WO2009074334A2 - Verfahren zum funktionalisieren von hartstoffpartikeln - Google Patents
Verfahren zum funktionalisieren von hartstoffpartikeln Download PDFInfo
- Publication number
- WO2009074334A2 WO2009074334A2 PCT/EP2008/010581 EP2008010581W WO2009074334A2 WO 2009074334 A2 WO2009074334 A2 WO 2009074334A2 EP 2008010581 W EP2008010581 W EP 2008010581W WO 2009074334 A2 WO2009074334 A2 WO 2009074334A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hard material
- polymerizable
- group
- groups
- anchor molecule
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/40—Compounds of aluminium
- C09C1/407—Aluminium oxides or hydroxides
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/12—Treatment with organosilicon compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
Definitions
- Particles are of great economic importance, especially when used in surface coatings designed to provide abrasion resistant surfaces for a variety of materials.
- the particles are usually mixed into polymerizable surface coatings, which form a matrix of synthetic resins after curing on the surface to be coated.
- the surface coatings are usually tailored to the respective surface and the application process.
- the hard material particles include e.g. Corundum, carbides, especially silicon carbide and tungsten carbide, boron nitride, diamonds and silicates.
- Corundum is then also representative of other hard material particles.
- Corundum is used, for example, on a large scale in the coating of HoIz- and / or wood-based surfaces, especially in the coating of floor elements with thermosetting, thermosetting synthetic resins. Corundum also contributes particularly to improving the abrasion resistance of the surface coating. In this connection, it is known that the transparency of the coating is improved when silanized corundum is used. The cobalt is silanized to better match the polarity of the corundum surface with the polarity of the particular resin, thereby improving the miscibility of the corundum with the resin. As a result, this improves the transparency of the surface coating.
- thermosetting surface coatings for floor elements eg. B. on the basis of melamine resin
- Radiation-curing paints are in a thin layer on the surface of workpieces, here z. B. of wood materials applied to -unter Use of hard material particles - to produce abrasion-resistant coatings.
- the problem is the permanent, safe incorporation of the hard particles in the paint of the surface coating.
- the early breaking out of the hard-material particles from the synthetic resin matrix severely impairs the abrasion resistance of the surface coating. This phenomenon is independent of the respectively selected synthetic resin, hard material or the type of surface to be coated.
- the inventive method for producing functionalized hard material particles is carried out by reacting at least one hard material particle with at least one anchor molecule, wherein an anchor molecule has at least one silane coupling group and at least one polymerizable group.
- Silane coupling group and polymerizable group are connected via a bridging group, which in the simplest case consists of a carbon atom.
- anchor molecule is used for a molecule which has at least one, preferably two or three, silane coupling groups which chemically bond with the surface of the hard particle and which has at least one polymerisable group, preferably with the polymerizable coating agent of the surface coating undergoes a crosslinking reaction.
- the hard material particles typically corundum, firmly bound by chemical bonds in the matrix of the resin and a Breaking the particles from the cured surface coating due to use is largely prevented.
- the polymerizable group behaves inertly under the reaction conditions which result in the attachment of the silane coupling group to the surface of the hard particle.
- the polymerizable group preferably reacts under the reaction conditions, e.g. As heat or radiation, which lead to the curing of the polymerizable coating agent of the surface coating.
- this eliminates a significant error that has been shown in the use of hard-coat surface coatings.
- the efficiency of the hard material used in the abrasion behavior of the surface coating is significantly reduced by the fact that the hard material particles (also silanized hard material particles) are not optimally integrated into the polymer matrix of a surface coating. They are broken out of the paint surface relatively quickly under the influence of abrasive stress.
- the solution according to the invention provides a remedy.
- the functionalized hard material according to the invention is permanently embedded in the surface coating of a material, eg a wood material, wood, abrasives or clutch disks, by "incorporation" of selected polymerizable groups.
- Corundum is a commonly used hard material.
- all other hard materials in particular the abovementioned carbides, nitrides, oxides and silicates and also diamond, are also suitable according to the invention.
- the functionalization of hard material particles takes place in a solvent which is inert under the reaction conditions of a hydrolysis.
- Inert means in this context that under the conditions of the hydrolysis the solvent does not react with either the silane coupling group or the polymerizable group.
- Water is not used as a solvent due to its strong hydrolyzing properties. It is therefore preferred to use inert, nonaqueous solvents.
- Typical inert solvents are alcohols, ester or ether solutions.
- Preferred solvents are liquid, polymerizable monomers which react with the coating agent of the subsequent surface coating. It is also possible to use mixtures of the abovementioned solvents.
- polymerizable monomer or monomers which are used as solvents it is preferred if the monomers have no reactive OH groups. This avoids the undesirable condensation reactions between silane and solvent described above.
- Preferred polymerisable monomers include alkenes (eg butadiene), dicarboxylic acids and dicarboxylic acid derivatives, diols, acrylates, acrylates, methacrylates, alkyl methacrylates, phthalic acid esters and / or diamines.
- the bonding of the silane coupling groups to the surface of the hard material particle is usually carried out in the presence of slightly substoichiometric amounts of water, which allow a targeted reaction of the silane coupling groups with the hard material surface.
- the molar ratio between the hydrolyzable groups of the silane and water (expressed as ROR value) should be set below 0.8, preferably below 0.6, advantageously below 0.4, more preferably below 0.2.
- a catalyst is added to the solvent, which simplifies the hydrolysis of the silane coupling groups.
- a base or an acid organic or mineral
- hydrochloric acid, phosphoric acid, sulfuric acid, formic acid or acetic acid and sodium hydroxide solution, ammonia or ammonium hydroxide is used, for example hydrochloric acid, phosphoric acid, sulfuric acid, formic acid or acetic acid and sodium hydroxide solution, ammonia or ammonium hydroxide.
- dilute bases or acids are usually used, the amount of water added with the catalyst is used to set the desired RO R value.
- At least one silane adhesion group and at least one polymerizable group are required for an anchor molecule for the chemical crosslinking of the hard material particles with the polymer matrix of the surface coating.
- anchor molecules are used which have two, three or more silane coupling groups and two or more polymerizable groups.
- mixtures may also be used.
- ner anchor molecules are used.
- the polymerizable groups of the anchor molecule are preferably matched to the polymerizable groups of the coating agent and react with these groups, so that a polymer matrix is formed in which the hard material particles are much better bound by chemical bonds than hitherto.
- To implement the invention are basically one or more anchor molecules of the general formula O. in which in the formula i the radicals R are identical or different and are polymerizable under the reaction conditions of the hydrolysis, non-hydrolyzable groups, 5 - the radicals X on the silicon atom are identical or different and are hydrolyzable groups or hydroxyl groups, in general silane coupling groups, and a is 1,2 or 3 or an oligomer derived therefrom.
- the value a is preferably 1.
- the hydrolyzable groups are X (silane coupling groups) which may be the same or different from each other, for example, hydrogen or halogen (F, Cl, Br, or I), alkoxy (preferably Ci -6-alkoxy, such as methoxy, ethoxy, n-propoxy and butoxy), aryloxy (preferably C6-io-aryloxy, such as phenoxy), acyloxy (preferably C2-7-acyloxy, such as e.g.
- X silane coupling groups
- alkoxy preferably Ci -6-alkoxy, such as methoxy, ethoxy, n-propoxy and butoxy
- aryloxy preferably C6-io-aryloxy, such as phenoxy
- acyloxy preferably C2-7-acyloxy, such as e.g.
- Acetoxy or propionoxy) alkylcarbonyl5 (preferably C 2-7 -alkylcarbonyl, such as: acetyl), amino, monoalkylamino or dialkylamino having preferably 1 to 12, in particular 1 to 6, carbon atoms.
- Preferred hydrolyzable radicals are halogens, alkoxy groups and acyloxy groups. Particularly preferred hydrolyzable groups are C 1-4 alkoxy groups, especially methoxy and ethoxy groups.
- non- hydrolyzable radicals R which may be the same or different, are nonhydrolyzable radicals R having a functional group via which crosslinking with the polymer matrix of a surface coating is possible.
- the radicals R are inert under the reaction conditions under which the silane coupling groups are attached to the surface of the hard material particles.
- the non-hydrolyzable radical R having a functional group via which a crosslinking is possible can, for. B. be selected from a group having as functional group an epoxide (eg: glycidyl or glycidyloxy), hydroxy, ether, amino, monoalkylamino, dialkylamino optionally substituted anilino, amide, carboxy Alkynyl, acrylic, acryloxy, methacrylic, methacryloxy, mercapto, cyano, alkoxy, isocyanato, aldehyde, alkylcarbonyl, acid anhydride and / or phosphoric acid group.
- an epoxide eg: glycidyl or glycidyloxy
- hydroxy, ether amino, monoalkylamino, dialkylamino optionally substituted anilino, amide, carboxy Alkynyl, acrylic, acryloxy, methacrylic, methacryloxy, mercapto
- Preferred examples of the preferably polymerizable, non-hydrolyzable radicals R with functional groups via which crosslinking is possible are a glycidyl, or a glycidyloxy- (C 1 -C 20) -alkylene radical, an acryloxy- (C 1 -) - alkylene radical, such as.
- Particularly preferred radicals are y-glycidyloxypropyl and acryloxypropyl and methacryloxypropyl
- These functional groups are bonded to the silicon atom via alkyl, alkylene, alkenylene, or arylene bridging groups which may be interrupted by oxygen or -NH groups.
- the bridging groups preferably contain 1 to 8 and especially 1 to 6 carbon atoms.
- Examples of non-hydrolyzable radicals R with alkenyl or alkynyl groups are C 2-6 alkenyl, such as. As vinyl, l-propenyl, 2-propenyl and butenyl and C2-6-alkynyl such. As acetylenyl and propargyl.
- anchor molecules are y-glycidyloxypropyltrimethoxysilane, - y-glycidyloxypropyltriethoxysilane,
- 3-isocynactopropyltriethoxysilane 3-aminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-acryloxypropyltriethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane.
- polymerizable in the context of the invention are in particular polymerizable, polyaddable and / or polycondensable groups; according to the invention, the polymerization reaction means all reactions via which crosslinking with the polymerizable coating agent of the surface coating
- the polymerisable groups are preferably selected such that an organic crosslinking and incorporation of the hard material particles into the polymer matrix of the surface coating can be carried out via optionally catalyzed polymerization, addition and / or condensation reactions.
- the ratio of solvent: hard material is advantageously i: 1.5 to 1: 3, preferably 1: 2.0 to 1: 2.5, in each case in% by weight.
- anchor molecules Based on the hard material used so only a small proportion of anchor molecules is required to better integrate the hard particles in polymerizable coatings. Based on the hard material used, only up to 0.001% by weight of anchor molecules is used, preferably up to 0.01% by weight, more preferably up to 0.1% by weight, advantageously up to 1.0% by weight of hard material. Thus, only a small amount of anchor molecules is required to allow a significant improvement in the adhesion or incorporation of the hard material into polymerizable coating agents or surface coatings by bonding the adhesive groups to the surface of the hard material.
- a particular advantage of the invention is to be considered that as a result of the improved incorporation of hard material, usually of corundum in the polymer matrix of surface coatings and larger hard particles can be used. Larger hard particles are substantially cost- cheaper than widely comminuted particles.
- a stabilizer can be added.
- the invention relates to the functionalized hard material as a process product, but the subject of the invention are also polymerizable coating compositions which in addition to polymerizable monomers and / or oligomers and hard particles which are connected to at least one anchor molecule whose at least one silane coupling group with the surface of the hard particle is connected, and having at least one polymerizable group, the polymer ensue with the monomers and / or oligomers of the coating agent via addition or condensation. It may be both z. b. thermosetting as well as radiation curable surface coatings act.
- the invention further relates to a workpiece, in particular a Holzwerkstoffpa- neel, which is at least partially coated with a polymerized coating agent containing hard material particles, especially corundum, wherein the hard material particles are connected to an anchor molecule having at least one adhesion group of a silane, with the surface of the hard material is chemically bonded, and wherein the anchor molecule has at least one polymerized group which is chemically bonded to the coating agent via a preceding addition, condensation and / or polymerization reaction.
- Typical areas of application for surfaces coated according to the invention are workbenches, work surfaces or floors.
- the invention further abrasives and clutch plates, which are provided in the manner described above with a coating containing Erflndungshiel functionalized hard material particles. Details of the invention are explained in more detail in the following exemplary embodiment:
- a dispersion of corundum in solvent is prepared.
- 60% by weight of corundum are stirred for 15 minutes in 40% by weight of 3,4-epoxycyclohexylmethyl-3-4-epoxycyclohexane using a dispersing stirrer.
- the 3,4-epoxycyclohexylmethyl-3-4-epoxycyclohexane serves as an inert solvent.
- 1% by weight (based on the corundum used) of an anchor molecule, in this case ⁇ -glycidyloxypropyltriethoxysilane is added to this dispersion and the mixture is likewise stirred for 15 minutes.
- the aforementioned anchor molecule has three silane coupling groups and an epoxy group as the polymerizable group.
- 0.1 molar hydrochloric acid is added in an amount such that a ROR value of 0.8 is established.
- the dispersion is stirred after adding the hydrochloric acid again for 30 minutes, the temperature does not rise above 50 0 C.
- the dispersion containing functionalized corundum is storable for at least one month.
- corundum it is also possible to use other hard material particles, in particular those having a density of more than 1.5 g / cm 3, for example boron nitride, silicon carbide or diamonds.
- the dispersion described above containing functionalized corundum is treated with a liquid, UV-curing epoxy paint, for.
- a liquid, UV-curing epoxy paint for example, Uvacure 1533 from Cytec, mixed in a weight ratio of 3: 2.
- the weight ratio between epoxy paint and corundum dispersion can be chosen within a wide range, depending on how much corundum particles are required for the respective surface coating.
- This coating material can be stored for at least one month. 3. Coating a workpiece with a surface coating containing functionalized corundum
- a cationic photoinitiator eg Additol PCPK from Cytec
- a cationic photoinitiator eg Additol PCPK from Cytec
- MDF boards coated according to the invention were subjected to an abrasion test.
- MDF boards which are coated with the same UV-curing epoxy paint containing an equal amount of corundum but which is only silanized, non-functionalized and which has cured under the same conditions as the MDF coated according to the invention. Plates.
- the abrasion test according to EN 13329 showed that all coated panels reached the abrasion class AC3. However, it yielded at least 15% improved test results for the functionalized corundum coated panels of this invention. So it can either total abrasion resistant surfaces or predetermined
- Abrasion values can be achieved with less use of corundum.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/747,622 US20110020656A1 (en) | 2007-12-12 | 2008-12-12 | Process for Functionalizing Hard Material Particles |
| EP08858452A EP2225330A2 (de) | 2007-12-12 | 2008-12-12 | Verfahren zum funktionalisieren von hartstoffpartikeln |
| CN200880126640XA CN101945954A (zh) | 2007-12-12 | 2008-12-12 | 用于官能化硬质材料颗粒的方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710060376 DE102007060376B3 (de) | 2007-12-12 | 2007-12-12 | Verfahren zum Funktionalisieren von Korund |
| DE102007060376.4 | 2007-12-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2009074334A2 true WO2009074334A2 (de) | 2009-06-18 |
| WO2009074334A3 WO2009074334A3 (de) | 2009-08-27 |
Family
ID=40459224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2008/010581 Ceased WO2009074334A2 (de) | 2007-12-12 | 2008-12-12 | Verfahren zum funktionalisieren von hartstoffpartikeln |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20110020656A1 (de) |
| EP (1) | EP2225330A2 (de) |
| CN (1) | CN101945954A (de) |
| DE (1) | DE102007060376B3 (de) |
| WO (1) | WO2009074334A2 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4864031A (de) * | 1971-12-13 | 1973-09-05 | ||
| EP1195416A3 (de) * | 2000-10-05 | 2005-12-28 | Degussa AG | Polymerisierbare siliciumorganische Nanokapseln |
| EP1249470A3 (de) * | 2001-03-30 | 2005-12-28 | Degussa AG | Hochgefüllte pastöse siliciumorganische Nano- und/oder Mikrohybridkapseln enthaltende Zusammensetzung für kratz- und/oder abriebfeste Beschichtungen |
| DE50210398D1 (de) * | 2001-03-30 | 2007-08-16 | Degussa | Siliciumorganische Nano-Mikrohybridsysteme oder Mikrohybridsysteme enthaltende Zusammensetzung für kratz- und abriebfeste Beschichtungen |
| DE10330020A1 (de) * | 2003-07-03 | 2005-01-20 | Degussa Ag | Hochgefüllte Silan-Zubereitung |
| DE102004014686A1 (de) * | 2004-03-25 | 2005-10-13 | Consortium für elektrochemische Industrie GmbH | Oberflächenmodifizierte Partikel enthaltende härtbare Zusammensetzung |
| DE102004014684A1 (de) * | 2004-03-25 | 2005-10-13 | Consortium für elektrochemische Industrie GmbH | Oberflächenmodifizierte Partikel enthaltende härtbare Zusammensetzung |
| DE102005039435A1 (de) * | 2005-08-18 | 2007-03-01 | Clariant International Limited | Verfahren zur Herstellung von mit Silanen oberflächenmodifiziertem Nanokorund |
-
2007
- 2007-12-12 DE DE200710060376 patent/DE102007060376B3/de not_active Revoked
-
2008
- 2008-12-12 CN CN200880126640XA patent/CN101945954A/zh active Pending
- 2008-12-12 WO PCT/EP2008/010581 patent/WO2009074334A2/de not_active Ceased
- 2008-12-12 EP EP08858452A patent/EP2225330A2/de not_active Withdrawn
- 2008-12-12 US US12/747,622 patent/US20110020656A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20110020656A1 (en) | 2011-01-27 |
| CN101945954A (zh) | 2011-01-12 |
| DE102007060376B3 (de) | 2009-04-23 |
| EP2225330A2 (de) | 2010-09-08 |
| WO2009074334A3 (de) | 2009-08-27 |
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