WO2006007957A1 - Process for preparing monomers and polymers thereof - Google Patents

Process for preparing monomers and polymers thereof Download PDF

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Publication number
WO2006007957A1
WO2006007957A1 PCT/EP2005/007131 EP2005007131W WO2006007957A1 WO 2006007957 A1 WO2006007957 A1 WO 2006007957A1 EP 2005007131 W EP2005007131 W EP 2005007131W WO 2006007957 A1 WO2006007957 A1 WO 2006007957A1
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WO
WIPO (PCT)
Prior art keywords
process according
biocatalyst
ethylenically unsaturated
nitrile
acrolein
Prior art date
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PCT/EP2005/007131
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English (en)
French (fr)
Inventor
Dinesh Mistry
Jatinder Singh Kullar
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Ciba Specialty Chemicals Water Treatments Limited
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 Specialty Chemicals Water Treatments Limited filed Critical Ciba Specialty Chemicals Water Treatments Limited
Priority to JP2007521827A priority Critical patent/JP4999686B2/ja
Priority to US11/631,993 priority patent/US20080038788A1/en
Priority to EP05787262.4A priority patent/EP1774011B1/en
Priority to KR1020077003722A priority patent/KR101301025B1/ko
Priority to CN200580024156.2A priority patent/CN1989251B/zh
Priority to AU2005263416A priority patent/AU2005263416C1/en
Priority to KR1020137010623A priority patent/KR20130048279A/ko
Priority to ES05787262.4T priority patent/ES2544233T3/es
Priority to MX2007000693A priority patent/MX275062B/es
Priority to CA2573627A priority patent/CA2573627C/en
Priority to BRPI0513485-4A priority patent/BRPI0513485B1/pt
Publication of WO2006007957A1 publication Critical patent/WO2006007957A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
    • C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
    • C07C57/03—Monocarboxylic acids
    • C07C57/04—Acrylic acid; Methacrylic acid
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/04—Acids; Metal salts or ammonium salts thereof
    • C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00—Carboxylic acid amides
    • C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C233/02—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
    • C07C233/04—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
    • C07C233/05—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/52—Amides or imides
    • C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
    • C08F220/56—Acrylamide; Methacrylamide
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P13/00—Preparation of nitrogen-containing organic compounds
    • C12P13/02—Amides, e.g. chloramphenicol or polyamides; Imides or polyimides; Urethanes, i.e. compounds comprising N-C=O structural element or polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00—Preparation of oxygen-containing organic compounds
    • C12P7/40—Preparation of oxygen-containing organic compounds containing a carboxyl group including Peroxycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00—Preparation of oxygen-containing organic compounds
    • C12P7/62—Carboxylic acid esters

Definitions

  • the present invention relates to processes for preparing ethylenically unsaturated amides or ethylenically unsaturated carboxylic acids and their salts from the corresponding ethylenically unsaturated nitriles.
  • biocatalysts such as microorganisms that contain enzymes, for conducting chemical reactions, or to use enzymes that are free of microorganisms.
  • various ethylenically unsaturated monomers can be prepared by converting a substrate starting material into the desired monomer by use of a biocatalyst.
  • Nitrile hydratase enzymes are known to catalyse the hydration of nitriles to the corresponding amides.
  • nitrile hydratase enzymes can be synthesized by a variety of microorganisms, for instance microorganisms of the genus Bacillus, Bacteridium, Micrococcus, Brevibacterium, Corynebacterium, Pseudomonas, Acinetobacter, Xanthobacter, Streptomyces, Rhizobium, Klebsiella, Enterobacter, Erwinia, Aeromonas, Citrobacter, Achromobacter, Agrobacterium, Pseudonocardia, Rhodococcus and Comomonas.
  • EP-O 307 926 describes the culturing of Rhodococcus rhodochrous, specifically strain J1 in a culture medium that contains cobalt ions.
  • the nitrile hydratase can be used to hydrate nitriles into amides, and in particular the conversion of 3-cyanopyridine to nicotinamide.
  • Rhodococcus rhodochrous J1 This organism is further described in EP-0362829, which describes a method for cultivating bacteria of the species Rhodococcus rhodochrous comprising at least one of urea and cobalt ion for preparing the cells of Rhodococcus rhodochrous having nitrile hydratase activity. Specifically described is Rhodococcus rhodochrous J1.
  • Rhodococcus rhodochrous J1 is used commercially to manufacture acrylamide monomer from acrylonitrile and this process has been described by Nagasawa and Yamada, Pure Appl. Chem. 67: 1241-1256 (1995).
  • Acrolein generally occurs as a byproduct during the manufacture of acrylonitrile. Often the amount of acrolein present in acrylonitrile will be above 2 ppm and often significantly higher than this, for instance 20 ppm and sometimes as much as 50 or 100 ppm or higher.
  • microorganisms to remove impurities including acrolein from waste streams has been described by Wyatt and Knowles in International Biodeterioration and Biodegradation (1995) p227-248. They described the use of a mixed culture of microbes in the form of an actively growing culture to detoxify a mixed waste stream. It is expected that a live mixed culture to degrade low levels of acrylic species including acrolein would occur readily. .
  • nitriles include acrylonitrile, acetonitrile and acrolein cyanohydrin as they suggest that acrolein is present in the form of acrolein cyanohydrin, thus they describe the capability of their microorganism to convert acrolein cyanohydrin to acid.
  • the detoxification of nitriles particularly those present in waste streams, including acrolein cyanohydrin to their amide and acid counterparts is described.
  • acrylonitrile which is used to produce acrylamide or acrylic acid is essentially pure and free from impurities such as acrolein.
  • the presence of acrolein in acrylamide monomer or blends of monomers containing acrylamide and/or acrylic acid generally results in unwanted cross-linking of the polymer.
  • Such cross-linking is undesirable, since in the preparation of water soluble polymers, undesirable cross-linking would result in forming at least partially insoluble polymers.
  • acrolein brings about uncontrolled cross- linking, its presence in monomer mixtures containing additives used to form intentionally cross-linked polymer products can also be undesirable, because such products may be rendered too cross-linked for the particular application.
  • GB-A-2114118 describes a method for removing aldehyde impurities in acrylonitrile and acrylamide.
  • the method states that aldehyde impurities, such as acrolein, in acrylonitrile and acrylamide can be removed by contacting with a weakly basic gel type polystyrene-polyamine type anion exchange resin having a styrene-divinylbenzene matrix and primary and/or secondary functional groups.
  • the quality of acrylamide is improved which enables the production of polymers of satisfactory molecular weight for use as flocculants in water treatment and other applications.
  • EP-A-0110861 concerns a process for the removal of acrolein from acrylonitrile product streams.
  • Acrolein is removed from a crude acrylonitrile product stream in a recovery column by maintaining the pH in the zone of maximum acrolein concentration of the recovery column at 5.25 to 7. Most of the acrolein exits the column through the bottom stream. High purity acrylonitrile is recovered from the top stream.
  • EP-A-0999207 reveals a method for removal of aldehydes from chemical manufacturing production streams using a distillative purification technique.
  • the method describes improving purification efficiency when distilling off aldehydes such as acrolein during chemical manufacturing processes by adding a substituted aromatic amine (2-amino aniline, 3,4-dimethyl aniline and 4-ethyl aniline) prior to the distillation column.
  • US 5606094 describes a method for removing acrolein from a gaseous or liquid mixture by reaction with a chemical scavenger such as sodium hypochlorite, hydroxylamine, urea, thiourea and sodium bisulphate. This method particularly concerns removing acrolein from gaseous or liquid mixtures also containing acrylonitrile where the acrolein is selectively removed.
  • a chemical scavenger such as sodium hypochlorite, hydroxylamine, urea, thiourea and sodium bisulphate.
  • the biocatalyst may be a microorganism in the form of whole microbial cells or fractured microbial cells that contains an enzyme or enzymes capable of converting an ethylenically unsaturated nitrile to the corresponding amide or carboxylic acid or its salts.
  • the enzymes could be nitrile hydratase, nitrile hydratase and amidase or nitrilase for example.
  • the biocatalyst may be used as a fermentation broth containing the cellular material; cells or disrupted cellular material recovered by centrifuging; an aqueous suspension prepared using any suitable suspending medium such as water or physiologically compatible buffer solution.
  • the biocatalyst can be a purified enzyme or mixture of enzymes extracted from the microorganism.
  • the process concerns the manufacture of an ethylenically unsaturated amide from the corresponding nitrile, and especially the manufacture of (meth) acrylamide from (meth) acrylonitrile.
  • the biocatalyst is a microorganism that is capable of producing a nitrile hydratase.
  • the process relates to the manufacture of an ethylenically unsaturated carboxylic acid from the corresponding nitrile, and especially the manufacture of (meth) acrylic acid (or salts thereof) from (meth) acrylonitrile.
  • the biocatalyst is a microorganism that is capable of producing a both a nitrile hydratase and an amidase.
  • the process relates to the manufacture of an ethylenically unsaturated carboxylic acid from the corresponding nitrile, and especially the manufacture of (meth) acrylic acid (or salts thereof) from (meth) acrylonitrile.
  • the biocatalyst is a microorganism that is capable of producing a nitrilase.
  • the biocatalyst could for instance be a microorganism selected from the genus Bacillus, Bacteridium, Micrococuss, Brevibacterium, Corynebacterium, Pseudomonas, Acinetobacter, Xanthobacter, Streptomyces, Rhizobium, Klebsiella, Enterobacter, Erwinia, Aeromonas, Citrobacter, Achromobacter, Agrobacterium, Pseudonocardia, Dietzia and Rhodococcus.
  • the biocatalyst is especially a microorganism of the Rhodococcus genus, and could be of the Rhodococcus rhodochrous species.
  • Rhodococcus rhodochrous J1 is Rhodococcus rhodochrous J1 as described in EP-A-0307926.
  • a particularly suitable biocatalyst is Rhodococcus rhodochrous strain 2368 (NCIMB 41164) which is described and claimed in our pending International application PCT/EP04/013252 (which has been allocated case reference number BT/3- 22351).
  • the biocatalyst may be a mutant of Rhodococcus rhodochrous strain 2368 or a nitrile hydratase. obtainable from Rhodococcus rhodochrous strain 2368 or a mutant thereof.
  • a further microorganism suitable for the preparation of ethylenically unsaturated amides or acids and their salts thereof is Dietzia natronolimnaios NCIMB 41165, or a further example is Rhodococcus ruber NCIMB 40833 and further Rhodococcus ruber NCIMB 40757.
  • the biocatalyst may comprise cellular material in the form of whole cells or fractured cells and optionally comprises fermentation broth.
  • the cellular material may include any of the constituents of a microbial cell, for instance including cell wall material, cell nucleic acid material (for instance DNA or RNA), cytoplasm or proteins.
  • the biocatalyst comprising of a microorganism is introduced into an aqueous medium suitable for carrying out the culturing of the microorganism.
  • a suspension of the biocatalyst for instance whole cells of the microorganism, may be formed.
  • a nitrile for instance acrylonitrile or methacrylonitrile, is fed into the aqueous medium comprising the biocatalyst in such a way that the concentration of (meth) acrylonitrile in the aqueous medium is maintained at up to 6% by weight.
  • Nitriles such as acrylonitrile or methacrylonitrile is more preferably fed into the reaction medium and the reaction allowed to continue until the concentration of an ethylenically unsaturated monomer, either amide, for instance acrylamide or methacrylamide, or carboxylic acid, for instance acrylic acid (or salts) or methacrylic acid (or salts), reaches the desired level, in particular between 30 and 55% by weight. Most preferably the concentration is around 35-50% by weight.
  • nitrile used in the process of the invention will contain above 2 ppm acrolein (calculated by weight based on total weight of nitrile) and often significantly higher than this, for instance 20 ppm and as much as 50 or 100 ppm or higher.
  • the invention also includes the use of a biocatalyst for the purpose of reducing acrolein in an ethylenically unsaturated monomer.
  • a biocatalyst for the purpose of reducing acrolein in an ethylenically unsaturated monomer.
  • the biocatalyst can be used to reduce the level of acrolein in ethylenically unsaturated monomers selected from the group consisting of (meth) acrylamide, (meth) acrylic acid (or salts) and (meth) acrylonitrile.
  • the biocatalyst may include any of the preferred features described above.
  • a particular advantage of the present invention is that monomers obtained from (meth) acrylonitrile can be prepared conveniently without the need for removal of acrolein.
  • acrylamide and acrylic acid monomers can be streamlined.
  • the monomers produced by this process are of high-quality, and containing less than 2 ppm acrolein, and usually undetectable levels or no acrolein.
  • polymers free from the deleterious effects of acrolein can be conveniently prepared from a monomer or monomer blend containing (meth) acrylamide and (meth) acrylic acid (or salts) that have been obtained directly from acrylonitrile that contains high levels of acrolein.
  • the ethylenically unsaturated monomer is selected from the group consisting of (meth) acrylamide and (meth) acrylic acid (or salts).
  • the biocatalyst may include any of the preferred features described above. Generally the amount of acrolein present in the nitrile is as described previously.
  • the ethylenically unsaturated monomer can be used in the process alone to form the homopolymer or it can be mixed with other polymerisable compounds including ethylenically unsaturated monomers to form a monomer mixture that is polymerised to form a copolymer of the ethylenically unsaturated monomer.
  • Any suitable co-monomer may be used for this purpose, preferably where the ethylenically unsaturated monomer is water-soluble.
  • the co-monomer should desirably be water-soluble or potentially water-soluble, such as anhydrides.
  • Typical co-monomers include (meth) acrylamide, (meth) acrylic acid (or salts), itaconic acid (or salts), maleic acid (or salts), maleic anhydride, vinyl sulfonic acid (or salts), allyl sulfonic acid (or salts), 2-acrylamido-2-methyl propane sulfonic acid (or salts), dimethyl amino ethyl (meth) acrylate (or quaternary ammonium salts), dimethyl amino propyl (meth) acrylamide (or quaternary ammonium salts), N-vinyl pyrrolidone, N-vinyl formamide, vinyl acetate, acrylonitrile, (meth) acrylic esters of Ci -3 o alcohols.
  • the salts of the above stated acid monomers may be of any suitable cation but preferably alkali metal or ammonium salts.
  • the process of the present invention is particular suitable for preparing high molecular weight water-soluble or water swellable polymers.
  • the polymers may for instance be linear, branched or cross-linked.
  • the polymers are high molecular weight substantially water-soluble that exhibit an intrinsic viscosity (IV) of at least 3 dl/g (measured using a suspended level viscometer in 1M sodium chloride at 25 0 C).
  • IV intrinsic viscosity
  • the polymers will have intrinsic viscosities of at least 4 dl/g and generally significantly higher, for instance at least 7 or 8 dl/g.
  • the polymers will have IVs of at least 10 or 12 dl/g and could be as high as 20 or 30 dl/g.
  • the water-soluble or water-swellable polymer prepared according to the process of the present invention may be cationic, anionic, non-ionic or amphoteric. It may be substantially linear or alternatively branched or cross- linked.
  • Cross-linked or branched polymers are prepared by incorporating a branching or cross-linking agent into the monomer blend.
  • the cross-linking or branching agent may be for instance a di- or multifunctional material that reacts with functional groups pendant on the polymer chain, for instance multivalent metal ions or amine compounds which can react with pendant carboxylic groups.
  • the cross-linking or branching agent will be a poly- ethylenically unsaturated compound, which becomes polymerised into two or more polymer chains.
  • cross-linking agents include methylene- bis-acrylamide, tetra allyl ammonium chloride, triallyl amine and ethylene glycol diacrylate.
  • the polymers may be highly crosslinked and therefore water insoluble but water swellable.
  • the polymer may be water soluble and either substantially linear or slightly branched, for instance prepared using less than 10 ppm cross-linking/branching monomer.
  • cross-linked polymers branched water-soluble polymers or linear water-soluble polymers, it is important that the monomers are free from acrolein, since this could lead to unpredictable levels of cross-linking or branching which would have deleterious effect on properties of the polymer.
  • Particularly preferred polymers made by the process of the invention include homopolymers or copolymers of acrylamide or methacrylamide.
  • the copolymers include any of the above stated co-monomers but preferably it is a copolymer of acrylamide with sodium acrylate or a copolymer of acrylamide with quaternary ammonium and acid salts of dimethylaminoethyl (meth)acrylate .
  • Especially preferred acrylamide homo or copolymers are of high molecular weight and exhibit high intrinsic viscosity as defined above.
  • the polymer is generally formed by subjecting the ethylenically unsaturated monomer or a monomer mixture comprising the ethylenically unsaturated monomer to polymerisation conditions. This may be achieved by heating or irradiation, for instance using ultraviolet light.
  • polymerisation initiators are introduced into the monomer or mixture of monomers to initiate polymerisation. Desirably this may be achieved by the use of redox initiators and/or thermal initiators.
  • redox initiators include a reducing agent such as sodium sulphite, sulphur dioxide and an oxidising compound such as ammonium persulphate or a suitable peroxy compound, such as tertiary butyl hydroperoxide etc.
  • Redox initiation may employ up to 10,000 ppm (based on weight of monomer) of each component of the redox couple.
  • each component of the redox couple is often less than 1000 ppm, typically in the range 1 to 100 ppm, normally in the range 4 to 50 ppm.
  • the ratio of reducing agent to oxidizing agent may be from 10:1 to 1 :10, preferably in the range 5:1 to 1:5, more preferably 2:1 to 1:2, for instance around 1:1.
  • Thermal initiators would include any suitable initiator compound that releases radicals at an elevated temperature, for instance azo compounds, such as azobisisobutyronitrile (AZDN), 4,4'-azobis-(4-cyanovaleric acid) (ACVA).
  • AZDN azobisisobutyronitrile
  • ACVA 4,4'-azobis-(4-cyanovaleric acid)
  • thermal initiators are used in an amount of up 10,000 ppm, based on weight of monomer. In most cases, however, thermal initiators are used in the range 100 to 5,000 ppm preferably 200 to 2,000 ppm, usually around 1 ,000 ppm.
  • an aqueous solution of water soluble monomer may be polymerised by solution or bulk polymerisation to provide an aqueous solution or gel or by reverse phase polymerisation in which an aqueous solution of monomer is suspended in a water immiscible liquid and polymerised to form polymeric beads or alternatively by emulsifying aqueous monomer into an organic liquid and then effecting polymerisation.
  • reverse phase polymerisation examples are given in EP-A-150933, EP-A-102760 or EP-A-126528. The following examples are intended to illustrate the invention, without being in any way limiting.
  • Rhodococcus rhodochrous strain 2368 (0.11 gram dry cells) and containing nitrile hydratase, is added to water (625g). The reaction mixture is heated up to 25°C with stiring.
  • Acrylonitrile containing 50 ppm acrolein is fed into the reactor at a rate to maintain the concentration of acrylonitrile at a maximum of 3%. After 300mins the acrylonitrile is fully converted to acrylamide at a final concentration of approximately 50%w/w. Analysis of the acrylamide shows it to be free of acrolein to below detectable limits.
  • the method of analysis used for low levels (below 5 ppm) of acrolein is GC-MS and for levels of acrolein above this GC-FID can be used.
  • Acrolein reduction was studied using an acrylonitrile solution containing an acrolein level of 500 ppm.
  • Rhodococcus rhodochrous 2368 (0.01 gram dry cells) is added to a mixture of acrylonitrile (1 gram) and water (19.0 grams) and acrolein in a 25 ml bottle. The bottle was incubated at 15 0 C with continuous stirring. Samples were withdrawn periodically and centrifuged prior to analysis by GC-FID for acrolein content.
  • Acrolein reduction was studied using an acrylonitrile solution containing an acrolein level of 500 ppm.
  • Rhodococcus rhodochrous J1 (0.01 gram dry cells) is added to a mixture of acrylonitrile (1 gram) and water (19.0 grams) and acrolein in a 25 ml bottle. The bottle was incubated at 15°C with continuous stirring. Samples were withdrawn periodically and centrifuged prior to analysis by GC-FID for acrolein content. After 10 minutes the acrolein level in the mixture reduced from 500 ppm to below detectable limits.
  • Example 4 Example 1 is repeated using acrylonitrile containing acrolein levels less than 2 ppm. Analysis of the acrylamide shows it to be free of acrolein.
  • High molecular weight polymer prepared using acrylamide made from acrylonitrile containing 50 ppm acrolein from Example 1 is of similar quality to high molecular weight polymers using acrylamide prepared from acrylonitrile that contained ⁇ 2 ppm acrolein.
  • the performance of the polymer as flocculant in waste water treatment applications shows no differences by varying the levels of acrolein in the acrylonitrile.
  • the solubility and molecular weight of polymer manufactured is also suitable for use in paper making applications.

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PCT/EP2005/007131 2004-07-19 2005-07-01 Process for preparing monomers and polymers thereof WO2006007957A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP2007521827A JP4999686B2 (ja) 2004-07-19 2005-07-01 モノマー及びそのポリマーを調製する方法
US11/631,993 US20080038788A1 (en) 2004-07-19 2005-07-01 Process for Preparing Monomers and Polymers Thereof
EP05787262.4A EP1774011B1 (en) 2004-07-19 2005-07-01 Process for preparing monomers and polymers thereof
KR1020077003722A KR101301025B1 (ko) 2004-07-19 2005-07-01 단량체 및 이의 중합체의 제조방법
CN200580024156.2A CN1989251B (zh) 2004-07-19 2005-07-01 单体及其聚合物的制备方法
AU2005263416A AU2005263416C1 (en) 2004-07-19 2005-07-01 Process for preparing monomers and polymers thereof
KR1020137010623A KR20130048279A (ko) 2004-07-19 2005-07-01 단량체 및 이의 중합체의 제조방법
ES05787262.4T ES2544233T3 (es) 2004-07-19 2005-07-01 Procedimientos de preparación de monómeros y polímeros de los mismos
MX2007000693A MX275062B (es) 2004-07-19 2005-07-01 Proceso para preparar monomeros y sus polimeros.
CA2573627A CA2573627C (en) 2004-07-19 2005-07-01 Process for preparing monomers and polymers using rhodococcus genus
BRPI0513485-4A BRPI0513485B1 (pt) 2004-07-19 2005-07-01 Processos para preparar uma amida etilenicamente insaturada a partir da nitrila etilenicamente insaturada correspondente e para preparar um polímero a partir de um monômero, e uso de um biocatalisador

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GBGB0416101.4A GB0416101D0 (en) 2004-07-19 2004-07-19 Process for preparing monomers and polymers thereof
GB0416101.4 2004-07-19

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CN111269848A (zh) * 2019-12-30 2020-06-12 浙江工业大学 赤红球菌jj-3及其在降解丙烯酸中的应用
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JP2019176835A (ja) * 2018-03-30 2019-10-17 三井化学株式会社 アミド化合物の製造方法
WO2024004661A1 (ja) * 2022-06-30 2024-01-04 三井化学株式会社 変異型ニトリルヒドラターゼ、該変異型ニトリルヒドラターゼをコードする核酸、該核酸を含むベクター及び形質転換体、該変異型ニトリルヒドラターゼの製造方法、並びにアミド化合物の製造方法

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US20110021819A1 (en) * 2008-03-14 2011-01-27 Dia-Nitrix Co., Ltd. Process for production of amide compounds
US8889907B2 (en) * 2008-03-14 2014-11-18 Mitsubishi Rayon Co., Ltd. Process for production of amide compounds
EP2749637A1 (en) * 2012-12-27 2014-07-02 Kemira Oyj Bacterial strain Rhodococcus aetherivorans VKM Ac-2610D producing nitrile hydratase, method of its cultivation and method for producing acrylamide
WO2014102703A1 (en) * 2012-12-27 2014-07-03 Kemira Oyj BACTERIAL STRAIN RHODOCOCCUS AETHERIVORANS VKM Ac-2610D PRODUCING NITRILE HYDRATASE, METHOD OF ITS CULTIVATION AND METHOD FOR PRODUCING ACRYLAMIDE
CN105121626A (zh) * 2012-12-27 2015-12-02 凯米罗总公司 产腈水合酶的细菌菌株食醚红球菌VKM Ac-2610D、其培养方法以及生产丙烯酰胺的方法
US9518279B2 (en) 2012-12-27 2016-12-13 Kemira Oyj Bacterial strain Rhodococcus aetherivorans VKM Ac-2610D producing nitrile hydratase, method of its cultivation and method for producing acrylamide
US10138459B2 (en) 2012-12-27 2018-11-27 Kemira Oyj Bacterial strain Rhodococcus aetherivorans VKM Ac-2610D producing nitrile hydratase, method of its cultivation and method for producing acrylamide
CN111269848A (zh) * 2019-12-30 2020-06-12 浙江工业大学 赤红球菌jj-3及其在降解丙烯酸中的应用
CN111269848B (zh) * 2019-12-30 2022-03-18 浙江工业大学 赤红球菌jj-3及其在降解丙烯酸中的应用
EP4279600A4 (en) * 2021-02-10 2025-06-11 Mitsubishi Chemical Corporation Improved nitrile hydratase reactivity using aldehyde

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