato.

Info

Publication number
AR002353A1
AR002353A1 ARP960102984A AR10298496A AR002353A1 AR 002353 A1 AR002353 A1 AR 002353A1 AR P960102984 A ARP960102984 A AR P960102984A AR 10298496 A AR10298496 A AR 10298496A AR 002353 A1 AR002353 A1 AR 002353A1
Authority
AR
Argentina
Prior art keywords
hydroxy
reactor
hydrolysis
acid
methyltibutanoic
Prior art date
Application number
ARP960102984A
Other languages
English (en)
Original Assignee
Novus Int Inc
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 US08/647,161 external-priority patent/US5856567A/en
Application filed by Novus Int Inc filed Critical Novus Int Inc
Publication of AR002353A1 publication Critical patent/AR002353A1/es

Links

Classifications

    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/1812—Tubular reactors
    • B01J19/1837—Loop-type reactors
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/10—Organic substances
    • A23K20/105—Aliphatic or alicyclic compounds
    • 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
    • B01J14/00—Chemical processes in general for reacting liquids with liquids; Apparatus specially adapted therefor
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/1862—Stationary reactors having moving elements inside placed in series
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/1868—Stationary reactors having moving elements inside resulting in a loop-type movement
    • B01J19/1881—Stationary reactors having moving elements inside resulting in a loop-type movement externally, i.e. the mixture leaving the vessel and subsequently re-entering it
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/243—Tubular reactors spirally, concentrically or zigzag wound
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/2435—Loop-type reactors
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/245—Stationary reactors without moving elements inside placed in series
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2455—Stationary reactors without moving elements inside provoking a loop type movement of the reactants
    • B01J19/2465—Stationary reactors without moving elements inside provoking a loop type movement of the reactants externally, i.e. the mixture leaving the vessel and subsequently re-entering it
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/14—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides
    • C07C319/20—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides by reactions not involving the formation of sulfide groups
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00002—Chemical plants
    • B01J2219/00004—Scale aspects
    • B01J2219/00011—Laboratory-scale plants
    • B01J2219/00013—Miniplants
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00002—Chemical plants
    • B01J2219/00027—Process aspects
    • B01J2219/00033—Continuous processes
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2219/00058—Temperature measurement
    • B01J2219/00063—Temperature measurement of the reactants
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00099—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor the reactor being immersed in the heat exchange medium
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00103—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor in a heat exchanger separate from the reactor
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00105—Controlling the temperature by indirect heating or cooling employing heat exchange fluids part or all of the reactants being heated or cooled outside the reactor while recycling
    • B01J2219/0011—Controlling the temperature by indirect heating or cooling employing heat exchange fluids part or all of the reactants being heated or cooled outside the reactor while recycling involving reactant liquids
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00164—Controlling or regulating processes controlling the flow
    • B01J2219/00166—Controlling or regulating processes controlling the flow controlling the residence time inside the reactor vessel
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/18—Details relating to the spatial orientation of the reactor
    • B01J2219/185—Details relating to the spatial orientation of the reactor vertical

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Animal Husbandry (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Un método contínuo para la preparación de ácido 2-hidroxi-4- metiltiobutanoico o una sal del mismo que incluye introducir un ácido mineralacuoso en un reactor de hidrólisis de nitrilo que comprende un reactor de tanque agitadoco ntínuo e introducir 2-hidroxi-4-metiltiobutanonitrilo en elreactor de hidrólisis de nitrilo. El 2-hidroxi-4-metiltiobutanonitrilo es hidrolizado continuamente dentro del reactor de hidrólisis de nitrilo paraproducir una corriente deproducto de dicho reactor que contiene 2-hidroxi-4- metiltiobutanamida. La corriente de producto del reactor de hidrólisis denitrilo se introduce continuamente en un reactor de flujo de hidrólisis de amida. La 2-hidroxi-4-metiltiobutanamidase hidroliza continuamente dentro delreactor de flujo de hidrólisis de amida para producir un producto hidrolizado acuoso terminado que contiene ácido 2-hidroxi-4-metiltiobutanoico. El ácido2-hidroxi-4-metiltiobutanoico se recupera del productohidrolizado acuo so terminado.
ARP960102984A 1995-06-07 1996-06-06 Proceso para preparar ácido 2-hidroxi-4-metiltiobutanoico composición hidrolizada y aparato. AR002353A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US47776895A 1995-06-07 1995-06-07
US08/647,161 US5856567A (en) 1995-06-07 1996-05-21 Continuous hydrolysis process for preparing 2-hydroxy-4-methylthiobutanioc acid or salts thereof

Publications (1)

Publication Number Publication Date
AR002353A1 true AR002353A1 (es) 1998-03-11

Family

ID=27045673

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP960102984A AR002353A1 (es) 1995-06-07 1996-06-06 Proceso para preparar ácido 2-hidroxi-4-metiltiobutanoico composición hidrolizada y aparato.

Country Status (14)

Country Link
US (2) US6268531B1 (es)
EP (1) EP0832062B1 (es)
JP (1) JPH11508876A (es)
CN (1) CN1094925C (es)
AR (1) AR002353A1 (es)
AU (1) AU724680B2 (es)
BR (1) BR9609182A (es)
DE (1) DE69615183T2 (es)
ES (1) ES2164244T3 (es)
MX (1) MX9709477A (es)
PL (1) PL323743A1 (es)
PT (1) PT832062E (es)
RU (1) RU2179550C2 (es)
WO (1) WO1996040630A1 (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5856567A (en) * 1995-06-07 1999-01-05 Novus International, Inc. Continuous hydrolysis process for preparing 2-hydroxy-4-methylthiobutanioc acid or salts thereof
JP3804210B2 (ja) * 1997-03-04 2006-08-02 住友化学株式会社 ２−ヒドロキシ−４−メチルチオブタン酸の製造方法
FR2780968B1 (fr) 1998-07-10 2000-08-18 Rhone Poulenc Nutrition Animal Procede de preparation de l'acide hydroxymethylthiobutyrique
US6649794B2 (en) * 2000-02-18 2003-11-18 Sumitomo Chemical Company, Limited Method for producing 2-Hydroxy-4-Methylthiobutanoic Acid
JP4517474B2 (ja) * 2000-07-25 2010-08-04 住友化学株式会社 ２−ヒドロキシ−４−メチルチオブタン酸の製造方法
JP4517520B2 (ja) * 2001-02-27 2010-08-04 住友化学株式会社 ２−ヒドロキシ−４−メチルチオブタン酸の製造方法
AU2002343599A1 (en) * 2001-11-02 2003-05-19 Millipore Corporation Membrane adsorber device
WO2004026460A1 (en) * 2002-09-20 2004-04-01 Avantium International B.V. Method and apparatus for performing chemical experiments
JP4696496B2 (ja) 2004-08-18 2011-06-08 住友化学株式会社 ２−ヒドロキシ−４−メチルチオ酪酸の製造方法
DE102004041250A1 (de) * 2004-08-26 2006-03-02 Degussa Ag Herstellung von 2-Hydroxy-4-Methylthiobuttersäure
WO2007030389A2 (en) * 2005-09-06 2007-03-15 Novus International Inc. Marine antifouling coating compositions
CN101262940B (zh) * 2005-09-12 2011-03-30 克朗布兰德斯有限公司 乳液聚合用回路反应器
JP5671711B2 (ja) * 2009-06-04 2015-02-18 レール リキッド， ソシエテ アノニム プール レチュード エ レクスプロイタシオン デ プロセデ ジョルジュ クロード トリシリルアミンを生成するための装置および方法
CN102633699B (zh) * 2012-04-28 2013-03-06 重庆紫光天化蛋氨酸有限责任公司 Dl-甲硫氨酸的制备方法
CN108863857B (zh) * 2018-06-29 2024-04-30 浙江龙盛化工研究有限公司 对乙酰氨基苯磺酰氯降温析晶的连续稀释装置及方法
FR3115537B1 (fr) 2020-10-23 2023-01-06 Adisseo France Sas Procédé de fabrication catalytique d’un analogue de la méthionine
FR3120367B1 (fr) 2021-03-04 2024-02-16 Adisseo France Sas Procédé de préparation du 2-hydroxy-4-méthylthiobutyronitrile ou de son équivalent sélénié et applications

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432478A (en) 1945-09-26 1947-12-09 Du Pont Synthesis of methionine
US2443391A (en) 1945-09-26 1948-06-15 Du Pont Methionine isolation process
US2432429A (en) 1945-09-26 1947-12-09 Du Pont Purification of methionine
US2542768A (en) 1945-10-24 1951-02-20 Du Pont Hydroxy-methylmercaptobutyronitrile
US2485236A (en) 1945-10-24 1949-10-18 Du Pont Preparation of methionine and precursors thereof
US2557920A (en) 1946-11-07 1951-06-19 Dow Chemical Co Method for production of amino acids
US2642459A (en) 1948-12-08 1953-06-16 Dow Chemical Co Production and purification of amino acids
US2564105A (en) 1949-08-03 1951-08-14 Du Pont Aqueous methionine nitrile sulfate
US2676190A (en) 1951-10-23 1954-04-20 Du Pont Process for the manufacture of beta-methylmercapto-propionaldehyde
US2688038A (en) 1952-10-24 1954-08-31 Du Pont Hydrolysis of methionine nitrile
US2745745A (en) 1952-10-30 1956-05-15 Monsanto Chemicals Poultry feed
US2946818A (en) 1953-10-01 1960-07-26 Monsanto Chemicals Preparation of hydroxy mercapto butyric acids and derivatives thereof
US2938053A (en) * 1955-12-29 1960-05-24 Monsanto Chemicals Amino acid analogues
CH385823A (de) * 1959-09-01 1964-12-31 Inventa Ag Verfahren zur Herstellung des Calciumsalzes der a-Oxy-y-methylthio-buttersäure
US3272860A (en) 1964-04-02 1966-09-13 Monsanto Co Preparation of methionine analogues
US3773927A (en) 1971-12-20 1973-11-20 Du Pont Preparation of an aqueous slurry of ammonium chloride and methylmercapto-hydroxybutyric acid
US3968152A (en) 1972-10-06 1976-07-06 The Lummus Company Production of aromatic carboxylic acids
GB1542488A (en) 1975-10-10 1979-03-21 Bearn Sa Prod Chim Process for preparing alpha-amino-gamma-methylmercaptobutyronitrile
US4233235A (en) 1979-02-26 1980-11-11 The Procter & Gamble Company Method for making diperoxyacids
US4311803A (en) 1979-05-01 1982-01-19 Phillips Petroleum Company Continuous solution polymerization process
US4335257A (en) 1980-09-05 1982-06-15 E. I. Du Pont De Nemours And Company Preparation of the calcium salt of alpha-hydroxy-gamma-methylmercaptobutyric acid
US4310690A (en) 1980-10-08 1982-01-12 E. I. Du Pont De Nemours And Company Preparation of the calcium salt of α-hydroxy-gamma-methylmercaptobutyric acid
JPS5782339A (en) 1980-11-13 1982-05-22 Asahi Chem Ind Co Ltd Preparation of unsaturated carboxylic acid or its ester
AU1656283A (en) * 1982-07-22 1984-01-26 Gestetner Manufacturing Ltd. Stencil
US4855495A (en) 1983-09-06 1989-08-08 Monsanto Company Enhanced 2-hydroxy-4-methylthiobutanoic acid composition and method of preparation
DE3465194D1 (en) 1983-11-14 1987-09-10 Monsanto Co Process for the preparation of liquid 2-hydroxy-methylthiobutyric acid
US4524077A (en) * 1983-11-14 1985-06-18 Monsanto Company Liquid 2-hydroxy-4-methylthiobutyric acid and process for the preparation thereof
US4579962A (en) 1984-02-24 1986-04-01 Monsanto Company Enhanced 2-hydroxy-4-methylthiobutanoic acid compositions and method of preparation
FR2565225B1 (fr) 1984-06-05 1986-10-17 Centre Nat Rech Scient Procede de synthese en continu d'un a-amino-acide par hydrolyse catalytique chimique et dispositif pour la mise en oeuvre du procede
ES2005784A6 (es) * 1988-02-22 1989-03-16 Desarrollo Tecnico Ind S A Soc Un procedimiento para preparar soluciones acuosas de acido 2-hidroxi-4-metil-tiobutirico.
US5244590A (en) 1989-10-12 1993-09-14 Exxon Chemical Patents Inc. Viscosity index improver
US5068383A (en) 1990-11-09 1991-11-26 Dow Corning Corporation Catalyzed redistribution of polyorganosiloxanes
DE4110009A1 (de) 1991-03-27 1992-10-01 Basf Ag Verfahren zur herstellung von abs-formmassen
US5420304A (en) 1992-03-19 1995-05-30 Biopak Technology, Ltd. Method to produce cyclic esters
DE4236058A1 (de) 1992-10-26 1994-04-28 Basf Ag Verfahren zur radikalischen Massepolymerisation von Vinylmonomeren
US5352837A (en) * 1993-06-08 1994-10-04 Novus International, Inc. Process for the preparation of 3-(methylthio)propanal
PL180933B1 (pl) 1994-07-11 2001-05-31 Degussa Sposób otrzymywania kwasu 2-hydroksy-4-metylotiomasłowego (MHA), kwas 2-hydroksy-4-metylotiomasłowy
DE4428608C1 (de) 1994-08-12 1996-02-29 Degussa Verfahren zur Gewinnung von 2-Hydroxy-4-methylthiobuttersäure (MHA)
US5583243A (en) 1995-05-19 1996-12-10 Zinpro Corporation Salts of alpha-hydroxy aliphatic carboxylic acids and uses thereof
FR2780968B1 (fr) 1998-07-10 2000-08-18 Rhone Poulenc Nutrition Animal Procede de preparation de l'acide hydroxymethylthiobutyrique

Also Published As

Publication number Publication date
JPH11508876A (ja) 1999-08-03
MX9709477A (es) 1998-02-28
PT832062E (pt) 2002-03-28
DE69615183T2 (de) 2002-05-29
CN1094925C (zh) 2002-11-27
EP0832062A1 (en) 1998-04-01
US6531101B2 (en) 2003-03-11
US6268531B1 (en) 2001-07-31
DE69615183D1 (de) 2001-10-18
AU724680B2 (en) 2000-09-28
EP0832062B1 (en) 2001-09-12
AU5974196A (en) 1996-12-30
WO1996040630A1 (en) 1996-12-19
US20010001105A1 (en) 2001-05-10
ES2164244T3 (es) 2002-02-16
CN1189819A (zh) 1998-08-05
PL323743A1 (en) 1998-04-14
RU2179550C2 (ru) 2002-02-20
BR9609182A (pt) 1999-05-11

Similar Documents

Publication Publication Date Title
AR002353A1 (es) Proceso para preparar ácido 2-hidroxi-4-metiltiobutanoico composición hidrolizada y aparato.
DE69942140D1 (de) Verfahren zur Herstellung von L-Aminosäuren
FR2699168B1 (fr) Procédé de traitement d'un matériau comprenant un polymère par hydrolyse.
DE69631996D1 (de) Verfahren zur Herstellung von acylierten Proteinpuder
MY114013A (en) Continuous hydrolysis process for preparing 2-hydroxy-4 -methylthiobutanoic acid or salts thereof
GR3019049T3 (en) A method of strengthening glass
DE69632199T2 (de) Verfahren zur herstellung von d-pantoinsäure und d-pantothensäure oder deren salze
ATE227244T1 (de) Verfahren zur herstellung wässriger chlordioxid- lösungen
GB1452591A (en) Process for producing optically active amino acid derivatives and the corresponding optically active amino acids
ATE199714T1 (de) Verfahren zur herstellung von 5-hydroxymethyl- thiazole
ATE147382T1 (de) Verfahren zur herstellung von sclareolid
DE69203764T2 (de) Verfahren zum Reduzieren des Chlorohydrin-Gehaltes in hydrolysierten Proteinen.
DE58909067D1 (de) Verfahren zur herstellung von l-aminosäuren und aminosäure-amiden.
Taylor et al. Enzymatic processing of materials containing chromium and protein
JPS5668649A (en) Preparation of gamma-amino-beta-hydroxybutyric acid
JPS57158743A (en) Preparation of alpha-amino acid amide
ATE197596T1 (de) Verfahren zur herstellung von reinem guarkernmehl
TW430643B (en) Process for the manufacture of thioglycolic acid
FR2440970A1 (fr) Procede de production de colorants azoiques
DE59607329D1 (de) Verfahren zur herstellung von n-acetyl-d,l-alpha-aminocarbonsäuren
JPS5257129A (en) Process for hydroquinone
JPS57112356A (en) Extraction of amino acid from shellfish
DE69810084T2 (de) Verfahren zur herstellung von 2-hydroxy-6-trifluormethylpyridin
JPS5692254A (en) Purification of unsaturated amide aqueous solution
JPS5673051A (en) Preparation of mixed amino acid from waste water of fish processing factory

Legal Events

Date Code Title Description
FG Grant, registration