TW200914557A - Composition comprising anti-bridging agent - Google Patents

Abstract

The present invention relates to an anti-bridging agent having a general formula Xn-Ym, wherein X is a group with an affinity to a pigment particle and/or to a filler particle, wherein Y is a group with an affinity to a polymer and wherein n is an integer from 1 to 3 and m is an integer from 1 to 4 wherein the glass transition temperature of the anti-bridging agent is at least 30 DEG C.

Description

200914557 IX. INSTRUCTIONS OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to an anti-bridging agent, a resin composition comprising the anti-bridging agent, and the use of the resin composition in a powder coating composition, comprising the anti-5 bridge Powder coating composition, powder coating composition comprising the anti-bridging agent, method for producing a coated substrate using the powder coating or powder coating composition, coated substrate comprising the anti-corrosion The crosslinker composition of the bridging agent, the anti-bridging agent-coated colorant particles, the anti-bridging agent-coated filler particles, and the anti-bridging agent as the anti-yellowing agent. 10 [Prior Art] Powder coatings are generally known in the art and are described, for example, by Misev(R) in Powder Coatings, Chemistry and Technology, John Wiley and Sons, Chichester, 1991. In general, it is an object to provide a substrate having a heat curable powder coating composition 15 and thereafter, the powder coating composition is cured to obtain a coating layer. Curing often occurs at high temperatures. The desired properties of the powder coating include improved optical properties, mechanical properties, chemical resistance to solvents (e.g., diphenylbenzene, acetone, alcohol), moisture resistance, heat resistance, and outdoor use. 20 Optical properties include, without limitation, the appearance of light, gloss, light diffusing, transparency, translucency, or opacity (also known as hiding power). Mechanical properties include, without limitation, toughness, strength, impact resistance, scratch resistance, stiffness, or abrasion resistance. 200914557 Unrestricted outdoor use includes a combination of exposure to screaming air, warm or cold temperatures, rain, ice spirits, sandstorms, or the like: the condition. / Powder coating composition herein means a composition comprising at least a resin to a small one.九九 Powder coating composition herein means a mixture comprising at least a resin, at least a crosslinking agent, and at least a colorant or filler or a colorant and a filler. The powder coating composition contains a resin, a crosslinking agent, and is used for, for example, a coloring agent for aesthetic purposes. Some applications require high color loading to provide the necessary results. This is particularly the case when only the thin layer coating composition is applied. For example, home décor, pre-coated metal, kitchen items, and white items are typically applied in only one thin layer. However, once the color loading exceeds about 40 w/w %, and especially 15 to 50 w/w % (based on the total powder coating composition), the final coating often has Undesired nature. For example, flow, gloss, color coverage, turbidity, and/or aesthetic properties deteriorate. It has been suggested that once the amount of toner loading reaches a certain amount, it may no longer be evenly dispersed in the coating, thus causing unacceptable characteristics. It is also suggested that poor colorant 20 dispersion causes roughening of the coating surface and can result in poor flow, low gloss and turbid coating (Misev TA, Powder Coatings, chemistry and Technology, John Wiley and Sons, Chichester, 1991). . WO2006/066764 discloses a composition suitable for powder coating compositions comprising at least one resin and at least one dispersant. 200914557 It is known that dispersants have a tendency to reduce the powder stability of powder coating compositions or powder coating compositions, especially at high pigment loadings. As used herein, 'high color loading amount' means a toner amount of 40 w/w % or more, particularly 45 w/w % or more, and particularly 50 w/w % or more. It is based on a total of 5 powder coating compositions. There is a need for a powder coating composition having acceptable physical properties, particularly acceptable powder stability. There is a further need for a powder coating composition having a color loading between which it has acceptable physical properties. In particular, there is a need for a powder coating composition comprising a tree grease, a crosslinking agent, and a high color loading of an acceptable powder. SUMMARY OF THE INVENTION The present invention provides an anti-bridging agent having the general formula Xn-Ym, wherein the X-based is compatible with the colorant particles and/or the filler particles, wherein the Y-based and the 15-polymer have an affinity group. And wherein η is an integer from 1-3, and m is an integer from 1 to 4, characterized in that the Tg of the anti-bridging agent is at least 30 °C. The use of the anti-bridging agent in accordance with the present invention in powder coating compositions or powder coating compositions results in acceptable powder stability of such compositions. All of the compositions of the present invention comprise at least one anti-bridging agent. 20 As used herein, "anti-bridging agent" refers to a substance that reduces the bridging of toner particles by resin. Preferred anti-bridging agents are used during the preparation of the compound and in the early stages of powder coating flow and solidification. The preferred anti-briding agent for use herein has the general formula Xn-Ym, wherein X is a reactive group with a colorant, a Y-based resin soluble group, η is an integer of 1 to 3, and m 7 200914557 is 1 to 4 is a positive number. Preferably, it is a whole number of well-being and claws (1). The reactivity or affinity of the chiral particles can be measured by the __) adsorption isotherm. Resin, Er Er liquid medium makes the mixed 』 』 财 财 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , . Thereby, the amount of the component to which the needle can be attached can be calculated. The affinity of the x-base and the colorant particles is calculated from the enthalpy of the uterine energy base. If the affinity and resin functionality 1 are sufficient, the anti-bridging agent will preferentially adhere to the colorant surface and avoid a large amount of resin-color interaction. Preferably, the fluorenyl group is compatible with the polymer comprising the polymer functional group, and more preferably the polymer of the present invention is compatible with the powder coated composition of the present invention. The ΑX radical has a higher chemical affinity for the colorant and/or the surface of the ^ 15 surface due to its heterogeneity compared to the affinity for the polymer containing the polymer functional group. In the aspect of the invention, at least 70 mol%, preferably at least 8 mol%, more preferably at least 90 mol%, of the total amount of anti-bridging present in the composition according to the invention χη—Ym, where (4) and melon... The Y group of the anti-bridging agent may have, for example, a linear or nearly linear, branched, green or dendritic structure, preferably a linear structure. The glass transition temperature (Tg) of the anti-bridge agent is at least 3 ° C, preferably at least 35 ° C, preferably at least 40 ° C, preferably at least 4 ° C, preferably to 丨, 5 〇. °C, preferably at least 55 ° C, preferably at least 6 ° C, preferably from 65 ° C, preferably at least 70 ° C. 200914557 The glass transition temperature (Tg) of the anti-bridge agent is preferably less than 10 〇c>c, preferably less than 90 ° C, preferably less than 80 ° C, preferably less than 7 〇〇 c, Preferably less than 60. (:, and preferably less than 50oC. In one aspect of the invention, the glass transition temperature (Tg) of the anti-bridging agent is preferably in the range of 30 ° C to 90 ° C, preferably 35. (: To 8 〇. 〇, preferably 40 ° C to 70 ° C, preferably 45 ° C to 65 ° C. Y base system due to its characteristics compared with colorants and / or filler particles, for the inclusion of polymers Functional group polymers have a higher affinity for chemical affinity. Examples of suitable Y groups are polyester, polyacrylate or polyurethane 10 polymer chains. Preferably, the anti-briding agent comprises a polymer. And/or the crosslinking agent is reactive with a reactive group Z. Preferably, the reactive group 2 has a reactivity similar to that of the polymer functional group or the crosslinking agent, and has a higher affinity than the coloring material. ^,, the base X is lower in affinity with the colorant/filler particles. This allows the anti-bridging agent 15 to be built into the polymer network formed by the polymer and the cross-linking agent during curing. It becomes part of the polymer network. Examples of suitable reactive groups Z for this purpose include nucleus, amine, epoxy, isogastric acid, liver, and alcohol. Aliphatic, branched aliphatic, and/or aliphatic and/or aromatic polycarboxylic acids or suitable Y groups may, for example, be a condensation reaction between a 20 or cycloaliphatic polyol and an aliphatic or cyclist The polyol and the acid filament are preferably used as an acid or an anhydride to form a polyester having a free hydroxyl group. The acid suitable for the Y group contains a heteropolycarboxylic acid terephthalic acid 9 200914557 2,6-naphthalene Dicarboxylic acid, 4,4'-oxybisbenzoic acid, 3,6-diphthalic acid, tetrachlorophthalic acid, tetrahydrophthalic acid, trimellitic acid, pyromellitic acid, hexahydrogen Phthalic acid (cyclohexanedicarboxylic acid), hexa-gas ylidene tetrahydrophthalic acid (HET acid), phthalic acid, azelaic acid, sebacic acid, stilbene dicarboxylic acid, hexanedicarboxylic acid a mixture of succinic acid, maleic acid, fumaric acid, itaconic acid, or the like. These acids may be used as such, or may be anhydrides, acid chlorides, and/or lower alkyl esters as long as they are available. Preferably, the polyester is used at least in the form of a C1-C3 alkyl ester. Preferably, the polyester comprises at least an isophthalic acid unit and/or a terephthalic acid unit. 10 Trifunctional or higher functionality Acids can also be used. Examples of such suitable acids include trimellitic acid and pyromellitic acid. Hydroxycarboxylic acids (for example, 12-hydroxystearic acid or hydroxypivalic acid) can also be used. It can also be used if desired. Examples of such acids include benzoic acid, 15 tert-butylphthalic acid, hexahydrobenzoic acid, and saturated aliphatic monocarboxylic acids. Suitable polyols for polyester polymer tail Y A polyol which can be reacted with a carboxylic acid (examples of which are shown above) to obtain a polyester, which specifically comprises a diol, for example, an aliphatic diol. Examples of the diol include ethylene glycol, propane-1, 2-di Alcohol, propane-1,3-diol, butane-1,2-diol, butane-1,4-diol, butane-1,3-20 diol, 2,2-dimethylpropane Glycol-1,3 (neopentyl glycol), hexane-2,5-diol, hexane-1,6-diol, 2,2-bis-(4hydroxy-cyclohexyl)-propane (hydrogen) Human bisphenol-A), 1,4-dimethylol cyclohexane, diethylene glycol, dipropylene glycol, 2,2-bis[4-(2-hydroxyethoxy)-phenyl]propane, Hydroxyl pivalate of neopentyl glycol, 2-ethyl, 2-butylpropanediol-1,3 (butylethylpropanediol), 2-ethyl, 2-mercaptopropane 10 20091455 7 diol-1,3 (ethylmethylpropanediol), and 2-methylpropanediol ΎΜρ-diol). Alcohols of three or higher functionality can be used to obtain branched polyesters. Examples of such suitable polyols include glycerol, hexanetriol, trimethylolethane-5, trimethylolpropane, tris-(2-hydroxyethyl)-isocyanurate, pentaerythritol, and Sorbitol. In the embodiment of the anti-bridging agent according to the present invention, the molar weight is at least 1000 g/mole. The molar weight (?n) of the anti-bridging agent is less than 7000 g/mole, preferably 10 or less, more preferably less than 5,000, and preferably less than 45 g/m. The anti-bridging agent has a molar weight (Μη) of more than 1〇〇〇, preferably more than 1,500, preferably more than 2,000, preferably more than 25〇〇, and more preferably more than 3000g/ Moor. In another aspect of the invention, the molar weight (Μη) of the anti-bridging agent is preferably more than 2_, preferably more than 2, preferably more than 3〇〇〇 more than 3500, and preferably More than 4 grams / mole. Preferably, the anti-bridging agent herein preferably comprises at least one pair of colorant surfaces having a high anti-suitable reactive group comprising phosphoric acid, sulfuric acid, sulfonic acid,

The reactive group X. A group of side acids, maleic anhydride, and vinegar.

The flow during the 200914557 period can be improved. According to the anti-bridging agent of the present invention, γ is derived from at least one polyol monomer selected from the group consisting of neopentyl glycol, ethylene glycol, diethylene glycol, propylene glycol, trimethylolpropane, and glycerol, and at least A polyester produced from a polycarboxylic acid monomer selected from the group consisting of terephthalic acid, isophthalic acid, phthalic acid, hexanediol, succinic acid, and trimellitic anhydride. The invention further relates to a resin composition. The resin composition according to the invention is suitable for use in a powder coating composition and comprises: 10 - at least one resin, and - at least one anti-bridging agent according to the invention. The amount of the anti-bridging agent in the resin composition is preferably at least about 〇 1 w/w %, more preferably at least about 0.3 w/w %, more preferably at least about 0.5 w/w %, more preferably at least about 1 w/w %, based on the total amount of the resin in the resin composition. The amount of the anti-bridging agent is preferably about 5 w/w % or less based on the total amount of the resin in the resin composition. The present composition according to the present invention comprises at least one resin. This resin is suitable for use in powder coating compositions. Examples of suitable polymers include, without limitation, acid functional polymers selected from the group consisting of polysodium polyacrylates, polyamines, polyamidiamines, polyamine phthalates. And a copolymer of polycarbonate, and the like, such as a copolymer of a polyester-polyimine, and a copolymer of a polyester-polyamide. Preferably, the polymer is selected from the group consisting of polyesters, polyacrylates, polyamines, polyamines, and polycarbonates. 12 200914557 Preferably, the resin has an acid or hydroxyl value of 20 and 200 mg KOH/g resin, more preferably between 20 and 120 mg KOH/g resin. The number average molecular weight (Mn, g/mole) of the resin is preferably between about 7,000, 〇〇〇 and about 7,000, more preferably between about 14 〇〇 and about 6 。. 5 Preferably, the resin is a non-crystalline solid at room temperature. - The resin preferably has a viscosity of less than 200 Pa.s (at 160. (:, Rheometrics CP 5 measurement)' is preferably less than 150 Pa.s. The glass transition temperature (Tg) of the resin is preferably greater than about 2 〇 °c, more preferably greater than about 35 ° C, more preferably greater than about 45 ° C. The Tg of the resin is preferably less than about 1 〇〇, more preferably less than about 10 85 ° C 'better Less than about 80 ° C. It can be determined by differential scanning calorimetry (DSC) at a heating rate of 5 ° C / min. The resin itself can be prepared in a manner known to those skilled in the art, for example 'see "Powder Coatings, Chemistry and Technology", TAMisev, John Wiley and Sons, 1991, generally the entire book, specifically, Chapter 2, which is incorporated herein by reference. The resin to be used is selected from the group consisting of polyester resins, propylene tree I resin resins, polyester phthalamide resins, epoxy resins, and the like.

Preferably, the resin used herein is selected from the group consisting of a polyester resin, an acrylic resin, a polyester amide resin, and the like. More preferably, the resin is selected from the group consisting of polyester, 20 more preferably an acid- and/or a hydroxy-functional polyester, more preferably a carboxylic acid-based polyester D polyester polyester resin and an anti-bridging agent γ The base polyesters can be based on the condensation of linear aliphatic, branched aliphatic, and cycloaliphatic polyols with aliphatic, cycloaliphatic and/or aromatic 13 200914557 polycarboxylic acids and anhydrides. The ratio of polyol to acid or anhydride is such that the acid or anhydride is present in excess of the alcohol to form a polyester having a free carboxyl group. Suitable acid and anhydride monomers for forming the polyester resin include, for example, isophthalic acid, terephthalic acid, phthalic acid, 2,6-naphthalene dicarboxylic acid, 4,4'-oxy 5 bisbenzene Formic acid, 3,6-dioxaphthalic acid, tetrachlorophthalic acid, tetrahydrophthalic acid, trimellitic acid, pyromellitic acid, hexahydroterephthalic acid (cyclohexanedicarboxylic acid) ), hexahydromethylenetetrahydrophthalic acid, benzoic acid, sebacic acid, sebacic acid, decane dicarboxylic acid, adipic acid, succinic acid, maleic acid, fumaric acid, and The monomer of the mixture. These acids may be used as such or as long as they are available as anhydrides, acid chlorides, and/or lower anhydride esters. Preferably, the polyester is based on at least one of isophthalic acid and/or terephthalic acid. Trifunctional or higher functional acids can also be used. Examples of suitable such acids include trimellitic acid or pyromellitic acid. These three or higher functional acids can be used as end groups or to obtain branched polyesters. The hydroxycarboxylic acid and/or the selective lactone may also be used, for example, 12-hydroxystearic acid, pentate valeric acid, and ε-caprolactone. Monocarboxylic acids can also be used if desired. Examples of such acids are benzoic acid, butyl benzoic acid, hexahydrobenzoic acid, and saturated aliphatic monocarboxylic acids. A useful polyester, particularly a diol, which can be reacted with a carboxylic acid to obtain a polyester, 20 comprises an aliphatic diol. Examples are ethylene glycol, propane-1,2-diol, propane-1,3-diol, butane-1,2-diol, butane-1,4-diol, butane-1,3 -diol, 2,2-dimercaptopropanediol-1,3 (neopentyl glycol), hexane-2,5-diol, hexane-1,6-diol, 2,2-double -(4hydroxy-cyclohexyl)-propane (hydrogenated bisphenol-indole), 1,4-dimercaptool cyclohexane, diethylene glycol, dipropylene glycol, 2,2-bis[4-(2- Hydroxyethoxy)-benzene 14 200914557 base] propane, neopentyl glycol hydroxypivalate, 2-ethyl, 2-butylpropanediol-1,3 (butylhexyllacane), 2_ethyl, 2_mercaptopropanediol_13 (ethylmethylpropanediol)' and 2-mercaptopropanediol_丨, 3 (Mp_diol). A di- or more g-energy alcohol can be used to obtain a branched polyester. Examples of such polyhydric alcohols which are suitable for combination include glycerol, hexanetriol, trimethyl alcohol, trimethyl alcohol (tetra), tris-(2-diethylidene)-isocyanuric acid vinegar. , pentaerythritol, and sorbitol. Poly® oxime can be prepared by conventional esterification or transesterification in the presence of a conventional esterification catalyst (e.g., dibutyltin oxide or tetrabutyl titanate) according to conventional procedures. The preparation conditions and Cooh/oh ratio can be selected to obtain a final product having a particularly desired acid number and/or hydroxyl number. The acrylic acid polyacrylate resin and the Y-based polyacrylate of the anti-bridge agent may contain a polymerization reaction product of an acrylate monomer. Suitable acrylate monomer package 5 contains (meth)acrylic acid, methyl (meth) acrylate, methyl (meth) acrylate, butyl (meth) acrylate, propyl (meth) acrylate, ) 2-ethylhexyl acrylate, cyclohexyl (meth) acrylate, decyl acrylate, isodecyl acrylate, benzyl methacrylate, and (曱) The hydroxy hydroxyalkyl group is exemplified by, for example, hydroxyethyl (meth) acrylate, and (hydroxy) hydroxy propyl hydrazide and/or (hydrazino) acrylonitrile | glycidyl acetate or glycidyl ether. Preferably, the polyacrylate is substantially free of vinyl chloride. Polyacrylates can be obtained by known methods. In such methods, comonomers such as styrene, maleic anhydride/anhydride, and small amounts of ethylene, propylene, and acrylonitrile can be used. Other vinyl or alkyl monomers (such as octene, triallyl isocyanurate, and benzene 15 200914557 diallyl dicarboxylate) can be added in small amounts. The epoxy group-containing polyacrylate can be obtained by using (meth)acrylic acid glycidic vinegar in the synthetic polyacrylate. The acid group-containing polyacrylate is generally obtained by copolymerization of a desired amount of an acid such as (meth)acrylic acid, maleic acid or fumaric acid. The transacrylate-containing polyacrylate can be obtained by copolymerization of a desired amount of a monomer having a transradical group such as hydroxyethyl (meth)acrylate and/or hydroxypropyl acrylate (meth) acrylate. The thiol group-containing polyacrylate can be obtained by copolymerization of a sufficient amount of a monomer having a preferably blocked thiol group. The monomer having a (blocked) thiol group comprises a thiol-ethyl (meth) acrylate, a thiol-propyl (meth) acrylate, and a mixture of the same, S-ethyl decyl ester. After the polymerization, the ethyl hydrazide group can be deblocked by hydrolysis. 15 Polyacrylate containing an ethyl acetonate group can be obtained by copolymerization of ethyl hydroxypyruvate of 2-hydroxyethyl acrylate. The Tg of the polyacrylate resin is generally between about 30 ° C and about 120 ° C. When Tg is at the higher end of the range, a relatively large amount of crosslinker can be used in the binder composition. For optimal storage stability, the Tg is preferably 20 to 50 °C. For polymer processing, the Tg is preferably less than 100 °C. Typically, the viscosity of the polyacrylate resin is between 100 and 8000 dPas (measured at 158 °C; Emila). Polyacrylates (e.g., epoxy, carboxyl, and hydroxy-functional polyacrylates) are described in U.S. Patent No. 3,752,870, U.S. Patent No. 16, 2009, the disclosure of which is incorporated herein by reference. Case 1,333,361. The polyamine of the polyamine resin and the γ group of the anti-bridge agent may comprise a polycondensation reaction product (or residue) of at least 5 diamine monomers and at least one dicarboxylic acid monomer. The polyamine can be based on an amine and a carboxylic acid, or the polyamine can be, for example, based on an amine mixed with more than one carboxylic acid, or it can be based on a carboxylic acid mixed with more than one amine. Or it may be based on a mixture of more than one ten amines and more than one carboxylic acid. However, it is preferred to use a polyamine which is based on 2 or 4 kinds of diamines and 1 to 3 kinds of dicarboxylic acids. Suitable dicarboxylic acid monomers include, for example, dicarboxylic acids having from 3 to about 4 carbon atoms, and more preferably selected from dicarboxylic acids, aromatic dicarboxylic acids having from 8 to 14 carbon atoms, An aliphatic dicarboxylic acid having 4 to 12 carbon atoms, and 15 or preferably a cycloaliphatic dicarboxylic acid having 8 to 12 carbon atoms are preferred. The dicarboxylic acid monomer can be branched, non-linear, or linear. Examples of suitable t-acid monomers are, for example, phthalic acid, isophthalic acid, terephthalic acid, cyclohexane dicarboxylic acid, naphthalene 2,6 dicarboxylic acid 'cyclohexane diacetic acid, two Phenyl-4,4'-dicarboxylic acid, phenylene di(oxyacetic acid), 20 sebacic acid, succinic acid, adipic acid, sebacic acid, and/or sebacic acid. The diamine monomer can be, for example, an aliphatic, cycloaliphatic, aliphatic-aromatic, or aromatic property. The diamine monomer may comprise an aliphatic diamine having, for example, 2 to 12 carbon atoms. The aliphatic diamine may also contain an aromatic group in the molecule. The sulfhydryl amine system means a compound in which an amine group is directly coupled with an aliphatic chain. Aro 17 200914557 Aromatic amine means a compound in which an amine group is directly coupled to an aromatic ring structure. The aliphatic diamine also contains a cycloaliphatic diamine such as piperazine. Examples of suitable aliphatic diamines include, for example, isophordiamine, 1,2-ethanediamine, 1,3-propylenediamine, 1,6-hexamethylenediamine, 1,12-twelf Azide diamine, 1,4 cyclohexane 5-dimethylamine, piperazine, p-xylylenediamine, and/or m-xylylenediamine. The amine component may also comprise branched components to obtain branched polyamines. Suitable examples include, for example, 'di-alkylene-triamine, such as bis-ethylidene triamine, di-alkylene-tetramine, di-alkylene-pentamine, bis-hexamethylene- a triamine, a polyfunctional acid such as 1,3,5-benzene tribasic acid, a trimellitic acid needle, and a 10% tetrabasic acid liver, and a polyfunctional amino acid such as aspartame Acid, and glutamic acid. The 15 20 anti-bridge agent can be added to the resin at any time, but is preferably added during resin synthesis or as the resin leaves the reactor. "During the resin synthesis" means that the anti-bridging agent is added before the resin leaves the synthesis reactor. For example, the anti-bridging agent can be added at the time of resin synthesis or after synthesis but before the resin leaves the reactor. Typically, the resin will be partially or completely cooled before leaving the synthesis reactor. Preferably, the resin is partially cooled prior to leaving the reaction. The anti-jointing agent is preferably applied to the resin tree (4). "Before the resin leaves the reactor, it means that the resin has a == property and is about to turn away from the reactor. Preferably, the anti-net 1 is added about 30 minutes before the resin leaves the reactor. In addition, it is preferred that the individual components are preferably added to the resin when the anti-bridging agent is applied to the resin synthesis device (the resin is initially produced therein). 18 200914557 In addition, other components It can be used in the resin composition, the powder coating composition, and the powder coating composition according to the present invention, for example, a flow control agent, a catalyst, a dispersing agent, a photostabilizer, a biocide, and a deaerator. It can be used in the powder coating composition according to the present invention. For example, primary and / or secondary antioxidants, uv stabilizers, for example, bismuth, sterically hindered compounds, phosphinic acid, sub-acid The salt, sulphur mystery, HALS compound (hindered amine light stabilizer), or aromatic amine may, for example, be used as a stabilizer. In one embodiment of the resin composition according to the present invention, a resin-based polyester 10 resin. this In one embodiment of the resin composition of the invention, the Y-based group of the resin and the anti-bridging agent is composed of at least 50 w/w% of the same monomer. The manner in which the bridging agent is compatible with the polymer is improved. The monomer is at least 50 w /w% is a polyol and a polycarboxylic acid and an anhydride as described in the section below the "Polyester" heading. In one embodiment of the resin composition according to the present invention, the Y group of the resin and the anti-bridge agent At least 50 w/w % is composed of the same monomer selected from the group consisting of neopentyl glycol, ethylene glycol, diethylene glycol, propylene glycol, trimethylolpropane, glycerol, terephthalic acid, a group consisting of isophthalic acid, phthalic acid, adipic acid, 20 succinic acid, and trimellitic anhydride. In addition, at least 50 w/w % of the monomer may be selected from the "polyacrylate" heading herein. The acrylate monomer. In addition, at least 50 w/w % of the monomer may be selected from the diamine monomer and the dicarboxylic acid monomer described herein under the heading "Polyamine". Further related to a powder coating composition, according to which the powder coating composition comprises - at least one suitable for powder a resin for a coating composition, at least one anti-bridging agent according to the present invention, 5 - and a crosslinking agent. Preferably, the resin composition is present in the powder coating composition in an amount of 50 to 99 parts by weight, and Preferably, the amount of the crosslinking agent present in the powder coating composition is from 1 to 50 parts by weight, wherein the sum of the amounts of the resin composition and the crosslinking agent is 100 parts by weight. ίο Anti-bridging in the powder coating composition Preferably, the amount of the agent is at least about ο. ο 1 w/w %, more preferably at least about 0.1 w/w %, more preferably at least about 0.3 w/w %, more preferably at least about 0.5 w/w %, It is based on the total powder coating composition. The amount of the anti-bridging agent is preferably about 15 w/w % or less, more preferably about 10 w/w % or less, more preferably about 5 w / w % or less, based on the total powder 15 final coating composition. The powder coating composition of the present invention comprises a crosslinking agent. Any crosslinker or crosslinker mixture suitable for use with (i.e., reacting with) the resin can be used herein. Various crosslinkers or crosslinker mixtures can be used herein. Suitable types of crosslinking agents include epoxy resins, polyamines, (blocked) isocyanates, amine 20 resins, polycarboxylic acids, acid anhydrides, polyphenols, crosslinkers containing β-hydroxyalkylguanamine units. (for example, a compound like Primid®), and mixtures thereof. Examples of suitable compounds include triglycidyl isocyanurate (TGIC), polyisocyanates (for example, IPDI (isophorone diisocyanate) derivatives terminated with caprolactam, uretdione of IPDI, (toluene) Derivatives of diisocyanate, 20 200914557 TMXDI (tetramethyl xylene diisocyanate) derivative, or its terpolymer), such as 'A-step acid resin or linear ageing type , an amine-based resin (for example, an alkylated melamine or benzoguanamine resin s), an alkylated melamine such as hexamethoxy-methyl melamine (hydrazine), trimellitic acid triglycidyl ester, Ring 5 oxidized vegetable oil, such as epoxidized linseed oil, and epoxy resin based on bisphenol a, benzoguanamine (derivative), and the like. It may be necessary to cure the composition comprising the resin and the crosslinking agent to form a coating. Examples of the curing method include heat curing, curing with electromagnetic radiation, such as UV- or electron beam curing. Depending on the nature of the functional group, a two (double 10 weight cure) or more curing method can also be used. The powder coating composition according to the present invention preferably has 2 Å. The solid composition of the glass transition temperature (Tg) between C and 2 〇 〇 c. Solids here and after are meant to mean 18. (: a solid compound at room temperature up to 23 〇C and at atmospheric pressure of typically about 1 bar. A system with less than 20 ° C yielding less material 15 and/or chemical stability, And more than 200 ° C Tg caused a composition that is more difficult to process. More preferably, Ding § 4 〇. (: and 1 〇〇. (::, because this range causes chemical stability of the composition And a good combination of processing and handling properties. More preferably, the powder coating composition has a Tg system higher than 45. More preferably,

The Tg system is above 50 °C. In general, the higher the Tg, the better the physical stability such as powder stability. A glass transition temperature (Tg) of at least about 40 °C typically results in a stable powder suitable for storage under the most general conditions. In addition, 'high Tg is advantageous because it generally results in increased hardness of the final coating. Tg can be 5 by differential scanning calorimetry (DSC). (:/min scan 21 200914557 Velocity measurement. In one embodiment of the powder coating composition according to the present invention, the crosslinking agent comprises a β-alkyl group based amine unit. Surprisingly, the use of an anti-bridging agent reduces the inclusion. The composition of the cross-linking agent containing the hydroxyalkylguanamine 5 unit is yellowed under high heating conditions. Examples of high heating conditions include heating excess during curing, such as temporary heating peaks, or extended exposure. Curing conditions, for example, due to problems with the curing oven, leave the material in the furnace longer than the planner. The reduced yellowing can be measured using the thermal stability test described here. 10 The color values referred to in the application use CIE. 1976 L, a*, b* color value (CIE. International Commission on Illumination) measured value b* is the measured value for yellowing: b* is higher (larger positive value), the color of the measuring surface is higher The smaller the difference in b* (b*), the less yellowing occurs. 15 In the case of a coating obtained by coating a composition containing a white colorant (such as Ti02), the higher 6 E The value corresponds to less white. β- Suitable examples of sulfhydryl guanamine crosslinkers are described in EP 0 322 834 Β 1, page 2, lines 12-36. Suitable commercially available β-hydroxyalkylguanamine crosslinker systems, for example, ruthenium, osmium , Ν', Ν'-tetrakis-(2-hydroxyethyl)-hexanediamine 20 (Primid® XL-552). The composition according to this embodiment of the invention preferably comprises a substance capable of reacting with β-hydroxyl groups. a polymer (resin) of a functional group reactive with an alkylguanamine unit. A polymer comprising a polymer functional group reactive with a β-hydroxyalkylguanamine unit may comprise a reaction with a β-hydroxyalkylguanamine unit Functional Groups 22 200914557 Any polymer. The functional group capable of reacting with the β-hydroxyalkylguanamine unit comprises a tick functional group, an isocyanurate, an anhydride, preferably a few acid functional groups are used. 5 Examples of Polymer Functional Groups Reactive with β-Hydroxyalkylguanamine Units Suitable polymers include, without limitation, acid functional polymers, wherein the polymer is selected from the group consisting of polyesters, polyacrylates, poly a copolymer of guanamine, polyamidiamine, polyurethane, and polycarbonate, and the like (such as polyester _ a group of a quinone imine copolymer, and a polyester-polyamine copolymer. Preferably, the polymeric one comprising a polymer functional group reactive with the β-hydroxyalkylguanamine unit is selected from the group consisting of polyesters a polyacrylate, a polyurethane, and a polycarbonate. A suitable polyester comprising a functional group reactive with a β-hydroxyalkylguanamine unit can, for example, be a linear aliphatic, branched fat The condensation of the family, and the cycloaliphatic multi-fermented acid and the aliphatic, cycloaliphatic and/or aromatic polycarboxylic acid or its anhydride should be based on the ratio of the polyol and the acid or anhydride. Or the anhydride is in excess of the alcohol to form a polyester having a free carboxyl or anhydride group. The present invention further relates to the use of an anti-bridging agent according to the present invention as an anti-yellowing agent in a powder coating composition comprising - a crosslinking agent having a β-pyridylamine unit, 20 _ and A polymer comprising a functional group reactive with a β-hydroxyalkylguanamine unit. The use according to the invention is provided if the anti-bridging agent is applied to a powder coating composition or a powder coating composition comprising the following to reduce the desired effect of yellowing, 23 200914557 having a β-hydroxyalkylamine unit A crosslinking agent, - and a polymer comprising a functional group reactive with a β-hydroxyalkylguanamine unit. The invention further relates to a powder coating composition comprising a powder coating composition according to the invention comprising - a powder coating composition according to the invention, and - at least 5 w/w% 2 color or color A mixture of a material and a filler, wherein the sum of the colorant and the filler is reduced by 5 w/w%, based on the reading composition. The % 'colorant' used herein includes a colored filler, an added sword, and a coloring agent. The frost group is intended to be limited by theory, and (4) the powder coated with a high color load is sufficient for eight problems not caused by the insufficient reading of the toner particles. Fact 15 20 Dispersion 1 Series? Well, f / person's place, the inventor of the present invention found that the intersection of the pigment particles causes the powder to coat the constituent resin and the colorant particles. In particular, this is the case where the binder resin molecules bridge the colorant role. The rough wave is determined by the appearance of the coating to play the role of 'color material, which means that the composition is given: there is a property. This is used for the color of the group _ < color particles. Suitable coloring material U 'such as 'white color material, pearl color material, better color material system, special effect color material, and fluorescent color material used. This Qin, zinc sulfide, rhyme zinc, 4彳The difficult color material used herein comprises oxidized emulsified iron, zinc oxide, chromium oxide, shishi stone, 24 200914557 sulfuric acid wrong, carbonic acid #5, and the like. More preferably, the color material here contains titanium dioxide. Examples of colorants that can be used include KronosTM 2160, 2340, 2315, 3645, 2222, 2305 (available from Kronos); 5 Ti-PureTM 706, 960 (available from Du PontTM); Tiona 595 ( Available from

MillenniumTM); LithophoneTM 30%; and mixtures thereof. Examples of suitable fillers for use herein include CaC03, BaS04, Al(OH)3 and vermiculite. It will be apparent to those skilled in the art that certain fillers can also be used as colorants, 10 and vice versa, for example, 'CaC〇3 can be used as a colorant and filler. Preferred fillers for use herein are inorganic fillers. In one aspect of the powder coating composition according to the present invention, the composition further comprises at least 10 w/w% of a colorant or a mixture of a colorant and a filler, wherein the sum of the colorant and the filler is at least 1 〇 w/w %, Based on total composition 15 . In one aspect of the powder coating composition according to the present invention, the composition comprises at least 15 w/w% of a colorant or a mixture of colorants and fillers, wherein the sum of the colorant and the filler is at least 15 w/w%, which is total The composition is a benchmark. In one aspect of the powder coating composition according to the present invention, the composition package 20 contains at least 20 W/W% of a colorant or a mixture of a colorant and a filler, wherein the total color composition is based on the weight. In one aspect of the powder coating composition according to the present invention, the composition comprises at least 30 w/W% of a colorant or a mixture of a colorant and a filler, wherein the sum of the colorant and the filler is at least 3 Gw/w%' of the total composition The object is the benchmark. 25 200914557 In one embodiment of the powder coating rabbit composition according to the present invention, the composition comprises at least 40 w/w% of a colorant or a mixture of colorants and fillers, wherein the sum of the colorant and the filler is at least 4 〇 w/w % It is based on the total composition. 5 In terms of the powder coating composition of the present invention, the composition comprises at least 45 w/w% of a colorant or a mixture of colorants and fillers, wherein the sum of the colorant and the filler is at least 45 w/w%, which is total The composition is a benchmark. In one aspect of the powder coating composition according to the present invention, the composition comprises at least 5 Gw/w% of a colorant or a mixture of colorants and fillers, wherein the colorant 1 and the filler mixture are at least 5 〇 w/w %, Based on the total composition. In one aspect of the powder coating composition according to the present invention, the composition comprises 90 w/w% or less of a colorant or a mixture of a colorant and a filler, wherein the sum of the colorant and the filler is 90 w/w% or less, Based on the total composition. 15 In terms of the powder coating composition of the present invention, the composition comprises 75 w/w% or less of a colorant or a mixture of a colorant and a filler, wherein the sum of the colorant and the filler is 75 w/w% or less. It is based on the total composition. In one aspect of the powder coating composition according to the present invention, the composition package contains 60W/W% or less of a colorant or a mixture of a colorant and a filler, wherein the sum of the colorant and the filler is 60 w/w% or less. It is based on the total composition. The powder coating composition according to this composition may, for example, comprise 15 w/w % of a colorant and 1 g w/w % of a filler' of a simple powder coating composition of 26 200914557. In one aspect of the powder coating composition according to the present invention, the composition comprises, in addition to the crosslinking agent, the polymer and the anti-bridging agent, 3 〇w/w% of 〇2 and 1〇w/w% of CaCQ3' Based on the total powder coating composition. 5 A powder coating composition according to this composition may, for example, comprise 30 w/w % of a colorant and 10 w/w % of a filler based on the total powder coating composition. The amount of filler can be increased. Thus, less resin can be used, and an acceptable coating can still be obtained. For example, to reduce benzene. For example, 3 5 w/w 10% butyl hydrazine 02 and 20 w/w % CaC03 (based on total powder coating composition) or 33 w/w % Ti02 and 20 w/w % BaS04 (in terms of The total powder coating composition is based on the basis). In one aspect of the invention, a powder coating composition is provided comprising 15 - a polymer comprising a functional group reactive with a beta-hydroxyalkylguanamine unit, - comprising a beta-hydroxyalkylguanamine unit A binder, at least one anti-bridge agent - at least 10 w/w % of the filler, based on the total composition. 2) The advantage of the coating prepared from the powder coating composition of the present invention is reduced yellowing. The invention further relates to a method of making a coated substrate comprising the steps of: - providing a substrate, 27 200914557 - enabling the recording of the substrate according to the invention to obtain a covered substrate, - The composition on at least a portion of the covered substrate is cured. It may be necessary to cure the composition comprising the polymer and the crosslinker to form a coating layer. Examples of the curing method include heat curing, which is cured by electromagnetic ray, such as UV- or electron beam curing. Depending on the nature of the functional group, a two (double cure) or more curing method can also be used. Further, examples of suitable materials for the substrate include metal, (Qian) steel, prayer iron, Ming, other metal alloys, glass, ceramics, wood, fiberboard (such as, 10 MDF (medium fiber board)), Monuments, plastics, composites, and the like. The substrate can be, for example, at least a portion of: garden furniture, cans, a coil, a door, a door frame, a window frame, a heater, a piece of furniture, a building board, or a building frame. The invention further relates to a fully or partially coated substrate comprising a coating based on a composition according to the invention, which composition is fully or partially cured. The improved outdoor resistance of the formed powder coating can be as high as 60 by the qUV_b exposure test (preferably in accordance with ASTM G53-88). The gloss of 5〇% is confirmed by the long time of 20%. In one embodiment of the coated substrate according to the present invention, the coating has a thickness of 5 μm or less and a cover thickness of 5 μm or less. As used herein, "covering thickness," refers to the minimum thickness of a particular coating composition that provides sufficient color coverage to hide the substrate. The thickness of the cover can be borrowed from 28 200914557 by the garment from top to bottom 2 gong Ι Ι 〇 之 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 The layer is evaluated to determine the point at which the color is no longer visible. The thickness of this point is the thickness of the coating. The coating of the present invention has a thickness of 60 μm or less. Preferably, the coating thickness is 50 μm or less, and the thickness of the coating is preferably 45 μm or less. The coated coating according to the present invention has a long wave roughness of 0.8 μm or less. 10 15 \, 20 When used herein, "long-wave roughness," means the surface roots of the surface of the surface with a wavelength of more than 5 micrometers. Long-wave roughness: It is better to measure 此8 μηι by measuring the surface topography of the white light interferometer_coated sheet and the 'low pass, Fourier transition of the measuring surface detailed in the actual (4) drop. Less long wave coarse sugar. Preferably, the coating therebetween has a 〇75 (four), more preferably a 〇 7 _, more preferably a long wave roughness of 0.65 μm or less. It has been surprisingly found that coatings with lower long-wave roughness show improved enthalpy. Gloss and low turbidity. As used herein, "short-wave roughness," refers in a similar manner to the root mean square roughness Rq of a coating surface determined by the spatial characteristics of a spatial wavelength of less than 5 microns. For example, in Hunt et al. , J_ Coat. Technol • Book 70, No. 880, page 45, (1998), this short-wave roughness is known to be related to the quality of the colorant dispersion and to the optical properties of the cured coating (eg, gloss) And turbidity) has a significant effect. Therefore, the dispersant is sometimes used to improve the dispersion of the colorant particles in the powder coating. The coating here preferably has 80 μm or less, more preferably 6 〇 μm or 29 200914557 Less, more preferably 5〇μηι or less. The coating here preferably has 60 or better, more preferably 7 or better, more preferably 80 or better 20° gloss ( It is measured by the Byk Gardner turbidity and gloss meter in a layer thickness of 60 μπι.) 5 The coating between the layers preferably has 300 or less, preferably 250 or less, more preferably 150 or less, more preferably 1 or less turbidity (by Byk Gardner turbidity-gloss meter thickness measurement of 60 μηι The aging tester (WOM) test has been carried out on the coating according to the invention. Preferably, the WOM test is carried out in accordance with iso 11341. In addition, the so-called 10 Florida natural weathering standard can be used to establish outdoor conditions. Effect of the layer Q UV-A and Q UV-B tests have been carried out on the coating according to the invention. Preferably, the QUV-A and QUV-B tests are carried out in accordance with ASTMG 53_88. Preferably, the resin, the colorant are included. And the composition of the anti-bridging agent has a viscosity of 15 stable at 200 。. That is, the anti-bridging agent reduces the viscosity change of the resin containing the resin and the colorant compared to the similar composition without the anti-bridging agent. As used herein, "stable viscosity" means a viscosity change of less than 25% during a period of 1 Torr once the composition is heated to 2 ° C, more preferably less than 10% during 1 〇 minutes. The viscosity stability of the compound without crosslinker was confirmed by a stress-controlled rheometer (MCR30®, Paar-Physica) by applying a fixed shear stress of i Pa for 1 hour. All measurements were made at 20 〇ν. And in a nitrogen atmosphere, use parallel plate geometry (diameter and gap) The invention is directed to a cross-linking composition comprising 30 200914557 - at least one cross-linking agent, and - at least one anti-bridging agent in accordance with the present invention. The crosslinker composition according to the present invention provides, when used in combination with a resin capable of reacting with a crosslinking agent to form a powder coating composition or a powder coating composition, at least partially overcomes the disadvantages of reduced powder stability of the composition. The present invention is further directed to a coated toner particle coated with an anti-bridging agent in accordance with the present invention. The invention further relates to a coated filler particle coated with an anti-bridging agent 10 in accordance with the present invention. The anti-bridging agent can be applied to the colorant or filler particles prior to the granulated synthetic resin. The coated filler particles or coated pigment particles obtained - when used in powder coating compositions - result in acceptable powder stability. In one aspect, the invention relates to the use of a resin composition in accordance with the invention in a powder coating composition. t Embodiment 1 The present invention will be further illustrated by the following non-limiting examples. Experimental paragraph 20 The anti-bridging agent is prepared synthetically as described in CA 2,300,990. 1) One of the anti-bridging agents, 'Y-based system is made from neopentyl glycol and terephthalic acid, X-based is -0-P02H2 (derived from phosphoric acid), and PCT 11 is 1888 'n=1 Moreover, and the Tg is 45 °C. 2) In one embodiment of the anti-bridging agent, the Y-based system is made from neopentyl glycol and p-benzene 31 200914557 dicarboxylic acid to form 'X-based-〇-P〇2H2 (derived from phosphoric acid)' and Mn々1245 g/ Mohr, n=1 and m=l, and Tg is 35. 3) In an example of an anti-bridging agent, Y is made from neopentyl glycol and terephthalic acid as 'X-based-〇-P〇2H2 (derived from phosphoric acid)' and Mr^^, 1766 5 g/ Mohr 'n=1 and m=l and Tg is 45 °C. 4) In one embodiment of the anti-bridging agent, the Y-based system is made of neopentyl glycol and terephthalic acid, the X-based system is 0-P02H2 (derived from phosphoric acid) and the river is 2067 g/mole. n = 1 and m = l and Tg is 56 ° C. 5) In one embodiment of the anti-bridging agent, the Y-based system is made of neopentyl glycol and p-benzene 10 didecanoic acid, X-series-0-P02H2 ( Derived from phosphoric acid), and Μη is 2347 g/mole, η=1 and m=l, and Tg is 62 °C. 6) In one example of anti-bridging agent, Y-based system is different from neopentyl glycol and Made of phthalic acid, X-based-0-P02H2 (derived from phosphoric acid), and Μη is in the range of 1200 to 5000 g/mol, η=1 and m=l. 15 7) Implemented in one of the anti-bridging agents For example, the Y-based system is made from neopentyl glycol and p-benzoic acid 7,5 mol% and adipic acid (based on the total amount of acid) to make 'X-based-0-P02H2 (derived from phosphoric acid) And Μη is in the range of 1200 to 5000 g/mole, η=1 and m=l, and Tg is 43 °C. 8) In one embodiment of the anti-bridging agent, the Y-based system is from neopentyl glycol and c Made of bis 20 alcohol and isophthalic acid, X base is -0-P02H2 (derived from phosphoric acid) and Μ η is in the range of 1200 to 5000 g / mol, η = 1 and m = i. An example of an anti-bridging agent, the Y-based system is made of neopentyl glycol and hexanediol and isophthalic acid, and the X-based system is 〇-P02H2 (derived from phosphoric acid) and the Μη system is 1200 to 5000 g/mo. The range of the ear is 'n=1 and m=l. 32 200914557 10) In one embodiment of the anti-bridging agent, the Y-based system is made from neopentyl glycol and ethylene glycol and terephthalic acid, and the X-based system is 0-Ρ02Η2 (derived from phosphoric acid), and Μη is in the range of 1200 to 5000 g/mol, n=. 11) In one embodiment of the anti-bridging agent, the γ-based system is derived from neopentyl glycol and propylene glycol Made of terephthalic acid, X-based -0-P02H2 (derived from phosphoric acid), and Μη is in the range of 1200 to 5000 g/mol, n=1 and claw=1. 12) One of the anti-bridge agents In the examples, γ is made from neopentyl glycol and terephthalic acid as an ester of 'X-based sulfamic acid, and Μη is in the range of 1200-4000, η=1 and m=l. 10 13) Anti-bridging One embodiment of the agent, the γ-based system is made from neopentyl glycol and terephthalic acid, the X-based boronic acid ester, and the Μη system is in the range of 1200-4000, η=1 and m=l and the Tg system is 66°. C. 14) In one embodiment of the anti-bridging agent, the γ-based system is derived from neopentyl glycol and Made of diterpene acid, an ester of X-based sulfonic acid, and Μ 系 is in the range of 1200 to 5000 g/mol 15 'η= 1 and m=l. 15) One example of anti-bridging agent, Y-based system Made from neopentyl glycol and terephthalic acid, X-based ester of HET acid, and Μη is in the range of 1200 to 5000 g/mol, η=1 and m=l and Tg is 54 0C. 16) In one embodiment of the anti-bridging agent, the Y-based system is made from neopentyl glycol and isophthalene 20 dicarboxylic acid, the X-based ester of HET acid, and the Μη system is in the range of 1200 to 5000 g/mole, η = 1 and m = l. 17) In one embodiment of the anti-bridging agent, Y is made from neopentyl glycol and terephthalic acid, X-based ester of decane sulfonic acid, and Μη is in the range of 1200 to 5000 g/mole' 1 And m = l and Tg is 41 °C. 33 200914557 18) In one embodiment of the anti-bridging agent, γ is made from neopentyl glycol and tridecyl alcohol propane and iso-p-dicarboxylic acid, X-based system is 0_Ρ02Η2 (derived from phosphoric acid), and Μη is 1200 to Range of 5000 g/mole, η = 1 and 111=1. 19) In one of the anti-bridging agents, the γ-based system is made from neopentyl glycol and trimethyl-5-propane propane and terephthalic acid, and the X-based system is _〇_ρ〇2Η2 (derived from phosphoric acid) and Μη A range of 1200 to 5000 g/mole, 1 and m=l. 20) In one embodiment of the anti-bridging agent, the γ-based system is made from neopentyl glycol and diethylene glycol and isophthalic acid, the X-based system is _〇_p〇2H2 (derived from phosphoric acid) and the Μη system is 1200 to Range of 5000 g/mole, η = 1 and m = l. 10 21) In one embodiment of the anti-bridging agent, the γ-based system is made of glycerol, neopentyl glycol and isophthalic acid, and the X-based system is 〇_p_2H2 (derived from phosphoric acid), and Μη is in the range of 1200 to 5000 g/mole, n=1 and m=l. 22) In one embodiment of the anti-bridging agent, the γ-based system is made of neopentyl glycol and propylene glycol, and ethylene glycol and isophthalic acid, and the X-based system is _〇_P〇2H2 (self-phosphorus derivative 15). And Μη is in the range of 1200 to 5000 g/mole, n=1 and m=l.

Uralac® P770 (available from DSM Resins, Zwolle, NL) is mixed with the ingredients listed in Table 1 in a premixer (Kinematica Blender Microtron MB550), homogenized, and then applied to a twin-screw priSm extruder. (Prism TSE Ιό TSE (2 rpm, n〇. 〇 extrusion, and screening (retsch 20 vibro (90 μιη) into a powder with a particle size of less than 90 μηη. This procedure is based on a similar amount of anti-bridging The basic resin of Uralac® Ρ770 is repeated. 34 200914557 Table 1: Powder coating composition Uralac P 770 Basic resin without anti-bridging agent K2160 GT-7004 Resiflow PV-5 Benzoin Parts of several parts Copies A 93 154.2 57 3 tEE—B 93 154.2 57 3 jj__ The powder was electrostatically sprayed onto an aluminum substrate (AL-46). The coated substrate was cured at 200 ° C for 10 minutes. Long wave rough seam Decision 5 Surface morphology of coated sheets using a white light interferometer (Veeco

Scanning of Wyco NT 1100). All experiments were performed on lenses and objectives with individual χ0·5 and x5. This combination measures a 2.4mm x 1.8 mm surface during a single scan. The surface of each coated sheet is measured at five different locations to ensure representative properties of all topography. 10 In order to determine the small and long wave longitude of the measurement surface, the original data is used.

The Veeco software (version ν3·6 of NT1100) was further analyzed. First, the spatial frequency at which the Fourier leaves of the measurement surface are decomposed into their components is determined. In the second step, the small and long wave roughness is extracted by individually removing the unwanted frequencies and reconstructing the image with a high pass and low pass Gaussian filter. A solid value of 20 15 mm for the digital wear frequency is used for all different surface brooms. The root mean square roughness Rq value of the overlying surface (the height deviation obtained from the length/area evaluation and the average of the average line/surface) is used to describe the small or long wave roughness. The turbidity and gloss properties of the cured powder coating were measured on a Byk Gardner turbidity-gloss scale at a layer thickness of 60 μηι. 20 The results are shown in Table 2. 35 200914557 Table 2: Coating properties Rq (long) μπι Rq (short) nm Turbidity Gloss 20. A 0.53 29.6 106 85.6 B 1.92 38.2 533 33.9 As seen in Table 2, the coating with anti-bridging agent has a higher 20%. Gloss and low turbidity.

Uralac® P770 (available from DSM Resins, Zwolle, NL) is mixed with the ingredients listed in Tables 5 and 5 in a premixer (Kinematica Blender Microtron MB550), homogenized, and extruded in twin-screw Prism Plasticizer (Prism TSE 16 TSE (200 rpm, 120 0C) extrusion and screening (retsch vibro (90 μηι) into a powder with a particle size of less than 90 μηη. This procedure uses a similar amount of Uralac® without anti-bridging agent Ρ770 basic resin repeat. 10 Table 3: Powder coating composition

Uralac P770 Base resin without anti-bridge agent GT 7004 K2310 K2310 Durcal2 Durcal 2 Resiflo wPV-5 Benzoin Parts parts parts w/w% Parts w/w% Parts parts I 138 59 99 33 0 0 3 1.5 IR 138 59 99 33 0 0 3 1.5 Π 116 50 99 33 31 10 3 1.2 Dish 116 50 99 33 31 10 3 1.2

Araldite ® GT 7004 is an epoxy crosslinker available from Huntsman.

Kronos ® 2310 (K2310) is available from K02 of Kronos. Durcal ® 2 is available from CaC03 from 〇mya. 15 Resiflow PV-5 is available as a flow additive from Worlee ® Chemie Gmbh.

Benzoin is a deaerator available from Caffaro SpA Italy. The powder coating compositions I, IR, II and IIR were electrostatically sprayed onto a steel substrate 36 200914557 (S-46). The coated substrate was cured at 200 ° C for 10 minutes. The coating has a thickness of 60 μηι. The turbidity and gloss properties of the cured powder coating were measured on a Byk Gardner turbidity-gloss scale at a layer thickness of 60 μm. The flow system was determined visually compared to the PCI-5 plate and graded at a higher value of 1-10, with 10 to best. The results are shown in Table 4. 4th sheet 沴 layered 皙 flow turbidity gloss 20° gloss 60° I 7 31 92.2 97.8 IR 6 40.8 90.9 97.6 II 6.75 287 60.5 88.4 IIR 3 305 57.5 87.6 As seen in the fourth table above, with no anti-bridge agent Compared to the coating (IR, IIR), the coating with anti-bridging agent (1, 11) has a better flow, a lower turbidity of 10 and a better gloss. Table 5: Powder coating composition

Uralac P 770 Base resin without anti-bridge agent GT 7004 K2310 K2310 Blanc Fix Micro Blanc Fix Micro Resiflow PV-5 Benzoin Parts of the number of parts w/w % w/w % Parts of the copies 173 74 149 33 47 10 4.4 1.9 ππι 173 74 149 33 47 10 4.4 1.9 IV 142 61 152 33 91 20 4.4 1.5 IVR 142 61 152 33 91 20 4.4 1.5

Blanc Fix ® Micro is available from BaS04 from Sachtleben. Powder coating compositions III, IIIR, IV and IVR were electrostatically sprayed onto a steel substrate (S-46). The coated substrate was cured at 200 ° C for 10 minutes. The coating has a thickness of 40 μηι. The turbidity and gloss properties of the cured powder coating composition were measured on a Byk Gardner turbidity-gloss scale at a layer thickness of 40 μm. The results are shown in Table 6 37 200914557. The flow system is determined by visual comparison with the PCI-plate and is graded by a 1-10 ratio and 10 is optimal. No. 6 Coating Properties Flow Turbidity Gloss 20° Gloss 60. III 8 34.7 93.1 98.4 IIIR 4 67.3 86.2 96.5 IV 7 49.7 89.2 97.2 IVR 1 67.3 86.2 96.5 5 As seen in Table 6, above, with anti-bridging agent compared to coatings without anti-bridging agent (IIIR, IVR) The coating (III, IV) has a preferred flow, a lower haze value and a better gloss. The ingredients listed in Table 7 were mixed in a premixer (Kinematica Blender Microtron MB550), homogenized, and extruded in a twin-screw Prism extruder (PrismTSE 16 TSE (200 rpm, 120 〇C), and screened ( Retsch vibro (90 μηι) into a powder coating composition having a particle size of less than 90 μm. This procedure is carried out with a portion of the addition of Uralac® P865 based on the anti-bridging agent of Experiment 1 described in the above experimental paragraph, and A similar amount of 15 is used as a comparative example of Uralac® P865 without anti-bridging agent. Table 7 Powder Coating Group ^ K2160 K2160

Resiflow PV-5

Benzoin Uralac P 865 XL-552 with anti-bridging agent Uralac P865

Copies 210 w/w % Copies 5.1 1,4 - --- Z1U___ J. I_ 1.4 _ Uralac P865 is a carboxyl group coated with primid8XL 552 and has the following properties (4): acid value 33_37, viscosity 15_3〇38 200914557 dPa.s, Tg is about 56 °C. Uralac ® P865 is available from DSM N_V.

Primid ® XL-552 is a yS hydroxyalkylguanamine crosslinker available from EMS-chemie A.G., Switzerland.

Kronos ® 2160 (K 2160) is a 5 Ti02 colorant available from Kronos Europe.

Resiflow PV-5 is a flow additive available from Worlee Chemie Gmbh.

Benzoin is a deaerator available from Caffaro SpA Italy. The powder coating compositions V and VR were electrostatically sprayed onto the aluminum substrate 10 (AL-46). The coated substrate was cured at 180 ° C for 10 minutes. The coating has a thickness of 60 μηη. The turbidity and gloss properties of the cured powder coating were measured on a Byk Gardner turbidity-gloss scale layer thickness of 60 μΓ. The results are shown in Table 8. The flow system is determined by visual comparison with the PCI_plate and is graded at a higher value between turns, and 10 is optimal. 15 箆8 interlayer properties V flow turbidity gloss 20° gloss 60° 6 29 87 94 VR 5 80 82 94 As seen in Table 8, 'coating with anti-bridging agent (V) shows coating compared to no anti-bridge agent Layer (VR) better flow, lower turbidity, and better 2 〇. luster. The QUV-Β exposure test was carried out according to ASTM 53-88 for coatings obtained from Compositions V and 20 VR. To 60 gloss 50 ° /. The time spent in the retention period is longer for the coating v than for the VR. The ingredients listed in Tables 9 and 10 are in the premixer (Kinematica 39 200914557

Blender Microtron MB550) is internally mixed, homogenized, and extruded in a twin-screw Prism extruder (Prism TSE 16 TSE (200 rpm, 120 °C), and screened (retsch vibro (90 μηι) into a particle size of less than 90 μηη) Powder coating composition. This procedure was carried out by adding a 4% portion to the anti-bridging agent [ΕΧ] of Experiment 1 as described in the above experimental paragraph, and the anti-bridging was carried out in a similar amount as a comparative example. Uralac® P865 [C-EX] repeat of the agent. Table 9 Powder coating composition 氺EX C-EX XL-552 K2160 K2160 Resiflow PV-5 Benzoin Parts of the number of parts w/w % Parts of the number VI 380 20 133 25 5.3 1.5 C-VI 380 20 133 25 5.3 1.5 νπ 333 17.5 175 33 5.3 1.5 c-νπ 380 20 200 33 6 1.7 V 285 15 210 40 5.1 1.4 cv 285 15 210 40 5.1 1.4 vm 285 15 250 45 5.5 1.5 c-vm 285 15 250 45 5.5 1.5 IX 238 12.5 250 50 5 1.4 C-EX 285 15 300 50 6 1.7 X 238 12.5 313 55 5.6 1.6 cx 285 15 375 55 6.75 1.9 *) ratio of cv to v , C-VI is compared with VI. 10 Uralac ® P865 is suitable for cross-linking with /3 hydroxyalkyl guanamine (For example, Primid® XL-552) a carboxylated polyester available from Uralac ® P825 (also known as carboxylated polyester powder coating resin) with the following characteristics: acid value 33-37, viscosity 15-30 dPa.s' Tg is about 56 ° C. Uralac ® P865 is obtained from DSM NV. 15 Primid ® XL-552 is an A-hydroxyalkylguanamine crosslinker available from EMS-chemie AG, Switzerland.

Kronos ® 2160 (K 2160) is available from Kronos Europe 40 200914557

Ti02 colorant.

Resiflow PV-5 is a flow additive available from Worlee Chemie Gmbh.

Benzoin is a deaerator available from Caffaro SpA Italy. 5 The amount of anti-bridging agent (w/w %) is based on the amount of polymer.

The amount of Ti02 (w/w%) is based on the total composition. The powder coating composition was electrostatically sprayed onto an aluminum substrate (AL-46). The coated substrate was cured at 180 ° C for 10 minutes. The coating has a thickness of 60 μηη. 1〇 The flow system is determined by visual comparison with the PCI-plate, and is graded at a higher value of 1-10, and 10~ is optimal. The results are shown in Tables 11 and 12. The turbidity and gloss properties of the cured powder coating were measured on a Byk Gardner turbidity-gloss scale at a layer thickness of 60 μηι. The results are shown in Tables 11 and 12. 15 Outdoor resistance is determined by the QU V- Β exposure test of the obtained coating. The coating is exposed to the exposure cycle (alternative 4 hours to 50 ° C UV-B, 4 hours to 40 Condensation at °C). The time series taken until the 60° gloss retention is 50% is shown in Tables 11 and 12. colour

20 The color values referred to in this application are based on the values measured on the surface of the coating using CIE 1976 L, a*, b* color values (C.I.E.: International Commission on Illumination). The color values are measured according to DIN 6174 using the Dr. Lange Micro Color II device. Thermal Stability Test 41 200914557 A substrate comprising one of the coatings obtained as described above is cut into two parts. The first part is reserved for reference. The second part was subjected to a thermal stability test in which the cured plate was heated in an electric furnace at 220 ° C for 60 minutes. 5 The color of the coating on the first and second parts is measured as described above. The results are shown in Tables 11 and 12 below. Color change: δ b* = b* cure + thermal test - b * cure color change: 10 5 E = (L@Ht + thermal test - L cure) 2+ (a * solid as heat test - a * cure) 2 + (b* sHt+thermal test-b* cure) 2 As seen in Table 11 below, compared to coatings without anti-bridging agents (C-VI, c-vii, cv-iii, c-ix, cx) The anti-bridging coatings (vi, VII, VIII, IX, X) have better flow, flow turbidity values, and comparable gloss. The time taken for the 50% retention of 15 to 60 ° gloss is longer for the test coating according to the invention than for the comparative coating. This indication adds to the outdoor nature. As seen in Table 12 below, coatings with anti-bridging agents (XI, XII, XIII, XIV) have a coating (C-XI, C-XII, C-XIII, C-XIV) with no anti-bridging agent. Preferably, the flow, the lower turbidity value, the preferred or similar light 20 ze. As can be seen from the results of the thermal stability tests listed in Tables 11 and 12, the 5 b* of the coating according to the present invention is less than 5 b* of the comparative coating subjected to the same test. Therefore, yellowing is lowered and thermal stability is improved. 42 200914557 The ίο table powder is too slanted composition 氺EX C-EX XL-552 K2160 Blanc FixF K2160 Blanc FixF Resiflow PV-5 Benzoin Parts of the number of copies of the number of copies w/w% w/w % Copies XI 855 45 495 72 33 5 14.7 3.9 C-XI 855 45 495 72 33 5 14.7 3.9 XII 832 44 525 158 33 10 15.8 4.2 C-XII 832 44 525 158 33 10 15.8 4.2 ΧΙΠ 713 38 510 225 33 15 15 4.2 C-XIII 713 38 510 225 33 15 15 4.2 XIV 570 30 525 324 33 20 14.4 3.9 C-XIV 570 30 525 324 33 20 14.4 3.9 *) Comparison of C-ΧΙ and XI, etc.

The amount of Ti02 (K2160) (w/w %) is based on the total composition.

Blanc Fix® F is a BaS〇4 available from Sachtleben. 5 The amount of BaS04 (Blanc Fix) (w/w %) is based on the total composition. Table 11 Coating Properties £

N) Comparison of c-ν system and V, comparison of C-VI system with vi 'waiting for ί·ί. Fees for 50% of the time (small f) # to 60 gloss "H before and after b*的差##在22°(:日^^^1 hour before and after 5£差###在22Ϊ睹之1 J卞心(1) 43 200914557 The 12th table coating properties flow 60 minutes turbidity Gloss 20° Gloss 60° Thermal Stability ## db* (au) Thermal Stability ###dE(au) XI 7- 37 88 95 3.8 4 C-XI 5.5 56 87 96 8.3 9.2 XII 6.5 41 87 95 3.7 3.9 C-XII 4.5 81 84 95 7.5 7.9 XIII 6 46 85 93 4.3 4.4 C-XIII 2.5 158 76 8.2 8.8 XIV 6- 45 83 92 6 6.3 C-XIV 1 459 45 89 8.4 8.9 In the following examples, it is different The properties of the coating of the powder coating composition against the bridging agent were compared. The results are presented in Table 13 below. To this end, a "base coating composition" was used, which contained 92 parts of Uralac P5170, 39 parts. GT7004 crosslinker, 165 parts Kronos ® 2310 (55 wt%), 2.96 parts Resiflow PV-5 ' and 0.98 parts Benzoin. Uralac ® P5170 is suitable for epoxy resin crosslinkers (such as Araldite® GT) 7004) A commercially available carboxylated polyester (also known as a carboxylated polyester powder coating resin). Uralac® P5170 has the following characteristics: acid value 32-38 mg KOH / 10 g 'viscosity 丨 8-35 Pa.s, The Tg is about 54 ° C. Uralac P 5263 has the following characteristics: acid value 48-58 mg KOH / gram, viscosity i 〇 4 〇 pa.s, Tg about 58 ° C. "Basic coating composition" is taken as Example XV (Blanc + 5% by weight of the anti-bridging agent of Example 12 as described above), Example xVI (Bianc + 5% by weight of the anti-bridging agent of Example 1 as described above), Example 15 XVII (Blanc + 5% by weight of the anti-bridging agent of Example 13 as described above, and Comparative Example (Blanc) of Example XVIII (Blanc + 5% by weight of the anti-bridging agent of Example 7 above). 44 200914557 Coating properties Anti-bridge agent flow turbidity gloss 20° gloss 60. Blanc - (none) 1 397 48.9 85.4 XV Example 12 4 76.3 74.7 88.3 XVI Example 1 5 48.4 76.9 88.5 XVII Example 13 3 253 64.2 89.3 XVIII Example 7 5 192 84.4 96.9 Blanc comparison: no anti-bridge agent. As can be seen from the 13th table above, the coating with anti-bridging agent (XV, XVI, XVII, XVIII) shows a better flow than the coating without the anti-bridging agent (Blanc), and the lower turbidity value , and a higher gloss A. The preparation of the colorant particles coated with the anti-bridge agent (in this case, Ti02 (K2160)) was dispersed in an excess of tetrahydrofuran (THF). The dispersion was continuously fed by a magnetic stirrer. After 30 minutes, 5% by weight based on the coloring matter was added to the dispersion in accordance with the anti-bridging agent of Example 1 of the experimental paragraph 1 described above. Then, the mixture was stirred for 24 hours, after which the THF was evaporated at room temperature. For Example E-1, the granules were incorporated into commercially available polyester P5070 in a 50/50 ratio using a semi-long extruder. For Example E-2, the particles were heat treated in a nitrogen atmosphere at 150 ° C for 16 hours in the same ratio of Sil in the same t S 。. Comparative Example CE consists of unmodified Ti02 particles (K216®) compounded in the same proportion of 5〇/50 in the same polyester (P5070). To evaluate the effect of coating the colorant particles with the anti-bridging agent on the flow of the powder coating, the viscosity stability is as shown above (10) to fine. The temperature of c is measured after increasing the temperature. The results are summarized in Table M below. 45 20 200914557 Table: After 150s (ETA 150s) and 600s 徭 (ETA 600s), the viscosity of the polyester and the color of the polyester containing the anti-bridging agent (E-l and E-2) 摅

Etal50s [Pa.s] Eta600s fPa.s] Eta600s/Etal50s [-] Comparative Example (CE) 248 467 1.8 Example El 102 147 1.44 Example E-2 80 91 1.13 As observed in Table 14, it contains no The viscosity of the powder 5 of the modified toner particles is strongly increased over time and is always significantly higher than the powder coating containing the pigment particles coated with the anti-bridging agent. The heat treatment of the modified colorant resulted in the lowest and most stable viscosity of all three compounds (Example E-2). The viscosity of the powder coating compositions A and B as described in Table 1 was measured by applying a 10% controlled rheometer (MCR300, Paar-Physica) by applying a fixed shear stress of ipa for 1 hour. At time 0, the temperature was increased by 200 °C from 100 at a rate of 350 C/min. All measurements were made under a nitrogen atmosphere using parallel plate geometry (diameter and gaps of 25 mm and 1.5 mm) for shearing. 15 The powder coating composition has a viscosity that is minimal when it is close to the highest temperature (200 ° C in this case). The small viscosity values measured for the samples listed in Table 1, 7? *, 丨, are reported in Table 15. Table 15 77 Minimum [Pa.s] A 142 B 524 The ingredients listed in Table 16 are in the premixer (Kinematica Blender 46 200914557

Microtron MB550) was mixed, homogenized, and coated in a twin-screw Prism extruder (Prism TSE 16 TSE (200 rpm, 120. 〇 extrusion, and screening (retsch vibro (90 μηι) into a powder having a particle size of less than 90 μm) Coating composition. 5 This procedure is carried out with a part of the indicated resin (XIX to XXIV) with an indication of w/w % added in accordance with the anti-bridging agent of Example 1 as described in the experimental paragraph above ( AB), and repeated in the same amount of the same resin containing no anti-bridging agent, as a comparative example (C-XIX to C-XXIV). 47 200914557

48 200914557

Uralac ® P865 is a commercially available carboxylated polyester (also known as carboxylated polyester powder coating) suitable for use with cold hydroxyalkylguanamine crosslinkers such as Primid® XL-552 and having the following characteristics: Resin): acid value 33-37 mg KOH / gram, viscosity 15-30 Pa.s, Tg about 56 0C. 5 Uralac ® P5070, P5263 is a commercially available carboxylated polyester (also known as carboxylated polyester powder coating resin) suitable for use with epoxy crosslinkers such as Araldite® GT 7004. Uralac® P5070 has the following properties: Acid value 32-38 mg KOH/g, viscosity 18-35 Pa.s, Tg approx. 54 °C. Uralac P 5263 has the following characteristics: acid value 48-58 mg KOH/g, viscosity 10-40 10 Pa.s, Tg about 58 〇C.

Uralac® P865, Uralac® P5070 and Uralac® P5263 are available from DSM N.V.

Primid ® XL-552 is a 5-hydroxyalkylguanamine crosslinker available from EMS-chemie A.G., Switzerland. 15 Araldite® GT 7004 is an epoxy resin available from Huntsman.

Kronos ® 2160 (K 2160) is a Ti02 pigment available from Kronos Europe.

Kronos ® 2310 (K 2310) is a Ti02 pigment available from Kronos Europe. 20 Resiflow PV-5 is a flow additive available from Worlee Chemie Gmbh.

Benzoin is a deaerator available from Caffaro SpA Italy. The amount of anti-bridging agent (w/w%) is based on the amount of polymer.

The amount of Ti02 (w/w%) is based on the total composition. 49 200914557 Physical powder East stability test The physical powder stability of the powder coating composition XIX was tested to see if the powder would sinter (coagulate) at certain temperatures and for a period of time. The test results are listed in Table 17 '4 30 ml bottles filled with about 15 ml of powder coating 'closed' and placed in a Heraeus Instruments, B 6030 type stabilizer, which is continuously indicated at the indicated temperature. time. The bottle was removed from the furnace' and cooled to room temperature for a minimum of 1 hour. Thereafter, the condition of the powder and the stability of the powder are determined visually and are graded as indicated below. Grading: 1 to 10, and 1 series is very poor (very dense, one solid block), and 10 is excellent (completely free floating powder). Preferably, the powder coating composition has a stability of at least 6 after 2 weeks at 40 °C. 1_17th 袅 powder coating composition XIX powder stability powder coating furnace temperature 1 day 3 days 1 week 2 Monday XIX 30 °C 9 9 9 9 40 °C 8 8 8 8 c-χιχ 30 ° C 9 9 9 9 40 °C 8 8 8 6 Similar to the above examples, the powder stability of the powder coating compositions of Examples C, C-XXIII, XXIV, C-XXIV was also 3 weeks after 40 °C. measuring. The results are presented in Table 18 below. JL18 table powder East coating powder East stability properties XXIII, C-XXIII, XXIV, C-XXIV Example 3 ° after 40 °C JOCIII 3 SzXXUI 7 jgciv 5 [cooav 9 50 200914557 [Simple diagram 3 ( None) [Main component symbol description] (none) 51

Claims (1)

200914557 X. Patent application scope: The anti-bridging #1 'has a general formula H, the towel, the lanthanide and the pigment particles and/or the filler particles have an affinity base, wherein the γ system has an affinity base with the polymer, and Wherein, continued, an integer from 1 to 3, and m is an integer from 1 to 4, characterized in that the anti-bridging agent has a glass transition temperature of at least 3 Å. Hey. 2. An anti-bridging agent according to claim 1 of the patent scope, characterized in that the molar weight Μη is at least 1 gram per mole. 3. Shi: Anti-bridging agent of the first or second patent scope of the patent application, wherein X is selected from the group consisting of Sx (_〇_p〇2H2), phosphonic acid 'sulfuric acid, sulfonic acid, sulfamic acid (-〇-so2NH2) a group consisting of boric acid (_〇_b(oh)2), pyridine ethanol, HET acid, maleic acid, and the like. 4. The anti-bridging agent according to any one of claims 1 to 3, wherein the γ system is at least selected from the group consisting of neopentyl glycol, ethylene glycol, diethylene glycol, propylene glycol, and dimethyl alcohol And a polyhydric alcohol monomer of the group consisting of glycerol and a polycarboxylate selected from the group consisting of p-dicarboxylic acid 'isophthalic acid, phthalic acid, hexamethylene succinic acid, and trimellitic anhydride The purpose of the manufacture of acid monomers. 5. A powder (4) filament read composition comprising - at least one resin, and - at least one anti-bridging agent according to any one of claims 1 to 4. 6. The resin composition of claim 5, wherein the resin is a polyester resin. 7. The resin composition according to claim 5 or 6, wherein the resin of the 52 200914557 resin and the anti-bridging agent is composed of at least 5 Qw/body. The phase is as early as 8. As in the resin composition of the seventh aspect of the patent composition, the white cake rb, -舻., the early system is selected from the new pentaerythritol, ethylene glycol, diethylene glycol, propylene glycol 13⁄4 = 'S+ ^ η ~ methyl alcohol propane, > bismuth dicarboxylic acid, ρ_ alcohol, succinic acid, and trimellitic anhydride. A powder coating composition comprising - in the scope of claims 5 to 8 of the scope of the patent application; Ρ〇〇. 、, the tree known composition, preferably in an amount of 50 to 99 parts by weight, τ 10 15 20 - and a crosslinking agent, preferably 1 to 5 parts by weight, and 1 part by weight, and preferably, in J1, the sum of the amounts of the resin composition and the crosslinking agent is (10) parts by weight ,. 10. If you apply for powder coating in item 9 of the scope of patent application. The complex, and the composition, characterized in that the crosslinking agent comprises a β-hydroxyalkylguanamine unit. 11. A powder coating composition comprising - a powder coating composition as claimed in claim 9 or 10, and - at least 5 W/W % of a colorant or a colorant and a filler present, twilight The sum of the feedstock and the filler is based on at least 5 w/v. 〇' is a total composition 12_ such as the powder of the first aspect of the patent application, the composition comprising at least 40 w/w% of the color of the product, characterized by The sum of the mixed sweets is at least 4 GW/W%, based on the total composition. 13. A method of making a coated substrate, comprising the steps of: providing a substrate, 53 200914557 - applying the composition of any one of claims 9 to 12 to the substrate Obtaining at least a portion of the covered substrate - curing the composition on the at least partially covered substrate. A fully or partially coated substrate comprising a coating based on the composition of any one of claims 9 to 12 which is fully or partially cured. 15. The coated substrate of claim 14, wherein the coating has an average thickness of 50 μηι or less and a cover thickness of 50 μηι or less. 10. The coated substrate of claim 14 or 15, wherein the coating has a long wave roughness of 0.8 μηη or less. 17. A cross-linking agent composition comprising - at least one cross-linking agent, and - at least one anti-bridging agent according to any one of claims 1 to 4. 15. 18. A coated colorant particle coated with an anti-bridging agent according to any one of claims 1 to 4. A coated filler particle coated with an anti-bridging agent according to any one of claims 1 to 4. 20. An anti-bridging agent according to any one of claims 1 to 4, which is used as an anti-yellowing agent in a powder coating composition comprising the following: - a β-hydroxyl group a crosslinking agent for the alkylguanamine unit, and a polymer comprising a functional group reactive with the β-hydroxyalkylguanamine unit. 21. Use of a resin composition according to any one of claims 5 to 8 in the patent application No. 2009-14557, which is used for a powder coating composition. 55 200914557 VII. Designated representative 囷·· (1) The representative representative of the case is: (). (None) (2) A brief description of the symbol of the representative figure: (none) 8. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: