EP1419202A1 - Verfahren zum beschichten von substratoberflächen - Google Patents
Verfahren zum beschichten von substratoberflächenInfo
- Publication number
- EP1419202A1 EP1419202A1 EP02776924A EP02776924A EP1419202A1 EP 1419202 A1 EP1419202 A1 EP 1419202A1 EP 02776924 A EP02776924 A EP 02776924A EP 02776924 A EP02776924 A EP 02776924A EP 1419202 A1 EP1419202 A1 EP 1419202A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- polymer
- solvolysis
- coating
- particles
- 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- Withdrawn
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
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3676—Treatment with macro-molecular organic compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0001—Post-treatment of organic pigments or dyes
- C09B67/0004—Coated particulate pigments or dyes
- C09B67/0008—Coated particulate pigments or dyes with organic coatings
- C09B67/0013—Coated particulate pigments or dyes with organic coatings with polymeric coatings
-
- 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
- C09C1/62—Metallic pigments or fillers
- C09C1/64—Aluminium
- C09C1/644—Aluminium treated with organic compounds, e.g. polymers
-
- 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
- C09C3/10—Treatment with macromolecular organic compounds
-
- 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
- C09D5/002—Priming paints
-
- 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
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of 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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
Definitions
- the invention relates to a method for coating substrate surfaces, which serves in particular to modify the surfaces.
- the latter in turn in particular with regard to the targeted adaptation of the hydrophilicity or hydrophobicity of the surface of the substrates.
- the invention further aims to stabilize particles against flocculation. Another important area of application is the improvement of the resistance of the substrate surfaces to surrounding media.
- the surfaces of the substrates can be adapted to media with which the substrates are subsequently brought into contact for coating, are introduced or incorporated therein.
- This topic is of interest, for example, in the case of pigments, in order to be able to incorporate them better into paints and lacquers to be pigmented and then to keep them stably dispersed in the target medium.
- British patent GB-1,077,422 discloses a pigment dispersion for water-thinnable paints and varnishes in which a partially saponified to improve the dispersibility of the pigments in the water-diluted state and also to improve the possibility of redispersion of pigments of the dye or lacquer composition
- Polyvinyl acetate or a water-soluble, partially etherified derivative thereof or a polyvinyl alcohol is added in the amount of at least 5% by weight based on the weight of the pigments in the dispersion.
- US Pat. No. 4,127,422 A discloses dry pigment compositions which, in addition to the pigment, comprise 15 to 45% by weight of a nonionic dispersing agent and 10 to 67% by weight of a water-dispersible, at least partially hydrolyzed vinyl acetate-based polymer or a polymer Contains N-vinyl pyrrolidone base.
- this process gives a mixture of coated particles on the one hand and isolated polymer on the other hand, ie the polymer used is found in the end product both in the deposited form and in pure form.
- the object of the present invention is to provide a method for coating substrate surfaces and, in particular, for influencing their hydrophilicity or hydrophobicity, with which this effect can be achieved simply and without great effort and in which, in addition, a separation of not on the surface deposited polymer can be made.
- solvolysis serves to reduce the solubility of the polymer in the solvent in the presence of the substrate and thus to cause the polymer to be deposited and / or immobilized on the substrate surface. Very strong effects can often be achieved here.
- the deposit that can be achieved goes beyond mere adsorption of the polymer on the surface and in particular allows the thickness of the deposited layer to be checked. This opens up the possibility of specifically building up the desired layer thicknesses of the coating.
- the number of free hydroxyl or carboxyl groups and thus the hydrophilicity or hydrophobicity imprinted on the substrate surface can be determined very simply by varying the reaction time.
- the polymers are preferably used with a molecular weight of 1,000 to 50,000, especially if the substrate is a particulate substrate. For flat substrates, the preferred upper limit of the molecular weight is 500,000.
- preferred polymers are selected from polyvinyl alcohols, polyacid derivatives, polyvinyl halides and polyvinyl ethers.
- the preferred polyvinyl derivatives include in particular polyvinyl esters, e.g. Polyvinyl acetate and polyvinyl alcohol acetals.
- polyacid derivatives include polyacid esters, e.g. Maleic acid ester copolymers, polyacrylic acid esters and their respective derivatives, polyacid anhydrides, e.g. Polymaleic anhydride derivatives, and polyacid halides.
- Preferred polymers have unsaturated groups (in particular double bonds) in side chains and / or the main chain of the polymer molecules.
- An organic solvent is generally used as the solvent.
- anchor groups are: carboxyl, amino, hydroxyl and mercapto groups.
- the polymer is preferably modified after its deposition on the substrate surface and crosslinked at the same time. Immobilization takes place here, if an immobilization has not already been achieved by the solvolysis process. This then gives a substrate surface with the desired hydrophilic or hydrophobic property and at the same time stabilizes the coating of the surface.
- the crosslinking reaction can be carried out radically or as a condensation reaction or an addition reaction.
- the coating on the surface of the substrate has a certain elasticity and can easily compensate for differences in the coefficient of thermal expansion with the underlying substrate surface.
- the present method and the polymer coatings reliably prevent the coating from flaking off, as is observed, for example, in the case of protective brittle oxide layers made of aluminum oxide or silicon dioxide or also chromates.
- the substrate which can be provided with a surface coating according to the present method, can on the one hand be a particulate substrate, but on the other hand it can also be a flat substrate such as e.g. a metal sheet.
- the polymer is preferably used with a molar mass of 1,000 to 50,000 g / mol.
- the polymer is selected with a molecular weight of 1,000 to 500,000 g / mol.
- particulate substrates a large number of substrates are suitable, for example pigments, fillers, fibers, nanoparticles, particles from colloidal or micellar systems, or else the platelet-shaped particles already mentioned at the outset which are used in metallic coatings.
- the method according to the invention is particularly suitable for applying very thin layers, so-called nano-layers, to a substrate surface. gene, whereby these nano-layers can offer a dense covering of the surface of the substrate despite their small layer thickness.
- polyvinyl esters e.g. polyvinyl acetate
- a polymaleic anhydride derivative e.g. commercial polystyrene-polymaleic anhydride copolymer
- the overall polymer layer deposited can be immobilized by a subsequent thermal treatment.
- olefinic polymer layers can be produced relatively easily, which enable radical crosslinking.
- esters of polyvinyl alcohol with unsaturated carboxylic acids e.g. cinnamic acid esters; relatively easily accessible via a two-phase reaction
- a polymer layer is then formed, which can then be crosslinked by free radicals.
- An olefinic polymer layer can also be produced by, for example, solvolysis of polyvinyl acetate derivatives to polyvinyl alcohol derivatives in the presence of the Substrate. Water is split off by thermal stress at over 150 ° C and conjugated double bond systems are formed. This elimination of water is made considerably easier in the presence of carbonyl groups in the polymer.
- the invention further relates to a substrate with a polymer-coated surface, which is produced by one of the methods according to the invention discussed above.
- substrates with a coating with a so-called nano-layer are of particular importance, and in particular substrates that are a metallic substrate.
- the present invention gains particular importance in the surface coating of steel, galvanized steel, aluminum or aluminum alloy substrates.
- the method according to the invention can be repeated several times in order to increase the layer thickness of the deposition on the substrate surface. Especially for flat substrates, which tend to have higher molecular weights the polymers are favorable, a larger layer thickness is obtained per process step or deposition step.
- Figure 4 Sample brightness of various samples after a condensed water test.
- a titanium dioxide modified by the above-mentioned method (solvolysis time 30 min.) Is well suited for aqueous systems.
- the dried lacquer layer applied to a glass plate showed no detachment and no blistering in the condensed water test in the condensed water test (DIN 50 017) at 72 hours exposure in contrast to lacquer layers, pigmented with the commercial original pigment (detoxification in several places and formation of larger bubbles).
- the pigments treated according to the invention were also clearly superior to commercial pigments in sedimentation experiments.
- 0.1 g pigment commercial or aftertreated was weighed into 10 ml liquid (distilled water as aqueous or butyl acetate as organic medium) and 15 min. at 23 ° C and 3,000 rpm. dispersed using a metal disc. The mixture was left to stand at room temperature for 72 hours, diluted with 8 ml of liquid in each case and filled into 20 ml test tubes. Sedimentation was monitored by before changing the relative scattered light intensity as a function of time at 10 cm test tube height.
- Example 2 Treatment of flat substrates such as an aluminum plate
- Two aluminum plates (Al 99.5; size: 70 x 25 x 1.5 mm) were added to the polymer solution thus prepared, and 100 ⁇ l of 15% ethanolic potassium hydroxide solution were added.
- FIG. 3 shows the results of the wetting angle investigation using distilled water as the liquid phase.
- the contact angle of water decreases the longer the samples have been exposed to solvolysis. Since the degree of solvolysis of polyvinyl alcohol esters is kinetically controlled when alcohols are used exclusively as solvents [CA Finch, Polyvinyl Alcohol - Properties and Applications, John Wiley & Sons, London, 1973], the hydrophilicity of the coating also increases with increasing solvolysis time, or the contact angle with water decreases. The development of the contact angle found when the samples were loaded was confirmed by a condensation test (DIN 50 017). As expected, the corrosion of the aluminum sample in the condensate test (DIN 50 017) should be greater, the higher the hydrophilicity of the coating or the lower the contact angle of the surface with water.
- a relative estimate of the extent of the corrosion can be made by measuring the brightness of the loaded samples. A high loss of brightness is usually offset by increased corrosion.
- the results of a brightness measurement after 24 h exposure of the three different aluminum samples in the condensation water test (DIN 50 017) at 40 ° C. are shown in FIG. 4. A higher hydrophilicity or a lower contact angle in FIG. 3 is therefore offset by an increased tendency to corrode or a lower brightness value (FIG. 4).
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10140247 | 2001-08-09 | ||
DE10140247A DE10140247A1 (de) | 2001-08-09 | 2001-08-09 | Verfahren zum Beschichten von Substratoberflächen |
PCT/EP2002/008849 WO2003014230A1 (de) | 2001-08-09 | 2002-08-07 | Verfahren zum beschichten von substratoberflächen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1419202A1 true EP1419202A1 (de) | 2004-05-19 |
Family
ID=7695662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02776924A Withdrawn EP1419202A1 (de) | 2001-08-09 | 2002-08-07 | Verfahren zum beschichten von substratoberflächen |
Country Status (5)
Country | Link |
---|---|
US (1) | US20040161537A1 (de) |
EP (1) | EP1419202A1 (de) |
JP (1) | JP4460287B2 (de) |
DE (1) | DE10140247A1 (de) |
WO (1) | WO2003014230A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009058297A1 (de) | 2009-12-01 | 2011-06-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | N-Allylcarbamat-Verbindungen und deren Verwendung, insbesondere in strahlungshärtenden Beschichtungen |
ITTO20110135A1 (it) * | 2011-02-17 | 2012-08-18 | Metlac S P A | Composizione di rivestimento per substrati metallici e relativi substrati metallici rivestiti. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1672156A (en) * | 1924-07-19 | 1928-06-05 | Consortium Elektrochem Ind | Process for the preparation of polymerized vinyl alcohol and its derivatives |
US4693939A (en) * | 1983-06-03 | 1987-09-15 | Minnesota Mining And Manufacturing Company | Article coated with copolymer of poly(vinyl alcohol) |
EP0528602A1 (de) * | 1991-08-16 | 1993-02-24 | Ciba-Geigy Ag | Verfahren zur Verbesserung der Lagerungsstabilität von Pigmenten |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB686269A (en) * | 1949-08-05 | 1953-01-21 | Ciba Ltd | Manufacture and use of pigment preparations |
BE623240A (de) * | 1961-10-04 | 1900-01-01 | ||
GB1077422A (en) * | 1964-02-25 | 1967-07-26 | Nippon Paint Co Ltd | An improved pigment dispersion for water thinnable paints |
US3993716A (en) * | 1970-09-22 | 1976-11-23 | Dow Badische Company | Acrylate compositions |
US3884871A (en) * | 1973-06-29 | 1975-05-20 | Nl Industries Inc | Process for coating pigment particles with organic polymers |
AT342163B (de) * | 1975-04-28 | 1978-03-28 | Hercules Inc | Trockene, in wasser dispergierbare pigmentmasse |
DE3926168A1 (de) * | 1989-08-08 | 1991-02-14 | Basf Ag | Verwendung von copolymerisaten auf basis von langkettigen alkylvinylethern und ethylenisch ungesaettigten dicarbonsaeureanhydriden zum hydrophobieren von leder und pelzfellen |
NL9100385A (nl) * | 1991-03-04 | 1992-10-01 | Stamicarbon | Toepassing van een kunststofdispersie als omhulling voor anorganische en organische deeltjes. |
DE69220717T2 (de) * | 1991-04-30 | 1997-11-06 | Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka | Chemisch adsorbierte Schicht und Verfahren zu deren Herstellung |
FR2755972B1 (fr) * | 1996-11-21 | 2004-04-02 | Merck Clevenot Laboratoires | Procede de preparation de microparticules de pigments mineraux enrobees d'une couche de chitine, microparticules obtenues et utilisation de ces microparticules |
US5972433A (en) * | 1997-12-05 | 1999-10-26 | Calgon Corporation | Method for treatment of metal substrates using Mannich-derived polyethers |
US6245387B1 (en) * | 1998-11-03 | 2001-06-12 | Diamon-Fusion International, Inc. | Capped silicone film and method of manufacture thereof |
DE19900494A1 (de) * | 1999-01-08 | 2000-07-13 | Creavis Tech & Innovation Gmbh | Hydrophobierungsverfahren für polymere Substrate |
-
2001
- 2001-08-09 DE DE10140247A patent/DE10140247A1/de not_active Withdrawn
-
2002
- 2002-08-07 JP JP2003519169A patent/JP4460287B2/ja not_active Expired - Lifetime
- 2002-08-07 EP EP02776924A patent/EP1419202A1/de not_active Withdrawn
- 2002-08-07 WO PCT/EP2002/008849 patent/WO2003014230A1/de active Application Filing
-
2004
- 2004-02-09 US US10/775,889 patent/US20040161537A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1672156A (en) * | 1924-07-19 | 1928-06-05 | Consortium Elektrochem Ind | Process for the preparation of polymerized vinyl alcohol and its derivatives |
US4693939A (en) * | 1983-06-03 | 1987-09-15 | Minnesota Mining And Manufacturing Company | Article coated with copolymer of poly(vinyl alcohol) |
EP0528602A1 (de) * | 1991-08-16 | 1993-02-24 | Ciba-Geigy Ag | Verfahren zur Verbesserung der Lagerungsstabilität von Pigmenten |
Non-Patent Citations (2)
Title |
---|
ALGER M: "Polymer Science Dictionary", 1 January 1997, CHAPMAN & HALL, London, UK, pages: 460 - 461 * |
See also references of WO03014230A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2005509692A (ja) | 2005-04-14 |
DE10140247A1 (de) | 2003-03-06 |
US20040161537A1 (en) | 2004-08-19 |
WO2003014230A1 (de) | 2003-02-20 |
JP4460287B2 (ja) | 2010-05-12 |
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