WO1998038248A1 - Procede pour enduire des corps moules avec des masses ou des solutions de resine de polyester - Google Patents

Procede pour enduire des corps moules avec des masses ou des solutions de resine de polyester Download PDF

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Publication number
WO1998038248A1
WO1998038248A1 PCT/EP1998/001024 EP9801024W WO9838248A1 WO 1998038248 A1 WO1998038248 A1 WO 1998038248A1 EP 9801024 W EP9801024 W EP 9801024W WO 9838248 A1 WO9838248 A1 WO 9838248A1
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WO
WIPO (PCT)
Prior art keywords
polyester resin
resin compositions
solutions
compounds
coating
Prior art date
Application number
PCT/EP1998/001024
Other languages
German (de)
English (en)
Inventor
Rainer Blum
Günther HEGEMANN
Manfred Eichhorst
Original Assignee
Basf Coatings Aktiengesellschaft
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 Basf Coatings Aktiengesellschaft filed Critical Basf Coatings Aktiengesellschaft
Priority to BR9807614-0A priority Critical patent/BR9807614A/pt
Priority to CA002282412A priority patent/CA2282412A1/fr
Priority to JP53728598A priority patent/JP2001513830A/ja
Priority to EP98912371A priority patent/EP0963413A1/fr
Publication of WO1998038248A1 publication Critical patent/WO1998038248A1/fr

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Classifications

    • 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
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/52—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
    • C08G63/54—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/553—Acids or hydroxy compounds containing cycloaliphatic rings, e.g. Diels-Alder adducts
    • 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
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
    • 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
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
    • C09D167/07—Unsaturated polyesters having carbon-to-carbon unsaturation having terminal carbon-to-carbon unsaturated bonds

Definitions

  • the invention relates to methods for coating moldings with polyester resin compositions or solutions and the use of polyester resin compositions or solutions as impregnating, casting and coating compositions or impregnating lacquers.
  • Polyester resin compounds are widely used for coating moldings, in particular electronic or electrotechnical components, such as wires or coils.
  • Unsaturated polyesters are generally used in the form of a solution in a copolymerizable monomer, usually styrene. After the moldings or components have been coated with the polyester resin compositions, they are cured by copolymerization with the monomers, in particular styrene.
  • DE-A-32 30 924 describes processes for the preparation of unsaturated polyester resins based on maleic anhydride as the unsaturated acid component, the polyesters obtained having been reacted with dicyclopentadiene and the esterification in the presence of N-hydroxyalkyl imides of monounsaturated cycloaliphatic 1, 2-dicarboxylic acids is carried out.
  • the polyesters are dissolved in styrene.
  • EP-B-0 118 786 and EP-B-0 260 688 describe processes for the production of moldings from unsaturated polyester resins, esters based on maleic anhydride as unsaturated acid and reacted with dicyclopentadiene being dissolved in styrene and subjected to a two-stage curing process Can be hardened using two different radical formers.
  • DE-A-1 570 273 and DE-A-1 720 323 describe unsaturated polyesters which have cyclic imide groups. These polyesters are also used as a solution in styrene.
  • polyesters When the above-described polyesters are used as impregnating resins in copolymerizable monomers, such as acrylates, allyl phthalate, styrene, ⁇ -methylstyrene or methyltoluene or vinyltoluene, these monomers are partially released when the mixtures are used for coating. In known applications of impregnating agents with these substances, mass losses of approximately 20 to 30% occur. These considerable amounts have to be removed from the workplace, since the monomers are often harmful to health and irritating to the skin and thus pose a health risk to those working with these substances. The extracted amounts of monomer are usually disposed of in exhaust air incineration plants, which can lead to undesirable emissions. In addition, the substances lost in this way represent a considerable economic loss.
  • copolymerizable monomers such as acrylates, allyl phthalate, styrene, ⁇ -methylstyrene or methyltoluene or vinyltoluene
  • the object of the present invention is to provide a method for coating shaped articles by soaking in, casting with or coating with polyester resin compositions or solutions, which avoids these disadvantages.
  • this object is achieved by a process for coating moldings by soaking in, casting with or coating with polyester resin compositions or solutions which are essentially free of acrylic, allylic or vinylically unsaturated monomers and contain unsaturated polyesters,
  • unsaturated polyesters or polyester resins can also be cured essentially without the use of the acrylic, allylic or vinylically unsaturated monomers previously considered to be absolutely necessary.
  • solvents can also be dispensed with.
  • the masses are also essentially free of solvents.
  • the expression “essentially” means that there are no amounts of acrylic, allylic or vinylically unsaturated monomers or, if appropriate, solvents which substantially change the properties of the polyester resin compositions or solutions.
  • the amount of acrylic, allylic or vinylically unsaturated monomers is preferably at most 30, particularly preferably at most 10, in particular at most 5% by weight, based on the total weight of the polyester resin compositions.
  • the polyester resin compositions are particularly preferably completely free of acrylic, allylic or vinylically unsaturated monomers.
  • solvent here means those solvents or diluents which do not undergo any chemical reactions with the rest of the polyester resin compositions, particularly during curing. These are compounds that escape or remain in the polyester resin compositions during or after curing without forming chemical bonds with the polymer structure.
  • Monomers or oligomeric compounds which carry functional groups which allow their reaction in the curing of the polyester resin are not included under the term "solvent".
  • the molded articles coated by the process according to the invention are preferably electronic or electrotechnical components or carrier materials for electrical insulators, in particular flat electrical insulators.
  • Examples of such shaped bodies or components are wires and winding goods, such as coils, motor windings, transformer windings, or corresponding components based on foils and other components.
  • Carrier materials for flat insulating materials such as glass silk, mica tapes and other absorbent substances, as well as combinations thereof, can be used as insulators, the hardening of these substances in the B state possibly being interrupted in order to obtain curable prepregs. The hardening is stopped when the prepregs have solidified to such an extent that they are detackified and can be stacked or wound.
  • the polyester resin compositions or solutions used according to the invention are impregnation, casting or coating solutions or compositions.
  • the method according to the invention for coating shaped articles includes the generally known methods of dip impregnation, trickling technology, the dip roller method, the flooding method and the encapsulation for impregnating windings. If appropriate, these methods can be supported by applying reduced pressure and / or pressure. Suitable methods are known to the person skilled in the art.
  • the polyester resin compositions or solutions used according to the invention can be heated in the coating process in order to lower the viscosity and to facilitate their use.
  • the polyester resin compositions or solutions used according to the invention can be processed on known, not or only slightly modified plants.
  • polyester resin compositions or solutions used according to the invention contain unsaturated polyesters.
  • These polyester resins can be built up by known processes for the production of polyesters, generally by polycondensation of polyfunctional hydroxyl compounds with polyfunctional acids or their anhydrides at higher temperatures. It is often advantageous to start from the esters of such substances and to obtain the polyesters by transesterification at higher temperatures, since in some cases such transesterifications are easier and faster than the direct esterification. Multi-functional amines can also be used. The use of monofunctional feedstocks is also possible, for example to regulate the molecular weight. According to the invention, all known polyester resins can be used, provided they contain at least partially unsaturated polyesters.
  • polyesters examples of basic building blocks from which the polyesters can be built are:
  • amide and imide structures is described for example in DE-A-1 570 273 and DE-A-1 720 323.
  • Such polyester amides or polyester imides are used, for example, when there are special requirements with regard to heat resistance.
  • the polyesters used according to the invention can be unsaturated overall.
  • the double bonds are preferably provided by unsaturated dicarboxylic acids or their anhydrides, such as fumaric acid, maleic acid, itaconic acid, citraconic acid or their anhydrides or mixtures thereof.
  • unsaturated polyesters are based on these acids as unsaturated compounds.
  • the polyester resin compositions used can additionally contain saturated polyesters.
  • Saturated polyesters have no C-C double bonds or triple bonds.
  • Aromatic unsaturation and the double bond in the 5-ring of the structures of the formulas (I) and (II) are not regarded as double bonds since they do not participate in a polymerization.
  • saturated acids in such polyesters are phthalic acids in the different isomeric forms.
  • the polyester resin compositions preferably contain not more than 50, particularly preferably not more than 20% by weight of saturated polyesters, based on the total weight of the polyester resin compositions.
  • the polyester resin compositions or solutions preferably contain compounds which have structures of the formula (I)
  • n has a value from 0 to 10.
  • N can have an integer value, but it can also be an average.
  • N preferably has a value from 0 to 7, particularly preferably 0 to 5, in particular 0 to 3.
  • Preferred examples of n are 0, 1, 2.
  • the structures of the formula (I) are based on cyclopentadiene (CPD) or dicyclopentadiene (DCPD) . Methods for producing these structures are known, for example from M.C. Kloetzel; Org. Reactions 4 1 to 59 (1948) or W.M. Carmody; Ind. Eng. Chem. 30 245 to 251 (1938).
  • the structures can have an oxygen atom on the free valence.
  • polyester resin compositions or solutions preferably contain compounds which have structures of the formula (II)
  • n has a value from 0 to 10. All possible isomeric structures can be present on the ethylenic double bond. The preferred ranges for n are as indicated above.
  • the structures of the formula (II) can be prepared by reacting maleic acid or maleic anhydride and water with dicyclopentadiene. Simply substituted maleic acids are obtained, which thus have a free acid function. These compounds can be in the form of the free acid.
  • the structures of the formula (II) are preferably in the form of esterification products. The esterification can take place with monofunctional alcohols and / or polyfunctional alcohols and / or alkoxylation products thereof and / or polyether polyols and / or polyester polyols.
  • polyether polyols or polyester polyols of polyethylene oxide, polypropylene oxide, polytetrahydrofuran and / or polycaprolactone examples of preferred alcohols are neopentyl glycol, propylene glycol, dimethylol, cyclohexanediol, 1,6-hexanediol, trimethylolpropane, diethylene glycol monoethyl ether and ethoxylation products or propoxylation products thereof.
  • an ethoxylation product of one mole of trimethylolpropane and 20 moles of ethylene oxide can be used.
  • alkylating agent and the degree of alkoxylation also allow properties of the end products, such as hardness, hydrophilicity and elasticity, to be controlled.
  • Such polyols can also be only partially esterified with structures of the formula (II), the remaining hydroxyl groups either remaining free or esterified or etherified with other compounds or reacted with other compounds which are reactive with hydroxyl groups.
  • isocyanates or epoxides can be used, as can natural oils containing hydroxyl groups, such as castor oil.
  • Preferred products are obtained by reacting equal molar parts of dicyclopentadiene and maleic anhydride in the presence of water and then reacting the products with polyols, the number of OH groups in the polyols corresponding to the number of free acid functions of the substituted maleic acid.
  • Particularly preferred alcohols are 1,6-hexanediol, trimethylolpropane with 20 EO (ethylene oxide) and diethylene glycol monoethyl ether.
  • the structures of the general formula (II) or (I) can also be present in the form of amide or amine bonds in the corresponding compounds. These compounds can be produced, for example, by reaction with mono- and polyvalent amines.
  • reaction products can be salt-like adducts, but amides are preferred.
  • examples are the reaction products of amino-functional polyethylene oxides, polypropylene oxides or diene oils.
  • Dihydrodicyclopentadienol which corresponds to the structure of formula (I), with a hydroxyl group on the free valence, is commercially available.
  • ester structures can also be introduced by esterifying mono- or polycarboxylic acids or carboxylic acid functions of the polyester with this alcohol.
  • the compounds containing structures of the formulas (I) and (II) are preferably oligomeric or monomeric compounds, which are in particular liquids.
  • Cyclopentadiene can be grafted onto the double bonds of the unsaturated polyesters used according to the invention, whereby endomethylene tetrahydrophthalic acid structures are obtained. This is particularly the case when maleic acid or fumaric acid is used.
  • Polyesters which do not have any of these structures are preferably used. They are preferably mixed with the monomeric or oligomeric compounds described above and thus form the polyester resin compositions or used in the process according to the invention -Solutions.
  • the viscosity of the polyester resin compositions used can be changed via the amount of the monomeric or oligomeric compounds added in order to obtain a suitable viscosity.
  • the polyester resin compositions or solutions preferably contain 60 to 5, particularly preferably 30 to 10% by weight of compounds which have the structures of the formulas (I) and / or (II).
  • the polyester resin compositions or solutions used according to the invention are thermally and / or photochemically cured after impregnation, casting or coating and, if appropriate, removal of the solvent.
  • the polyester resin compositions preferably contain compounds or functional groups which can be activated thermally and / or photochemically in order to trigger crosslinking or radical polymerization.
  • the initiators can be chemically bound to the polyesters or can be present as free compounds in the polyester resin compositions. Examples of initiators which can be activated thermally are those compounds which form free radicals when heated. Known radical formers are peroxides, azo compounds, azides and CC-labile compounds.
  • the polyester resin compositions according to the invention have a high UV in the presence of UV initiators of the ⁇ -splitter type (Norrish type 1) or the H donor / acceptor systems (Norrish type 2). Sensitivity to.
  • a preferred way of introducing H-acceptor groups is to use condensable phenone compounds, such as hydroxy- or bishydroxybenzophenone, in the polycondensation of the polyester resins.
  • the photo initiators are activated with actinic radiation, preferably UV radiation.
  • Other suitable photoinitiators have xanthone, thioxanthone and / or the above phenon structures.
  • the photoinitiator is preferably hydroxybenzophenone, which is condensed into the polyester.
  • the curing can take place in one or more steps. For example, curing can be carried out first with actinic radiation and then or simultaneously or simultaneously with peroxides or C-C-labile substances. Partial hardening can also be carried out, for example up to the B state, which is followed by complete hardening at a later point in time. Suitable initiators and curing processes are listed in the documents described at the outset.
  • the polyester resin compositions or solutions are preferably first cured with UV light on the surface and then cured using heat-activatable initiators with heating. Also of importance is a method in which the polyester resin compositions or solutions, for example in electrical windings, are first cured inside the components by heat, the heat being generated by the flow of an electrical current through the component, and then optionally with UV - Light to be post-cured on the surface. Any combination and order of the above methods can be used for curing.
  • the softening temperature of the polyester resin compositions or solutions used according to the invention can be achieved by mixing different polyesters can be set. Monomeric or oligomeric compounds which have structures of the formulas (I) / (II) are also preferably added.
  • the softening temperature and the melt viscosity can be adjusted to the desired value by appropriate mixing.
  • These compounds can therefore be referred to as "reactive thinners" without having the disadvantages of the known ethylenically unsaturated compounds such as styrene.
  • the polyester resin compositions are preferably liquid at 20 ° C. or have softening ranges according to DIN 53180 of below 130 ° C., preferably below 90 ° C., particularly preferably below 40 ° C. They preferably have a viscosity of less than 100,000 mPas at 100 ° C, particularly preferably less than 30,000 mPas at 75 ° C, in particular less than 5,000 mPas at 50 ° C. They are preferably viscosity-stable for at least 24 hours at a temperature at which they have a viscosity of at most 10,000 mPas, particularly preferably at most 2,000 mPas. These advantageous values can be set in particular by using the above monomeric and oligomeric compounds.
  • polyester resin compositions which can be used without known unsaturated monomers, such as styrene , Vinyl toluene, ⁇ -methyl styrene, allyl esters, (meth) acrylic esters can be processed in liquid form.
  • unsaturated monomers such as styrene , Vinyl toluene, ⁇ -methyl styrene, allyl esters, (meth) acrylic esters can be processed in liquid form.
  • unsaturated monomers such as styrene , Vinyl toluene, ⁇ -methyl styrene, allyl esters, (meth) acrylic esters can be processed in liquid form.
  • acrylic, allylic or vinylically unsaturated monomers in small amounts, for example in order to formulate low-viscosity, low-styrene polyester resin compositions or solutions.
  • low-styrene polyester resin compounds or solutions can be formulated that comply with legal limits for styrene concentrations or emissions
  • polyester resin compositions can be adapted accordingly.
  • the chain length of the polyols or polycarboxylic acids can be varied, for example.
  • polyester resins built up with hexanediol or adipic acid are more flexible than polyester resins based on phthalic acid and ethylene glycol.
  • polyfunctional compounds which produce branches in the polyester molecules is known.
  • Known compounds are trimellitic acid or trimethylolpropane.
  • the polyester resin compositions or solutions can be prepared by any method.
  • the compounds which regulate the reactivity and viscosity in particular compounds which have structures of the formulas (I) and (II), are preferably prepared separately and then mixed with the polyesters and any other compounds used. It is also possible in many cases to produce the substances regulating the reactivity and viscosity in situ in polyester production by appropriately adjusting the stoichiometric ratios.
  • polyester resin compositions or solutions used according to the invention can also have other ingredients customary for polyester resins, such as Catalysts, coloring compounds, pigments, fillers and other auxiliaries.
  • polyester resin compositions or solutions used according to the invention can be used as impregnating, potting or coating compositions or solutions for coating moldings, i.e. as impregnating resins or impregnating lacquers.
  • Appropriate impregnation, casting or coating processes are known to the person skilled in the art.
  • 358 g of neopentyl glycol and 75 g of propylene glycol are heated to 140 ° C. under nitrogen and 356 g of isophthalic acid are added in portions.
  • the mixture is heated to 180 ° C. in 2 hours while distilling off the condensate water and then cooled to 100 ° C.
  • 209 g Ma Linseed anhydride added, and the mixture is heated to 200 ° C in 2 hours, a reduced pressure being applied in the last 30 minutes.
  • the resulting melt is poured onto aluminum foil and solidifies to a resin with an acid number of 17.
  • the flask contents are cooled to 70 ° C. and 715.0 g (6.05 mol) 1,6-hexanediol, 4.0 g dibutyltin dilaurate (DBTL) and 0.5 g hydroquinone are added.
  • the mixture is then rapidly heated to 120 ° C. under a gentle stream of nitrogen and the temperature is gradually raised to 190 ° C. in the course of 6 hours, during which condensation water is distilled off.
  • a soft resin with an acid number of 24 and viscosities of 3650 mPas at 50 ° C and 944 mPas at 75 ° C is obtained.
  • TP 200 is an ethoxylation product from one mole of trimethylolpropane and 20 moles of ethylene oxide) (corresponding to 5.5 mole equivalent of OH), 3.00 g of dibutyltin dilaurate (DBTL) and 0.3 g of hydroquinone were added. It is rapidly heated to 120 ° C under a gentle stream of nitrogen, and then the temperature is gradually raised to 190 ° C in 6 hours. The water of condensation is distilled off. A viscous, liquid resin with an acid number of 21 and viscosities of 9340 mPas at 25 ° C. and 1560 mPas at 75 ° C. is obtained.
  • DBTL dibutyltin dilaurate
  • the flask contents are cooled to 70 ° C and then with 683.4 g (5.1 mol) of diethylene glycol monoethyl ether, 4.0 g of dibutyltin dilaurate (DBTL) and 0.5 g Hydroquinone added. It is quickly heated to 120 ° C. under a gentle stream of nitrogen and then to a temperature of 190 ° C. in 6 hours. The water of condensation is distilled off. A low-viscosity substance with an acid number of 32 and viscosities of 290 mPas at 25 ° C. and 34 mPas at 50 ° C. is obtained.
  • DBTL dibutyltin dilaurate
  • sheet metal lids are filled with the polyester resin masses in approximately 20 mm thick layers and annealed at 150 ° C for 2 hours in a forced air oven. After cooling, hard, crack-free, light brown resin blocks result.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Organic Insulating Materials (AREA)

Abstract

Afin d'enduire des corps moulés, on les imprègne ou on les recouvre de masses ou de solutions de résine de polyester, ou on fait couler ces masses ou ces solutions sur les corps moulés. Ces masses et ces solutions sont sensiblement exemptes de monomères insaturés par des liaisons acrylique, allylique et vinylique, et contiennent des polyesters insaturés. Le cas échéant, on enlève ensuite le solvant et on durcit thermiquement et/ou photochimiquement l'enduit en résine de polyester. Ces corps moulés sont de préférence des composants électroniques ou électrotechniques ou des matériaux de support d'isolateurs électriques.
PCT/EP1998/001024 1997-02-25 1998-02-23 Procede pour enduire des corps moules avec des masses ou des solutions de resine de polyester WO1998038248A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BR9807614-0A BR9807614A (pt) 1997-02-25 1998-02-23 Processo para revestir artigos conformados, e, uso de resinas de poliéster ou soluções
CA002282412A CA2282412A1 (fr) 1997-02-25 1998-02-23 Procede pour enduire des corps moules avec des masses ou des solutions de resine de polyester
JP53728598A JP2001513830A (ja) 1997-02-25 1998-02-23 ポリエステル樹脂組成物または溶液により成形体を被覆する方法
EP98912371A EP0963413A1 (fr) 1997-02-25 1998-02-23 Procede pour enduire des corps moules avec des masses ou des solutions de resine de polyester

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997107492 DE19707492A1 (de) 1997-02-25 1997-02-25 Verfahren zum Beschichten von Formkörpern mit Polyesterharzmassen oder -lösungen
DE19707492.8 1997-02-25

Publications (1)

Publication Number Publication Date
WO1998038248A1 true WO1998038248A1 (fr) 1998-09-03

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PCT/EP1998/001024 WO1998038248A1 (fr) 1997-02-25 1998-02-23 Procede pour enduire des corps moules avec des masses ou des solutions de resine de polyester

Country Status (6)

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EP (1) EP0963413A1 (fr)
JP (1) JP2001513830A (fr)
BR (1) BR9807614A (fr)
CA (1) CA2282412A1 (fr)
DE (1) DE19707492A1 (fr)
WO (1) WO1998038248A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711410A1 (de) 1997-03-19 1998-09-24 Beck & Co Ag Dr Tränk-, Verguß- und Überzugsmassen für elektrotechnische und/oder elektronische Bauteile sowie für Trägermaterialien für flächige Isolierstoffe
US20110160341A1 (en) 2009-12-30 2011-06-30 E. I. Du Pont De Nemours And Company Composition for fixing wound items
DE102012109803A1 (de) 2012-06-21 2013-12-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Hochzähe Werkstoffe auf Basis ungesättigter Polyester

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LU42334A1 (fr) * 1961-09-11 1962-11-12
FR2183053A1 (fr) * 1972-04-29 1973-12-14 Bayer Ag
JPS5539243B2 (fr) * 1977-12-28 1980-10-09
US4261872A (en) * 1977-03-28 1981-04-14 Rohm And Haas Company Autoxidizable compositions
EP0134513A1 (fr) * 1983-07-19 1985-03-20 Herberts Gesellschaft mit beschränkter Haftung Masses d'imprégnation et procédé d'isolation d'enroulements électriques
DD257945A3 (de) * 1981-08-14 1988-07-06 Werner Freitag Autooxydierbare bindemittelkombinationen fuer luft- und forcierttrocknende ueberzugsmittel
US4801629A (en) * 1987-09-28 1989-01-31 Eastman Kodak Company Heat-curable compositions comprising a mixture of bis(2-hydroxyethyl)dicyclopentadiene-containing polyesters and unsaturated polyesters
EP0325154A2 (fr) * 1988-01-20 1989-07-26 BASF Aktiengesellschaft Résines de polyester insaturé à faible teneur en styrène
EP0368083A2 (fr) * 1988-11-08 1990-05-16 Bayer Ag Procédé pour la préparation de revêtements
EP0522400A2 (fr) * 1991-07-10 1993-01-13 Bayer Ag Esters insaturés, procédé pour leur préparation et leur utilisation
JPH08109322A (ja) * 1994-10-13 1996-04-30 Hitachi Chem Co Ltd 電気絶縁用樹脂組成物および電気絶縁処理されたトランスの製造法
DE19600149A1 (de) * 1996-01-04 1997-07-10 Beck & Co Ag Dr Tränk-, Verguß- und Überzugsmassen

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU42334A1 (fr) * 1961-09-11 1962-11-12
FR2183053A1 (fr) * 1972-04-29 1973-12-14 Bayer Ag
US4261872A (en) * 1977-03-28 1981-04-14 Rohm And Haas Company Autoxidizable compositions
JPS5539243B2 (fr) * 1977-12-28 1980-10-09
DD257945A3 (de) * 1981-08-14 1988-07-06 Werner Freitag Autooxydierbare bindemittelkombinationen fuer luft- und forcierttrocknende ueberzugsmittel
EP0134513A1 (fr) * 1983-07-19 1985-03-20 Herberts Gesellschaft mit beschränkter Haftung Masses d'imprégnation et procédé d'isolation d'enroulements électriques
US4801629A (en) * 1987-09-28 1989-01-31 Eastman Kodak Company Heat-curable compositions comprising a mixture of bis(2-hydroxyethyl)dicyclopentadiene-containing polyesters and unsaturated polyesters
EP0325154A2 (fr) * 1988-01-20 1989-07-26 BASF Aktiengesellschaft Résines de polyester insaturé à faible teneur en styrène
EP0368083A2 (fr) * 1988-11-08 1990-05-16 Bayer Ag Procédé pour la préparation de revêtements
EP0522400A2 (fr) * 1991-07-10 1993-01-13 Bayer Ag Esters insaturés, procédé pour leur préparation et leur utilisation
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* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 94, no. 14, 6 April 1981, Columbus, Ohio, US; abstract no. 104337, XP002070335 *
DATABASE WPI Section Ch Week 9627, Derwent World Patents Index; Class A13, AN 96-263908, XP002070336 *

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BR9807614A (pt) 2000-02-22
EP0963413A1 (fr) 1999-12-15
JP2001513830A (ja) 2001-09-04
DE19707492A1 (de) 1998-08-27
CA2282412A1 (fr) 1998-09-03

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