EP0306801A2 - Utilisation de dispersions aqueuses pour le décapage à air comprimé - Google Patents

Utilisation de dispersions aqueuses pour le décapage à air comprimé Download PDF

Info

Publication number
EP0306801A2
EP0306801A2 EP88114106A EP88114106A EP0306801A2 EP 0306801 A2 EP0306801 A2 EP 0306801A2 EP 88114106 A EP88114106 A EP 88114106A EP 88114106 A EP88114106 A EP 88114106A EP 0306801 A2 EP0306801 A2 EP 0306801A2
Authority
EP
European Patent Office
Prior art keywords
acid
diisocyanate
blasting
acrylate
groups
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.)
Granted
Application number
EP88114106A
Other languages
German (de)
English (en)
Other versions
EP0306801A3 (en
EP0306801B1 (fr
Inventor
Jürgen Dr. Schwindt
Dieter Dipl.-Ing. Kuron
Manfred Schoenborn
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to AT88114106T priority Critical patent/ATE75438T1/de
Publication of EP0306801A2 publication Critical patent/EP0306801A2/fr
Publication of EP0306801A3 publication Critical patent/EP0306801A3/de
Application granted granted Critical
Publication of EP0306801B1 publication Critical patent/EP0306801B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts

Definitions

  • the invention relates to the use of aqueous dispersions based on carboxyl group-containing binder, the carboxyl groups of which are at least partially neutralized, for compressed air blasting.
  • wet blasting This process, referred to as "wet blasting", has been improved by introducing the liquid in the form of a mist into the air flow so that the necessary amount of liquid could be reduced (“wet blasting", DE-OS 2 724 318).
  • the object of the invention was therefore to find additives for compressed air jets which should combine a good binding of the resulting dusts with good disposal options with a simultaneously highly effective provisional corrosion protection.
  • organic binders containing carboxyl groups the carboxyl groups of which have been at least partially neutralized with certain amines, solve the problem described.
  • the invention relates to the use of an aqueous dispersion based on organic binder, the carboxyl groups (before neutralization) correspond to an acid number of 40 to 70 and at least 60, preferably at least 70%, in particular at least 80% by a tertiary amine formula NR1R2R3 wherein R1, R2, R3 independently of one another C1-C6-alkyl, C6-C12-aryl, hydroxy-C2-C3-alkyl mean, are neutralized for compressed air blasting.
  • aqueous dispersions to be used in accordance with the invention allow, in addition to the primarily desired binding of the dust by the permanent dust binding, unproblematic disposal, offer surprisingly good temporary corrosion protection and are compatible with subsequent corrosion protection coatings.
  • Suitable organic binders for the dispersions to be used according to the invention are preferably (1) oil-free polyesters, (2) alkyd resins, (3) acrylate resins and (4) polyurethanes.
  • Oil-free polyesters (1) and alkyd resins (2) are understood to be polycondensates of the type produced from alcohols and carboxylic acids by polycondensation by known processes, of the type described, for example, in Römpp's Chemielexikon, Vol. 1, p. 202, Frankh'sche Verlagbuch Stuttgart, 1966 or described in DH Solomon, The Chemistry of Organic Filmformers, pp. 75-101, John Wiley & Sons Inc., New York, 1967.
  • alkyd resins are understood to mean fatty acid- or oil-modified polyesters.
  • Preferred acid components for the synthesis of the polyesters (1) or alkyd resins (2) are aliphatic, cycloaliphatic saturated or unsaturated and / or aromatic polybasic carboxylic acids, preferably di-, tri- and tetracarboxylic acids, with 2 to 14, preferably 4 to 12 C- Atoms per molecule or their esterifiable derivatives (eg anhydrides or esters), eg phthalic anhydride, isophthalic acid, tetrahydro- and hexahydrophthalic anhydride, endomethylene tetrahydrophthalic acid, succinic acid, glutaric acid and trimellitic acidic acid, trimellitic acid, trimellitic acid. Phthalic anhydride is the most common acid component.
  • Preferred alcohols for the synthesis of the polyesters (1) or alkyd resins (2) are aliphatic, cycloaliphatic and / or araliphatic alcohols with 1-15, preferably 2-6 C atoms, and 1-6, preferably 1-4, of non-aromatic C-bonded OH groups per molecule, e.g.
  • Glycols such as ethylene glycol, 1,2-propanediol and -1,3, 1,2-butanediol, 1,3 and -1,4, 1,3-2-ethylpropane, 1,3-2-ethylhexane, neopentyl glycol, 2,2-trimethylpentanediol-1,3, hexanediol-1,6, cyclohexanediol-1,2 and -1,4, 1,2- and 1,4-bis (hydroxymethyl) cyclohexane, adipic acid bis (ethylene glycol ester) ); Ether alcohols such as di- and triethylene glycol, dipropylene glycol; Dimethylolpropionic acid, oxalkylated bisphenols with 2 C2-C3-oxalkyl groups per molecule, perhydrogenated bisphenols; 1,2-butanetriol, 1,2,6-hexanetriol, trimethylolethane, trimethylolpropane, trimethyl
  • Monocarboxylic acids preferred for the preparation of the polyesters (1) or alkyd resins (2) are aliphatic, cycloaliphatic saturated and unsaturated and / or aromatic monocarboxylic acids with 3-24 carbon atoms per molecule, such as benzoic acid, p-tert-butylbenzoic acid, tolylic acid, hexahydrobenzoic acid , Abietic acid and lactic acid.
  • the alkyd resins (2) or polyester (1) can also monohydric alcohols with 1 to 8 carbon atoms such as methanol, propanol, cyclohexanol, 2-ethylhexanol, benzyl alcohol in amounts up to 15 wt .-%, based on alkyd resin (2) or polyester (1), condensed in. It is also possible to replace up to 25% of the ester bonds with urethane bonds.
  • Polyisocyanates preferably diisocyanates, are suitable for introducing these urethane bonds.
  • Preferred diisocyanates for this purpose are aliphatic, cycloaliphatic, araliphatic, aromatic and heterocyclic diisocyanates, as described, for example, by W.
  • the length of the oil in the alkyd resins (2) is generally 5 to 50, preferably 20 to 40,% by weight.
  • the drying or non-drying fatty acids which generally contain 6 to 24 carbon atoms, can be used either as such or in the form of their glycerol esters (triglycerides).
  • Vegetable and animal oils, fats or fatty acids such as e.g. Coconut, peanut, castor, wood, olive, soybean, linseed, cottonseed oil, safflower oil or oil fatty acids, dehydrated castor oil or fatty acid, monounsaturated fatty acids, lard, tallow and tears, tall oil fatty acid and synthetic fatty acids, which can be made from natural unsaturated oils or fatty acids by conjugation or isomerization.
  • Preferred saturated fatty acids are e.g. Coconut oil fatty acids, 2-ethylhexanoic acid, isononanoic acid (3,4,4-trimethylhexanoic acid) as well as palmitic and stearic acid.
  • the number average molecular weight of the polyester (1) or alkyd resin (2) is 2000 - 10,000 (up to molecular weights of 5000 determined by vapor pressure osmometry in dioxane and acetone, whereby the lower value is considered correct if the values differ; for molecular weights over 5000 membrane osmometric determined in acetone).
  • Preferred acrylate resins (3) are copolymers with number-average molecular weights M n from 600 to 5000, where at least 2 of the following monomers can be selected as starting products: Acrylic acid and methacrylic acid; Acrylic acid and methacrylic acid alkyl esters with 1-18, preferably 1-8 C atoms in the alcohol component, such as, for example, methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, n-butyl acrylate, tert-butyl acrylate, 2-ethylhexyl acrylate, stearyl acrylate and the corresponding methacrylic acid esters; Acrylic and methacrylic acid cyclohexyl esters; Esters of acrylic acid and methacrylic acid with dihydric, saturated, aliphatic alcohols with 2-4 C atoms, such as 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 4-hydroxybutyl acrylate
  • Starting materials for the production of component I are: (i) any organic polyisocyanates, preferably diisocyanates of the formula Q (NCO) 2 wherein Q represents an aliphatic hydrocarbon group having 4 to 12 carbon atoms, a cycloaliphatic hydrocarbon group having 6 to 15 carbon atoms, an aromatic hydrocarbon group having 6 to 15 carbon atoms or an araliphatic hydrocarbon group having 7 to 15 carbon atoms.
  • Q represents an aliphatic hydrocarbon group having 4 to 12 carbon atoms, a cycloaliphatic hydrocarbon group having 6 to 15 carbon atoms, an aromatic hydrocarbon group having 6 to 15 carbon atoms or an araliphatic hydrocarbon group having 7 to 15 carbon atoms.
  • diisocyanates examples include tetramethylene diisocyanate, hexamethylene diisocyanate, dodecamethylene diisocyanate, 1,4-diisocyanatocyclohexane, 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate ("isophorone diisocyanate"), 4,4'-diisocyanato-dicyclohexylmethane, 4,4'-diisocyanate dicyclohexylpropane- (2,2), 1,4-diisocyanatobenzene, 2,4- and 2,6-diisocyanatotoluene or mixtures of these isomers, 4,4'- or 2,4'-diisocyanatodiphenylmethane, 4,4'-diisocyanato-diphenylpropane - (2,2), p-xylylene diisocyanate and ⁇ , ⁇ ,
  • polyisocyanates known per se in polyurethane chemistry or else modified polyisocyanates containing, for example, carbodiimide groups, allophanate groups, isocyanurate groups, urethane groups and / or biuret groups.
  • polyisocyanates examples include tris (6-isocyanatohexyl) biuret, optionally in a mixture with its higher homologues, tris (6-isocyanatohexyl) isocyanurate, optionally in a mixture with its higher homologues, as described, for example, in DE-OS 28 39 133 is accessible by trimerizing hexamethylene diisocyanate, and further by trimerizing aliphatic and / or aromatic diisocyanates, such as.
  • "Isophorone diisocyanate" diisocyanatotoluene and hexamethylene diisocyanate available, isocyanurate group-containing polyisocyanates as they belong to the known prior art.
  • polyisocyanates are the polyisocyanates known per se, such as those obtained by reacting excess amounts of 2,4-diisocyanatotoluene or "isophorone diisocyanate" with simple polyhydric alcohols in the molecular weight range 62 to 300, in particular with trimethylolpropane, and subsequent distillatives Removal of the unreacted excess diisocyanate can be obtained.
  • polyether and / or polyester polyols of the type known per se in polyurethane chemistry preferably polyether and polyester diols with molecular weights of 300 to 2,000.
  • the polyether in question hydroxyl groups are z. B. by polyaddition of cyclic ethers such as preferably propylene oxide or butylene oxide, tetrahydrofuran, styrene oxide and / or epichlorohydrin with itself, for. B. in the presence of boron trifluoride, or by the addition of these compounds, optionally in a mixture or in succession, to starting components with reactive hydrogen atoms such as alcohols and amines, for. B. water, ethylene glycol, propylene glycol (1,3) or - (1,2), bisphenol-A or aniline.
  • the hydroxyl-containing polyesters are z. B. Reaction products of preferably polyhydric, particularly preferably dihydric and optionally additionally trihydric alcohols with preferably polybasic, particularly preferably dibasic carboxylic acids. Instead of the free carboxylic acids, the corresponding carboxylic acid anhydrides or corresponding carboxylic acid esters of lower alcohols can also be used to prepare the polyesters.
  • the alcohols to be used as the polyester construction component are e.g. B. ethylene glycol, propylene glycol (1,2) and - (1,3), butanediol (1,4), hexanediol (1,6), neopentyl glycol, octanediol (1,8), 2-ethyl-hexanediol - (1,3), 1,4-bishydroxymethylcyclohexane, diethylene glycol, dipropylene glycol, trimethylolpropane, glycerin and pentaerythritol.
  • B ethylene glycol, propylene glycol (1,2) and - (1,3)
  • butanediol (1,4) hexanediol (1,6), neopentyl glycol, octanediol (1,8), 2-ethyl-hexanediol - (1,3), 1,4-bishydroxymethylcycl
  • Carboxylic acids to be used as polyester components are e.g. B. adipic acid, succinic acid, suberic acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, maleic acid, fumaric acid, saturated and unsaturated fatty acids such as. B. stearic acid, oleic acid, ricinoleic acid, linoleic acid, ricinic acid, linolenic acid, elaostearic acid and from natural oils, such as. B. linseed oil, soybean oil, peanut oil, safflower oil, castor oil or wood oil, obtained fatty acid mixtures.
  • B. linseed oil soybean oil, peanut oil, safflower oil, castor oil or wood oil
  • low molecular weight polyols with molecular weights from 62 to 300.
  • polyols suitable according to the invention are ethanediol, propanediol- (1,2) and - (1,3), butanediol- (1,4) and - (1,3 ), Pentanediols, hexanediols, octanediols such as B. 2-ethylhexanediol- (1,3), trimethylolpropane, glycerol and pentaerythritol.
  • Representatives of the polyisocyanate and hydroxyl compounds to be used for the preparation of the binders (4) are, for. B. High Polymers, Vol. XVI, "Polyurethane Chemistry and Technology” by Saunders-Frisch, Interscience Publishers, New York, London, Volume I, 1962, pp. 32-42 and pp. 44-54 and Band II, 1964, pp. 5-6 and 198-199, as well as in the Kunststoff-Handbuch , Volume VII, edited by Vieweg-Höchtlen, Carl Hanser Verlag, Kunststoff, 1966, z. B. on pp. 54-71.
  • caprolactam oximes such as acetone oxime, methyl ethyl ketone oxime and cyclohexanone oxime, CH-acidic compounds such as malonic acid esters, acetoacetic acid esters and acetylacetone, alcohols such as the simple monoalcohols with 1 to 4 carbon atoms, 2-ethylhexanol, ethylene glycol monoethyl ether and diethylene glycol and phenol monomethyl ether, phenols Xylenol and heterocyclic compounds such as triazoles, imidazolines, imidazoles and tetrahydropyridines.
  • oximes such as acetone oxime, methyl ethyl ketone oxime and cyclohexanone oxime
  • CH-acidic compounds such as malonic acid esters, acetoacetic acid esters and acetylacetone
  • alcohols such as the simple monoalcohols with 1 to 4 carbon atom
  • the blocking agents can be used alone or as mixtures.
  • Preferred blocking agents are ⁇ -caprolactam, butanone oxime and diethyl malonate.
  • polyurethane prepolymers (component I) suitable as polyisocyanates I can be prepared by customary methods be prepared in accordance with the prior art, for example by reacting polyisocyanates (i) with higher molecular weight polyols (ii) and low molecular weight polyols (iii), the molar ratio of the isocyanate groups of the polyisocyanate (i) to the hydroxyl groups of the polyols (ii) and ( iii) can be from 1.5 to 3.0.
  • the resulting polyurethane prepolymers with free isocyanate groups are then reversibly blocked with suitable monofunctional compounds (iv) to block the isocyanate groups.
  • the structure of polyurethane prepolymers (I) is described, for example, in German Pat. No. 1,644,813.
  • Component I comprises both reaction products of the polyisocyanates (I) and blocking agents (iv) and blocked polyisocyanate prepolymers based on the above-mentioned compounds (i) and (ii) and / or (iii).
  • the polymers containing H-atoms reactive with isocyanate groups are polyester or polyether polyols, polyhydric low molecular weight alcohols, polyamines, polyepoxypolyols, polyhydroxy acrylates or any mixtures of the products mentioned.
  • the polyester polyols and polyether polyols are compounds of the type known per se in polyurethane chemistry with number average molecular weights M n from 300 to 10,000, preferably 300 to 5,000. they are preferably formed from the structural components (ii) of the polyurethane prepolymers (I) described above.
  • the low molecular weight alcohols are polyalcohols of the known type with at least 2 hydroxyl groups per molecule and molecular weights between 62 and 300.
  • the polyamines in question are preferably di- or polyfunctional aliphatic or cycloaliphatic amines such as 1,2-diaminoethane, tetramethylene diamine, hexamethylene diamine, dodecamethylene diamine, 1,4-diaminocyclohexane, 1,4-bis-aminomethyl-cyclohexane, "isophorone” diamine, 4,4'-diamino-dicyclohexylmethane, 2,2-bis (4-amino-cyclohexyl) propane or m- or p-xylylenediamine. 4,4'-Diamino-3,3'-dimethyl-dicyclohexylmethane is particularly preferred.
  • Components (I) and (II) are preferably used in amounts such that the molar ratio of blocked isocyanate groups to hydroxyl and / or amino groups is 0.5 to 2, preferably 0.8 to 1.5.
  • dimethylolpropionic acid is preferably used in the preparation of the polyurethanes (4).
  • the organic binders suitable for the aqueous dispersions to be used according to the invention are preferably selected so that they are at least temporarily sticky. In other words, you should Have the property of binding them to their surface under practical conditions when they collide with the abrasive used as "sand" and the particle blasted off the substrate.
  • a droplet of binder would be completely surrounded by dust particles.
  • Tertiary aines preferred for neutralizing the carboxyl groups of the organic binders include, for example, triethyl, tripropyl and tributylamine, methyldiethanolamine, dimethylethanolamine, triethanolamine, methyldipropanolamine, dimethylpropanolamine, tripropanolamine, N, N-dimethylaniline. Tripropylamine and dimethylethanolamine are particularly preferred amines.
  • the water content of the aqueous dispersions to be used according to the invention is 60 to 95, preferably 85 to 93,% by weight, based on the aqueous dispersion.
  • the dispersions to be used according to the invention are preferably introduced in countercurrent to the blasting material, so that an optimal distribution is ensured and they reach the surface to be blasted with the blasting material in the finest distribution.
  • Salt spray test Condensation test ⁇ 190 x 106 mm Salt dissolving station 330 x 165 mm.
  • 256 g of precondensate from 0.077 mol of soybean oil fatty acid, 0.43 mol of trimethylolpropane, 0.87 mol of 1,6-hexanediol, 0.5 mol of adipic acid and 0.5 mol of isophthalic acid are mixed with 21.7 g of dimethylolpropionic acid, 72 g of isophorone diisocyanate, 52.5 g N-methylpyrrolidone, 10.3 g dimethylethanolamine and water processed to an aqueous dispersion with a solids content of 7 wt .-%.
  • the resulting dust consisting of rust and old coating, was irreversibly bound together with the blasting slag.
  • the material could be swept up and removed with the broom without raising dust.
  • test panels were coated according to the following criteria:
  • the subsequent coatings were applied every 24 hours.
  • the paints were applied in such a way that the behavior of the coatings on one, two and three layers can be assessed.
  • the paints were processed by spray application.
  • Salt spray test As test criteria were Salt spray test, DIN 53 167 -Condensation test, DIN 50 017 / KK -Storage at the salt dissolving station fixed.
  • the salt dissolving station is part of the production plant for chlor-alkali electrolysis with a very aggressive atmosphere related to the corrosion of steel. The exposure of the plates in salty, humid air makes it possible to test the behavior of paints under harsher conditions in practice.
  • Cover coat B3 / 1-2 B1 / 1-2 B1 / 1-2 B3 / 1-2 Primer / 1. Deck coat. Cover coat Wd 3 Wd 4, B1 / 1-2 Wd 0 Wd 7 Surface rust in primer 5 4th 1 5 Condensation test after 42 days if Rust breakthroughs in the primer if Rust breakthroughs in the primer Primer if if if B1 / 1 Primer / 1. Cover coat if if if Ri 0.5 Primer / 1. Deck coat. Cover coat if if if B2 / 1 Salt dissolving station after 6 months (with cut according to DIN 53 167) Primer Wd 4 Wd 3 Wd 1 Wd 4 Primer / 1. Cover coat Wd 3 if if Wd 2 Primer / 1. Deck coat. Cover coat Wd 5 Wd 3 Wd 2 Wd 5 oB without finding
  • the table above shows that the invention leads to at least the same coating quality as the prior art (the advantage being the problem-free removal of rust, old coating and blasting agent).
  • a comparison of the last two columns in the table shows the corrosion protection surprisingly obtained by the binder used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paints Or Removers (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Prevention Of Fouling (AREA)
  • Processing Of Solid Wastes (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Sealing Material Composition (AREA)
  • Special Spraying Apparatus (AREA)
  • Toys (AREA)
EP88114106A 1987-09-10 1988-08-30 Utilisation de dispersions aqueuses pour le décapage à air comprimé Expired - Lifetime EP0306801B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88114106T ATE75438T1 (de) 1987-09-10 1988-08-30 Verwendung waessriger dispersionen fuer das druckluftstrahlen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873730320 DE3730320A1 (de) 1987-09-10 1987-09-10 Verwendung waessriger dispersionen fuer das druckluftstrahlen
DE3730320 1987-09-10

Publications (3)

Publication Number Publication Date
EP0306801A2 true EP0306801A2 (fr) 1989-03-15
EP0306801A3 EP0306801A3 (en) 1990-10-24
EP0306801B1 EP0306801B1 (fr) 1992-04-29

Family

ID=6335651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114106A Expired - Lifetime EP0306801B1 (fr) 1987-09-10 1988-08-30 Utilisation de dispersions aqueuses pour le décapage à air comprimé

Country Status (4)

Country Link
EP (1) EP0306801B1 (fr)
AT (1) ATE75438T1 (fr)
DE (2) DE3730320A1 (fr)
ES (1) ES2036637T3 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460296A (en) * 1966-10-24 1969-08-12 Xerox Corp Metalworking
DE2724318C2 (de) * 1977-05-28 1984-09-20 Ernst Peiniger GmbH Unternehmen für Bautenschutz, 4300 Essen Verfahren zum Befeuchten des Strahlmittels beim Druckluftstrahlen
DE3127035A1 (de) * 1981-07-09 1983-01-27 Ernst Peiniger GmbH Unternehmen für Bautenschutz, 4300 Essen "verfahren zum druckluftstrahlen"
DE3415174A1 (de) * 1984-04-21 1985-10-31 Ernst Peiniger GmbH Unternehmen für Bautenschutz, 4300 Essen Verfahren zum druckluftstrahlen
GB8425539D0 (en) * 1984-10-10 1984-11-14 Brent Chemicals Int Abrading surfaces

Also Published As

Publication number Publication date
ES2036637T3 (es) 1996-07-16
ATE75438T1 (de) 1992-05-15
EP0306801A3 (en) 1990-10-24
EP0306801B1 (fr) 1992-04-29
DE3870554D1 (de) 1992-06-04
DE3730320A1 (de) 1989-03-30

Similar Documents

Publication Publication Date Title
EP0036975B1 (fr) Procédé de fabrication de vernissages à effet métallique et objets plans présentant des vernissages multi-couches à effet métallique résistant aux intempéries
EP0330139B1 (fr) Utilisation d'un matériau de revêtement pour préparer des revêtements anti-impacts et/ou des couches de mastic
EP2614097B1 (fr) Compositions de revêtement de protection contre l'érosion
EP3402852B1 (fr) Produits de réaction à base de polyéther à fonction carboxy et apprêt en base aqueuse contenant les produits de réaction
EP0494219B1 (fr) Mastic universel
DE2161848A1 (de) Verfahren zur gleichzeitigen Reinigung mittels Strahlbehandlung und zum Aufbringen eines gegen Korrosion schützenden Metalls bei Metalloberflächen sowie zur Durchführung des Verfahrens geeignete Schleifmittelzusammensetzung
DE19736083A1 (de) Mehrschichtlackierungen und Verfahren zu deren Herstellung
DE3540063A1 (de) Verfahren zum beschichten von kraftfahrzeug-karosserien
EP3286272B1 (fr) Système de revêtement, son utilisation pour revêtir des pièces et pièces ainsi revêtues pour des machines agricoles et des engins de chantier
EP1085065A2 (fr) Système de revêtement élastique contenant des uréthane-(meth)acrylates à groupes isocyanate et réticulables par les UV et son utilisation
DE3504228A1 (de) Antikorrosive polyurethan-ueberzugs- bzw. -beschichtungszusammensetzung
EP1237979A1 (fr) Coulis pulverulent et procede de production d'une peinture multicouche chromophore et/ou donnant un effet sur un substrat avec ou sans couche de fond
DE2815311C2 (de) Verfahren zur Reinigung und Korrosionsverhütung einer Metalloberfläche und Schleifmittel
DE3540064C2 (fr)
EP2598582B1 (fr) Procédé de revêtement anticorrosion de surfaces métalliques utilisant du polyester contenant du phosphore
EP0158099B1 (fr) Procédé pour préparer des dispersions aqueuses et leur utilisation dans la préparation de peintures métallisées
EP1556450A1 (fr) Resines epoxy aqueuses stabilisees de facon non ionique
DE102010032786A1 (de) Verfahren zur korrosionshemmenden Beschichtung von Metalloberflächen unter Verwendung phosphorhaltiger niedermolekularer Verbindungen
DE60105294T2 (de) Verfahren zur beschichtung eines blanken, unbehandelten metallsubstrats
DE3303828C2 (de) Korrosionsschutz-Beschichtungsverfahren
EP0306801B1 (fr) Utilisation de dispersions aqueuses pour le décapage à air comprimé
DE2029898C2 (de) Überzugsmittel für mineralische Baustoffe oder Asphalte
DE102010055780A1 (de) Erosionsschutz-Beschichtungszusammensetzungen
EP0292762A2 (fr) Composition à un composant liquide, sans solvant et durcissable contenant du polyuréthane, de l'huile et du plastifiant, procédé pour leur préparation et leur utilisation
DE3108861C2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19880830

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: B24C 1/00

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB IT LI SE

17Q First examination report despatched

Effective date: 19911007

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI SE

REF Corresponds to:

Ref document number: 75438

Country of ref document: AT

Date of ref document: 19920515

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3870554

Country of ref document: DE

Date of ref document: 19920604

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2036637

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19930728

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940714

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19940727

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19940812

Year of fee payment: 7

Ref country code: AT

Payment date: 19940812

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940822

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19940824

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19940831

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19940831

Year of fee payment: 7

EAL Se: european patent in force in sweden

Ref document number: 88114106.3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19950830

Ref country code: AT

Effective date: 19950830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950831

Ref country code: LI

Effective date: 19950831

Ref country code: CH

Effective date: 19950831

Ref country code: BE

Effective date: 19950831

BERE Be: lapsed

Owner name: BAYER A.G.

Effective date: 19950831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960430

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960501

EUG Se: european patent has lapsed

Ref document number: 88114106.3

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2036637

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050830