EP0883656A1 - Dispersion non aqueuse stabilisee steriquement et materiau de revetement a base de celle-ci - Google Patents

Dispersion non aqueuse stabilisee steriquement et materiau de revetement a base de celle-ci

Info

Publication number
EP0883656A1
EP0883656A1 EP97903349A EP97903349A EP0883656A1 EP 0883656 A1 EP0883656 A1 EP 0883656A1 EP 97903349 A EP97903349 A EP 97903349A EP 97903349 A EP97903349 A EP 97903349A EP 0883656 A1 EP0883656 A1 EP 0883656A1
Authority
EP
European Patent Office
Prior art keywords
component
aqueous dispersion
epoxy
formula
epoxy resin
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Withdrawn
Application number
EP97903349A
Other languages
German (de)
English (en)
Inventor
Lazaros Vogdanis
Arno Schmitz
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.)
PPG Industries Ohio Inc
Original Assignee
PPG Industries Inc
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 PPG Industries Inc filed Critical PPG Industries Inc
Publication of EP0883656A1 publication Critical patent/EP0883656A1/fr
Withdrawn legal-status Critical Current

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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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/02—Polycondensates containing more than one epoxy group per molecule
    • C08G59/04—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof
    • C08G59/06—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols
    • C08G59/066—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols with chain extension or advancing agents

Definitions

  • the present application relates to a sterically stabilized, non-aqueous dispersion and a coating agent based on this dispersion.
  • the present application also relates to a process for the preparation of the dispersion mentioned, the coating composition and its use for the coating of packaging.
  • lacquer layer acts as a protective layer, on the one hand to protect the metal against attack by the filling material and the resulting corrosion, and on the other hand to prevent the filling material from being influenced by corrosion products of the metal.
  • the lacquer layer itself for example by detached lacquer components, must not influence or impair the contents, neither in the case of food packaging after filling performed sterilization of the contents during the subsequent storage of the packed goods.
  • the lacquers must be constructed in such a way that they withstand the mechanical stresses which arise during the further processing of the coated metal sheets into cans, for example during the shaping, stamping, flanging and beading of the metal sheets.
  • the so-called gold lacquers based on one or more epoxy resins and one or more phenolic resins are used as internal protective coatings for sheet metal packaging.
  • EP-A-321 088 discloses a process for producing a sterically stabilized, non-aqueous dispersion of a polyepoxide, in which polybutadiene is used as the dispersion stabilizer.
  • a disadvantage of this method is the limited production of dispersions with a defined structure. The need for improvement in this process is the incorporation of additional resins.
  • various properties of the coatings produced using the dispersions such as flexibility, porosity and resistance to acidic test solutions, such as 1% lactic acid or 3% acetic acid, are in need of improvement.
  • the layer thicknesses of the applied coating agent are too high. Adequate sterilization resistance and freedom from pores, especially in acidic media can only be achieved with at least 7-8 g / m 2 , while the requirements for can coating today are less than 5 g / m 2 .
  • German patent application P 44 23 309.4 a process for the production of a sterically stabilized, non-aqueous dispersion of a polyepoxy resin and its use in coating compositions for the interior coating of packaging are known.
  • the addition of phenolic resins to the coating compositions is not described in this application.
  • German patent application P 44 41 684 discloses a coating agent based on a sterically stabilized, non-aqueous dispersion and phenolic resins.
  • Polybutadiene serves as the dispersion stabilizer.
  • the same disadvantages occur here as with the product according to EP-A-321088.
  • the present invention is therefore based on the object of a coating composition
  • a coating composition comprising a) a sterically stabilized, non-aqueous dispersion which can be prepared by at least one epoxy resin (A) with an average of at least 2 epoxy groups per molecule in an organic solvent in the presence of a dispersion stabilizer with at least one diol (B) of the formula HOROH (I), in which R is a group of the formula -Ph-D- Ph- (II), in which - Ph- is a phenylene and D is a methylene or a propylene group, and optionally reacted with a further component (C) which has groups which are reactive toward epoxy or hydroxyl groups, and b) the coating agent contains at least one crosslinking agent.
  • the coating composition should have as high a solids content as possible and the requirements that are usually imposed on the interior painting of cans coating agents used are met. These coating compositions should therefore have, for example, good application properties and ensure good adhesion, good flexibility and good sterilization resistance and freedom from pores in the resulting coatings. In addition, the coating agent should be simple and inexpensive to manufacture.
  • a coating agent which is characterized in that the compound (I) is in the form of a non-aqueous dispersion which is sterically stabilized by a stabilizer which contains isoprene or a component derived from polyisoprene.
  • the present application also relates to a process for the preparation of the coating compositions based on a sterically stabilized, non-aqueous dispersion which can be prepared by at least one epoxy resin (A) with an average of at least 2 epoxy groups in an organic solvent in the presence of a dispersion stabilizer per molecule with at least one diol (B) of the formula HOROH (I), in which R is a group of the formula -Ph-D-Ph- (II), in which - Ph- is a phenylene and D is a methylene or a propylene group and, if appropriate, is reacted with a further component (C) which has groups which are reactive toward epoxy or hydroxyl groups, and the coating composition contains at least one crosslinking agent.
  • This process is characterized in that the reaction of the diol (B) and possibly component (C) with the epoxy resin component (A) in A steric dispersion stabilizer is present, which comprises isoprene or a component derived from polyisoprene.
  • the invention further relates to a sterically stabilized, non-aqueous dispersion which can be prepared by at least one epoxy resin (A) with an average of at least 2 epoxy groups per molecule with at least one diol (B) of the formula HOROH in an organic solvent in the presence of a dispersion stabilizer (I) in which R is a group of the formula -Ph-D- Ph- (II), in which - Ph- is a phenylene and D is a methylene or a propylene group, and optionally with a further component (C) which has groups reactive towards epoxy or hydroxyl groups is reacted, characterized in that the compound (I) is in the form of a non-aqueous dispersion which is sterically stabilized by a stabilizer which contains isoprene or a component derived from polyisoprene.
  • the invention accordingly also relates to a process for the preparation of a sterically stabilized, non-aqueous dispersion which can be prepared by at least one epoxy resin (A) with an average of at least 2 epoxy groups per molecule with at least one diol in an organic solvent in the presence of a dispersion stabilizer (B) of the formula HOROH (I), in which R is a group of the formula -Ph-D-Ph- (II), in which - Ph- is a phenylene and D is a methylene or a propylene group, and optionally with a further component (C) which has groups which are reactive toward epoxy or hydroxyl groups is reacted, characterized in that the reaction of the diol (B) and possibly component (C) with the epoxy resin component (A) in the presence of a steric Dispersion stabilizer takes place, which contains isoprene or a component derived from polyisoprene.
  • a dispersion stabilizer B of the formula HOROH (
  • the sterically stabilized, non-aqueous dispersion is preferably prepared in a one-step process.
  • the dispersion can also be produced in a two-stage process.
  • the epoxy resin component (A) with at least one diol (B) and optionally component (C) is converted into a reaction product containing phenolic hydroxyl groups as end groups with a phenoxy equivalent weight of at least 246, preferably at least 642, particularly preferably of 642 to 26,500.
  • the amounts of epoxy resin component (A) and diol (B) are preferably chosen so that 1 equivalent of epoxy resin component (A) is reacted with 3 to 1.001 equivalents, preferably 1.5 to 1.01 equivalents, of at least one diol (B), up to 100% by weight of component (B) can be replaced by component (C). 0 to 20% by weight of component (C) is preferably present in component (B).
  • the reaction of the epoxy resin component (A) with the diol (s) (B) and optionally (C) in the first stage of the process preferably takes place in that the epoxy resin (s), the diol (s) and (C) optionally Dispersion stabilizer and the solvent are combined and slowly heated with stirring. It is preferably heated to temperatures between 80 and 140 ° C. At this slightly elevated temperature, it is preferred to disperse for some time first. Thereafter, the catalyst is added if necessary and heated to the desired reaction temperature.
  • the reaction of the epoxy resin with the diol and possibly (C) usually takes place at a temperature between 120 and 250 ° C., preferably at a temperature between 160 and 180 ° C.
  • the first stage of the process it is also possible to initially introduce the epoxy resin component (A) with the solvent and the dispersion stabilizer and to disperse the epoxy resin component by stirring and, if appropriate, gentle heating, preferably to temperatures between 80 and 140 ° C.
  • the dispersion can then be heated to the desired reaction temperature and the diol (B) and optionally (C) added.
  • a second stage 50 to 100, preferably 80 to 100% of the phenolic hydroxyl groups contained in the reaction product obtained in stage (1) are then reacted with further epoxy resin component (A) and / or component (C).
  • 50 to 100, preferably 80 to 100% of the phenolic hydroxyl groups contained in the reaction product obtained in stage (1) are preferably reacted with further epoxy resin component (A).
  • the reaction with the epoxy resin component and / or possibly further modifying components (C) is preferably carried out by slowly adding the epoxy resin and possibly the further modifying components slowly at an elevated temperature, preferably at a temperature of 60 to 120 ° C. It is also possible to add the epoxy resin component in step (2) of the process all at once. After the end of the epoxy resin addition or addition of the modifying components, catalyst is preferably added again and the temperature is increased, preferably to values between 160 and 180 ° C. Then the reaction is continued until the desired degree of conversion is reached.
  • the invention is directed to use for coating packaging.
  • the coating compositions produced using the new dispersion stabilizer have good application properties despite a very high solids content and at the same time also meet the other requirements which are normally placed on coating compositions for the interior coating of packaging.
  • the coatings produced from the coating compositions according to the invention have good adhesion and good flexibility, good resistance to sterilization and freedom from pores.
  • these coating compositions can be used to produce films with a lower layer thickness than those produced using polybutadiene dispersion stabilizers in accordance with EP-A-321088, and are resistant to sterilization and non-porous. This can easily be achieved with layer thicknesses of ⁇ 5 g / m 2 .
  • the coating compositions are simple and inexpensive to produce.
  • the coatings have a high degree of non-pores.
  • Epoxy resins (A) suitable for producing the non-aqueous dispersion of the polyepoxide used according to the invention are epoxides with an average of at least 2 epoxy groups per molecule. Epoxy resins which are liquid at room temperature are preferably used as component (A). Epoxy resins with a
  • Aromatic epoxy resins (A) are particularly suitable for use, but aliphatic and araliphatic epoxy resins (A) are also suitable. As
  • Examples are diglycidyl ethers of polyphenols, diglycidyl ethers of
  • Bisphenol A and epoxidized novolak resins, particularly preferably epoxy resins based on bisphenol A, are used. Mixtures of different epoxy resins can of course also be used. Furthermore, it is also possible - provided that there are two stages - in the
  • Stage (1) and stage (2) use different epoxy resins (A).
  • Suitable epoxy resins (A) are, for example, the products commercially available under the following names Bisphenol A base:
  • the polyepoxides of the formula (4) are also suitable.
  • B is a group of the formula (2) and A is hydrogen or a group of the formula (6),
  • n 1 to 4 and A 2 is a group of the formula (7),
  • n has the same meaning as in formula (6), or A 1 represents hydrogen or a group of formula (9),
  • D is a methylene group or a propane-2,2-diyl group and b is 0 to 2, and A 2 is a group of the formula (13), -CH (13)
  • a 1 is hydrogen or a group of the formula (12), A 2 is a group of the formula (13) and D is the group propane-2,2-diyl and b is 0.1 to 1. Furthermore A 1 can be hydrogen or a group of the formula (6), A 2 can be a group of the formula (7) and n can be 4.
  • the compound having at least two epoxy groups is preferably an epoxy novolak compound.
  • the epoxy equivalent weight is in the range from 350 to 50 (). () () (), Preferably in the range from 350 to 250,000, very particularly preferably in the range from 350 to 25,000.
  • diols (B) of the formula HOROH (I) are used, in which R is a group of the formula - Ph-D-Ph- (II), in which Ph is a phenylene and D a Is methylene or a propylene group.
  • Bisphenol A is preferably used as diol (B). Possibly. Small amounts, preferably less than 20% by weight, particularly preferably from 1 to 15% by weight, of the diol (B) and / or the epoxy resin component (A) can be replaced by other components (C) which have the epoxy resin component (A) or - if working in two stages - are reacted with the reaction product obtained in stage (1).
  • difunctional compounds are used as component (C).
  • component (C) for the reaction with the epoxy resin.
  • Polyester, polyacrylates, diamines and fatty acid amides can also be used for this. If the two-stage process is used, component (C) is preferably implemented in stage (1).
  • reaction of the diol (B) and possibly the component (C) with the epoxy resin component (A) takes place in the presence of a steric dispersion stabilizer.
  • a steric dispersion stabilizer is a compound having a part associated with the epoxy resin to be stabilized (commonly referred to as an anchor component) and a part associated with the solvent (usually referred to as a solvated component).
  • Suitable dispersion stabilizers are (co) polymers of isoprene or components derived therefrom. Accordingly, too Copolymers of isoprene and butadiene can be used. The stabilizer is preferably present as a solvated component.
  • the proportions of the isoprene are 1 to 99% by weight, preferably 10 to 70% by weight, and those of the polybutadiene 1 to 99% by weight, preferably 30 to 90% by weight.
  • the dispersion stabilizers can be used in such a way that the anchor component is based on an acrylic polymer.
  • Suitable acrylate polymers are homopolymers and copolymers of (meth) acrylic acid alkyl esters (e.g. polymethyl methacrylate,
  • the dispersion stabilizers can be prepared by the methods usually used, for example by reacting the polymer desired as the anchor component with the polymer desired as the solvated component (e.g. derived from the polyisoprene).
  • Solvents which do not dissolve the resulting polyepoxide are used in particular to prepare the non-aqueous dispersion, for example non-polar organic solvents.
  • Aliphatic hydrocarbons which may contain up to 20% by weight of other solvents, for example aromatic hydrocarbons, such as xylene and Solvesso R 150, are preferably used as solvents.
  • High-boiling aliphatic hydrocarbons are preferably used as solvents.
  • suitable solvents are Hydrosol R P 230 EA from Deutsche Hydrocarbures GmbH, Exxold 240 to 270, Norpar R 12 and Isopar R M from Deutsche Exxon Chemical GmbH.
  • the amount of solvent is preferably chosen so that the reaction of the diol (B) with the epoxy resin component (A) (stage (1)) with a dispersion solids content of 20 to 80 wt .-%, preferably from 50 to 70% by weight and the reaction of the reaction product from stage (1) with the diol (B) (stage (2)) at a dispersion solids content of 25 to 85% by weight, preferably 55 to 75% by weight becomes.
  • the reaction of the diol (B) with the epoxy resin component (A) is preferably carried out in the presence of a catalyst.
  • Suitable catalysts are, for example, alkali metal carbonates, such as potassium and sodium carbonate, alkali metal hydroxides, such as sodium and potassium hydroxide, quaternary ammonium salts, amines, such as dibenzylamine, and trialkylphosphonium salts, such as e.g. Triphenylethylphosphonium iodide and triphenylethylphosphonium acetate. Is preferred as a catalyst
  • Triphenylethylphosphonium iodide used.
  • the non-aqueous dispersions obtained in the manner described above are combined with a phenolic resin or a mixture of phenolic resins as crosslinking agents in order to produce the coating compositions according to the invention.
  • Phenolic resins which are preferably used are reaction products of phenol, substituted phenols and bisphenol-A with formaldehyde, which have preferably been prepared under alkaline conditions. Under such conditions, the methylol group is linked to the aromatic ring either ortho or para.
  • Lower alcohols for example ethanol, propanol, butanol and isobutanol, are used as etherification alcohol for the methylolic hydroxyl groups, n-butanol preferably being used as etherification alcohol.
  • Low-viscosity phenolic resins are particularly preferably used to prepare the coating compositions.
  • phenolic resins are used whose 50 to 70% solutions have a viscosity at 20 C of less than 1000 mPas, preferably from 300 to 900 mPas.
  • phenolic resins suitable as crosslinking agents are the products commercially available under the following trade names:
  • Phenodur R resins such as, for example, Phenodur R PR 285 from Hoechst AG
  • Epikure R resins such as Epikure R DX-200-N-60, from Shell Chemicals Bakelite R resins, such as Bakelite R 7576 LB, from Rütgerswerke AG Uravar R resins, such as Uravar R FB 209, from DSM Varcum R resins, such as Varcum R 2890, from Reichold Chemie GmbH.
  • the coating compositions according to the invention can also contain other binders, e.g. Contain epoxy resins, polyester resins, polyacrylate resins or polyurethane resins.
  • binders e.g. Contain epoxy resins, polyester resins, polyacrylate resins or polyurethane resins.
  • the coating compositions according to the invention may also contain further solvents.
  • suitable further solvents are aromatic, aliphatic and cycloaliphatic hydrocarbons, such as, for example, Solventnaphta R , various Solvesso R and Shellsol R types, deasol and various white spirits. These further solvents are used in such an amount that the total solvent content of the coating compositions (ie including the solvent content of the non-aqueous dispersion and possibly of the phenolic resin) is 30 to 50% by weight.
  • the further solvent can be used to set a viscosity which is favorable for the application of the coating compositions and / or to increase the phenolic resins and / or pigments or fillers.
  • Organic and inorganic pigments such as titanium dioxide, iron oxides and diarylides, are also suitable for use in the coating compositions according to the invention.
  • the coating compositions are preferably used unpigmented.
  • coating compositions according to the invention are customarily used fillers, such as, for example, talc, mica, kaolin, chalk, quartz powder, slate powder, barium sulfate, various silicas, silicates and the like.
  • fillers such as, for example, talc, mica, kaolin, chalk, quartz powder, slate powder, barium sulfate, various silicas, silicates and the like.
  • coating compositions which contain no or only transparent fillers are preferred.
  • the coating compositions of the invention can also contain customary auxiliaries and additives, such as e.g. Contain leveling agents, wetting agents, defoamers, PVC-free plasticizers (e.g. adipic acid esters), wax (e.g. polyolefin waxes, carnauba waxes, beeswax, lanolin wax) and crosslinking catalysts (e.g. acid catalysts such as phosphoric acid solutions and p-toluenesulfonic acid solutions).
  • customary auxiliaries and additives such as e.g. Contain leveling agents, wetting agents, defoamers, PVC-free plasticizers (e.g. adipic acid esters), wax (e.g. polyolefin waxes, carnauba waxes, beeswax, lanolin wax) and crosslinking catalysts (e.g. acid catalysts such as phosphoric acid solutions and p-toluene
  • compositions according to the invention preferably contain
  • the coating compositions also contain, if appropriate, further solvents and, if appropriate, further binders, if appropriate pigments and / or fillers and, if appropriate, conventional auxiliaries and additives in customary amounts.
  • the coating compositions according to the invention particularly preferably comprise 0 to 40% by weight of further binders, 30 to 50% by weight of solvent (including the solvent content of the non-aqueous dispersion), 0 to 50% by weight of pigments and / or fillers and 1 to 10% by weight of conventional auxiliaries and additives.
  • the coating compositions are usually prepared by first preparing the non-aqueous dispersion of a polyepoxy resin and then adding the phenolic resin and, if appropriate, solvents, optionally pigments, optionally fillers and, if appropriate, customary auxiliaries and additives, and if necessary by dispersing them the coating agent are processed.
  • the coating compositions are preferably used for coating packaging, in particular for coating food packaging.
  • the packaging can consist of a wide variety of materials and have a wide variety of geometries.
  • the materials in particular black plate, tin plate and various iron alloys, which may be provided with a passivation layer based on nickel, chromium and zinc compounds.
  • the packaging can be in the form of, for example Half-can parts, i.e. hulls and lids, as 3-part cans and as 2-part, stretched deep-drawn or otherwise deep-drawn cans, such as beverages and food cans, are coated.
  • compositions of the invention harden in
  • Object temperature range from 150 to 400 C over a period of 2 s to 15 min. They can be applied by rolling, knife coating, brushing, spraying, flooding or dipping by means of conventional devices, the film then being cured to form a permanent coating.
  • the coating compositions are preferably applied by roller application.
  • feed 1 and feed 2 are metered in simultaneously but separately.
  • the feed 1 is within 90 min. and inlet 2 within 100 min. added.
  • the temperature is kept at 125 ° C. for 1 hour.
  • 4.702 parts of xylene are distilled off under a slight vacuum. Then be
  • the dispersion obtained has a solids content (90 min. 180 ° C.) of 18.4% and an acid number of 22.2 mgKOH / g and a viscosity (ICI plate / cone viscometer, 23 ° C.) of 0.4 dPas .
  • Bisphenol A with an epoxide equivalent of 186 and a molecular weight of 350-380 (commercial product Epikote R 880 from Shell Chemie) 19.321 parts of bisphenol A and 29.333 parts of the dispersion stabilizer described above and
  • the dispersion obtained has a solids content (90 nm in 180 ° C.) of 60.0% and a viscosity (ICI plate / cone viscometer, 23 ° C.) of 1.6 dPas.
  • the dispersion obtained in this way has a storage stability at 23 ° C. of more than 30 days.
  • the components listed in Table 1 are processed into homogeneous coating compositions by stirring.
  • Non-aqueous dispersion of a polyepoxy resin described above 2) Product from Schenectady Europe SA, phenolic resin based on butylphenol and formaldehyde. 3) Epikure R DX-200-N-60 from Shell Chemicals, a commercially available resol-phenol-formaldehyde resin, 60% in n-butanol, with a viscosity / Brookfield) at 25 ° C from 450 - 800 mPas 4) Hydrosol Table 2: Sterilization properties of the coated according to the examples
  • the resistance to sterilization was determined by sterilizing the coated sheets (99 mm) in an autoclave at 129 ° C. for 60 minutes and exposure to water or 3% saline solution (3%
  • test panels were loaded with copper sulfate solution (10% copper sulfate, 10% concentrated hydrochloric acid) during an exposure time of 3 minutes
  • the dispersion obtained has a solids content (90min. 180 ° C.) of 55% and a viscosity (ICI plate / cone viscometer, 23 ° C.) of 1.5 dPas.
  • component C is included with a 100% share:

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Paints Or Removers (AREA)
  • Epoxy Resins (AREA)

Abstract

L'invention concerne un matériau de revêtement contenant a) une dispersion non aqueuse stabilisée stériquement produite par la réaction, dans un solvant organique en présence d'un stabilisant de dispersion, d'au moins une résine époxy (A) contenant une moyenne d'au moins deux groupes époxy par molécule avec au moins un diol (B) de la formule HOROH (I), dans laquelle R est un groupe de la formule -Ph-D-Ph- (II) où Ph- est un groupe phénylène et D un groupe méthylène ou propylène, et éventuellement avec un autre réactif (C) contenant des groupes réagissant avec des groupes époxy ou hydroxy, et b) au moins un agent de réticulation et, éventuellement, des solvants, des pigments, des charges et d'autres adjuvants et additifs, le diol (I) se présentant sous forme de dispersion non aqueuse stabilisée stériquement par un stabilisant renfermant de l'isoprène ou un composé dérivé de polyisoprène.
EP97903349A 1996-02-28 1997-02-21 Dispersion non aqueuse stabilisee steriquement et materiau de revetement a base de celle-ci Withdrawn EP0883656A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19607435A DE19607435A1 (de) 1996-02-28 1996-02-28 Sterisch stabilisierte, nicht-wäßrige Dispersion, und Beschichtungsmittel auf deren Basis
DE19607435 1996-02-28
PCT/EP1997/000833 WO1997031952A1 (fr) 1996-02-28 1997-02-21 Dispersion non aqueuse stabilisee steriquement et materiau de revetement a base de celle-ci

Publications (1)

Publication Number Publication Date
EP0883656A1 true EP0883656A1 (fr) 1998-12-16

Family

ID=7786622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97903349A Withdrawn EP0883656A1 (fr) 1996-02-28 1997-02-21 Dispersion non aqueuse stabilisee steriquement et materiau de revetement a base de celle-ci

Country Status (8)

Country Link
EP (1) EP0883656A1 (fr)
JP (1) JPH11512780A (fr)
CN (1) CN1213392A (fr)
AU (1) AU706657B2 (fr)
CA (1) CA2247140A1 (fr)
DE (1) DE19607435A1 (fr)
TR (1) TR199801711T2 (fr)
WO (1) WO1997031952A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE794765A (nl) * 1972-02-09 1973-07-31 Shell Int Research Werkwijze ter bereiding van oplosbare condensatieprodukten en van met water verdunbare verfbindmiddelen
JPS5891755A (ja) * 1981-11-26 1983-05-31 Sunstar Giken Kk エポキシ樹脂組成物の製法
EP0321088B1 (fr) * 1987-12-04 1994-01-26 Imperial Chemical Industries Plc Procédé pour préparer des dispersions de résines époxyde allongées
DE4423309A1 (de) * 1994-07-02 1996-01-04 Basf Lacke & Farben Verfahren zur Herstellung einer sterisch stabilisierten, nichtwäßrigen Dispersion eines Polyepoxids und diese Dispersion enthaltende Beschichtungsmittel
DE4441684A1 (de) * 1994-11-23 1996-05-30 Basf Lacke & Farben Beschichtungsmittel auf der Basis einer sterisch stabilisierten, nichtwäßrigen Dispersion, Verfahren zu deren Herstellung sowie ihre Verwendung zur Beschichtung von Emallagen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9731952A1 *

Also Published As

Publication number Publication date
CA2247140A1 (fr) 1997-09-04
JPH11512780A (ja) 1999-11-02
DE19607435A1 (de) 1997-09-04
TR199801711T2 (xx) 1998-11-23
AU1793697A (en) 1997-09-16
CN1213392A (zh) 1999-04-07
WO1997031952A1 (fr) 1997-09-04
AU706657B2 (en) 1999-06-17

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