MXPA97004760A - A composition of high content coating soli - Google Patents

Abstract

The present invention relates to a composition useful as a coating composition comprising from 25 to 80 weight percent of binder components (a) to (d), while the remainder is the catalyst (e) and an organic liquid carrier, characterized in that the binder comprises of the following separate components: a) 5 to 50 weight percent binder, one or more hydroxy functional oligoesters having at least one hydroxy group in each of at least three separate branches of the oligoester, a polydispersity of less than 2.5, a hydroxy value of between 80 and 280, and an average molecular weight number (Mn) between 150 and 3000, b) 10 to 90 weight percent of the binder, of a functional hydroxyalkyl acrylic or a methacrylic copolymer with an Mn between 500 and 15,000 having a functional hydroxyalkyl comonomer content between 10 and 50 weight percent of the copolymer and at least 10 percent comonomers, based on the weight of the cop olimer, selected from the group consisting of cycloaliphatic substituted alkyl (meta) acrylic comonomer which includes the comonomer having an aliphatic bridge between carbon atoms in the cycloaliphatic ring, alkyl-substituted aromatic vinyl comonomers and combinations thereof, wherein the group alkyl-substituted cycloaliphatic in the comonomers has at least nine carbon atoms and the alkyl-substituted aromatic group in the comonomers has at least ten carbon atoms; c) 5 to 30 weight percent of the binder, a crosslinking agent capable of reacting with both compounds (a) and (b) above in the presence of an effective amount of catalyst, d) 0 to 45 percent, by weight of the binder, of a linear or branched acrylic, acryl-urethane, polyester, polyester urethane, polyether or polyether urethane that is compatible with the other components, and e) an effective amount of a catalyst

Description

ONE COMPOSITION OF HIGH SOLID CONTENT COATINGS FIELD OF THE INVENTION A coating composition consisting of a hydroxy functional (meta) acrylate copolymer derived from comono numbers consisting of a certain proportion of cycloaliphatic alkyl substituted acrylic comonomer (metha) and / or an aromatic alkyl vinyl substituted comonomer is described . The subsequent composition consists of a hydroxy functional oligomer, as described below, which can be linked intermolecularly with an intermolecular binding agent to form a thermosetting coating composition.

BACKGROUND OF THE INVENTION Automobiles and trucks receive exterior finishes-for several well-known reasons. First, such finishes provide a protective barrier against corrosion. According to do, consumers prefer an exterior finish that has an attractive aesthetic finish, including high gloss and excellent DOI (image distinction).

REF: 24800 A typical steel panel of a car or substrate has several layers of finishes or coatings. The substrate is typically first coated with a layer of inorganic iron or zinc phosphate that resists oxidation on which it is exposed to an artificial primer, which may be an electrocoat primer or a repair primer. Optionally, a surface primer can be applied to provide a better appearance and / or give adhesion. A basecoat or pigmented color coating is then applied over the primer. A base coat or typical color coating consists of a pigment, which may include metallic flakes in the case of a metallic finish. In order to protect and preserve the aesthetic qualities of the finish on the vehicle, it is well known to provide a clear (non-pigmented) topcoat over the colored (pigmented) basecoat, so the leftovers from the basecoat Do not be affected even by prolonged exposure to the environment or wear.

The automotive coating compositions, in recent years, have increasingly been subjected to the required regulations with respect to the volatile organic content (0C) -of the compositions. Even the lower requirements of 0C are expected to take effect in future years. Accordingly, several approaches to respond to those present or future regulations are tested, which includes the development of aqueous coatings, high-solids coatings, and powder coatings. - A problem with high solids coatings has been, however, that they usually require polymers that form a lower molecular weight film in quality - to give compositions having sprayable viscosities. -But the use of lower molecular weight polymers has an effect on the fall in the drying performance of the coatings when applied to a self-supporting substrate. Sticky free time is slower, which means that hot peppers can take significantly longer to paint. One goal, therefore, is to develop an improved automotive coating composition, in which an increase in the solids content of the composition does not result in the realization of the lower drying time.

Many useful film forming polymers in coating compositions are known in the art. Commonly such polymers are methacrylate or acrylic polymers - which are typically linear polymers that cure in the presence of an intermolecular binding agent. However, compositions containing oligomers are also known. For example, U.S. Pat. No. 4,322,508 (1982) discloses a paint composition of solid content based on a hydroxy functional oligomer in combination with a hydroxy functional copolymer and an intermolecular binding agent capable of reacting with those binder components. The hydroxy functional oligomer is prepared by esterification between a carboxylic acid and an epoxide. This patent does not disclose the use of monoepo xiesteres in the preparation. DE 1528802 (1994) discloses the preparation of polyesters having a small molecular weight distribution, which preparation uses monoepoxies-teres.

The U.S. Patent No. 3,804,478 (1989) discloses polystyrene numbers prepared by standard polycondensation. - The molecular weight distribution (M) will be wider than -the oligometers prepared via aperture polycondensation- of the ring with a negative impact on the properties.

GB 1,286,451 A (1968) describes olygomeres prepared via ring opening polycondensation. All the examples, however, are directed to epoxides, as well as those mentioned in U.S. Pat. No. 4,322,508.

GB 1,528,802 A (1978) describes a two-stage process for the. manufacture of oligometers. None of the acid anhydrides are mentioned, however, nor are such oligomers combined, in the formulation, with acrylics.

EPO 317, 184, EPO 316, 874, and U.S. Pat. - Nos. 4,713, 427 and 4, 732, 791 disclose coating compositions using polyol, epoxy and anhydride binders by intermolecular bonding. The U.S. Patent No. 4, 113, 702 (1978) discloses compositions in which an acidic polyester of specific viscosity is reacted with an epoxy ester. The U.S. Patent No. 4, 659, 788 (1978) covers oligomers, as used in the present invention which oligomers, however, have less than 52 carbon atoms.

Various coating compositions containing polymers having branched cycloaliphatic groups are substituted for various sizes or numbers of carbon atoms are also shown. For example, U.S. Pat. No. 4,603,064 discloses coating compositions, for use in clear coatings, based on acrylics prepared via a combination of silane-functional monomers and isorbonyl (meta) acrylate. The U.S. Patent No. 3, 644, 258 discloses the use of a tertiary butyl styrene monomer in coating compositions. US Patent No. 5,098,952 covers coating positions which are based on a mixture of a low glass transition temperature (T) of the higher hydroxyl acrylic copolymer-O with high T-acrylic hydroxyl-lower copolymer .

None of the above references discloses the combination of such hydroxy functional oligomers with a copolymer having a minimum amount of a substituted or branched cycloaliphatic (meta) acrylate monomer. The applicants have unexpectedly found that the use of such a copolymer with substituted alkyl or aliphatic alkyl groups or aromatic substix alkyl generally of the main element, in combination with a multifunctional hydroxy functional oligoester, solves the problem of obtaining the necessary balance of solids, -reactivity, and physical drying time in a coating composition, which balance is not carried out with copolymers (meta) acrylate having only linear (alkyl) alkyl or alkyl (acrylate) alkyl monomer units of shorter chain.

SUMMARY OF THE INVENTION The present invention is directed to a high solids content coating composition potentially consisting of a mixture of the following separate components: (a) a branched hydroxy functional oligoester having at least one hydroxy group in each of at least 3 separate branches of the oligoester and having a polydispersity of less than 2.5, a hydroxy value of between 80 and 280, and a number of average molecular weight (M_> between 150 and 3000: (b) a hydroxy functional acrylic or a methacrylic copolymer with an Mn between 500 and J 15000 which has a hydroxy functional monomer content between 10-50% by weight of the copolymer and a monomer of (meta) -acrylic alkyl-substituted cycloaliphatic and / or aromatic alkyl-substituted vinyl monomer, with at least 10% by weight of the copolymer; (c) an interraolecular binding agent capable of reacting with both components (a) and (b) above in the presence of an effective amount of catalyst.

The present composition is especially useful for the exterior sealing of automobiles and trucks and parts thereof. The present composition, which depends on the presence of pigments and other conventional compounds, is used as an -imprimer, surface primer, basecoat, and / or -clean coating. It is especially advantageous for its use in a clear coating. The subsequent claimed composition includes a substrate having adhered thereto a coating in accordance with the above composition.

The present invention offers several significant advantages. Applicants have found that the combination of the 2 binders components (a) and (b) above gives a good balance of properties to a high solids content. Especially, physical drying (lacquer type) and chemical drying (intermolecular bond) in relation to the solids content is significantly better when compared to external binding combinations of the claimed composition. The compositions according to the present invention also good resistance to strongly acidic water and, with respect to a topcoat, good gloss.

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a re-coating composition consisting of a novel combination of binder composites. In general, the total polymeric and oligoeric compounds of a coating composition are conventionally referred to as "solid agglutinants" or "binder" and are dissolved, emulsified or otherwise dispersed in a liquid solvent or carrier. The binder solids generally include all the solid polymeric compounds normally of the composition. Generally, catalysts, pigments, or chemical additives such as stabilizers are not considered part of the binding solids. The non-binding solids, other than pigment, usually does not exceed the amount of more than about 10% by weight of the composition. The coating composition of the present invention conveniently contains almost 25-80%, more typically 50-70% by weight of the binder, and almost 20-75%, more typically 30-50% by weight, of a solvent or carrier.

The present composition suitably consists of almost 5 to 50 percent, preferably 10 to 30 percent, based on the weight of the binder, of a hydroxy functional oligosaccharide. As indicated above, this branched hydroxy functional oligoester has at least one hydroxy group in each of at least 3 separate branches of the oligoester, has a polydisperse of less than 2.5, a hydroxy value between 80 and 280, and an average molecular weight (M) number between 150 and 3000. Such oligomers are sometimes referred to as "star" or "dendritic" oli'gomeros because they have a plurality of biazas .: or ramifications.

The oligoester can be prepared using a monoepoxies ter and preferably a monoepoxiester of a branched polycarboxylic acid such as a terceary fatty acid similar to TM TM Cardura E10 (Verso acid CQ) O Cardura E5 (C5 pivalic acid) , at least one of which is now commercially available from Shell. Applicants have found that monoepoxiesters - have narrow M-distributions, have a higher reactivity -da and, therefore, ter reaction times with less-side products. Oligomers that rely on monoepoxiesters may exhibit better durability than other epoxies. However, the broad scope of the present invention is not limited to any method of preparing the compounds of the composition, since then several alternative methods are known in the art, for example, as disclosed in U.S. Pat. No. 4,322,508, which is why they are incorporated by reference in their entirety.

The hydroxy functional oligomer can be synthesized by several routes, but preferably by the use of a ring opening polycondensation reaction in which r moles of a multifunctional or s-functional polyol (characterized in that s is preferably up to 4, but at least 2) or a mixture of polyols, so the average functionality is at least 2, are reacted with up to or less than rxs moles of an anhydride and / or acid anhydride and then with a sufficient amount of a monoepoxiester to convert the acid groups to hydroxyl groups.

Suitable polyols for the above-mentioned synthesis are glycerin, tri-methyloloprone, pentaerythylene, neopexylic glycol and ethylene glycol and the sybpeites. The suitable nitrides for the synthesis mentioned above are trimellitic nitrid, hydrogenated trimellitic anhydride, the Diels-Alder adduct of maleic anhydride with sorbic acid, the hydrogenated Diels-Alder adduct of maleic anhydride and sorbic acid, and the like.

Convenient monoepoxiesters which can be used for the synthesis mentioned above are the epoxiesters of benzoic acid, acetic acid, deprived acid (Cardu ra TM E5), versa-tico acid (Cardura TM E4 commercially available from Dow), and the like.

During synthesis, the lactone anion gap condensation (e.g., caprolactone) can also be used. The amount of 8-caprolactone as a percent weight of the composition, however, is preferably less than 50 percent. The oligomer has a functionality of at least 2, and preferably an OH value of 120 to 250 and an average Mn number of less than 2500.

By way of illustration, a structural mode of the oligomer, for use in the present invention, can be drawn as follows if the starting polyol is monopentaerythritol. characterized in that, in this example, n + m + o + p is equal to 4 because this is an example of an oligomer with 4 branches, although other oligomers used in the invention can have 3 branches, as indicated above . In this -example, for better properties, each of Q and p are inde- pendently in a maximum of 2 and each of n and m are independently in a maximum of 4. The subscript 1 q can be from 1 to 3. In a preferred 4-functional modality, p = 0, o = 0, and n = 3. For other branched oligometers with at least 3 branches, o and p are at a maximum of 2. In the previous formula, R1 and R are independently on a link of cycloaliphatic, aromatic or aliphatic chain with up to 9 carbon atoms and R0 is an aliphatic, aromatic or cycloaliphatic chain bond with up to 18 carbon atoms.

The present composition suitably consists of almost 10 to 90 percent, preferably 30 to 70 percent based on the weight of the binder, of one or more (meta) acrylate copolymers. These copolymers consist of: (a) 10-50 weight percent, preferably 20-35 percent, by weight of the copolymer, of a functional hydroxy monomer; and (b) 10-90 percent one weight, preferably 15 to 60 percent, one weight, more preferably 20 to 40 percent one weight "- of comonomers selected from the group consisting of comonomers (meta) acrylic alkyl. substituted cycloaliphatic, alkyl-substituted aromatic vinyl comonomer and combinations thereof, characterized in that the cycloaliphatic substituted alkyl group is at least Cq (has at least 9 carbon atoms, - preferably 9 to 12) and the vinyl alkyl group - substituted aromatic is at least C, .-. (has at least 10 carbon atoms, preferably 10 to 12). (c) 0-80 percent a weight, preferably 25 to 50 percent, of other copolymerizable comonomers.

Such an alkyl substituted cycloaliphatic acrylate or methacrylate may include, but is not limited to, trimethyl-cyclohexyl methacrylate, t-butyl cyclohexyl raetacrilate, isorbonyl methacrylate, or combinations thereof. Preferred aromatic vinyl monomers are alkyl substituted styrene such as t-butyl styrene. Recent monomers are commercially available at Deltech, Interorgana, or Amoco at U.S. A. Mixtures - of the comonomers mentioned above, for example, t-buyl is styrene with such monomers as isorbonyl-, t-butyl-cyclohexyl-, or trimethylcyclohexyl acrylate or methacrylate are also appropriate.

The substitution of the alkyl in the above comonomers may include one or more (preferably 1) alkyl groups each independently having 1 to 6 carbon atoms (preferably 3 to 4 carbon atoms). The term alkyl substituted, in this application, means that it includes an aliphatic bridge between carbon atoms in a cycloaliphatic ring. A cycloaliphatic, alkyl substituted monomer referred to for use in the copolymer mentioned above may have a formula as follows: 1 9 ^ /? characterized in that R is H or CH- and R, R, R, R, and R are each independently H, CH- or C [CH "]", and characterized -because optionally a bridge -CtCH ^^ - may exist in a -position for the ring, and characterized in that the ring group bonded to the COO group- has at least 9 carbon atoms, preferably 9 to 12 carbon atoms, and characterized in that the T of the monomer is preferably higher than 100 ° C. For example, the reported T of isobornyl methacrylate homopolymers is 110 ° C, of t-butyl styrene is 110 ° C, and of t-butyl cyclohexyl methacrylate is 110 ° C.

The hydroxy functional copolymer is suitably prepared by induced polerizations of the conventional free radical of appropriate unsaturated monomers. The copolymer contains 10-50% hydroxy functional monomers which are selected from hydroxyalkyl esters of mono- or di-ethylenically unsaturated carboxylic acids. The ethylenically unsaturated monomers containing hydroxy functionality that can be used in the copolymer include hydroxy alkyl acrylates and hydroxy alkyl methacrylates, characterized in that the alkyl has 1 to 12 carbon atoms. Convenient monomers include hydroxy ethyl acrylate, hydroxy propyl acrylate, hydroxy isopropyl acrylate, hydroxy butyl acrylate, hydroxy ethyl methacrylate, hydroxy propyl methacrylate, hydroxy isopropyl methacrylate, hydroxy butyl methacrylate, and the like, and mixtures thereof. The following examples are the reaction product of acrylic acid, methacrylamic acid, itaic acid, maleic acid, fumaric acid with monoepoxy compounds such as ethylene oxide, alkylepoxy ethers, alkylepoxyesters, and the like. A functionality -hydroxy can also be obtained from monomer precursors, -for example, the epoxy group of a glycidyl methacrylate unit in a polymer. Since an epoxy group can be converted, in a polymerization reaction with water or a small amount of acid, to a hydroxy group.

Preferably, the balance of the copolymer consists of another (meta) acrylate and / or vinyl monomers, including styrene, methyl styrene, and / or vinyltoluene monomers. The term "(meta) acrylate" in this application e-st-β means methacrylate, -acrylate or combinations thereof. Preferably, most of these monomers (greater than 50% by weight) in the copolymer balance are monomers of acrylate and methacrylate. For example, alkyl methacrylates having 1-12 carbon atoms in the alkyl group may be used such as methyl methacrylate, ethyl methacrylate, propyl methacrylate, isopropyl methacrylate, iso-butyl or tertiary butyl methacrylate, pentyl methacrylate, hexyl. raetacrilate, 2-ethyl-hexyl methacrylate, nonyl methacrylate, lauryl methacrylate, and the like or combinations of the same. Aryl methacrylates such as benzyl methacrylate can also be used. The semi-and diesters of acid male, Itaconic, or fumaric and combinations thereof can also be used.

The composition of a hydroxy functional copolymer is such that the hydroxyl value is preferably between 60 and 180, the average number M is below 4000, and the T calculated above - n g of 30 ° C. The copolymer can be prepared using free radical initiated polymerization in solution, for example, as described in U.S. 4,322,508, already incorporated by reference.

The weight ratio of oligomer to (meta) -acrylate copolymer is suitably 5/95 to 95/5, preferably between 30/70 and 70/30.

The oligomer has at least 2 hydroxyl groups per molecule, an OH value of 120 to 250, preferably between 40 and -220, and an average number of molecular weight of less than 2500.

The (meta) acrylate copolymer has an OH value of 60 to 180, preferably between 100 and 150, a calculated T (- (using the Fox equation) of at least 40 ° C, preferably above 50 ° C, and an average number of the molecular weight M of-less than 4000.

The coating composition contains one or more intermolecular bonds preferably based on natural polyisocytes.

Many examples of such intermolecular linkages are commercially available as seen by these specialists in the coatings art. Several isocyanates that are used as intermolecular binding agents are disclosed in U.S. Pat. No. 4,322,508 which is incorporated by reference, however, the biuret or diisocyanate cycotrimer of hexamethylene or isophorone diisocyanate is preferred.

The trifunctional isocyanates can be used, for example, triphenylmethane triisocyanate, 1,3,5-benzene triisocyanate, 2,4,6-toluleyne triisocyanate, a xylene adduct of tetramethyl diisocyanate or trimethylol sold under the name of Dre. commercial of "Citano 3160", "Desmodur" N3390 which is the trimer- of hexamethylene diisocyanate, and the like. Optionally one can use an acrylic polyisocyanate copolymer which is derived from isocyanatoethyl methacrylate (commercially available as TMI) and the like, as, for example, that disclosed in U.S. Pat. No. 4,965,317 (col 5) is hereby incorporated by reference.

As indicated above, the polyisocyanate can optionally be blocked. Examples of the blocking agents are those materials which do not block at elevated temperatures for example, lower aliphatic alcohols such as methanol, oximes such as methylethyl ketone oxime, and lactams such as epsiloncaprolactam. The blocking isocyanates can be used for a stable form of packing systems. The polyfunctional isocyanates with free isocyanate groups can be used to form 2 packaging systems. curable at room temperature. In those systems, the product and the isocyanate curing agent are mixed just before application.

Other film-forming polymers, preferably 0 to 45 percent by weight, are based on the weight of the binder, they can also be used in conjunction with the components which are mentioned above. Other film-forming polymers may be linear or branched and may include acrylics, acrylics, polyesters, polyester urethanes, polyethers, and polyester urethanes which are compatible with the other components of the binder.

The amounts of oligoester, copolymer, curing agent, and catalyst, from source, will vary depending on many factors, including compounds specific to the composition and the use of projection of the composition.

In addition, a composition according to the present invention may contain a variety of other optional ingredients, including pigments, pearlescent lamellae, fillers, plasticizers, antioxidants, surfactants and flow control agents.

To improve the ability of outdoor exposure -of a finish that is produced by the present coating composition, an ultraviolet light stabilizer can be added in an amount of almost 0.1-5% by weight, based on the weight of the binder. Such stabilizers include ultraviolet light absorbers, screens, quenchers and specific hindered amine light stabilizers. Also, an antioxidant can be added, at almost 0.1-5% by weight, based on the weight of the binder.

Typical ultraviolet light stabilizers that are useful include benzophenones, triazoles, triazines, benzoates, hindered amines and mixtures thereof. Speci fi c examples of ultraviolet light stabilizers are disclosed in U.S. Pat. 4,591,533, the full description of which is incorporated "here by reference.

The composition may also include additives of conventional formulation such as flow control agents, for example, Resiflow S (polybutylacrylate), BYK ™ 320 and 325- (high molecular weight polyacrylates); reo-logical control agents, such as smoked silica, microgels, and non-aqueous dispersion polymers; water scavengers such as tetrasilicane, trimethyl orthoformate, triethyl orthoformate, and the like.

When the present composition is used as a clear coating (top coat) on a pigmented color coating (basecoat) to give a clear coat / color coating finish, small amounts of pigment can be added to the coating. ¬ t clear to give a special color or aesthetic effects such as dye.

The present composition can be pigmented and used as a color coating, mono-coating, primer, or surface primer. The composition has excellent adhesion for a variety of metallic and non-metallic substrates, such as previously painted substrates, steels that are surrounded. of cold, steel that is phosphatized, and steel coated with conventional primers by electrodeposition. The present composition can also be used for plastic coating substrates such as glass fiber reinforced polyester, reaction by injection molding urethanes and partially crystalline polya-midas.

When the present coating composition is used as a base coat, the typical pigments that may be added to the composition include the following: metal oxides such as titanium dioxide, zinc oxide, iron oxides of various colors, black carbon, filler pigments such as talc, china clay, barytes, carbonates, silicates, and a wide variety of organic coloring pigments-such as quinacridones, co-phosphates, peri lenas, azo pi- ments, blue of indantrone, carzozole violets, isoindolinones, isoindolones, thioindigo reds, benzinium dazol inonas, metallic particles such as pieces of aluminum and the like.

The pigments may be introduced into the coating composition because it first forms a ground base or dispersion pigment with any of the aforementioned polymers that are used in the coating composition or with another compatible or dispersing co-lime by conventional techniques, such as a speed of mixing, grinding of sand, grinding of balls, crusher of grinding or 2 grinds of roller. The milled base is then mixed with the other constituents - which are used in the coating composition to obtain the present coating compositions.

The coating composition can be applied by conventional techniques such as spraying, electrostatic spraying, bathing, brushing, fluid coating and the like. The technique that is preferred is the spray.

The present composition can be used as a material in the environment, especially by refinishing, or at elevated temperature. In OEM applications, the composition is typically cooked at 100-150 ° C for about 15-30 minutes to form a coating of almost 0.1-3.0 millimeters thick. When the composition is used as a clear coating, it is applied over a color coating which can be dried in a tack free state and cured or preferably flash-dried for a short period before the clear coating is applied. apply The clear coating / color coating finish is then baked as mentioned above to provide a drying and curing finish. It is usual to apply a clear coating on a base coating by means of an application "painting by applying a new layer before the previous one is dry", for example, the top coating is applied to the base coat without cure or completely drying the base coat. The coated substrate is then heated for a predetermined period of time to allow the simultaneous cure of the base and clear coatings.

The following examples illustrate the invention. All -the parts and percentages are on a weight basis unless otherwise indicated. All molecular weights disclosed herein are determined by gel permeation chromatography which uses a standard polystyrene.

EXAMPLE 1 This example illustrates the preparation of a hydroxy functional oligomer which is convenient for use in the claimed composition. An amount of 160.16 g of butylacetate, 136 g of monopentaerythritol, and 504 g of methylhexa-hydrophthalic anhydride are charged to a glass reactor and heated to reflux until dissolved. After, 750 g of CE10 (Cardura E10 - glycidyl ester of versatile acid) are added, followed by 1.39 g of dibutyl tin dilaurate dissolved in 8.61 g of butylacetate. The mixture is then refluxed until the acid value (AV) or acid number (AN), synonymous terms, is below 3.-Other 177.33 g of butylacetate were added. The total reaction time is almost 3 hours. The results of exemplary tests are as follows. Hydroxy numbers or values are calculated from the theoretical structure.

Parameter Value Solids 80.5% Viscosity X Parameter Value AN 2.8 M 1190 n M 1460 W Molar ratio: monopentaeritrihydrate / methylhexahydrophthalic anhydride / Cardura ™ E10 1/3/3 OH? theoretical 161 EXAMPLE 2 This example illustrates the preparation of a hydroxy functional oligomer which, however, is less preferred than the oligomer of example 1 for use in the composition Which is vindicates An oligomer was prepared via conventional polyesterification at 230 ° C using 474 g of isononanoic acid, 276 g of glycerin, 136 g of monopentaerythritol and 504 g of methylhexahydrophthalic anhydride. The structure can be prepared with Example 1 on a molar basis if one uses isononanoic acid as a reference for the versatile acid as found in the TM structure of Cardura E10. The mixture was diluted with 108 g of butylacetate. The results are as follows: Parameter Value Solids 79.5% Parameter Value Viscosity Y AN 1.5 w 4750 Molar population: monopentaerythritol / methylhexahydrophthalic anhydride / isononanoic acid / glycerin 1/3/3/3 OH? theoretical 175 The results show a very broad distribution of w compared to Example 1 and a solids / viscosity balance - less favorable.

COMPARATIVE EXAMPLE 3 This example illustrates the preparation of a hydroxy functional oligomer which is convenient for use in the claimed composition, but which is also less favorable than the oligomer of example 1. The procedure of example 1 was repeated using 411g of ethexyl hexylglycidyl ether (Grilonit TM 1803) instead of Cardura E10, then by 41 g of butylacetate and 1.05 of dibutyl tin dilaurate dissolved in 8.95 g of butylacetate. After 8 hours of reaction time, the acid value is still 75, although on a molar basis this is below 3. An additional quantity of the catalyst dimethylcyclohexylamine (135 g) was added as well as 330 g of ethylhexylglycidyl ether . After an additional reaction time of 16 hours, the mixture was diluted with 50 g of butylacetate. The results are - as follows: Parameter Value Solids 81 Viscosity D + 1/3 AN 11.9 Molar ratio: monopentaerythritol / methylhexahydrophthalic anhydride / ethylhexylglycidyl ether 1/3/3 OH? theoretical 214 This reference example shows that the use of epoxy esters is more favorable than using epoxyethers, as previously mentioned.

EXAMPLE 4 This example illustrates the preparation of a hydroxy functional oligomer which is suitable for use in the claimed composition, but which is less preferred than the one of Example 1. The procedure of Example 1 was repeated but using 546 g of cyclododecane epoxide (CDE), then 47 g of butylacetate and 1.49 g of buti cetate dissolved in 8.51 g of butylacetate. Although the AN is low on. a molar base, after 16 hours of reflux this remains at 115. The results are as follows: Parameter Value Solids 80.5 Viscosity U - AN 115 Molar ratio: monopentaerythritol / ethylhexahydrophthalic anhydride / cyclododecane epoxide 1/3/3 OH? theoretical 214 The M "is lower than the one calculated theoretically.

The molecular weight distribution is bimodal showing side reactions.

EXAMPLE 5 This example illustrates the preparation of a hydroxy functional oligomer which is convenient for use in the claimed position. The procedure of Example 1 continued to use 115.91 g of butylacetate, 136 g of monopentaerythritol and 336 g of methylhexahydrophthalic anhydride in the reactor followed by 500 g of Cardura E10 and 0.97 g of dibutyl tin dilaurate in 9.03 g of butylacetate. . The batch was refluxed until the AN was greater than 3 and then diluted with 117.09 g of butylacetate. The test results are as follows: Parameter Value Solids 82% Viscosity X + 1/3 AN 3 Mw 1520 Molar ratio: monopentaerythritol / methylhexahydrophthalic anhydride / Cardura ™ E10 1/2/2 OH? theoretical 231 EXAMPLE 6 This example illustrates the preparation of another oligomer-functional hydroxy which is convenient for use in the composition claimed. The solution of the oligomer of example 5, in the amount of 1215 g, was then refluxed for 4 hours with -114 g of caprolactone and 10 g of butylacetate. The solution was then diluted with 18.5 g of butylacetate. The test results are as follows: Parameter Value Solids 82.2% Viscosity W AN 2.9 Mw 1450 left-free caprolactone none Molar ratio: monopentaerythritol / methylhexahydrophthalic anhydride / TM Cardura E10 / -caprolactone 1/2/2/1 OH? theoretical 207 EXAMPLE 7 This example illustrates the preparation of another functional oligomer-hydroxy which is convenient for use in the claimed composition. 110 g of methoxy ether of propylene glycol acetate, 136 g of monopentaerythritol and 768 g of trimellitic anhydride all together are refluxed in a glass reactor - until dissolved. In addition 0.9 g of dimethylcyclohexylamine dissolved in 4.1 g of methoxy ether of propylene glycol acetate are added and refluxed for 2 hours. Sequentially, 2000g of Cardju ra TM E10 were added and the mixture was then refluxed until the AN was lowered to 10, then add an additional 2 grams of dimethylcyclohexylamine in 3 g of methoxy ether of glycol propylene acetate. In the end, another 454 g of methoxy ether of propylene glycol acetate were added. The total reaction time is 5 hours. The results are as follows: Parameter Value Solids 66.3% Viscosity N + AN 6.9 M 1000 M 2300 Molar ratio: monopentaerythritol / trimellitic anhydride / Cardura ™ E10 1/4/8 Theoretical OH 155 EXAMPLE 8 The example illustrates the preparation of a hydrophilic oligo- Functional xi which is suitable for use in the claimed composition, but which is preferred less than the previous examples. The procedure of Example 7 was repeated, however, 1568 g of ethylhexylglycidyl ether (Grilonit 1807) were added, then 1.6 g of dimethylcyclohexylamine in 3.4 g of propylene glycol acetate metoxy ether. After 24 hours of the reaction time and adding an extra amount of up to 1.6 g of the dimethylcyclohexylamine catalyst, the AN remains at 43. An additional amount of 457 g of ethylhexylglycidyl ether was added with an extra amount of 6. hours of reflux and thinned with 221 g of glycerol propylene acetate rnetoxyether. The molecular weight distribution of the final reaction product is much broader than example 7, which show -more side reactions of the ethylhexylglycidyl ether. The results are as follows: Parameter Value Solids 64.6% Viscosity DT AN 0.5 M 700 n Molar ratio: monopentaerythritol / trimellitic anhydride / ethylhexylglycidyl ether 1/4/8 OH theoretical f 182 EXAMPLE 9 This example illustrates the preparation of another oligomer-functional hydroxy which is suitable for use in the claimed composition. All together, 688 g of butylacetate, 136 g of monopenta-erythritol and 792 g of trimellitic-hydrogenated anhydride were refluxed until dissolved. Then add 2000 g of Cardura E10, then 2.93 g of dibutyltin dilaurate in 7.07 g of butylacetate, and the mixture is refluxed until the AN is lowered to 3. Finally, 34 g of butylacetate is added. they added. The results are as follows: Parameter Value Solids 81% Viscosity Z 2 AN 2.7 M 1960 n M 3360 Molar ratio: Monopentaerythritol / hydrogenated trimellitic anhydride / Cardura TM E10 1/4/8 OH theoretical f 153 EXAMPLE 10 This example illustrates the preparation of another functional droxy oligomer which is suitable for use in the claimed composition. The procedure of Example 9 was repeated using 160 g of butylacetate, 136 g of monopentaerythritol and 462 g of hexahydrofonic anhydride. Then, 483 g of Cardju ra TM E5, then 48 g of butylacetate and 1.07 g of dibutyl tin dilaurate were dissolved in 8.93 g of butylacetate, and the mixture was refluxed until the AN was lower than 3. The mixture was diluted after - with 61 g of butylacetate. The results are as follows: Parameter Value Solids 81.7% Viscosity Z 1-1 / 2 Molar ratio: Monopentaerythritol / hexahydrophthalic anhydride / Cardura ™ g5 1/3/3 OH theoretical f 208 EXAMPLE 11 This example illustrates the preparation of another functional polyhydroxy oligomer which is suitable for use in the claimed composition. The procedure of Example 9 was repeated using 248 g of butylacetate, 444 g of phthalic anhydride, 134 g of trimethylolpropane and then using 750 g of Cardu-ra TM E10 and 1.33 g of dibutyl tin dilaurate in 8.57 g of butylacetate. Finally, the oligomer was diluted using 311 g of bu-tilacetate (refluxed until the AN was lowered to 10). The results are as follows: Parameter Value Solids 72.3 Viscosity F + 1/3 AN 7.3 Molar ratio: Trimethylolpropane / phthalic anhydride / Cardura ™ E10 1/3/3 OH theoretical f 127 EXAMPLE 12 This example illustrates the preparation of another oligomer-hydroxy functional which is suitable for use in the claimed composition. This example illustrates, by reference, a linear oligomer with a non-theoretical OH (OH value) below -120. The procedure of example 9 was repeated using 160 g? of butylacetate, 104 g of neopentyl glycol, 672 g of anhydride of TM-ethylhexahydrofonic acid, 1000 g of Cardura E10, and 1.78 g of dibutyltin dilaurat in 8.22 g of butylacetate. The reaction mixture was refluxed until the AN was lowered to 3, and then the mixture was diluted with 274 g of butylacetate. The results are as follows: Parameter Value Solids 80.1% Viscosity U + 1/3 AN 2.8 Molar ratio: Neopentyl glycol / Methylhexahydrophthalic anhydride / TM Cardura E10 OH theoretical f 63 EXAMPLE 13 This example illustrates the preparation of another hydroxy functional oligomer which is suitable for use in the claimed composition. The procedure of Example 9 was repeated using 160 g of butylacetate, 168 g of rathylhexylhydrophthalic anhydride, 296 g of phthalic anhydride, and 136 g of monopentamethylethritol. Then 750 g of Cardura E10 were added with - 1.35 g of dibutyl tin dilaurate in 8.65 g of butylacetate. The mixture was refluxed until the AN was lowered to 3 and then with 167.5 g of butylacetate. The results are as follows: Parameter Value Solids 81.9% Viscosity Y AN 1.3 M 1160 M 1640 W Molar ratio: Monopentaerythritol / methylhexahydrophthalic anhydride / TM phthalic anhydride / Cardura E10 1/1/2/3 OH theoretical f 166 EXAMPLE 14 This example illustrates the preparation of another oligomer-functional hydroxy which is suitable for use in the compo¬ tion that is claimed, but which is preferred less. An oligomer was prepared via conventional polyesterification at 230 ° C using 474 g of isononanoic acid, 276 g of glycerin, 136 g of monopentaerythritol, 168 g of methylhexahydrophthalic anhydride and 296 g of phthalic anhydride. The structure can be compared on a molar basis with the structure of the oligomer of example 13 using isononanoic acid as a reference for the - versatic acid as it is chemically found in the structure of Cardura TM E10. The mixture was diluted with 315.5 g of butylacetate, then it reaches an AN below 3. The results are as follows: Parameter Value Solids 81.2% Viscosity Z2 - 1/3 AN 0.9 M 1580 Molar ratio: Monopentaerythritol / raethylhexahydrophthalic anhydride / phthalic anhydride / isononanoic acid / glycerin 1/1/2/3/3 OH theoretical f The results show a less favorable viscosity / solids ratio due to a broad Mw distribution when used a standard polyester reaction.

EXAMPLE 15 This example illustrates the preparation of another oligomer-functional hydroxy which is suitable for use in the claimed composition. In particular, this example illustrates, by reference, an oligomer with more than 50% fi-caprolactone. Then, 66.34 g of ε-caprolactone are heated with 33.52 g, of 1,4-cyclohexanedimethanol dissolved in 0.133 g of xylene at 160 ° C for 4 hours. The results are as follows: Parameter Value Solids 99.7% Viscosity U + 1/2 AN 0.8 % of free ca -caprolactone 0.15 Molar ratio: 1,4-cyclohexanedimethanol / £ -caprolactone 1 / 2.5 OH theoretical f 162% weight of β-caprolactone in the composition + 55% EXAMPLE 16 This example illustrates the preparation of another functional oligomer-hydroxy which is suitable for use in the claimed composition. The procedure of example 9 was repeated using 140 j? of butylacetate, 136 g of monopentaerythritol, 672 g of methylahydroalkyl anhydride, 600 g of CarduraT'M E4 and 0.3 q of dibethyl tin dilaurate dissolved in 3.7 g of butylacetate. The mixture was refluxed until the AN was in the range of 5-10. Subsequently, 108 g of butylacetate were added. The results are as follows: Parameter Value Solids 77.3 Viscosity X + 1/3 AN 6.9 M 1100 n Molar ratio: Monopentaerythritol / methylhexahydrophthalic anhydride / Cardura ™ E4 1/4/4 OH theoretical f 159 EXAMPLE 17 This example illustrates the preparation of a copolymer which it is derived from comonomeros that consist of a branched cycloaliphatic (meta) acrylic monomer. In a reactor equipped with a -agitator, condenser, thermometer and feed container, 18 parts of butylacetate were added, which was heated to re-flow. To a mixture of 37.8 parts of isobornyl methacrylate, 19. 6 parts of 2-hydroxyethylmethacrylate, 12.6 parts of 2-ethylhexylmethacrylate, 5.5 parts of t-butylperoxy-2-ethylhexanoate and 18.2 parts of butylacetate were fed to the reactor for 6 hours. Then, 1 part of butylacetate was used as a rinse and added to the reactor. The mixture was refluxed for another 20 minutes. Then, 0.5 parts of t-butyl-peroxy-2-ethylhexanoate were dissolved in 1.5 parts of butylacetate and added for 30 minutes followed by 1 part of butiacetate as rinsing. The mixture was refluxed for another 30 minutes and 1 part of butylacetate was added. The test results are as follows: Parameter Value Solids 60.6% Viscosity T + 1/3 AN 1.9 M 2700 M 5300 W Composition (weight) Isobornyl methacrylate / 2-hydroxyethyl methacrylate / 2-ethylhexyl methacrylate 54/28/18 T calculated 35 ° C 8 OH theoretical f 121 COMPARATIVE EXAMPLE 18 The procedure of Example 17 was followed except that the isobornyl methacrylate was replaced with i-butyl methacrylate.-The test results are as follows: Parameter Value Solids 59.8% Viscosity T + 1/2 AN 18 Composition (weight): Isobutylmethacrylate / 2-hydroxyethylmethacrylate / 2-ethylhexylmethacrylate 54/28/18 T calculated 35 ° C g OH theoretical f 121 COMPARATIVE EXAMPLE 19 The procedure of Example 17 was followed except that the isobornyl methacrylate was replaced with t-butyl methacrylate. The -results are as follows: Parameter Value Solids 58.9% Viscosity U - 1/4 AN 4.7 Composition (weight): tertiary butyl methacrylate / 2-hydroxyethylmethacrylate / 2-ethylhexyl methacrylate 54/28/18 T calculated 66 ° C g theoretical OH 121 COMPARATIVE EXAMPLE 20 The procedure of Example 17 was followed except that the isobornyl methacrylate was replaced with methyl acrylate. The test results are as follows: Parameter Value Solids 61% Viscosity Z 5 AN 1.9 M "7400 Composition (weight): Methylmethacrylate / 2-hydroxyethylmethacrylate / 2-ethylhexyl methacrylate 54/28/18 T calculated 64 ° C g OH theoretical f 121 EXAMPLE 21 The procedure of Example 17 was followed except that the isobornyl methacrylate was replaced with t-butyl styrene. The test results are as follows: Parameter Value Solid 61.8% Viscosity V AN 0.6 M 2500 n Mw 6300 Composition (weight) tertiary butyl styrene / 2-hydroxyethylmethacrylate / 2-ethylhexyl methacrylate 54/28/18 calculated 75 ° C Theoretical OH 121 EXAMPLE 23 The procedure of Example 17 was repeated except that -18 parts of amylacetate was charged to the reactor. A mixture of 21 parts of styrene, 21 parts of isobornyl methacrylate, 15.4 parts of 2-hydroxyethyl methacrylate, 1.8 parts of acrylic acid, 9.8 parts of Cardura TM E10, 3.5 parts of t-butylperoxy-, 5, 5-trimethyl- hexanoate and 3.5 parts of amylacetate were fed to the reactor for 5 hours. A quantity part of amylacetate was used to rinse, and the reactor mixture helped for 20 minutes at reflux. Then 0.3 part of t-butyl peroxy-3,5,5-trimethylhexanoate was added in 1. 7 parts of amylacetate for 30 minutes, followed by one part of rinsing amylacetate. The mixture was then refluxed * for another 60 minutes. The batch was finally thinned with 17.6 parts of butylacetate. The results are-as follows: Parameter Value Solids 62.2% Viscosity V + 1/3 AN 6.7 M 2500 W 5400 Composition (weight): Isobornyl methacrylate / styrene / 2-hydroxyethyl methacrylate / acrylic acid / Cardura TM E10 30/30/22/4/14 T calculated 62 ° C g OH theoretical f 126 The reaction product of acrylic acid and Cardura E5 - (the trade name line for the monoepoxy ester of pivalic acid) was obtained during the synthesis and has a calculated T of -25 ° C.

EXAMPLE 24 The procedure of Example 23 was repeated with styrene being replaced by t-butyl styrene and isobornyl methacrylate - which is replaced by isobitulmethacrylate.

Parameter Value Solids 60.7 Viscosity H- 1/4 AN 5.8 M 1900 M 4200 W Composition (weight): t-butyl styrene / i-butymethacrylate / 2-hydroxyethyl methacrylate / TM acidoic acid / Cardura E10 30/30/22/4/14 T Calculated 50 ° C g OH theoretical f 126 EXAMPLE 25 The procedure of Example 17 was repeated with 37.8 parts of isobornyl methacrylate which was replaced by 24.50 parts of styrene and 19 parts of isobornyl methacrylate. The results are as follows: Parameter Value Solids 62.4 Viscosity AND AN 2.6 M 3200 n M 6700 W Composition (weight): Isorbonylmethacrylate / styrene / 2-hydroxyethylmethacrylate / 2-methyl-exylmethacrylate 19/35/28/18 T Calculated 64 ° C g O f eoric 121 EXAMPLE 26 The procedure of example 17 was repeated with 39.9 parts of isobornyl methacrylate, 17.5 parts of 2-hydroxyethylmethacrylate, 3.78 parts of acrylic acid, 8.82 parts of Cardura T'M E5, 4. 7 parts of t-butylperoxy-2-ethylexanoate and 2.4 parts of butyl acetate in the first feed. At the end, the batch was thinned with 16.7 parts of butylacetate. The results-are as follows: Parameter Value Solids 59% Viscosity X AN 8.9 Composition (weight): Isobornyl methacrylate / 2-hydroxyethyl methacrylate / TM Acrylic acid / Cardura E5 57/25 / 5.4 / 12.6 T Calculated 71 ° C g Theoretical OH 150 The reaction product of acrylic acid and cardura TM E5 was obtained during the synthesis and has a calculated T of more 3 ° C.

EXAMPLE 27 The procedure of example 17 was repeated using 12 coupler Sol.S.sub.50 solvent in the reactor. Styrene in the amount of 16.2 parts, 162 parts of isobornyl methacrylate, - 16.8 parts of 2-hydroxyethylmethacrylate, 10.8 parts of 2-ethyl hexylmethacrylate, 0.8 parts of DBTP and 6.2 parts of the solvent TM Solvesso 100 were fed to the reflux solvent for 5 hours. An additional part of Solvesso TM 100 solvent was added as a rinse. The reaction mixture was maintained for one hour and then thinned with 20 parts of butylacetate. The results are co or follow: Parameter Value Solids 61.1% Viscosity g + 1/3 AN 2.1 n Composition (weight): Isobornylmethacrylate / 2-hydroxyethylmethacrylate / 2-ethylhexyl methacrylate 27/28/18 T Calculated 65 ° C g OH theoretical f 120 EXAMPLE 28 The procedure of example 17 was repeated, however, by replacing the isobornyl methacrylate with t-butyl-cyclohexyl-methacrylate. The results are as follows: Parameter Value Solids 61.8% Viscosity X AN 2.4 8300 Composition (weight): Tertiary butylcyclohexyl ethacrylate / 2-hydroxyethylmethacrylate / 2-ethylhexyl methacrylate 54/28/18 T Calculated 66 ° C g OH theoretical f 120 EXAMPLE 29 A red painted solid is formulated by mixing-from the following constituents: Methacrylate copolymer compound (from example 17) in the amount of 24.37 parts. Polyester olygomer (from example 17) in the amount - of 3.71 parts. Red dispersion, in the amount of 20.57 parts consisting of: 6.48 pigment CINQUASIA RED RT-333-D (Ciba-Geigy), 30.08 of a hydroxy functional acrylic copolymer with amino functional groups, having an average molecular weight of 15000-20000, and 33% sol_vente. Orange dispersion in the amount of 17.58 that. consist. 48. 5% pigment S icomin Rot. L_ 3235-S (BASF), 18. 5% -of an unitary hydroxyfunctional copolymer with aminof uncinales - which have an average molecular weight of 15000-20000, and 33% of organic solvent. Additives in the amount of 0.83 parts that consist of: liquid and wear-resistant silicones, UV protection additives, acceleration catalyst »Organic solvents in the amount of 13.85 parts -constant of common solvents for the technique .

Isocyanate resin in the amount of 19.09 parts of polyisocyanate cyclotrymer, DES N 3390 from Bayer.

The VOC of the resulting paint is 480 g / L at spray viscosity (22 sec DIN 4 vessels). The physical properties of drying are tested in 2 different ways. For dust free time, the paint is sprayed onto the surface with a standard primer of a dry film thickness of 2.5 - 3 millimeters. At appropriate time intervals, the surface is slightly touched by cotton fibers. The paint is considered dust-free if the cotton fibers are not retained more to the paint surface. For tack-free time, the paint is sprayed by applying a standard primer with a dry film thickness of 2.5-3 milli-meters to the surface. At appropriate time intervals, a paper is placed on the surface of the paint. On the surface of the paper, a standard weight of 50 g is placed. After 10 seconds, the weight is removed and the panel is changed upside down. If the paper strips in 10 seconds, the paint is considered tack-free. The results are as follows: VOC 480 g / L Dust free time 42 minutes Sticky free time 145 minutes COMPARATIVE EXAMPLE 3fr The procedure of Example 29 was followed except that the methacrylate copolymer (Example 17) was replaced with the methacrylate copolymer (Comparative Example 18). The results are as follows: VOC 504 g / L Powder free time 51 minutes Sticky free time 240 minutes COMPARATIVE EXAMPLE 31 The procedure of Example 29 was followed except that the methacrylate copolymer (Example 17) was replaced with the methacrylate copolymer (Comparative Example 19). The results are as follows: VOC 504 g / L Powder free time 48 minutes Sticky free time 240 minutes COMPARATIVE EXAMPLE 32 The procedure of Example 29 was followed except that the methacrylate copolymer (example 17) was replaced with the methacrylate copolymer (comparative example 20). When formulated in a red topcoat, an unacceptable solid / viscosity balance was fully achieved. At dew viscosity (22 sec DIN 4 vessels), the VOC is 526 g / L.

COMPARATIVE EXAMPLE 33 The procedure of Example 29 was followed except that the methacrylate copolymer (Example 17) was replaced with the methacrylate copolymer (Example 21). The results are - as follows: VOC 480 g / L Free time of dust 43 minutes Free time of pessimism 150 minutes EXAMPLES 34-38 A number of clear coatings were formulated with an increase in the amount of oligomer by mixing the following constituents: Compounds: Methacrylate copolymer (from Example 23) Polyester Oligomer (from Example 1) Additives: liquid paste silicones and resistant to Wear UV protection additives, accelerating catalysts. Organic solvents: common to the technique. Isocyanate resin: polyisocyanate cyclotrimer, DES N 3390 from BAYER. The results are as follows: Parts by weight Ex .34 E .35 E .36 Ex. 37 E .38 Compound Methacrylic copolymer 53.00 44.28 33.94 23.84 12.26 lato Oligomere polyester - 8.60 17.53 27.71 38.03 Additives 1.96 2.07 2.11 2.22 2.28 Organic solvents 28.41 27.10 26.56 24.69 24.30 Isocyanate resin 16.63 18.06 19.86 21.54 23.13 Application of test methods (1) Dust-free time: as described - with the top coat of example 29. (2) Stick-free time 'as described with the top coat of example 29. (3) Strength of the adhesive tape: a piece of adhesive tape is applied to the film of the paint that uses moderate pressure and laminated on the adhesive tape with a weight of 2 kg.

The adhesive tape was removed after 5 minutes. After -expecting 15 minutes, the film was verified by the type of adhesive tape. The test results are as follows: RecubriAglutinante VOC Type Time Time of composition composition g / L of free of sticky-clear acrylic / tape dust dad (min_u oligomere of (minutes) cough). 5 hours. 34 100/0 498 very bad 20 180 35 80/20 473 bad 24 210 36 60/40 452 reasonable- 28 220 good 37 40/60 420 good 29 220 38 20/80 397 good very 31 240 good Out of these results, the following conclusions can be made. The presence of a polystyrene oligomer is important for several VOC reasons. The increase in the olygomery resulting from better VOC values. The olygomer has only a slight negative influence on physical drying, as expressed by dust-free times and free time. The oligomer has a strong positive influence - on an intermolecular bond density as expressed in the resistance results of 1 tape type.

These specialists in the art are doubtful that they are skilled in composing numerous variations in the subjects - which are revealed, such as changing the amounts of the ingredients insignificantly by these samples, adding harmless or supplementary substances, or equivalent compounds that are replaced by those samples. Such variations are considered within the concept of the invention, as defined in the following claims.

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Having described the invention as above, the content of the following is claimed as property.

Claims (8)

CLAIMS:

1. A composition useful as a coating composition having 25 to 80 percent by weight of binding components and 75 to 20 percent by weight of an organic liquid carrier, characterized in that the binder consists of the following separate compounds: (a) 5 to 50 percent by weight of binder, of one or more other hydroxy-functional oligoesters having at least one hydroxy functional group in each of at least 3 separate branches of the oligoester, a polydispersity of less than 2.5, hydroxy value between 80 and 280, and a. average molecular weight number (M) between 150 and 3000; (b) 10 to 90 percent by weight of the binder, of a hydroxy functional acrylic or a methacrylic copolymer with an M n between 500 and J 15000 having a functional hydro-or xi comonomer content between 10 and 50 weight percent of the copolymer and at least 10 percent comonomers that are selected from the group consisting of the alkyl substituted (meta) acrylic-cycloaliphatic comonomer and / or vinyl substituted alkyl aromatic comonomers, and combinations thereof, wherein the -group cycloaliphatic aligil substituted in those mentioned as having at least 9 carbon atoms and the alkyl-substituted aromatic group in said comonoraeros has at least 10 carbon atoms; (c) 5 to 30 percent, by weight of the binder, of an intermolecular binding agent capable of reacting with both -compounds (a) and (b) above in the presence of an effective amount of catalyst; Y (d) an effective amount of a cure catalyst.

2. The composition of claim 1, characterized in that the hydroxy functional oligomer in an oligoester is obtained by the reaction of a branched polycarboxylic acid and a monoepoxiester.

3. The composition of the rei indication 1, characterized in that the hydroxy functional oligomer is the product of a ring opening polycondensation reaction in which a multifunctional polyol reacts with an anhydride or an acid anhydride and then with an epoxide.

4. The composition of claim 1, characterized in that the hydroxy functional oligoester has the following fora: characterized in that n + m + o + p equals 4, o and p are each a maximum of 2, q is from 1 to 3, and R, and R ~ are independently an aliphatic, aromatic or cycloaliphatic bond with up to 9. carbon atoms and R? is an aliphatic, - aromatic or cycloaliphatic bond with up to 18 carbon atoms.

5. The composition of claim 1, characterized in that the alkyl-substituted cycloaliphatic (meta) acrylic comonomer and / or aromatic alkyl-substituted vinyl comonomers are selected from the group consisting of isobornyl, - 't-butyl cyclohexyl, or 3, 5, 5- trimethyl-cyclohexyl (meta) acrylate, t-butyl styrene and combinations thereof.

6. The composition of claim 1, characterized in that the ratio of the hydroxy functional oligoester to the copolymer is * between 30:70 to 70:30.

7. The composition of claim 1, characterized in that the hydroxy functional oligoester has an OH value of 120 to 250 and a number average molecular weight of less than 2500.

8. The composition of claim 1, characterized in that the hydroxy functional copolymer has an OH value of 60 to 180, a calculated T of at least 40 ° C, and a number average molecular weight of less than 4000.