EP3440137A1 - Water-soluble copolymer and use thereof as dispersant for suspension of particles - Google Patents
Water-soluble copolymer and use thereof as dispersant for suspension of particlesInfo
- Publication number
- EP3440137A1 EP3440137A1 EP17720182.9A EP17720182A EP3440137A1 EP 3440137 A1 EP3440137 A1 EP 3440137A1 EP 17720182 A EP17720182 A EP 17720182A EP 3440137 A1 EP3440137 A1 EP 3440137A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compound
- acid
- mixtures
- copolymer according
- copolymer
- 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.)
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Classifications
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/45—Anti-settling agents
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- 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
- C08F220/10—Esters
- C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
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- 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
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/285—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing a polyether chain in the alcohol moiety
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- 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
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/285—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing a polyether chain in the alcohol moiety
- C08F220/286—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing a polyether chain in the alcohol moiety and containing polyethylene oxide in the alcohol moiety, e.g. methoxy polyethylene glycol (meth)acrylate
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or 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 of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/02—Emulsion paints including aerosols
- C09D5/024—Emulsion paints including aerosols characterised by the additives
- C09D5/027—Dispersing agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/02—Emulsion paints including aerosols
- C09D5/024—Emulsion paints including aerosols characterised by the additives
- C09D5/028—Pigments; Filters
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/08—Homopolymers or copolymers of acrylic acid esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
Definitions
- the invention relates to the field of the preparation of aqueous dispersions of organic, organometallic or mineral particles.
- the invention relates to the preparation of aqueous suspensions comprising organic, organometallic or mineral particles and at least one particular copolymer obtained by polymerization of at least one acid and at least one compound or at least one ester derivatives of a particular acid, in the presence of water, at least one initiator compound and at least one activator compound, followed by the total or partial neutralization using at least one compound selected from hydroxides of alkali metal, alkaline earth metal hydroxides, alkaline earth metal dihydroxides and mixtures thereof.
- the invention relates to such a particular copolymer having low polydispersity indices (I p ) and molecular weight in weight (Mw), its preparation process and its use, especially for the preparation of an aqueous paint composition.
- Water-soluble copolymers useful as a dispersing agent in the preparation of particle suspensions are known.
- dispersants are known for the preparation of glossy paint compositions comprising dispersed titanium dioxide particles.
- the dispersing agents of the state of the art are prepared by processes comprising a neutralization step using ammonia thus improving the dispersing properties of the copolymer obtained.
- the choice of this particular neutralizing agent can also influence the optical properties of the subsequent paint coating. It can also influence the mechanical properties of this coating.
- US 3859260 discloses a redox radical polymerization reaction which employs an initiator compound and a substantial amount of bisulfite as a reducing agent.
- the polymer is neutralized with potash or with ammonia.
- US 4102843 discloses an aqueous emulsion paint composition
- a copolymer of alkyl acrylate and acrylic acid as a dispersing agent. This copolymer is obtained by polymerization in isopropanol and an initiator compound and is then neutralized with sodium hydroxide.
- VOCs volatile organic compounds
- the dispersing agents must also make it possible to avoid or reduce the presence of volatile organic compounds.
- such dispersing agents should not lead to the release of ammonia.
- dispersing agents used in the preparation of suspensions of particles must make it possible to maintain or improve the resistance to abrasion or to improve the resistance wet abrasion.
- Pigment compatibility and blocking resistance that is the adhesion resistance of two coated coating layers, are also desirable properties of the prepared coatings. For these coatings, it is also desired to improve the resistance to the tasks.
- Particle dispersants must also have satisfactory or improved intrinsic properties, especially low viscosity. They must also be widely compatible with different types of particles or with different types of materials or additives. They must therefore be very versatile.
- copolymers useful as dispersants must be capable of being prepared in high concentrations and which are commercially interesting, in particular in concentrations greater than 35% by weight of neutralized copolymer of the solution.
- the invention makes it possible to provide a solution to all or part of the problems encountered with the dispersing agents of the state of the art.
- the invention provides a copolymer obtained by a process comprising:
- At least one polymerization reaction At least one polymerization reaction:
- At least one initiator compound selected from hydrogen peroxide, sodium persulfate, potassium persulfate, ammonium persulfate and mixtures thereof and at least one activator compound selected from the group consisting of alkali metal hypophosphites, especially sodium hypophosphite, potassium hypophosphite, and mixtures thereof, and preferably in the absence of sodium thiosulfate;
- MgO, CaO alkali metal hydroxides, alkaline earth metal hydroxides, alkaline earth metal dihydroxides and mixtures thereof.
- the invention provides a copolymer whose intrinsic characteristics can be controlled.
- the copolymer obtained has a weight-average molecular mass (M w ) ranging from 1000 to 6000 g / mol, preferably from 1500 to 4000 g / mol.
- the copolymer obtained has a polydispersity index (I p) ranging from 1.5 to 3, preferably 1.8 to 2.3.
- the neutralization is carried out after the polymerization reaction.
- the invention therefore also provides an alkali metal salt or an alkaline earth metal salt of a copolymer obtained according to the invention or a mixture of such a salt and a copolymer obtained according to the invention.
- the polymerization reaction uses an acid (a) chosen from acrylic acid, methacrylic acid and mixtures thereof. Acrylic acid is preferred.
- the polymerization reaction may employ at least one other acid (a).
- the polymerization reaction also implements another acid (a) selected from acrylic acid, methacrylic acid, itaconic acid, maleic acid.
- the polymerization reaction can use acrylic acid with itaconic acid or with maleic acid or methacrylic acid with itaconic acid or with maleic acid.
- the polymerization reaction uses from 10 to 90, preferably from 30 to 60, by weight of compound (a) relative to the total amount by weight of compounds (a) and ( b).
- the polymerization reaction uses at least one compound (b) which is a compound of formula (A):
- X identical or different, independently represents a linear or branched C1-C10-alkylene group
- n represents an integer or decimal number ranging from 1 to 5;
- Q represents a group chosen from C (O), CH 2 , CH 2 -O and (CH 2 ) 4 -O;
- L represents a direct bond or a CH 2 group
- R 1 represents H, CH 3 or C (O) OH
- R 2 represents H or C (O) OH.
- the polymerization reaction uses at least one compound (b) of formulas (I), (II), III) or (IV):
- X identical or different, independently represents a linear or branched C1-C10-alkylene group
- n represents an integer or decimal number ranging from 1 to 5;
- L represents a direct bond or a CH 2 group
- R 1 represents H, CH 3 or C (O) OH
- R 2 represents H or C (O) OH.
- the compound (b) is a compound of the formulas (A), (I), (II), (III) or (IV) in which X, identical or different, independently represents a C 2 -C 4 group linear or branched alkylene, in particular an ethylene group, a propylene group or a butylene group.
- the compound (b) is a compound of the formulas (A), (I), (II), (III) or (IV) in which:
- L represents a CH 2 group
- R 1 represents C (O) OH
- R 2 represents H.
- the compound (b) is a compound of the formulas (A), (I), (II), (III) or (IV) wherein n represents 1 and: • L represents a direct bond, R 1 represents H and R 2 represents H; or
- L represents a CH 2 group
- R 1 represents C (O) OH
- R 2 represents H
- n represents a compound of formulas (A), (I), (II), (III) or (IV) in which n represents
- L represents a direct bond CH 2 , R 1 represents CH 3 and R 2 represents H.
- the polymerization reaction uses a compound (b) chosen from hydroxyethyleneoxy acrylate, hydroxypropyleneoxy acrylate, hydroxyethyleneoxy methacrylate, hydroxypropyleneoxy methacrylate. Hydroxypropyleneoxy acrylate or 2-hydroxypropyl acrylate (CAS 999-61-1) is preferred.
- the polymerization reaction uses from 10 to 90, preferably from 40 to 70, by weight of compound (b) relative to the total amount by weight of compounds (a) and ( b).
- the polymerization reaction is carried out in the presence of water, at least one initiator compound and at least one activator compound.
- the preferred initiator compound is hydrogen peroxide (H 2 O 2 ) which may be combined with metal salts, especially iron salts, brass salts or mixtures thereof.
- the preferred activator compound is sodium hypophosphite (NaPO 2 H 2 ).
- the polymerization reaction uses from 5 to 15% by weight, preferably from 7 to
- alkali metal hypophosphites based on the total amount by weight of monomers.
- the total or partial neutralization is carried out using at least one compound chosen from NaOH, KOH, MgO, CaO, Mg (OH) 2 , Ca (OH) 2 and mixtures thereof.
- the partial neutralization is carried out using NaOH, KOH, MgO, CaO, Mg (OH) 2 , Ca (OH) 2 and mixtures thereof and the total neutralization is carried out using NaOH, KOH and mixtures thereof.
- the total or partial neutralization is carried out by means of potash or soda and in particular by means of potassium hydroxide.
- the initiator compound may be chosen from hydrogen peroxide, sodium persulfate, potassium persulfate, ammonium persulfate and mixtures thereof and the neutralization may be carried out using potassium hydroxide.
- the invention also relates to a process for the preparation of this copolymer.
- the method according to the invention comprises:
- At least one initiator compound selected from hydrogen peroxide, sodium persulfate, potassium persulfate, ammonium persulfate and mixtures thereof and at least one activator compound selected from the group consisting of alkali metal hypophosphites, especially sodium hypophosphite, potassium hypophosphite, and mixtures thereof, and preferably in the absence of sodium thio sulfate;
- the polymerization reaction can be repeated.
- the neutralization is then carried out after the polymerization reaction.
- the invention therefore also provides a process for the preparation of an alkali metal salt or an alkaline earth metal salt of a copolymer obtained by the process of the invention or a mixture of such a salt and a copolymer obtained according to the process of the invention.
- a preferred process according to the invention uses an acid (a) chosen from acrylic acid, methacrylic acid and mixtures thereof.
- Acrylic acid is preferred.
- the polymerization reaction can at least one other acid (a).
- the polymerization reaction then also implements another acid (a) selected from acrylic acid, methacrylic acid, itaconic acid and maleic acid.
- the polymerization reaction can use acrylic acid with itaconic acid or with maleic acid or methacrylic acid with itaconic acid or with maleic acid.
- a method also preferred according to the invention uses from 10 to 90, preferably from 30 to 60, by weight of compound (a) relative to the total amount by weight of compounds
- a preferred process according to the invention uses at least one compound (b) which is a compound of formula (A):
- X identical or different, independently represents a linear or branched C1-C10-alkylene group
- n represents an integer or decimal number ranging from 1 to 5;
- Q represents a group chosen from C (O), CH 2 , CH 2 -O and (CH 2 ) 4 -O;
- L represents a direct bond or a CH 2 group
- R 1 represents H, CH 3 or C (O) OH
- R 2 represents H or C (O) OH.
- a method also preferred according to the invention implements at least one compound (b) which is a compound of formulas (I), (II) or (III:
- X identical or different, independently represents a linear or branched C1-C10-alkylene group
- n represents an integer or decimal number ranging from 1 to 5;
- L represents a direct bond or a CH 2 group
- R 1 represents H, CH 3 or C (O) OH
- R 2 represents H or C (O) OH.
- the compound (b) is a compound of formulas (A), (I), (II), (III) or (IV) in which X, identical or different, represents independently a linear or branched C 2 -C 4 -alkylene group, in particular an ethylene group, a propylene group or a butylene group. Even more preferably, the compound (b) is a compound of the formulas (A), (I), (II), (III) or (IV) in which:
- L represents a CH 2 group
- R 1 represents C (O) OH
- R 2 represents H.
- the compound (b) is a compound of the formulas (A), (I), (II), (III) or (IV) wherein n represents 1 and:
- L represents a CH 2 group
- R 1 represents C (O) OH
- R 2 represents H
- n represents 1 and:
- the polymerization reaction uses a compound (b) chosen from hydroxyethyleneoxy acrylate, hydroxypropyleneoxy acrylate, hydroxyethyleneoxy methacrylate and hydroxypropyleneoxy methacrylate. Hydroxypropyleneoxy acrylate is preferred.
- a method also preferred according to the invention uses from 10 to 90, preferably from 40 to 70, by weight of compound (b) relative to the total amount by weight of compounds (a) and (b).
- the polymerization reaction is carried out in the presence of water, at least one initiator compound and at least one activator compound.
- the preferred initiator compound is hydrogen peroxide (H2O2) which may be combined with metal salts, especially iron salts, copper salts or mixtures thereof.
- the preferred activator compound is sodium hypophosphite (NaPO 2 H 2 ).
- the polymerization reaction uses from 5 to 15% by weight, preferably from 7 to 11% by weight, of alkali metal hypophosphites relative to the total amount by weight of monomers.
- the invention also relates to the use of this copolymer.
- the invention relates to the use of at least one copolymer according to the invention for the preparation of an aqueous dispersion, in particular for the preparation of an aqueous dispersion of organic, organometallic or mineral particles.
- the invention therefore provides a particular aqueous dispersion comprising at least one copolymer according to the invention and organic, organometallic or mineral particles dispersed in an aqueous medium, preferably dispersed in water.
- the particles used according to the invention are particles of at least one pigment.
- the particles used according to the invention are mineral particles. In a particularly preferred manner, these are TiO 2 particles.
- the invention preferably provides an aqueous suspension (or slurry) comprising organic, organometallic or mineral particles and at least one copolymer according to the invention in an aqueous support, preferably in water. .
- copolymer according to the invention, the aqueous dispersion according to the invention or the aqueous suspension according to the invention can be used for the preparation of numerous compositions.
- the copolymer according to the invention, the aqueous dispersion according to the invention or the aqueous suspension according to the invention are used for the preparation of an aqueous adhesive composition or an aqueous coating composition, in particular a Thick film coating or thin film coating.
- the aqueous coating composition is an aqueous varnish composition or an aqueous paint composition, for example decorative paint or industrial paint.
- the invention also provides an aqueous paint composition
- an aqueous paint composition comprising, in an aqueous carrier, preferably in water,
- At least one film-forming copolymer latex At least one film-forming copolymer latex
- At least one organic or inorganic pigment At least one organic or inorganic pigment
- At least one copolymer according to the invention At least one copolymer according to the invention.
- the assembly is then heated to 95 ° C. ⁇ 2 ° C. and then, with the aid of three peristatic pumps, the following reactants are added continuously for two hours at 95 ° C.
- the monomers and the reducing compound are added for 3 h 30 min, the initiator compound is added for 3 h 35 min. After rinsing the pumps, the assembly is then baked for 60 min at 73 ° C. A polymer is obtained which is then analyzed:
- the molecular weight of the copolymers is determined by size exclusion chromatography (CES) or in English "Gel Permeation Chromatography” (GPC).
- This technique uses a Waters liquid chromatography apparatus equipped with a detector. This detector is a Waters refractometric concentration detector.
- This liquid chromatography apparatus is provided with a steric exclusion column in order to separate the different molecular weights of the copolymers studied.
- the liquid elution phase is an aqueous phase adjusted to pH 9.00 using 1N sodium hydroxide containing 0.05M NaHCO 3, 0.1M NaNO 3, 0.02M trietanolamine and 0.03% NaN 3 .
- the copolymer solution is diluted to 0.9% dry in the solubilization solvent of the CES, which corresponds to the liquid phase of elution of the CES, to which 0.04% of dimethylformamide which is added is added. the role of flow marker or internal standard. Then, it is filtered at 0.2 ⁇ . 100 ⁇ ⁇ are then injected into the chromatograph (eluent: an aqueous phase adjusted to pH 9.00 by N sodium hydroxide containing 0.05 M NaHC0, NaN0 0.1M, 0.02M triétanolamine and 0, 03% NaN 3 ).
- the liquid chromatography apparatus contains an isocratic pump (Waters 515) with a flow rate of 0.8 mL / min.
- the chromatography apparatus also comprises an oven which itself comprises in series the following column system: a precolumn of the Guard Column Ultrahydrogel Waters type, 6 cm long and 40 mm inside diameter, and a linear column of the Ultrahydrogel Waters type. 30 cm long and 7.8 mm inside diameter.
- the detection system consists of a type RI Waters 410 refractometric detector. The oven is heated to a temperature of 60 ° C and the refractometer is heated to a temperature of 45 ° C.
- the chromatography apparatus is calibrated using powdered polyacrylate standards of various molecular weights certified by the supplier: Polymer Standard Service or American Polymers Standards Corporation.
- Table 1 shows the characteristics of the copolymers prepared.
- the polymerization according to the invention which uses a sodium hypophosphite-type initiator compound, makes it possible to obtain copolymers which are useful as acrylic dispersants, with high and commercially interesting concentrations (> 35% or even 40% or else to 43% for example) and with alkaline cations from the neutralization. It is not possible to obtain such results when the reducing initiator compound is sodium bisulfite, unless ammonia is used in the neutralization of the copolymer, thus causing the release of volatile organic compounds. when using these polymers.
- Example 5 Use of copolymers for the preparation of paint compositions and evaluation of the properties of the paint:
- the dispersant properties of the copolymers used were evaluated by producing deflocculation curves for different grades of T1O2 particles. The effectiveness of the dispersing agent during the suspension in water of titanium dioxide at a particular concentration is thus demonstrated.
- An aqueous suspension of TiO 2 is prepared by introducing 190 g of water into a beaker and then adding 612 g of ruthenium Ti0 2 (Kronos 2310, Tronox CR 828 and Du Pont TI-PURE R 902) and slowly mixing with water. a mechanical mixer until complete homogenization. A thick paste is formed, the solids content of which is verified by means of a dry scale. The solids content should be 76.5 ⁇ 0.5%.
- the initial Brookfield viscosity (ASTM D 2196) of the thick slurry was measured at 100 rpm. Then, a first amount of dispersing agent is added and mixed for 5 minutes to obtain a dispersion of the TiO 2 particles.
- the Brookfield viscosity (ASTM D 2196) of the thick paste comprising the dispersing agent is measured at 100 rpm. The steps of addition of slightly increasing amounts of dispersing agent, mixing and measuring the viscosity are repeated until a stabilized or very slightly varying value of viscosity is obtained.
- the results for the different Ti0 2 rutiles Kronos 2310, Tronox CR 828 and Du Pont TI-PURE R 902 are shown in Tables 4, 5 and 6.
- dispersant 100 rpm (mPa.s) dispersant copolymer 1-1 1.5 0.092 not measurable
- the various copolymers allow a good dispersion of the TiO 2 particles of different grades.
- the optical properties of the three paint formulations were also evaluated by measuring their gloss at 20 °, 60 ° and 85 ° using a BYK GARDNER Micro-Tri-Gloss Reflectometer (ASTM D 3928) and their opacifying properties. (ASTM D 2805). The measurements were carried out 24 hours after application of the paint.
- the brightness index or whiteness index of the paint film is measured by measuring the L * component in the Lab color space (L * a * b *), using a spectrophotometer (ASTM D). 2244).
- the neutralized copolymers according to the invention allow good dispersion performance of the TiO 2 particles as well as very good optical properties and excellent wet abrasion resistance properties for the aqueous formulations of prepared paints.
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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)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201662318907P | 2016-04-06 | 2016-04-06 | |
FR1653718A FR3050733B1 (en) | 2016-04-27 | 2016-04-27 | WATER-SOLUBLE COPOLYMER OF AN ACID AND AN ESTER AND ITS USE AS A DISPERSANT FOR SUSPENSION OF PARTICLES |
PCT/FR2017/050718 WO2017174899A1 (en) | 2016-04-06 | 2017-03-29 | Water-soluble copolymer and use thereof as dispersant for suspension of particles |
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EP3440137A1 true EP3440137A1 (en) | 2019-02-13 |
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EP17720182.9A Pending EP3440137A1 (en) | 2016-04-06 | 2017-03-29 | Water-soluble copolymer and use thereof as dispersant for suspension of particles |
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US (1) | US11447588B2 (en) |
EP (1) | EP3440137A1 (en) |
CN (1) | CN108884337A (en) |
CA (1) | CA3018451A1 (en) |
FR (1) | FR3050733B1 (en) |
MX (1) | MX2018011389A (en) |
WO (1) | WO2017174899A1 (en) |
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WO2022165697A1 (en) * | 2021-02-04 | 2022-08-11 | Dic Corporation | Water dispersion for metallic coating material and aqueous metallic coating material |
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US3859260A (en) | 1967-10-12 | 1975-01-07 | Leland E Dannals | Oligomers |
US4029577A (en) * | 1975-11-17 | 1977-06-14 | Betz Laboratories, Inc. | Polymers for use in water treatment |
US4102843A (en) * | 1977-01-07 | 1978-07-25 | Rohm And Haas Company | Dispersing paint pigments |
US4324684A (en) * | 1979-10-29 | 1982-04-13 | Betz Laboratories, Inc. | Stable compositions for use as corrosion inhibitors |
JPS596164B2 (en) * | 1979-12-24 | 1984-02-09 | 花王株式会社 | Pigment dispersant for paints |
US4435556A (en) * | 1983-03-28 | 1984-03-06 | Masler Iii William F | Method of making and using novel scale inhibiting terpolymer |
US4913822A (en) * | 1983-10-26 | 1990-04-03 | Betz Laboratories, Inc. | Method for control of scale and inhibition of corrosion in cooling water systems |
JPS6153627A (en) | 1984-08-24 | 1986-03-17 | Canon Inc | Copying device |
JPS62214186A (en) * | 1986-03-13 | 1987-09-19 | Nippon Shokubai Kagaku Kogyo Co Ltd | Corrosion preventive agent for metal |
US5077361A (en) * | 1989-06-26 | 1991-12-31 | Rohm And Haas Company | Low molecular weight water soluble phosphinate and phosphonate containing polymers |
US5158622A (en) * | 1991-02-12 | 1992-10-27 | Betz Laboratories, Inc. | Method and composition for treatment of aluminum |
CN101884888B (en) * | 2010-06-13 | 2012-05-30 | 华南理工大学 | Grinding-aid dispersant of inorganic powder body of aqueous acrylic phosphinates and preparation method thereof |
ES2635213T3 (en) * | 2010-12-17 | 2017-10-02 | Basf Se | Stable polyacrylic acids, their manufacture and use |
WO2012086716A1 (en) * | 2010-12-21 | 2012-06-28 | 株式会社日本触媒 | Aqueous poly(meth)acrylic acid (salt) solution and process for preparing same |
CN103045002B (en) * | 2013-01-17 | 2014-04-09 | 长沙华润涂料有限公司 | Method for preparing environment-friendly and efficient water-borne coating dispersing agent |
FR3024732B1 (en) * | 2014-08-08 | 2016-08-12 | Snf Sas | HYDROSOLUBLE HYDROXYALKYL POLYMER OBTAINED BY INVERSE SUSPENSION POLYMERIZATION PROCESS OR REVERSE EMULSION |
US10118979B2 (en) * | 2014-09-19 | 2018-11-06 | Nippon Shokubai Co., Ltd. | Binder and aqueous solution |
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2016
- 2016-04-27 FR FR1653718A patent/FR3050733B1/en active Active
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- 2017-03-29 MX MX2018011389A patent/MX2018011389A/en unknown
- 2017-03-29 WO PCT/FR2017/050718 patent/WO2017174899A1/en active Application Filing
- 2017-03-29 CA CA3018451A patent/CA3018451A1/en not_active Abandoned
- 2017-03-29 CN CN201780020230.6A patent/CN108884337A/en active Pending
- 2017-03-29 EP EP17720182.9A patent/EP3440137A1/en active Pending
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CA3018451A1 (en) | 2017-10-12 |
FR3050733B1 (en) | 2021-02-12 |
US20200291152A1 (en) | 2020-09-17 |
MX2018011389A (en) | 2019-02-13 |
US11447588B2 (en) | 2022-09-20 |
CN108884337A (en) | 2018-11-23 |
WO2017174899A1 (en) | 2017-10-12 |
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