WO2011057781A2 - Composition de revêtement pour le revêtement de récipients alimentaires - Google Patents

Composition de revêtement pour le revêtement de récipients alimentaires Download PDF

Info

Publication number
WO2011057781A2
WO2011057781A2 PCT/EP2010/006860 EP2010006860W WO2011057781A2 WO 2011057781 A2 WO2011057781 A2 WO 2011057781A2 EP 2010006860 W EP2010006860 W EP 2010006860W WO 2011057781 A2 WO2011057781 A2 WO 2011057781A2
Authority
WO
WIPO (PCT)
Prior art keywords
hydroxy
coating
composition according
acrylic polymer
groups
Prior art date
Application number
PCT/EP2010/006860
Other languages
English (en)
Other versions
WO2011057781A3 (fr
Inventor
Gian Carlo Cirani
Lino Vitale
Simeone Tavaglini
Ivan Mijatovic
Klaas Moser
Original Assignee
Be.Be. Tech S.R.L.
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 Be.Be. Tech S.R.L. filed Critical Be.Be. Tech S.R.L.
Publication of WO2011057781A2 publication Critical patent/WO2011057781A2/fr
Publication of WO2011057781A3 publication Critical patent/WO2011057781A3/fr

Links

Classifications

    • 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
    • C09D133/062—Copolymers with monomers not covered by C09D133/06
    • C09D133/066—Copolymers with monomers not covered by C09D133/06 containing -OH groups
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/20—Carboxylic acid amides

Definitions

  • the present invention relates to a coating composition for coating food containers .
  • the metal containers are made of aluminium, steel or tinplate (more commonly known as "tin”). Due to the effect of air oxidation and the corrosive action of food products (food and beverages), the metal containers are subject to phenomena of corrosion which can contaminate the product contained in them, altering the organoleptic qualities, or even rendering it unsafe for the customer.
  • the surfaces of the metal containers which come in contact with the food products are generally coated with a film of protective paint which delays its corrosion, and also improves its appearance.
  • the coating of the internal surface is made preferably by utilizing coating compositions in liquid form, as such compositions permit to obtain coatings of higher quality and with less costs with respect to the coating compositions in powder form, applicable by electrophoretic or electrostatic coating.
  • coating compositions in powder form it is in fact necessary to lay coating films definitely thicker than the thickness of the corresponding coatings obtainable by the use of coating compositions in liquid form. This entails, therefore, a greater consumption of coating product and, consequently, higher application costs.
  • the application of coatings on the internal surface of hollow containers presents also technical difficulties which can prevent in fact the possibility of using coating compositions in the powder form in an economically convenient way.
  • the application by means of an electrophoretic or electrostatic painting is based on the creation of an electric field between the object to be coated and the device for the distribution of the coating composition.
  • electrostatic fields are created, able to prevent an appropriate application of the coating on the lower region of the tins, particularly on the bottom. This effect is the more pronounced, the smaller the volume of the containers is.
  • a further disadvantage of the application of coating compositions in powder form consists in that it does not guarantee the high painting speeds required at industrial level (typically over 1500 tins per minute) .
  • the coating composition used for the coating of the metal surfaces contacting foods are compositions comprising bonding resins of the epoxy, phenolic or melamine type.
  • the reason for which the transfer of undesired substances to the food products packed in metal containers occurs, are to be searched mainly in the specific chemical characteristics of the components of the paint and in the imperfect adhesion of the coating film applied on the metal surface.
  • the American Patent US 5,266,628 describes aqueous-based coating compositions for the coating of metal food containers, comprising a bonding resin containing an acrylic polymer and a cross-linking agent containing ?-hydroxy-alkylamides .
  • the coating films obtained with the coating compositions of the aforesaid patent have a high water resistance at high temperature, which makes them suitable for coating the inside of metal containers which must be subjected to sterilization and pasteurization processes.
  • US 5,266,628 in order to obtain a high water stability at high temperature, the quantity of hydroxy- alkylamides in the composition must be chosen in a specific ratio with respect to the quantity of acrylic polymer.
  • the ratio between the quantity of hydroxy groups of the hydroxy-alkylamide and the quantity of carboxylic groups in the polymer must be lower than 0,5:1, preferably lower than 0,4:1, more preferably lower than 0,35:1.
  • the adhesion of the coating film to the metal surface decreases dramatically and the surface becomes easily prone to corrosion .
  • the aim of the present invention is to overcome the problems underlined from the state of the art.
  • a first object of the present invention is a coating composition for coating the surface of a metal container for foods, comprising
  • a bonding resin comprising an acrylic polymer having carboxylic groups
  • the ratio between the hydroxy groups of the ⁇ -hydroxy-alkylamide and the carboxylic groups of the bonding resin is comprised between 0,7:1 and 1,2:1.
  • a second object of the present invention is the use of the aforementioned composition for coating a surface of a metal food container.
  • a third object of the present invention is a metal food container having a surface coated with the aforesaid composition.
  • a further object of the present invention is a coating film applied on a surface of a metal food container.
  • the Applicant has surprisingly found that, by utilizing in suitable stoichiometric ratios a cross- linking agent comprising ?-hydroxy-alkylamides and a bonding resin comprising an acrylic polymer, it is possible to realize coating films characterized by a high adhesiveness and a surprisingly low level of transferring of undesired substances. Therefore, the coating compositions being the object of the present invention are particularly suitable for coating metal surfaces of containers destined to come in contact with food products, like foods and beverages.
  • metal food containers means containers of any kind and dimensions having metal surfaces destined to come in contact with liquid and solid food containers (for example, tins for beverages, containers for canned food, oil tanks, etc . ) .
  • the coating composition which is the object of the present invention is particularly suitable to cover the surface of a metal container of hollow shape, preferably a cylindrical container, more preferably a cylindrical container having a circular or elliptic cross-section.
  • the container has a volume equal or lower than 2 liters, more preferably equal or lower than 1 liter, still more preferably equal or lower than 0,5 1, still more preferably lower or equal to 0,35 1.
  • cross-linking agents based on ?-hydroxy- alkylamides are products known in the state of the art and are commercially available (EMS-CHEMIE AG CH-7013 Domat/Ems ) .
  • A is chosen among
  • a monovalent or polyvalent organic radical derived from a saturated or unsaturated alkylic radical containing from 1 to 60 carbon atoms for example metyl, etyl, propyl, butyl, pentyl, exyl, eptyl, octyl, nonyl, decyl, eicosyl, triacontyl, tetracontyl, pentacontyl, exacontyl;
  • arylic radical with one or two aromatic rings for example, phenyl or naphtyl
  • tri-alkylene-aminic radical for example, tri- metylene-amine or tri-etylene-amine
  • an unsaturated radical containing one or more ethylenic groups for example, etenyl, 1-metil-etenyl, 3-butenil-l, 3-diyl, 2-propenil-l , 2-diyl
  • ethylenic groups for example, etenyl, 1-metil-etenyl, 3-butenil-l, 3-diyl, 2-propenil-l , 2-diyl
  • Ri is hydrogen, an alkyl containing from 1 to 5 carbon atoms (for example, metyl, etyl, n-propyl, n- butyl, sec-butyl, tert-butyl, pentyl) or a hydroxy- alkyl containing from 1 to 5 carbon atoms (for example, hydroxy-etyl, 3-hydroxy-propyl , 2-hydroxy-propyl , 4- hydroxy-butyl, 3-hydroxy-butyl , 2-hydroxy-2-propyl- metyl, 5-hydroxy-pentyl, 4-hydroxy-pentyl , 3-hydroxy- pentyl, 2-hydroxy-pentyl and the pentyl isomers);
  • an alkyl containing from 1 to 5 carbon atoms for example, metyl, etyl, n-propyl, n- butyl, sec-butyl, tert-butyl, pentyl
  • R 2 e R 3 are radicals selected from hydrogen, lower alkyls, linear or branched, containing from 1 to 5 carbon atoms, or one of the radicals R2 and one of the radicals R3 can be combined in order to create, together with the carbon atoms to which they adhere, a cyclo-alkyl (for example, cyclo- pentyl or cyclo-hexyl ) ;
  • n is an integer equal to 1 or 2 and n' is an integer comprised between zero and 2, n being equal to 2 when n' equals zero.
  • preferred /?-hydroxy-alkyl-amides among those of the general aforementioned ⁇ formula (I) are the following:
  • the acrylic polymer comprising carboxylic groups can be prepared for radical polimerization of ethylenically unsaturated monomers.
  • a broad range of acrylic monomers known in the art can be used for the polymerization, among which acrylic acid, methacrylic acid and their esters.
  • Typical acrylic esters are the lower alkyl-esters , among which metyl- (met ) acrylate , etyl (met ) -acrylate, n- butyl- (met ) acrylate and isobutyl- (met ) acrylate.
  • Other acrylic esters include 2-ethyl-exyl- (met ) acrylate and dodecyl-acrylate .
  • esters of the methacrylic acid is to prefer for their greater resistance to hydrolysis.
  • esters of branched alcohols are to prefer.
  • Other monomers can also be used, containing carboxylic groups and having unsaturations, among which crotonic acid, itaconic acid, fumaric acid, maleic acid and citraconic acid.
  • the presence in the polymer of monomers containing acid groups guarantees the compatibility of the coating composition with water, after the neutralization of the polymer with a base (for example, amine).
  • the acid groups are further necessary also for the reactions in which the ⁇ - hydroxy-alkyl-amides are utilized as cross-linking agents .
  • the acrylic polymer in addition to the carboxylic groups, can also contain carbonyl .
  • At least 6% in weight on solid base of the used monomers for obtaining the acrylic polymer must contain acid groups, more preferably from 10% to 30%.
  • N.A. acid number
  • the quantity of acid groups of the acrylic polymers varies from 80 to 180 mg KOH per gram of solid polymer (measured according to the Standard method DIN EN ISO 3682) .
  • N.A. varies from 90 to 150 mg KOH per gram of solid polymer.
  • anydrides can also be utilized, for example maleic anydride.
  • each anydride molecule contributes to the acid number with two acid groups .
  • the acrylic polymer can be obtained through polymerization only of acrylic polymers.
  • the acrylic polymer comprises also vinyl monomers (for example, styrene or vinyl-toluene) co-polymerized with the acrylic monomers.
  • monomers containing hydroxy groups can be introduced, as for example hydroxy-ethyl (met ) acrylate, hydroxy-propyl
  • (met) acrylate a reaction product between (met) acrylic acid and glycidyl ester of the versatic acids.
  • the polymerization reaction of the monomers for producing the acrylic polymers requires, generally, the presence of a radical initiator.
  • initiators of free radicals are azoic compounds like 2 , 2 1 -azobis- ( 2-metyl- iso-butyrro-nitryl ) ; peroxy-esters , like t-butyl- peroxy-acetate, t-butyl-peroctoate, amyl-peroctoate, amyl-t-peracetate, and t-butyl-perbenzoate ; alkyl- hydro-peroxides , like t-butyl-hydro-peroxyd; diacil- peroxydes, like dibenzoyl-peroxyd, and dialkyl- peroxyds, like di-t-butyl-peroxyd and dicumyl-peroxyd.
  • the synthesis of the acrylic polymers can be made in any organic solvent in which the monomers and the polymers are soluble.
  • solvents which can be utilized there are ethers, like 2-butoxy- ethanol, dipropylene-glycol mono-etyl-ether , 1-metoxy- 2-propanol, and alcohols, like butanol, isopropylic alcohol and/or their mixtures.
  • the polymerization can also be made in an emulsion or in suspension in the absence of solvents according to known techniques.
  • the acid groups present on the polymer can be neutralized with a base, for example amine, in order to make the polymer water- soluble.
  • a base for example amine
  • the base is chosen among compounds which are volatile at the temperature at which the cross-linking is made, in order that the base does not remain on the cross-linked film.
  • the polymer can be reduced with water and mixed with the ?-hydroxy-alkyl-amide and, possibly, with additives (for example, anti-foam agents, slipping agents, polyvalent metal complexes like for example zinc or zirconium, etc.) useful, according to the known art, for the improvement of some chemical-physic and applicability characteristics.
  • additives for example, anti-foam agents, slipping agents, polyvalent metal complexes like for example zinc or zirconium, etc.
  • the compositions can contain also pigments in function of the specific application expected for the composition.
  • the coating composition which is the object of the present invention can also comprise blocked compounds of the isocyanate type or adipic di- hydrazide acid (DAH) able to improve the mechanical characteristics of the paint film.
  • DASH adipic di- hydrazide acid
  • the coating composition comprises preferably also the compound DAH.
  • the relative quantities of ?-hydroxy-alkyl-amide and of acrylic polymers in the coating composition are determined by the ratio (R) between the quantity of the hydroxy groups present in the cross-linking agent and the quantity of carboxylic groups present in the acrylic polymer.
  • R must be comprised between 0,7:1 and 1,2:1, i.e. in the coating composition from 0,7 to 1,2 hydroxy groups of the cross-linking agent must be present for every carboxylic group of the polymer.
  • R is comprised between 0,8:1 and 1:1, as the coating films obtained with these compositions have the highest degree of cross-linking with consequent advantages on the resistance characteristics towards the aggression of water and other substances present in food products like acids, alcohols, salts.
  • the reduced permeability of the paint film due to the high degree of cross-linking, reduces also the probability of transfer of substances from the coating film to the food products.
  • the coating compositions which are the object of the present invention are preferably formulated in a liquid form, typically as an aqueous dispersion, and can be applied on the metal surfaces of the food containers with the methods and the apparatuses conventionally utilized for the application of the water coating products containing epoxy-acrylic- phenolic resins.
  • the application of protective films on the metal surfaces of food containers is generally made by spraying, rolling or by means of electrophoresys .
  • the application is made by spraying in order to avoid the application problems typically encountered in the state of the art for the coating compositions in powder form.
  • the protective film applied can have any desired thickness.
  • the surfaces of the metal food containers are coated with films having a thickness lower than 0, 025 mm, more preferably lower than 0,013 mm, still more preferably lower than 0,005 mm.
  • the cross-linking of the coating compositions which are the object of the present invention is mainly obtained by submitting the film applied to the surface to heating at a temperature comprised between 125°C and 400°C, for a duration variable from 30 minutes to 2 seconds, preferably between 150°C and 250°C for durations between 30 minutes and 1 minute.
  • the protective films realized on the metal surfaces with the coating compositions which are the object of the present invention are characterized also by a good flexibility.
  • Heating is made at 145°C at the same time providing to charge, within 3 hours, all the mixture 1) and 85% of the mixture 2) :
  • the resin obtained has a solid residue of 60% in weight, an acidity, expressed as acid number, of 136 mg KOH/g of solid and a viscosity of 14000 mPa-s.
  • the glass transition temperature (Tg) calculated is 10°C.
  • a first series of coating composition was prepared (series 1) containing the dispersion in water of the neutralized acrylic resin of the example 2 and a cross- linking agent made by bis [N,N-di ( ⁇ -hydroxy- ethyl) ] adipamide (PRIMID® XL-552 of the Company EMS) .
  • the cross-linking agent was dissolved in water (25% in weight) before being mixed with the resin.
  • the samples have been prepared by mixing the acrylic resin and the cross-linking agent in such relative quantities in order to have a ratio R among hydroxy groups of the ⁇ - hydroxy-alkyl-amide and carboxylic groups of the acrylic resin variable from 0,2 to 2 (Table 1) .
  • Table 1 Coating compositions (series 1)
  • a second series of coating compositions (series 2) has been prepared by mixing the same dispersion of acrylic resin of the first series with a cross-linking agent made by bis [N, -di ( ⁇ -hydroxy-propyl- adipamide) (PRIMID® QM-1260) .
  • the cross-linking agent has been dissolved in water (27,54% in weight) before being mixed with the resin.
  • the samples of this series have been prepared by mixing the acrylic resin and the cross-linking agent in such relative quantities to have a ratio R among hydroxyl groups of the ⁇ - hydroxy-alkyl-amide and carboxylic groups of the acrylic resin variable from 0,2 to 2 (Table 2) .
  • Quantities expressed in grams The two series of coating compositions have been applied with a film-stretcher on a metal support made of a plane panel of phosphor-chromed aluminium or of tinplate .
  • the support coated with the coating support has been made cross-linked through heating at 204°C for 3 minutes.
  • the applied film had a thickness variable from 0,0023 to 0,0027 mm.
  • Table 5 shows the data regarding the coating compositions of the series 1 (PRIMID® XL-552), whereas Table 6 those regarding the coating compositions of the series 2 (PRIMID® QM-1260) . Both series of tests are referred to applications on plane panels of phosphor-chromed aluminium.
  • the evaluation criterion of the resistance to the chemical aggression is the same used for the sterilization tests in water.
  • the coating compositions tested are those of the series 2. The results of the tests are reported in Tables 7 and 8. Table 7 . Sterilization test in "LAS solution" made on the coating compositions of the series 2
  • the “L-85 solution” has the following composition:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

La présente invention porte sur une composition de revêtement pour le revêtement de la surface d'un récipient alimentaire métallique comprenant a) une résine liante comprenant un polymère acrylique ayant des groupes carboxyliques et b) un agent de réticulation comprenant un β-hydroxyalkylamide, caractérisée en ce que le rapport entre les groupes hydroxy du β-hydroxyalkylamide et les groupes carboxyliques de la résine liante est compris entre 0,7:1 et 1,2:1. La composition de revêtement susmentionnée est particulièrement appropriée pour le revêtement de surfaces métalliques de récipients pour l'emballage de produits alimentaires, comme des aliments et des boissons.
PCT/EP2010/006860 2009-11-13 2010-11-11 Composition de revêtement pour le revêtement de récipients alimentaires WO2011057781A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2009A000872 2009-11-13
IT000872A ITTO20090872A1 (it) 2009-11-13 2009-11-13 Composizione verniciante per il rivestimento di contenitori alimentari

Publications (2)

Publication Number Publication Date
WO2011057781A2 true WO2011057781A2 (fr) 2011-05-19
WO2011057781A3 WO2011057781A3 (fr) 2011-09-15

Family

ID=42027688

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/006860 WO2011057781A2 (fr) 2009-11-13 2010-11-11 Composition de revêtement pour le revêtement de récipients alimentaires

Country Status (2)

Country Link
IT (1) ITTO20090872A1 (fr)
WO (1) WO2011057781A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015196812A (ja) * 2014-04-03 2015-11-09 東洋インキＳｃホールディングス株式会社 熱硬化性組成物および缶用塗料組成物
US20180291227A1 (en) * 2015-05-29 2018-10-11 Ppg Industries Ohio, Inc. Curable Coating Composition and Packaging Coated with the Same
CN109844016A (zh) * 2016-10-19 2019-06-04 宣伟投资管理有限公司 丙烯酸类聚合物和含有所述聚合物的组合物
WO2022248376A1 (fr) * 2021-05-27 2022-12-01 Basf Coatings Gmbh Compositions de revêtement à base d'hydroxyalkylamide
US11725067B2 (en) 2014-12-24 2023-08-15 Swimc Llc Styrene-free coating compositions for packaging articles such as food and beverage containers
US11981822B2 (en) 2022-11-01 2024-05-14 Swimc Llc Crosslinked coating compositions for packaging articles such as food and beverage containers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5266628A (en) 1992-03-31 1993-11-30 Ppg Industries, Inc. Water based coating composition with improved process resistance

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9824818D0 (en) * 1998-11-12 1999-01-06 Zeneca Ltd Composition,process and use
WO2002050201A1 (fr) * 2000-12-21 2002-06-27 Ucb, S.A. Composition thermodurcissable en poudre pour revetements
US20080114132A1 (en) * 2006-11-15 2008-05-15 Daly Andrew T Powder compositions comprising beta-hydroxyalkyl amides from the ring-opening of acidic compounds
US20090186973A1 (en) * 2008-01-17 2009-07-23 Dsm Ip Assets B.V. Heat curable powder coating composition
WO2009090234A1 (fr) * 2008-01-17 2009-07-23 Dsm Ip Assets B.V. Composition de revêtement pulvérulent thermodurcissable

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5266628A (en) 1992-03-31 1993-11-30 Ppg Industries, Inc. Water based coating composition with improved process resistance

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015196812A (ja) * 2014-04-03 2015-11-09 東洋インキＳｃホールディングス株式会社 熱硬化性組成物および缶用塗料組成物
US11725067B2 (en) 2014-12-24 2023-08-15 Swimc Llc Styrene-free coating compositions for packaging articles such as food and beverage containers
US20180291227A1 (en) * 2015-05-29 2018-10-11 Ppg Industries Ohio, Inc. Curable Coating Composition and Packaging Coated with the Same
EP3303490B1 (fr) 2015-05-29 2019-09-11 PPG Industries Ohio, Inc. Emballage revêtu d'un polymère de latex polymérisé en émulsion
CN109844016A (zh) * 2016-10-19 2019-06-04 宣伟投资管理有限公司 丙烯酸类聚合物和含有所述聚合物的组合物
CN109844016B (zh) * 2016-10-19 2021-08-10 宣伟投资管理有限公司 丙烯酸类聚合物和含有所述聚合物的组合物
EP3697859A4 (fr) * 2016-10-19 2021-08-18 Swimc Llc Polymères acryliques et compositions contenant de tels polymères
US11602768B2 (en) 2016-10-19 2023-03-14 Swimc, Llc Acrylic polymers and compositions containing such polymers
US11717852B2 (en) 2016-10-19 2023-08-08 Swimc Llc Alkali-soluble resin additives and coating compositions including such additives
WO2022248376A1 (fr) * 2021-05-27 2022-12-01 Basf Coatings Gmbh Compositions de revêtement à base d'hydroxyalkylamide
US11981822B2 (en) 2022-11-01 2024-05-14 Swimc Llc Crosslinked coating compositions for packaging articles such as food and beverage containers

Also Published As

Publication number Publication date
WO2011057781A3 (fr) 2011-09-15
ITTO20090872A1 (it) 2011-05-14

Similar Documents

Publication Publication Date Title
US8927652B2 (en) Coating compositions for food and beverage containers
EP0784655B1 (fr) Composition de revetement aqueuse
US20080085965A1 (en) Thermosetting Powder Coating Composition
EP3529317A1 (fr) Additifs de résine soluble dans les alcalis et compositions de revêtement comprenant de tels additifs
WO2011057781A2 (fr) Composition de revêtement pour le revêtement de récipients alimentaires
MXPA97002371A (en) Acu coating composition
EP3033397B1 (fr) Composition de revêtement à base aqueuse contenant un composant oléorésineux
EP0526991B1 (fr) Composition de revêtement aqueuse
US10174212B2 (en) Method for producing a pigment paste, aqueous electrocoat material, use thereof, method for cataphoretic electrocoating, and coated article
JPS6336355B2 (fr)
JP2002121470A (ja) 水性塗料組成物及びこの塗料組成物を塗装した塗装物品
CN103980407A (zh) 水性含磷含硅丙烯酸树脂以及直接在锈层上涂装的涂料
JPH04366124A (ja) エポキシ樹脂組成物
JP2004155835A (ja) 水性塗料組成物及びアルコール飲料用缶
WO1996006894A1 (fr) Composition aqueuse de resine pour des revetements sur des recipients metalliques
JPH0459330B2 (fr)
JP2000109750A (ja) 缶内面用水性被覆組成物
AU2006302532A1 (en) Methods for electrocoating full panel easy open ends
JP4443002B2 (ja) 水性被覆組成物
KR100771788B1 (ko) 수성 피복 조성물
WO2019118482A1 (fr) Procédé de fabrication de polymères hydrodispersables et dispersés dans l'eau
JPH0834830A (ja) リン酸変性エポキシ樹脂組成物及びそれを用いた水系塗料組成物
CN117925036A (zh) 一种用于二片罐的涂料组合物及其制备方法和应用
JPH07138522A (ja) 水性塗料組成物およびそれを用いた金属板
JPH0892500A (ja) 水性塗料組成物

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10781434

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct app. not ent. europ. phase

Ref document number: 10781434

Country of ref document: EP

Kind code of ref document: A2