EP4172237A1 - Procédé d'alcoxylation amélioré - Google Patents
Procédé d'alcoxylation amélioréInfo
- Publication number
- EP4172237A1 EP4172237A1 EP21746073.2A EP21746073A EP4172237A1 EP 4172237 A1 EP4172237 A1 EP 4172237A1 EP 21746073 A EP21746073 A EP 21746073A EP 4172237 A1 EP4172237 A1 EP 4172237A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- acid
- formula
- compound
- fatty
- less
- 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.)
- Pending
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/04—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers only
- C08G65/06—Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
- C08G65/08—Saturated oxiranes
- C08G65/10—Saturated oxiranes characterised by the catalysts used
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
- C08G65/2615—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen the other compounds containing carboxylic acid, ester or anhydride groups
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- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the alkali- or alkaline earth metals or beryllium
- B01J23/04—Alkali metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/41—Compounds containing sulfur bound to oxygen
- C08K5/42—Sulfonic acids; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G2650/28—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type
- C08G2650/58—Ethylene oxide or propylene oxide copolymers, e.g. pluronics
Definitions
- the present invention relates to an improved alkoxylation process, more particularly a process for preparing alkoxylated compounds, in particular alkoxylated compounds of high molar masses, and more particularly alkoxylated compounds of high molar masses and comprising a fatty chain.
- alkoxylated compounds also called alkoxylates in the remainder of the description
- fatty chain alkoxylates are compounds which are increasingly used in particular as additives, adjuvants, chemical intermediates, surfactants.
- active agents nonionic surfactants
- others in various fields of application, such as for example in the chemical industry in general, in the pharmaceutical industry, cosmetics, food industry, phytosanitary, textile, in the industry of cleaning, ores, fertilizers, oil and gas extraction, road construction, coatings, adhesives, sealants, lubrication, paper, and others, to name just the main areas of application .
- the alkoxylated compounds must generally and most often have high purities, that is to say contain quantities as low as possible of impurities, and in particular of undesirable products, and more particularly those generated during the synthesis of said alkoxylated compounds.
- alkoxylated compounds in particular high molecular alkoxylates, and more particularly high molecular alkoxylates comprising a fatty chain, often remains difficult to carry out and in particular when it is desired to obtain products exhibiting a high purity, that is to say with the lowest possible quantities of by-products, with good manufacturing yields.
- This patent further indicates that the elimination of unpleasant odors is carried out by neutralization of the product of the propoxylation reaction with an acid of pK a less than 5, at a temperature between 80 ° C and 130 ° C then by brought into contact with water, at a temperature between 80 ° C and 130 ° C.
- the recovery of the final product, without bad odors, comprises the elimination of water and a stripping of the formed propionaldehyde or its derivatives.
- alkoxylated compounds in particular of alkoxylated compounds of high molar masses, and more particularly of alkoxylated compounds of high molar masses and comprising a fatty chain meeting the purity criteria of more and more severe imposed by industries which use such molecules, in particular as nonionic surfactants, synthetic intermediates and others, as indicated above.
- Another objective is to provide a process for the synthesis of alkoxylated compounds, in particular of alkoxylated compounds of high molar masses, and more particularly of alkoxylated compounds of high molar masses and comprising a fatty chain which can be easily industrialized and advantageously which can be used. easily adapted to the techniques and installations already existing and used for the synthesis of such compounds. It has now been discovered that the aforementioned objectives can be achieved, in whole or at least in part, by virtue of the present invention which will be described in more detail in the description which follows.
- the present invention relates to the process for preparing compounds of formula (1):
- - R represents a fatty hydrocarbon chain comprising from 8 to 60 carbon atoms, linear or branched, optionally comprising one or more saturated or unsaturated rings, and possibly comprising one or more oxygen atoms,
- - Ak represents an alkylene unit with 2, 3 or 4 carbon atoms, preferably with 2 or 3 carbon atoms, and
- - n is an integer between 10 and 250, preferably between 15 and 200, more preferably between 18 and 160, limits included, said process comprising at least the following steps: a) reaction of a compound of formula R-OH with at least one alkylene oxide, in presence of a catalyst, b) treatment of the reaction medium with an acid whose pK a is less than or equal to 3.5, and c) recovery of the compound of formula R- (Ak-0-) n H by treatment of the medium reaction thus neutralized.
- fatty chain R present in the compound of formula (1) and the compound of formula R-OH
- a hydrocarbon chain comprising from 8 to 60 carbon atoms , preferably 8 to 40 carbon atoms, more preferably 10 to 30 carbon atoms, limits included.
- This fatty chain R can comprise one or more rings, saturated or partially or totally unsaturated, said chain can also be saturated or comprise one or more unsaturations, most often in the form of double (s) bond (s), triple (s) ) bond (s), or combinations of these unsaturations.
- This fatty chain may be linear or branched and may contain one or more oxygen atoms, for example in the form of ether, alcohol, acid, ester functions, as well as the combinations of two or more of these oxygen-bearing functions, to name only the most common functions carrying at least one oxygen atom.
- the polyalkoxylated chains are not considered to be fatty chains within the meaning of the present invention, but the R fatty chains within the meaning of the invention can themselves comprise one or more polyalkoxylated chains.
- the compound of formula R-OH can be of any type well known to those skilled in the art and in particular can be chosen from fatty alcohols, fatty acids, poly fatty acids , alcohol-esters, sugar esters, glycerides (mainly mono- and di-fatty esters), fatty-chain phenol derivatives, but also polyols, such as sugars, alkylpolyglycosides, polyphenols, as well as mixtures of two or more of them, in all proportions. It is very particularly preferred to carry out the process from compounds of formula R-OH chosen from fatty alcohols, fatty acids, poly fatty acids, fatty-chain phenol derivatives, polyphenols, as well as mixtures of two or more. several of them, in all proportions and more preferably among fatty alcohols, fatty acids and fatty-chain phenol derivatives, as well as mixtures of two or more of them, in all proportions.
- octanoic acid or caprylic
- acid nonanoic or pelargonic
- decanoic or capric
- undecanoic or undecylenic
- dodecanoic or lauric
- tetradecanoic or myristic
- hexadecanoic or palmitic
- octadecanoic or stearic
- 9-octadecenoic or oleic
- 9,12 -octadecadienoic or linoleic
- 9,12,15-octadecatrienoic or linolenic
- the alkylene oxide used in the process of the present invention can be of any type well known to those skilled in the art, and is advantageously chosen from ethylene oxide, propylene oxide and oxide of butylene, as well as their mixtures in all proportions, preferably from ethylene oxide and propylene oxide, as well as their mixtures in all proportions, more preferably the alkylene oxide is ethylene oxide or propylene oxide, advantageously the alkylene oxide is ethylene oxide.
- the number "n” of units (Ak-O-) present in the compound of formula (1) is between 10 and 250, preferably between 15 and 200, more preferably between 18 and 160, limits included, as indicated previously. In a very particularly preferred embodiment, the number “n” of units (Ak-O-) present in the compound of formula (1) is between 20 and 150, better still between 20 and 140, typically between 30 and 140. , more specifically between 40 and 130, for example between 50 and 100, or alternatively between 50 and 70, limits included. It must be understood that when several different alkylene oxides make up the (Ak-0-) n chain, they can be arranged in a random manner ("random"), alternately or in blocks, as well as all the combinations. of these various arrangements.
- the nature and the amount of catalyst used for the alkoxylation reaction can also vary widely, depending on the alkoxylation techniques well known to those skilled in the art.
- the catalyst is generally a basic or alkaline catalyst, such as for example sodium hydroxide (NaOH) or potassium hydroxide (KOH). This is referred to as soda or potash catalysis, respectively.
- catalysts can also be used and in particular those now known to those skilled in the art specializing in alkoxylation under the name of “narrow range” catalysts, and are for example chosen from among calcium-based catalysts, based on derivatives containing boron (for example of BF 3 type and derivatives), catalysts of hydrotalcites type, and catalysts of dimetallic cyanide type (“DiMetallic Cyanide” in English, or DMC).
- DMC dimetallic Cyanide
- DMC catalysts are for example described in patents US6429342, US6977236 and PL398518.
- the catalysts known and commercially available include zinc hexacyanocobaltate with one or more ligands, such as Arcol Catalyst ® marketed by the Company or Covestro MOE-DMC catalyst ® marketed by the company Mexeo.
- the amount of catalyst used for the alkoxylation reaction ranges from 1 ppm to 10000 ppm (weight) relative to the amount of compound of formula R-OH, of preferably from 10 ppm to 10,000 ppm (weight).
- the process implements a basic catalysis and the catalyst used is a basic or alkaline catalyst, advantageously sodium hydroxide (NaOH) or potassium hydroxide (KOH ), or alternatively sodium or potassium alcoholates, more advantageously sodium hydroxide or potassium hydroxide, most often potassium hydroxide.
- an acid generally a weak organic acid, for example chosen from acid formic acid, acetic acid and lactic acid, according to conventional techniques and well known to those skilled in the art.
- the treatment with an acid of pK a less than or equal to 3.5 has been shown to be particularly effective on the impurities generated during the preparation of compounds of formula (1), in particular ethoxylated or else ethoxylated and propoxylated.
- the acids of pK a less than or equal to 3.5 which can be used during step b) of the process of the present invention can be of any type known per se, acids organic or mineral, Bronsted acids or Lewis acids. However, it is preferred to use Bronsted acids, proton donor acids, having a pK a less than or equal to 3.5, preferably less than or equal to 3, more preferably less than or equal to 2.5, more preferably less or less. equal to 2, that is to say the strong proton-donating acids, also called labile hydrogen.
- acids very particularly suitable for the process of the present invention mention may be made without limitation of hydrochloric, sulfuric, nitric and phosphoric acids, but also sulfamic acid, para-toluenesulfonic acid, alkane acids -sulphonics, as well as mixtures of two or more of them in all proportions.
- acids whose pK a is greater than 3.5 do not allow satisfactory chemical transformation of the unsaturated ether type impurities generated during the preparation of fatty chain alkoxylates of high molecular weight, in particularly ethoxylation or ethoxylation / propoxylation products of fatty chain and high molecular weight compounds.
- high molecular weight is meant within the meaning of the present a molecular weight, as measured by gel permeation chromatography (GPC) generally between 500 g mol 1 and 20,000 g mol 1 , preferably between 750 g mol 1 and 15,000 g mol 1 , better still between 1000 g mol 1 and 15000 g mol 1 , more particularly between 1000 g mol 1 and 10,000 g mol 1 .
- GPC gel permeation chromatography
- the process of the present invention further comprises a step a2) between step a) and step b), said step a2) co-occurring adding an acid to the crude reaction medium resulting from step a).
- the acid used for step a2) can be any type of acid well known to those skilled in the art, strong or weak, organic or menial, or the acid used in step b) as will be explained. below.
- step b) of optionally neutralized reaction treatment of the process according to the present invention it is preferred to use acids with pK a less than or equal to 3.5 which are perfectly miscible in the reaction medium, that is, that is to say poorly, or even not able, to form a separate phase in the reaction medium.
- the preferred acids of pK a less than or equal to 3.5 are those whose environmental impact is as low as possible.
- alkanesulphonic acid is understood to mean preferably the alkanesulfonic acids of formula R a -S0 3 H, where R a represents a saturated, linear or branched hydrocarbon chain comprising from 1 to 4 carbon atoms.
- the preferred alkanesulphonic acids for use in the context of the present invention are chosen from methanesulphonic acid, ethanesulphonic acid, n-propanesulphonic acid, / so acid -propanesulphonic acid, n-butanesulphonic acid, / so-butanesulphonic acid, sec-butanesulphonic acid, tert-butanesulphonic acid, and mixtures of two or more d 'between them in all proportions.
- the alkanesulphonic acid used in the context of the present invention is methanesulphonic acid or ethanesulphonic acid, most preferably the acid used is methanesulfonic acid.
- the process according to the present invention implements, in step b) of treatment of the reaction medium, at least one alkanesulphonic acid chosen from linear or branched chain alkanesulphonic acids comprising 1 to 4 carbon atoms, and preferably at least methanesulfonic acid, more commonly designated by its acronym AMS.
- at least one alkanesulphonic acid chosen from linear or branched chain alkanesulphonic acids comprising 1 to 4 carbon atoms, and preferably at least methanesulfonic acid, more commonly designated by its acronym AMS.
- Said at least one alkanesulfonic acid which can be used in the process of the present invention can be used as such, or in combination with one or more other components, that is to say in formulation.
- Any type of formulation comprising at least one alkanesulphonic acid may be suitable.
- the formulation comprises from 0.01% to 100% by weight of alkanesulfonic acid, more generally from 0.05% to 90% by weight, in particular from 0.5% to 75% by weight, limits included, of alkanesulfonic acid (s)), relative to the total weight of said formulation. It is for example possible to use formulations comprising from 0.01% to 40% by weight of alkanesulfonic acid, better still from 0.05% to 30% by weight, more specifically from 0.5% to 20% by weight.
- alkanesulphonic acid limits included, of alkanesulphonic acid (s), relative to the total weight of said formulation
- the formulation is for example an aqueous, organic, or even hydro-organic formulation.
- the formulation can be prepared as a concentrated mixture, said concentrated mixture can be diluted by the end user.
- the formulation can also be a ready-to-use formulation, i.e. it does not need to be diluted.
- the formulation can be a pure alkanesulphonic acid, or a mixture of pure alkanesulphonic acids, that is to say that the formulation can contain only one or several sulfonic acids, without any other formulation additive or other solvent or diluent.
- the concentration of alkanesulfonic acid (s) in the formulation can vary widely. Those skilled in the art will know how to adapt, without undue effort, the appropriate concentration of acid in the formulation.
- concentrated solutions for example from 60% to 100%, preferably about 70% to 100% by weight of alkanesulfonic acid (s), relative to the weight total of said formulation, or less concentrated solutions of 0.01% to 60%, preferably from 0.05% to 45%, advantageously from 0.1% to 40% by weight of alkane- acid (s) sulphonic (s), relative to the total weight of said formulation.
- the acid of pK a less than or equal to 3.5 used is methanesulphonic acid (pK a of -1, 9).
- the methanesulfonic acid can advantageously be that marketed in aqueous solution by the company Arkema under the name Scaleva ® , or also under the name Lutropur ® marketed by the company BASF, ready for use or diluted with water in the proportions indicated above.
- the present invention relates to the use of an acid of pK a less than or equal to 3.5, preferably of an alkanesulphonic acid, and more preferably of methanesulphonic acid. , for the treatment of an alkoxylation reaction medium of a fatty chain compound of formula R-OH, where R is as defined above, and more particularly for the treatment of an alkoxylation reaction medium for the preparation of a compound of formula (1) as defined above.
- Step b) of treatment with an acid of pK a less than or equal to 3.5 can be carried out at various temperatures and pressures.
- the treatment temperature is advantageously between room temperature and 130 ° C, and more generally the roof temperature is between 30 ° C and 120 ° C, for example between 40 ° C and 100 ° C.
- the duration of treatment with the acid of pK a less than or equal to 3.5 can also vary widely.
- the duration of contact with said acid is generally short and is generally between a few minutes and a few hours, preferably between 5 minutes and 1 hour, for example approximately 30 minutes.
- the amount of acid required can vary within large proportions but is generally between 4.10 -3 and 0.1 mol per kg of reaction medium, preferably between 5.10 3 and 9.10 2 mol per kg of reaction medium, better still between 6.10 3 and 8.10 2 mol per kg of reaction medium.
- the acid of pK a less than or equal to 3.5 is a proton donor acid and therefore requires the presence of a small amount of water which, if it is not present in the within the reaction medium or provided by the acid formulation, can advantageously be added to the reaction medium, for example during the acid treatment.
- This amount of water, already present or added during the process of the invention can vary widely and is generally between a few ppm by weight and a few% by weight relative to the total weight of the reaction medium treated with the. acid of pK a less than 3.5.
- Step c) of recovering the alkoxylation product consists of treating the neutralized reaction medium as has just been defined above, that is to say the reaction medium resulting from step b) treated with an acid whose pK a is less than or equal to 3.5.
- the treatment of step c) corresponds to the elimination in whole or at least to a very large part, according to conventional techniques well known to those skilled in the art, of the impurities chemically transformed in step b) of the process of 'invention.
- the chemically transformed impurities are easily removed, in whole or at least in very large part, according to conventional techniques well known to those skilled in the art.
- inert gas in particular nitrogen
- water vapor or alternatively by distillation, optionally under reduced pressure
- step c) of recovering the compound of formula R- (Ak-0-) n H does not include the additional addition of water and / or other solvent, nor the separation of solid particles (salts or other residues) formed during the alkoxylation process of invention.
- Step c) of recovery of the compound of formula R- (Ak-0-) n H comprises the elimination in whole or at least in large part, of the compounds resulting from the acid treatment of the reaction crude which included impurities generally resp A nsables bad odors of alkoxylated compounds of high molecular weight, as defined above.
- step c) of recovering the compound of formula (1) comprises, and preferably consists of, removing the products formed during step b ) treatment with an acid of pK a less than or equal to 3.5, by steam stripping.
- This operation is generally carried out at a temperature between 50 ° C and 150 ° C, for example between 70 ° C and 125 ° C, at a pressure generally between 5 kPa and atmospheric pressure (i.e. approximately 100 kPa), preferably between 5 kPa and 50 kPa, for a period generally between a few tens of minutes and a few hours, more generally between one hour and 7 hours.
- Removal operations, other than stripping, of the undesirable products formed during step b) are of course possible, as long as they lead to the desired result, without however adversely affecting the purity and the quality of the alkoxylates synthesized. , and by responding to appropriate economic and environmental constraints.
- the process of the present invention has very many advantages and more particularly in that it makes it possible to achieve in a simple and efficient manner on the industrial level fatty chain alkoxylates of high molecular weight with high degrees of purity. , and in particular making it possible to meet increasingly stringent regulatory specifications, in particular in the fields of cosmetics and human and animal health in general.
- the method of the present invention is moreover simple to implement, economically inexpensive both in terms of operation and also of implementation.
- the process of the present invention is easily adaptable to existing equipment, in that it requires only minor adaptations compared to existing installations, in particular by adding a system making it possible to treat the reaction medium with an acid of pK a less than or equal to three and elimination of impurities including those formed during said acid treatment.
- the process of the present invention does not penalize, or at least to a negligible extent, the overall synthesis process, in terms of productivity.
- the process of the present invention thus makes it possible to achieve fatty chain alkoxylates of high molecular weight, and in particular compounds of formula (1) as defined above, with very low levels of impurities.
- all of the species of unsaturated ether type are transformed into chemical species (in particular aldehydes, hemi-acetals and acetals as indicated above), which are easily eliminated. by virtue of the treatment carried out in step c) of the method according to the present invention.
- the fatty chain alkoxylates of high molecular weight obtained according to the process of the present invention most often have a quantity of impurities originating from the treatment with the acid of pK a of less than 3.5, less than 500 ppm by weight, more generally less than 300 ppm by weight and most often less than 100 ppm by weight.
- the process of the present invention has made it possible to limit the presence of the impurities defined above to a value less than 50 ppm, or even 10 ppm, and even less than 5 ppm.
- the process of the invention thus allows the preparation, on an industrial scale, of compounds of interest which are the fatty-chain high molecular weight alkoxylates, with high degrees of purity. It is thus possible to envisage the use of said high purity alkoxylates as additives, chemical intermediates, surfactants, emulsifiers, demulsifiers, dispersants, detergents, accountants, hydrotropic agents, wetting agents, water control agents.
- Example 1 Industrial Synthesis of Stearic Acid at 120 EO (According to the Invention)
- 287.5 kg (1000 moles) of stearic acid (Radiacid 0417 from the company Oleon) are charged.
- the acid is melted by heating to 80 ° C.
- 2.5 kg of potassium hydroxide (85% KOH, in the form of granules (“prills”)) are then added.
- the reaction medium is dried at 110 ° C. under 40 mm of Hg (ie approximately 5.33 kPa).
- the reaction medium is then brought to 170 ° C.
- Example 1 the procedure is as in Example 1, for the preparation of 500 g of stearic acid at 120 EO, by reaction of stearic acid with ethylene oxide, and the catalyst of the reaction (potassium hydroxide). At the end of the reaction, cooking is carried out, and the catalyst is neutralized, as indicated in Example 1 with formic acid.
- Example 1 A new industrial test is carried out, as in Example 1, using AMS to neutralize the catalyst and to treat impurities of unsaturated ether type.
- AMS stearic acid
- the total amount of methanesulfonic acid used to neutralize the catalyst and treat unsaturated ether-type impurities is 9.25 kg of AMS 70% or 0.175 and 0.115% (6.25 kg) of water%.
- the steam stripping operation at 105-110 ° C, for 5 hours under reduced pressure of 100 mm of mercury (ie 13.33 kPa)
- the final product is drained. Unsaturated ether-type impurity is no longer detected and the final acetaldehyde content measured by NMR is 2 ppm.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2006854A FR3111901B1 (fr) | 2020-06-30 | 2020-06-30 | PROCÉdÉ D’ALCOXYLATION AMÉLIORÉ |
| PCT/FR2021/051189 WO2022003288A1 (fr) | 2020-06-30 | 2021-06-29 | Procédé d'alcoxylation amélioré |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4172237A1 true EP4172237A1 (fr) | 2023-05-03 |
Family
ID=72709570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21746073.2A Pending EP4172237A1 (fr) | 2020-06-30 | 2021-06-29 | Procédé d'alcoxylation amélioré |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20230235119A1 (fr) |
| EP (1) | EP4172237A1 (fr) |
| CN (1) | CN115734978A (fr) |
| BR (1) | BR112022024416A2 (fr) |
| FR (1) | FR3111901B1 (fr) |
| WO (1) | WO2022003288A1 (fr) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8334397B2 (en) * | 2008-01-28 | 2012-12-18 | Nof Corporation | Process for producing polyoxyethylene sorbitan fatty acid ester |
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| JPS5410399A (en) * | 1977-06-24 | 1979-01-25 | Nippon Oil & Fats Co Ltd | Preparation of polyalkylene glycol derivative |
| US5276204A (en) * | 1988-11-09 | 1994-01-04 | Henkel Kommanditgesellschaft Auf Aktien | Fatty alcohol mixtures and ethoxylates thereof showing improved low-temperature behavior |
| US5095061A (en) * | 1990-07-13 | 1992-03-10 | The Dow Chemical Company | Process to reduce propenyl polyethers in hydroxyfunctional polyethers |
| IS4687A (is) * | 1998-03-13 | 1998-04-06 | Shell Internationale Research Maatschappij B.V. | Aðferð við framleiðslu á lyktarlitlum pólýeter pólýólum |
| DE19817676A1 (de) * | 1998-04-21 | 1999-10-28 | Bayer Ag | Verfahren zur aufarbeitungsfreien Herstellung langkettiger Polyetherpolyole |
| CA2378466A1 (fr) | 1999-07-09 | 2001-01-18 | The Dow Chemical Company | Polymerisation de l'oxyde d'ethylene a l'aide de catalyseurs cyanures metalliques |
| US6977236B2 (en) | 2002-06-14 | 2005-12-20 | Shell Oil Company | Preparation of a double metal cyanide catalyst |
| MXPA06007020A (es) * | 2003-12-19 | 2006-08-31 | Procter & Gamble | Compuestos de poliol alcoxilado modificado. |
| CN102498152B (zh) * | 2009-06-18 | 2014-03-12 | 亨茨曼国际有限公司 | 用于中和未中和聚醚多元醇的方法 |
| CN103097335B (zh) * | 2010-09-02 | 2014-08-20 | 科尔布经销有限公司 | 脂肪酸烷基酯的烷氧基化方法 |
| CA2852651C (fr) * | 2011-10-24 | 2019-06-11 | Basf Se | Procede d'extraction de petrole a l'aide de tensioactifs a base d'un melange d'alcoxylates d'hydrocarbures contenant un guerbet en c24, un guerbet en c26, un guerbet en c28 |
| PL398518A1 (pl) | 2012-03-19 | 2013-09-30 | Hreczuch Wieslaw Mexeo | Sklad i sposób otrzymywania katalizatora oksyalkilenowania |
| DE102013216751A1 (de) * | 2013-08-23 | 2015-02-26 | Evonik Industries Ag | Modifizierte Alkoxylierungsprodukte, die Alkoxysilylgruppen aufweisen und Urethangruppen enthalten und deren Verwendung |
| EP3228649B1 (fr) * | 2016-04-04 | 2020-07-15 | Evonik Operations GmbH | Traitement des produits d'alkoxylation obtenus par catalyse alcaline |
| EP3587386B1 (fr) * | 2018-06-22 | 2023-04-19 | L'air Liquide, Société Anonyme Pour L'Étude Et L'exploitation Des Procédés Georges Claude | Procédé de production d'éthoxylates d'alcools gras |
-
2020
- 2020-06-30 FR FR2006854A patent/FR3111901B1/fr active Active
-
2021
- 2021-06-29 WO PCT/FR2021/051189 patent/WO2022003288A1/fr not_active Ceased
- 2021-06-29 US US17/999,657 patent/US20230235119A1/en not_active Abandoned
- 2021-06-29 BR BR112022024416A patent/BR112022024416A2/pt active Search and Examination
- 2021-06-29 CN CN202180045857.3A patent/CN115734978A/zh active Pending
- 2021-06-29 EP EP21746073.2A patent/EP4172237A1/fr active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8334397B2 (en) * | 2008-01-28 | 2012-12-18 | Nof Corporation | Process for producing polyoxyethylene sorbitan fatty acid ester |
Also Published As
| Publication number | Publication date |
|---|---|
| US20230235119A1 (en) | 2023-07-27 |
| FR3111901B1 (fr) | 2023-02-17 |
| CN115734978A (zh) | 2023-03-03 |
| BR112022024416A2 (pt) | 2023-01-17 |
| FR3111901A1 (fr) | 2021-12-31 |
| WO2022003288A1 (fr) | 2022-01-06 |
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