EP2340274A1 - Fabrication continue de copolymères pouvant servir de solvants - Google Patents

Fabrication continue de copolymères pouvant servir de solvants

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Publication number
EP2340274A1
EP2340274A1 EP09783837A EP09783837A EP2340274A1 EP 2340274 A1 EP2340274 A1 EP 2340274A1 EP 09783837 A EP09783837 A EP 09783837A EP 09783837 A EP09783837 A EP 09783837A EP 2340274 A1 EP2340274 A1 EP 2340274A1
Authority
EP
European Patent Office
Prior art keywords
different
represented
reaction surface
same
unbranched
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.)
Withdrawn
Application number
EP09783837A
Other languages
German (de)
English (en)
Inventor
Silke Flakus
Laurent Marc
Zhizhong Cai
Helmut Mack
Burkhard Walther
Jochen Mezger
Simone Klapdohr
Tobias Austermann
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.)
Construction Research and Technology GmbH
Original Assignee
Construction Research and Technology GmbH
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 Construction Research and Technology GmbH filed Critical Construction Research and Technology GmbH
Priority to EP09783837A priority Critical patent/EP2340274A1/fr
Publication of EP2340274A1 publication Critical patent/EP2340274A1/fr
Withdrawn legal-status Critical Current

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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
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B01J19/123—Ultraviolet light
    • 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
    • B01J10/00—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor
    • B01J10/02—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor of the thin-film type
    • 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
    • B01J19/1887—Stationary reactors having moving elements inside forming a thin film
    • 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
    • B01J19/247—Suited for forming thin films
    • 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
    • C08F267/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated polycarboxylic acids or derivatives thereof as defined in group C08F22/00
    • 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
    • C08F267/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated polycarboxylic acids or derivatives thereof as defined in group C08F22/00
    • C08F267/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated polycarboxylic acids or derivatives thereof as defined in group C08F22/00 on to polymers of anhydrides
    • 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
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
    • 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
    • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
    • C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
    • C08F290/06—Polymers provided for in subclass C08G
    • C08F290/062—Polyethers
    • 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
    • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
    • C08F290/08—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated side groups
    • C08F290/14—Polymers provided for in subclass C08G
    • C08F290/142—Polyethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/08—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds

Definitions

  • the present invention relates to a process for the preparation of
  • Acid monomer structural units and copolymers containing polyether macromonomer structural units and also copolymer which can be prepared by this process and the use of the copolymer.
  • aqueous slurries of powdered inorganic or organic substances such as clays, silicate, chalk, carbon black, rock flour and hydraulic binders to improve their processability, d. H. Kneadability, spreadability, sprayability, pumpability or flowability, often added additives in the form of dispersants.
  • Such additives are able to break up solid agglomerates, to disperse the particles formed and thus to improve the processability.
  • This effect is also exploited specifically in the production of building material mixtures containing hydraulic binders such as cement, lime, gypsum, hemihydrate or anhydrite.
  • additives are used which are generally referred to as water reducers or flow agents.
  • water reducers or flow agents in particular copolymers are used in practice, which are prepared by free-radical copolymerization of acid monomers with Polyethermakromonomeren.
  • the copolymerization is usually carried out in the semi-batch mode.
  • WO 2005/075529 describes a semicontinuous preparation process for said copolymers, in which the polyether macromonomer is initially charged and subsequently the acid monomer is added over the time of the template.
  • the method described is already cost-effective and high-performance flow agents are obtained as the process product, there continues to be a desire to further improve the quality of the process product and the economic efficiency of the process.
  • the object underlying the present invention is therefore to provide an economical process for the preparation of copolymers which show good performance as dispersants for hydraulic binders, especially as flow agents / water reducing agents.
  • the solution to this problem is a process for preparing acid monomer structural units and copolymers containing polyether macromonomer structural units, which is carried out in continuous operation in a reactor comprising
  • ⁇ ) a body B rotating about a rotation axis, having a reaction surface, ⁇ ) a dosing system, and Y) a device for irradiating the reaction surface,
  • the components of a starting reaction composition are applied individually and / or as a mixture by means of the dosing system in a thin film to an inner region of the reaction surface of the rotating body B, so that the thin film over the reaction surface of the rotating body B to an outer region of the Reaction surface of the rotating body B flows, wherein the thin film on the reaction surface by means of
  • the thin film leaves the reaction surface as the reaction composition, the acid monomer structural units and
  • an acid monomer, a polyether macromonomer and a photoinitiator are present and the temperature of the reaction surface is 0 to 60 0 C.
  • Acid monomer to be understood as meaning radically copolymerizable monomers having at least one carbon double bond, which contain at least one acid function and in the aqueous medium as the acid react. Furthermore, the acid monomer should also be taken to mean free-radically copolymerizable monomers having at least one carbon double bond which, owing to the hydrolysis reaction, form at least one acid function in the aqueous medium and react as an acid in the aqueous medium (Example: maleic anhydride). Polyethermakromonomere in the sense of the present
  • the invention relates to free-radically copolymerizable compounds having at least one carbon double bond, which have at least two ether oxygen atoms, with the proviso that the polyether macromonomer structural units contained in the copolymer have side chains containing at least two ether oxygen atoms.
  • the reactor in which the method according to the invention is carried out makes it possible to carry out a process in which, due to the formation of a very thin film on the pane, a particularly efficient and uniform irradiation by the UV light is made possible.
  • particularly good mixing ratios within the film lead to intensive contact of the active species.
  • Short and controllable residence times allow control over the molecular weight even at high viscosities, which has a positive effect on product properties.
  • positive properties, such as a short residence time, intensive mixing and high mass transfer also lead to economic benefits.
  • the method according to the invention offers the possibility of a flexible and simple process optimization.
  • the scale-up which is often problematic in process engineering, is particularly simple due to the simplicity and usually relatively small size of the reactor used, and it should be mentioned that the investment costs as well as the maintenance costs (purification, etc.) of said reactor are quite low
  • the quality of the resulting product ie the copolymer-containing reaction composition, can be varied in a targeted manner by changing the process parameters (residence time, temperature, metering of the components of the starting reaction composition).
  • the rotating body B is formed as a turntable having the reaction surface at the top, in which the components of the Ninre forceskomposition be applied individually and / or as a mixture with the aid of the dosing system in the middle region as a thin film and preferably a wall surrounding the turntable before, with the the the
  • Reaction composition is collected after leaving the reaction surface.
  • a reaction surface having body B is generally in front of a horizontal or a slightly different from the horizontal (at an angle of up to about 30 °) before rotating disk.
  • this body B may also be vase-shaped, ring-shaped or conical.
  • the body B has a diameter of 0.10 m to 3.0 m, preferably 0.20 m to 2.0 m and more preferably from 0.20 m to 1, 0 m.
  • the reaction surface can be smooth or have alternatively riffel- or spiral-shaped projections, which exert influence on residence time of the reaction mixture.
  • the body B is installed in a respect to the conditions of the method resistant container.
  • the temperature of the reaction surface is between 5 and 45 ° C., preferably between 10 and 30 ° C.
  • the temperature of the reaction surface is an important parameter, which is coordinated by the person skilled in the art with other relevant influencing variables, such as residence time, type and amount of the components of the starting reaction mixture should.
  • photoinitiators are suitable, for example:
  • Irgacure® 369 2-Benzyl-2-dimethylamino-1- [4- (4-morpholinyl) phenyl] -1-butanone
  • Irgacure® 651 alpha, alpha-dimethoxy-alpha-phenylacetophenone
  • Irgacure® 2022 phosphine oxide, phenylbis (2,4,6-trimethylbenzoyl) (20%) and 2-
  • Irgacure® 2100 phosphine oxide
  • Irgacure® 819 DW Phosphine Oxide Phenyl bis (2,4,6-trimethylbenzoyl) (45% FS dispersed in water)
  • Irgacure® 2959 1- (4- (2-hydroxyethoxy) -phenyl) -2-hydroxy-2-methyl-1-propan-1-one
  • Esacure KIP EM oligo [2-hydroxy-2-methyl-1-4- (1-methylvinyl) phenyl] propanone], emulsion in water based on 32% active photoinitiator Esacure DP 250: 2,4,6-trimethylbenzoyldiphenylphosphine oxide + alpha - Hydroxy ketone + benzophenone derivative
  • 0.1 to 0.0005, preferably 0.01 to 0.1 mol, of photoinitiator is used per mole of acid monomer.
  • solvents are also used as components of the starting reaction composition.
  • the use of water as a solvent is particularly useful.
  • the device for irradiating the reaction surface is present as a UV lamp, with which the thin film on the reaction surface is irradiated with light in a wavelength range of 10 to 700 nm, preferably 280 to 400 nm electromagnetically.
  • the process parameters set are a layer thickness of the thin film applied by the metering system of 10 ⁇ m to 1.0 mm, preferably 100 to 200 ⁇ m, and a mean residence time of the components of the starting reaction composition on the reaction surface of 0.1 to 20 seconds, preferably from 1 to 10 seconds.
  • the rotational speed of the body B as well as the dosage rate of the components of the starting reaction mixture are variable.
  • the rotational speed in revolutions per minute is 1 to 20,000, preferably 100 to 5000 and particularly preferably 500 to 2000.
  • Reaction mixture which is per unit area of the reaction surface on the rotating body B, is typically 0.1 to 10 mL / dm 2 , preferably 1, 0 to 5.0 mL / dm 2 .
  • the average residence time (frequency means of the residence time spectrum) of the reaction mixture is, inter alia, on the size of the reaction surface, on the type and amount of the components of
  • Starting reaction mixture of the reaction surface and the rotational speed of the rotating body B dependent and is normally 0.01 to 100 s, preferably 0.1 to 10 s, more preferably 1 to 10 s and is thus considered to be extremely short. This ensures that the level of undesirable side reactions is greatly reduced and products of consistent quality are produced. In particular, the molecular weight can be well controlled even in the case of high viscosities.
  • the dosing system employed in a preferred embodiment allows the components of the starting reaction composition to be added at any position on the reaction surface. A portion or all of the components of the starting reaction composition may be premixed and then applied to the reaction surface by the dosing system. Not infrequently, however, the acid monomer and the polyether macromonomer are separated, i. E. not premixed with each other, applied to the reaction surface.
  • the reaction surface may extend to further rotating bodies so that the reaction composition, before leaving the reaction surface of the rotating body B, reaches the reaction surface of at least one further rotating body having the reaction surface.
  • the other rotating bodies are suitably designed according to the body B.
  • body B practically feeds the other bodies with the reaction mixture, ie, the thin film flows from the body B to at least one other body, leaves this at least one other body, and then be collected as a reaction product.
  • R 1 is identical or different and represented by H and / or an unbranched or branched C 1 -C 4 -alkyl group
  • R 2 is the same or different and represents C 6 H 4 -SO 3 H substituted by OH, SO 3 H, PO 3 H 2, O-PO 3 H 2 and / or para, with the proviso that if X is a non-existent moiety, R 2 is represented by OH;
  • R 4 is the same or different and represents C 6 H 4 -SO 3 H substituted by SO 3 H, PO 3 H 2, O-PO 3 H 2 and / or para;
  • R 5 is identical or different and is represented by H and / or an unbranched or branched C 1 -C 4 -alkyl group
  • Z is identical or different and represented by O and / or NH;
  • R 6 is identical or different and is represented by H and / or an unbranched or branched C 1 -C 4 -alkyl group
  • Q is the same or different and represented by NH and / or O;
  • the acid monomer used is methacrylic acid, acrylic acid, maleic acid, maleic anhydride, a half ester of maleic acid or a mixture of several of these components.
  • the acid monomer used may also be an ester compound which can be converted (in particular as a structural unit incorporated in the copolymer) by alkaline saponification (for example in the alkaline medium of the concrete) to the corresponding acid compound.
  • the acid monomer not only such an alkaline saponifiable ester compound is used, but typically the ester compound together with an acid monomer having free acid functions (e.g., acrylic acid).
  • polyether macromonomer structural unit derived from the reaction of the polyether macromonomer of the copolymer according to one of the general formulas (IIa), (IIb) and / or (Nc)
  • R 10 , R 11 and R 12 are each the same or different and are independently represented by H and / or an unbranched or branched C 1 -C 4 -alkyl group;
  • E is identical or different and represents C ⁇ H 4 and / or a non-existing unit substituted by an unbranched or branched C 1 -C 6 -alkylene group, a cyclohexyl group, CH 2 -CeHiO, ortho, meta or para;
  • G is the same or different and is represented by O, NH and / or CO-NH with the proviso that if E is a non-existent unit, G is also present as a non-existing unit;
  • n is the same or different and represented by 0, 1, 2, 3, 4 and / or 5;
  • a is the same or different and represented by an integer from 2 to 350 (preferably 10-200);
  • R 13 is identical or different and represents H, an unbranched or branched C 1 -C -alkyl group, CO-NH 2, and / or COCH 3;
  • R 14 is identical or different and is represented by H and / or an unbranched or branched C 1 -C -alkyl group;
  • E is the same or different and is represented by an unbranched or branched C 1 -C 6 -alkylene group, a cyclohexyl group, C 2 -C 6 H 10, ortho, meta or para substituted C6H4 and / or by a non-existent moiety;
  • G is the same or different and represented by a non-existent moiety, O, NH and / or CO-NH with the proviso that if E is a non-existent moiety then G is also present as a non-existent moiety;
  • n is the same or different and represented by 0, 1, 2, 3, 4 and / or 5
  • a is the same or different and represented by an integer from 2 to 350;
  • R 15 are identical or different and are represented by H, a straight or branched Ci - C 4 alkyl group, CO-NH2, and / or COCH3;
  • R 16 , R 17 and R 18 are each the same or different and are independently represented by H and / or an unbranched or branched C 1 -C 4 -alkyl group;
  • E is identical or different and represents CeH 4 substituted by an unbranched or branched C 1 -C 6 -alkylene group, a cyclohexyl group, C 2 -C 6 H 10, ortho, meta or para and / or by a non-existing unit;
  • n is the same or different and represented by 0, 1, 2, 3, 4 and / or 5;
  • a is the same or different and represented by an integer from 2 to
  • d is the same or different and represented by an integer from 1 to 350;
  • R 19 is identical or different and represented by H and / or an unbranched or branched C 1 -C 4 -alkyl group
  • R 20 is identical or different and is represented by H and / or an unbranched C 1 -C 4 -alkyl group.
  • the polyether macromonomer used is vinylated methyl polyethylene glycol, alkoxylated isoprenol and / or alkoxylated hydroxybutyl vinyl ether and / or alkoxylated (meth) allyl alcohol, preferably each having an arithmetic average number of oxyalkylene groups of 4 to 340.
  • the starting reaction composition there may be a vinyl unsaturated compound which is reacted by polymerization to thereby produce a structural unit in the copolymer represented by the general formulas (IIIa) and / or (NIb)
  • R 21 is identical or different and is represented by H and / or an unbranched or branched C 1 -C 4 group;
  • W is the same or different and represented by O and / or NH;
  • R 22 is identical or different and represented by a branched or unbranched C 1 -C 8 monohydroxyalkyl group
  • R 23 , R 24 and R 25 are each the same or different and each independently represented by H and / or an unbranched or branched C 1 - C 1 alkyl group;
  • n is the same or different and represented by 0, 1, 2, 3 and / or 4;
  • R 26 is identical or different and represented by (C ⁇ Hs), OH and / or -COCH 3 .
  • Most components of the starting reaction composition used are as much polyether macromonomer per mole of acid monomer that an arithmetic average molar ratio of acid monomer structural units to polyether macromonomer structural units of from 20: 1 to 1: 1, preferably from 12: 1 to 1: 1, is established in the copolymer formed.
  • At least 45 mole percent, but preferably at least 80 mole percent, of all the structural units of the copolymer are present as acid monomer structural units and polyether macromonomer structural units.
  • a chain regulator which is preferably in dissolved form, may be present as a further component of the starting reaction composition.
  • the monomeric starting materials and / or the initiator may be presented in the form of their aqueous solutions as components of the Ninre syndrome.
  • the invention further relates to a copolymer which can be prepared according to the method described above.
  • the present invention relates to the use of this copolymer as a dispersant for hydraulic binders.
  • a reactor cascade consisting of three reactors of the reactor type Protensive Limited. The diameter of the respective disc was 20 cm.
  • a monomer solution consisting of 57.5% macromonomer (prepared by ethoxylation of 4-hydroxybutyl vinyl ether with 22 moles of EO), 6.4% acrylic acid (99.5%), 1.6% KOH (40%), 0.1% 3-mercaptopropionic acid, 33.9 % Water and 0.5% initiator (Irgarcure 500, Ciba - chemical: mixture of 1-hydroxy-cyclohexyl-phenyl ketone and
  • Benzophenone in the molar ratio of 1: 1) prepared in a reservoir and metered through the housing opening in the middle of the disc of the first reactor.
  • the flow rate was 1 ml / s and the rotational speed 800 revolutions / min.
  • the thin film forming on the rotating disk was irradiated with UV light (wavelength between 280 and 400 nm).
  • the reaction solution leaving the first reactor was then sequentially metered onto the reaction surfaces of the second and third reactors of the cascade, on each of which the process described on the first disk was repeated with the same parameters.
  • the temperature of the reaction surface was about 22 ° C. After leaving the disk of the third reactor, the reaction mixture was collected and then analyzed.
  • the aqueous solution of a copolymer having an average molecular weight of Mw 39700 g / mol and a polydispersity of 1.80 was obtained.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Macromonomer-Based Addition Polymer (AREA)

Abstract

L'invention concerne un procédé de fabrication de copolymères contenant des unités structurelles monomères acides et des unités structurelles macromonomères polyéther, réalisé en continu dans un réacteur. Le réacteur comporte a) un corps B tournant autour d'un axe de rotation, présentant une surface de réaction, ß) un système de dosage et ?) un dispositif d'irradiation de la surface de réaction. i) les composants d'une composition de réaction de départ sont appliqués individuellement et/ou en tant que mélange à l'aide du système de dosage, sous forme de film mince, sur une zone intérieure de la surface de réaction du corps rotatif B de telle manière que le film mince s'écoule sur la surface de réaction du corps rotatif B vers une zone extérieure de la surface de réaction du corps rotatif B, le film mince étant irradié électromagnétiquement sur la surface de réaction au moyen du dispositif d'irradiation de la surface de réaction; ii) le film mince quitte la surface de réaction en tant que composition de réaction renfermant un copolymère contenant des unités structurelles monomères acides et des unités structurelles macromonomères polyéther; et iii) la composition de réaction est recueillie après avoir quitté la surface de réaction, les composants de la composition de réaction de départ présents étant un monomère acide, un macromonomère polyéther et un photoinitiateur.
EP09783837A 2008-10-10 2009-10-08 Fabrication continue de copolymères pouvant servir de solvants Withdrawn EP2340274A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09783837A EP2340274A1 (fr) 2008-10-10 2009-10-08 Fabrication continue de copolymères pouvant servir de solvants

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08166298 2008-10-10
EP09783837A EP2340274A1 (fr) 2008-10-10 2009-10-08 Fabrication continue de copolymères pouvant servir de solvants
PCT/EP2009/063070 WO2010040794A1 (fr) 2008-10-10 2009-10-08 Fabrication continue de copolymères pouvant servir de solvants

Publications (1)

Publication Number Publication Date
EP2340274A1 true EP2340274A1 (fr) 2011-07-06

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EP09783837A Withdrawn EP2340274A1 (fr) 2008-10-10 2009-10-08 Fabrication continue de copolymères pouvant servir de solvants

Country Status (3)

Country Link
US (1) US20110306696A1 (fr)
EP (1) EP2340274A1 (fr)
WO (1) WO2010040794A1 (fr)

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WO2010015452A1 (fr) * 2008-08-08 2010-02-11 Construction Research & Technology Gmbh Production de polyurées et/ou de polyuréthanes silylés
EP2742995A1 (fr) 2012-12-11 2014-06-18 Construction Research & Technology GmbH Procédé continu de fabrication de copolymères
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CN113929836B (zh) * 2021-11-01 2024-03-26 湖北凌安科技有限公司 高分散降粘型减水剂及其制备方法

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