Abstract: Polyesterdiols having low viscosities of less than 3500 cps, high content of non-volatile matter in excess of 96 wt %, and narrow molecular weight distribution of less than about 1.4 are prepared by esterification of one or more aliphatic dicarboxylic acids or ester derivatives thereof using at least a 1.5 molar excess of one or more aliphatic diols until an acid number of less than 20 is achieved, and stripping excess diol from the polyesterdiol reaction product. Where esterification catalyst is used, catalyst is substantially removed prior to stripping excess unreacted diol from polyesterdiol reaction product. The polyesterdiols so produced are useful as (i) curable components in thermosettable resin compositions, particularly compositions essentially free of volatile organic solvent and also containing a crosslinking agent and a reactive hardening agent: and/or (ii) useful as coatings, paints and adhesives, providing coatings with very low content of volatile organic compounds.

Abstract: The thermosetting composition of the present invention includes an unsaturated polyester, an addition polymerizable monomer, a low shrink agent other than an aliphatic polyester, and an aliphatic polyester decomposed in a decomposing solution containing from about 0.1 to about 50% by weight of at least one base selected from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal oxides, alkaline earth metal oxides, alkali metal alkoxides and alkaline earth metal alkoxides, and at least one solvent selected from the group consisting of water, methanol, ethanol, and ethylene glycol at a temperature lower than a boiling point of the decomposing solution after being cured.

Abstract: A flexible, aminoplast-curable film-forming composition and a process for preparing multi-layered coated articles coated with a pigmented or colored base coat and a transparent or clear topcoat are disclosed. A pigmented or colored base coat is first applied to a substrate followed by the application of a transparent topcoat to the base coat. The transparent topcoat composition is a flexible, curable film-forming composition comprising (i) a polyether polymer containing a plurality of terminal or pendant carbamate groups of the structure: ##STR1## (ii) a polymer selected from the group consisting of a polyester polymer, a polyurethane polymer, an acrylic polymer, and mixtures thereof wherein each polymer contains a plurality of terminal or pendant carbamate groups of the structure depicted above; and (iii) an aminoplast crosslinking agent. In a particularly preferred embodiment, the film-forming composition contains a polyester polymer derived from a cycloaliphatic acid or anhydride.

Abstract: The invention relates to a process for preparing a composition contains a polymer and a crosslinking agent which comprises mixing a polymer that is solid at room temperature with a crosslinking agent, the polymer and the crosslinker having complementary reactive groups, at a temperature at which the viscosity of the polymer (measured according to Emila) is less than 5000 dpas, in a means for achieving a homogeneous composition in such a short time that less than 20% of the reactive groups of one of either the polymer or crosslinking agent has reacted, and subsequently cooling and comminuting the composition.The mixing is preferably effected in a static mixer at a temperature higher than 140.degree. C.

Abstract: A method for reducing the molecular weight of aminoplast compounds, the aminoplast compounds obtained thereby, and coating compositions containing said aminoplast compounds are provided. The reduced molecular weight aminoplasts are obtained by reacting(a) an aminoplast compound, having a total number (y) of reactive substituents on the amino nitrogens of the aminoplast, where y=(E.times.M) and E=equivalents per mole of aminoplast and M=total number of moles of aminoplast, wherein the reactive substituents are selected from the group consisting of --NH, alkylol, alkoxy, alkoxyalkyl, and mixtures thereof and(b) at least one carbamate compound selected from the group consisting of unsubstituted and substituted primary carbamate compounds, unsubstituted and substituted secondary carbamate compounds and mixtures thereof,in the presence of primary or secondary alcohols, at temperatures under 150.degree. C.

Abstract: A novel polyester is provided comprising the reaction product of: (1) an acid functional polyester which is prepared from: (a) a material of the structure: ##STR1## wherein X is a lower alkyl group having from about 1 to about 4 carbon atoms, and R and R' are independently lower alkylene groups having from about 1 to about 4 carbon atoms; (b) a polyol different from (a); and (c) a polyacid; and (2) a monoepoxide containing from about 3 to 20 carbon atoms. The reaction product is carbamoylated. The carbamoylated polyester can be present in a film-forming composition also having a carbamate functional acrylic polymer; and an aminoplast crosslinking agent. Also such a film-forming composition can be a clear coat in a multi-component composite coating composition.

Abstract: Curable coating compositions are described comprising(a) a polymer resin comprising active hydrogen-containing functional groups other than carbamate,(b) a curing agent having groups that are reactive with said functional groups on (a), and(c) a compound having a molecular weight of from 75 to 2000 comprising at least one group of the formula: ##STR1## wherein X is O or NH and either (a), (b), or both (a) and (b) comprise groups that are reactive with said group on (c).

Abstract: The invention relates to the use of a hydroxyl functional polyester having a glass transition temperature of at least 40.degree. C., a hydroxylnumber between 5 and 150 mg KOH/gram resin, a molecular weight (Mn) between 800 and 10.000 and a molecular weight (Mw) between 8000 and 100.000 in the preparation of coatings for the interior of can ends. The polyester has to be crosslinked with for example an amino resin or an epoxy resins.

Abstract: A coated panel formed from a self-supporting cellulosic substrate and a top coating containing a thermoset resin having about 0.1-1.5 wt % free formaldehyde admixed with said resin; and (b) a thermoplastic polymer thoroughly admixed with said resin, wherein said thermoplastic polymer exhibits amine groups capable of reacting with at least some of the free formaldehyde under resin curing conditions. The coated panel can be embossed with decorative patterns such as wood grain without fracture of the coated surface or significant buildup on the press or embossing die surfaces.

Abstract: Polymeric vehicles with liquid crystalline-like properties, solvent dispersible polymeric vehicles, formulated coating compositions with liquid crystalline-like properties and a method for imparting liquid crystalline properties to a coating binder are described. The materials with liquid crystalline-like properties lack structural segments previously regarded as mesogenic.

Abstract: A thermosetting, organic solvent-based, primer coating composition for protecting metal surfaces which includes a solvent solution of: (a) a hydroxy-functional polyester resin; (b) a thermosetting acrylic resin; (c) a hydroxy-terminal polybutadiene resin, a hydroxy-terminal epoxidized polybutadiene resin, or mixtures thereof; (d) a blocked isocyanate crosslinker including at least one dimethyl pyrazole blocked isocyanate; (e) an aminoplast crosslinker including at least one melamine-formaldehyde condensate; (f) a catalyst; and, (g) a pigment. The primer exhibits excellent flexibility after curing to allow the primer to be coil coated onto metals as a thicker film and to have the metal subsequently formed without film fracture or loss of adhesion.

Abstract: The invention relates to an aqueous polyester- and acrylate-based polymer dispersion, obtainable by free radical-initiated polymerization of at least(a) one (meth)acrylic acid ester,(b) one ethylenically unsaturated, at least monofunctional acid, and optionally(c) one ethylenically unsaturated monomer other than (a) and (b),or mixtures thereof with a polyester resin capable of undergoing a free radical-initiated polymerization. The invention further relates to the production of these aqueous polymer dispersions, to aqueous clear coat compositions containing said dispersions, and to the use thereof.

Abstract: An adherent film-forming composition comprising a carbamate-functional polyester polymer or oligomer, a hydroxy functional polymer derived from ethylenically unsaturated monomers and an aminoplast crosslinking agent is disclosed. The coating composition can be used to produce clear coats in composite color plus clear coatings exhibiting good levels of acid etch resistance as well as high intercoat adhesion. Also disclosed are a method of applying a composite color plus clear coating to a substrate and the coated article prepared by such a method.

Abstract: An aqueous resin composition for outer surface coating of can, which comprises 30-70 parts by weight of a crosslinking agent (A) and 70-30 parts by weight of a film-forming resin (B). This resin composition has been developed so as to have excellent resistance to pasteurization, an excellent hardness and excellent processability and to give reduced fuming.In the resin composition, A is a co-condensation product between an alkyl-etherified amino resin and a hydroxycarboxylic acid and contains a mononuclear component in an amount of 40% or less; B is an acrylic resin or a polyester resin; and both A and B must be soluble or dispersible in an aqueous medium.

Abstract: A waterborne paint is provided by dissolving or dispersing a polyester resin and a crosslinker in an aqueous medium containing a base. The polyester resin contains a hydroxy-terminated polyalkadienediol having an average degree of polymerization from 5 to 50, a hydrogenated product thereof or a mixture thereof in a proportion from 1 to 30% by weight of the entire polyester-forming reactants, and has an acid number from 5 to 150, a hydroxyl number from 30 to 250. The paint is useful for forming a multilayer coating film on automobile bodies by applying the paint between an electrodeposition coating layer and a top coating layer.

Abstract: An acid cured coating composition containing a hydroxyfunctional acrylic or polyester resin and a 1,3,5-triazine-2,4,6-tris-carbamate. Also provided is an acid cured coating composition containing a hydroxyfunctional acrylic or polyester resin, a crosslinking agent such as a melamine-formaldehyde or a related aminoresin, and a co-crosslinking agent derived from a triazine tris-carbamate such as 2,4,6-tris-(butoxycarbonylamino)-1,3,5-triazine. Also provided is an improved method of coating using the above coating compositions. The coating compositions described in this invention have lower cure temperatures, lower formaldehyde emissions during cure, and produce films and objects which have superior environmental etch resistance than the conventional melamine-formaldehyde coatings which do not have a triazine tris-carbamate co-crosslinker.

Abstract: This invention relates to a polymeric vehicle which reduces or eliminates VOCs in coating compositions by providing a formulated coating composition which does not require an organic solvent for application to a substrate. The polymeric vehicle of the invention comprises at least one linear oligoester diol effective for crosslinking with a crosslinker, and having a number average molecular weight within controlled limits of a polydispersity index effective for controlling the viscosity of the polymeric vehicle.

Abstract: An acid cured coating composition containing a hydroxyfunctional acrylic or polyester resin and a 1,3,5-triazine-2,4,6-tris-carbamate. Also provided is an acid cured coating composition containing a hydroxyfunctional acrylic or polyester resin, a crosslinking agent such as a melamine-formaldehyde or a related aminoresin, and a co-crosslinking agent derived from a triazine tris-carbamate such as 2,4,6-tris-(butoxycarbonylamino)-1,3,5-triazine. Also provided is an improved method of coating using the above coating compositions. The coating compositions described in this invention have lower cure temperatures, lower formaldehyde emissions during cure, and produce films and objects which have superior environmental etch resistance than the conventional melamine-formaldehyde coatings which do not have a triazine tris-carbamate co-crosslinker.

Abstract: A biaxially oriented polyester film having improved surface properties, scratch resistance and abrasion resistance comprises the particulate slip agents of a calcium carbonate having an average particle diameter ranging from 0.01 to 3 .mu.m, alumina having an average particle diameter ranging from 0.005 to 3 .mu.m and a Mohs' hardness of 8 or more and a melamine formaldehyde condensate having an average particle diameter ranging from 0.01 to 3 .mu.m, wherein each of the slip agents is in an amount ranging from 0.01 to 4 wt. % based on the weight of the polyester.The film is useful in manufacturing condensers, medical articles, photographic films, packaging and labelling materials and, particularly, magnetic recording media.

Abstract: N-Methylol derivatives of polycondensation products containing quaternary N atoms obtained fromA) basic ureas of the formulaHN(R.sup.1)--C--N(R.sup.2)--X.sup.1 --N(R.sup.3, R.sup.4) (I),B) polyamines of the formula(R.sup.6, R.sup.7)N--X.sup.2 --N(R.sup.8, R.sup.9) (II)andC) bifunctional alkylating agents,in whichX.sup.1, X.sup.2 and R.sup.1 -R.sup.9 have the meanings given in the description, are new. They are used as agents for improving the wet fastness properties of dyeings on cellulose and cellulose blend fabrics.

Abstract: Polymeric vehicles with liquid crystalline-like properties, solvent dispersible polymeric vehicles, formulated coating compositions with liquid crystalline-like properties and a method for imparting liquid crystalline properties to a coating binder are described. The materials with liquid crystalline-like properties lack structural segments previously regarded as mesogenic.

Abstract: Polymeric vehicles with liquid crystalline-like properties, solvent dispersible polymeric vehicles, formulated coating compositions with liquid crystalline-like properties and a method for imparting liquid crystalline properties to a coating binder are described. The materials with liquid crystalline-like properties lack structural segments previously regarded as mesogenic.

Abstract: The present invention provides for amino-crosslinkable coating formulations based on a mixture of a di or polyhydroxy functional polymeric component selected from the group consisting of diesters, polyesters, alkyd polymers, acrylic polymers and polycarbonate polymers, a methylol (alkoxymethyl) amino crosslinking agent and a bis-aromatic polyhydric phenol component having the structure of formula I: ##STR1## wherein X is selected from the group consisting of carbon to carbon covalent bond, oxygen, sulfur, --S--S--, --CO--, --SO--, --SO.sub.2 -- and a divalent organic radical having a molecular weight less than about 400, and wherein Y is independently selected from the group consisting of hydrogen, halogen, C.sub.1 to C.sub.4 alkyl and C.sub.1 to C.sub.4 alkoxy.

Abstract: The present invention relates to wire coatings which containa) 20 to 50% by weight of a tris-2-hydroxyethyl isocyanurate-modified polyester,b) 2 to 35% by weight of a bismaleimide resin,c) 0.1 to 3% by weight of a catalyst, preferably a titanate catalyst, andd) 35 to 77% by weight of organic solvents, with respect to the total weight of the wire coating, which is 100% by weight. The invention also relates to processes for the preparation of the wire coatings according to the invention.

Abstract: Novel polyesters prepared from a diol, a dicarboxylic acid or ester forming reactive derivative thereof and an aromatic amino acid, ester or alcohol are disclosed.

Abstract: The present invention relates to a thermoset powder coating composition and method of application. The coating includes a copolymer having a reactive functionality selected from the group consisting of epoxy, carboxy, and hydroxy functionalities and mixtures thereof, a suitable crosslinking agent capable of reaction with the reactive functionality on the copolymer, and an aliphatic or aromatic crystalline, hydroxyl containing compound having a melting point of between 30.degree. C. and 150.degree. C. and a flow control agent. The powder coating is a pigmented or clear coat powder composition applied over a primer layer.

Abstract: A powder coating composition for forming a low gloss coating film based on thermosetting polyester resins exhibiting only a little fluctuation of the resultant low gloss value even if an unequality in the mixing proportion of components or in the baking condition exists, comprising three thermosetting polyester resins (A), (B) and (C) and a hardener (D), wherein the weight ratio of the polyester resin (A) to the polyester resin (B) is in the range of 90/10-70/30 and that of the polyester resin (A) to the polyester resin (C) is in the range of 85/15-60/40 and the equivalent ratio of the polyester resin (A, B or C) to the hardener (D) is each in the range of 0.8 to 1.25 and wherein the polyester resins (A), (B) and (C) are selected from those in which the moduli of elasticity E.sub.a, E.sub.b and E.sub.c for the products of the curing reaction of these resins with the hardener (D), respectively, after 3 minutes' curing with the hardener (D) at 200.degree. C.

Abstract: Aqueous dispersions having low VOCs are dispersions or solutions of polyesters. The polyesters useful are formed from A) between about 30 and about 60 mole percent polycarboxylic acids, of which at least about 80 mole percent comprises cyclohexanedicarboxylic acids, B) between about 35 and about 70 mole percent polyols of which at least about 95 mole percent comprises diols, and between about 40 and about 100 mole percent of the polyol content comprising cycloaliphatic diols, and C) between about 5 and about 25 mole percent of a monomer having dihydroxy, monocarboxylic acid functionality. The molar ratio of (B+C)/A is between about 1.01 and about 1.30, whereby the polyester is hydroxyl-terminated having hydroxyl numbers of between about 20 and about 150 and acid numbers between about 30 and about 100. The weight average molecular weight of the polyester is between about 1000 and about 20,000.

Abstract: The invention relates to the use of polybasic acids as gloss reduction agents in the preparation of paint or coating compositions based on hydroxy or phenolic functional resins and also containing an amino crosslinking agent and a pigment. Cured coatings exhibiting good flexibility, hardness and solvent resistance, as well as reduced or controllable gloss are obtained.

Abstract: Polyester polymers having pendant carbamate groups are disclosed. The polymers are prepared by:(a) reacting a hydroxyalkyl cyclic carbonate with ammonia, ammonium hydroxide, or a primary amine to form a dihydric alcohol having a carbamate group appended thereto,(b) reacting the dihydric alcohol from (a) and a cyclic anhydride to form a half-ester diacid having a carbamate group appended thereto, and(c) reacting a mixture comprising the half-ester diacid from step (b) and a polyol to form a polyester having carbamate groups appended thereto.

Abstract: A coating composition and method for protecting anodized aluminum, and the coated product are disclosed, wherein the coating comprises a crosslinking agent; a film-forming resin selected from the group consisting of polyester polymers, thermosetting acrylic polymers, and mixtures thereof; and an epoxy silane. The combination provides exceptional adhesion of the coating to anodized surfaces as well as good hardness.

Abstract: The present invention relates to acid-curing aqueous coating compositions, in particular for the coating of veneer films and continuous edges, containing an amino resin and a hydroxyl-containing polyester.

Abstract: Novel MRI contrast agents that comprise one or more metal-ion chelates in juxtaposition with one or more free-radical nitroxide compounds in a polymeric or oligomeric molecule. Both the chelate units and the free radical units may, independently, be inside the main chain of the polymer or in a side chain of the linkage portion of the polymer. The number of combined units of chelates and free radicals in the polymer or oligomer is at least two.

Abstract: Novel polyesters prepared from a diol, a dicarboxylic acid or ester forming reactive derivative thereof and an aromatic amino acid, ester or alcohol are disclosed.

Abstract: The polyester monofilament of this invention has a terminal carboxyl group concentration of not more than 10 equivalent weights/10.sup.6 g and contains an unaltered carbodiimide compound in an amount in the range of from 0.005 to 1.5% by weight and a fluorine type polymer in an amount in the range of from 0.01 to 30% by weight. The polyester monofilament of this invention has an excellent resistance to hydrolysis and proof against staining. When used under high temperature and high humidity conditions susceptible to hydrolysis and the collection of stains, as when used in a papermaking drier canvas, it brings about a notable effect of prolonging the service life of the canvas and lengthening the cycle of cleaning.

Abstract: This invention relates to a polymeric vehicle comprising a modified polymer containing covalently bonded mesogenic groups. The modified polymer may be used as the sole component of the polymeric vehicle for a coating to which may be added solvents and known additives to provide a formulated coating. The polymeric vehicle may further include other modified or unmodified polymers and cross-linking resins. The polymeric vehicle provides a coating binder and coating film of high hardness, flexibility and impact resistance.

Abstract: Provided are light-absorbing polymers which contain backbone unsaturations and which are produced by knoevenagel condensation and which are useful for imparting color and/or ultraviolet light screening properties to thermoplastic resins. The polymeric colorants or UV absorbers may be added during the formation of the uncolored thermoplastic polymer or melt or solution blended with other thermoplastic polymers.

Abstract: The present invention relates to acid-curing aqueous coating compositions, in particular for the coating of finish sheeting and continuous edging, which contain aminoplast resin and hydroxyl-containing polyesters, wherein the polyester is prepared froma) 33 to 55 mol % of a dicarboxylic acid component obtained froma.sub.1) 50 to 100 mol % of olefinically unsaturated aliphatic dicarboxylic acidsa.sub.2) 0 to 50 mol % of saturated aliphatic dicarboxylic acidsa.sub.3) 0 to 50 mol % of saturated aliphatic dicarboxylic acids andb) 67 to 45 mol % of a polyol component obtained fromb.sub.1) 20 to 90 mol % of at least one monomeric and/or oligomeric glycol having 2 to 4 carbon atoms per glycol segment and number average molecular weights smaller than 200b.sub.2) 5 to 30 mol % of at least one polymeric glycol having 2 to 4 carbon atoms per glycol segment and a number average molecular weight between 300 and 1000 andb.sub.

Abstract: Provided are crosslinkable semicrystalline polyester plasticizers useful in thermosetting powder coating compositions. The plasticizers of the present invention are preferably comprised of residues of 1,6-hexanediol and 1,12-dodecanedioic acid, and optionally, residues of trifunctional acids or polyols such as trimethylol-propane, glycerol, trimellitic acid, and the like. The thermosetting powder coating compositions also provided by the present invention exhibit markedly superior properties when compared to compositions lacking said plasticizer. Such coatings exhibit better smoothness, less orange peel, better impact strength and flexibility. In the case of the less-reactive crosslinker such as self-blocked isophorone isocyanate (IPDI), the plasticizers greatly improve the reactivity of the composition and reduce the cure requirement.

Abstract: The present invention provides a biaxially oriented polyester film made of a polyester containing 0.01 to 5% by weight of crosslinked polymer particles characterized by:(1) having a particle size distribution ratio (.gamma.) of 1.3 to 3.5,(2) having an average particle diameter of 0.1 to 2 .mu.m,(3) having a non-circularity of 3.4 or more, and(4) having a standard deviation of noncircularity, of at least 0.16.The polyester film of the present invention has a flat surface having a small number of large protuberances, excellent running property and excellent winding property, and can be produced economically. The film has excellent properties for use as a base for various magnetic recording media.

Abstract: An aqueous dispersion suitable for use as various coatings is provided. The dispersion includes polyester resin (A), a water soluble organic compound (B), water (C), and a neutralizer (D). The polyester resin has an acid number of 50 equivalents/10.sup.6 g or more. The polycarboxylic acid component of the resin contains aromatic dicarboxylic acid having no metal sulfonate groups in an amount in the range of 50 to 99.99 mole percent, and dicarboxylic acid having a metal sulfonate group in an amount in the range of 0.01 to 20 mole percent based on the total moles of the polycarboxylic acid component. The polyol component of the resin contains diol in an amount in the range of 30 to 100 mole percent based on the total moles of the polyol component. The diol has an alkyl group with 1 to 3 carbon atoms on a side chain, and the total number of carbon atoms in the diol is 6 to 25. The water soluble organic compound has a boiling point in the range of 60.degree. to 250.degree. C.

Abstract: Provided are polyester resins containing hydroxy functionalized isophthalate ester moieties useful in coating compositions. The invention provides both solvent-borne as well as water-borne coating compositions comprised of the resins and a crosslinker such as a melamine-type crosslinker. Polyester resins of the present invention having a T.sub.g of greater than about 50.degree. C. are useful in thermosetting powder coating compositions. The coatings thus provided possess excellent acid resistance, hardness, impact resistance, and stain resistance.

Abstract: This invention relates to an aqueous dispersion of a water-dissipatable polyester and a styrenated acrylic copolymer in combination with either an acrylic polymer or a hydantoin-formaldehyde resin.

Abstract: The present invention relates to a polycondensation and/or addition product containing carboxyl groups and amino groups. This can be obtained by reactinga) polycarboxylic acids or anhydrides thereof, if appropriate together with monocarboxylic acids,b) polyols, if appropriate together with monools, and, if appropriatec) further modifying components, and, if appropriate,d) a component which is capable of reacting with the reaction product from a), b) and, if appropriate, c), with the proviso that the final product contains tertiary amino groups which originate from components a) and/or b) and/or d), and the reaction product from a), b), if appropriate c) and if appropriate d) has an acid number from 5 to 200, preferably 10 to 130, and an amine number from 3 to 150, preferably 10 to 100.

Abstract: The present invention is directed towards a mixture of phenol terminated diesters and an amino crosslinking agent. The diesters are characterized by a structure consisting of ##STR1## wherein R is an aliphatic divalent hydrocarbon radical containing 2 to 40 carbon atoms or a mixture of such radicals, provided however that R contains at least about 8 carbon atoms when n is 0 and p is 0, R.sub.1 is an aliphatic or cycloaliphatic hydrocarbon radical containing 2 to 40 carbon atoms or a mixture of such radicals, R.sub.2 is a aliphatic, aromatic or a mixture of aliphatic and aromatic hydrocarbon radicals having from 2 to 40 carbon atoms, A is divalent aromatic radical selected from the group consisting of phenylene, naphthylene or bis phenylene, p is 0 or 1, n is 0 or an integer ranging from 1 to about 40, provided however, that p is 0 when n is 0 and p is 1 when n is an integer and ##STR2## wherein q is an integer ranging from 1 to about 40, n is 0 or an integer ranging from 1 to about 40 and A, R.sub.1 and R.

Abstract: An elastomer is molded by a reaction injection molding of polyurethane resins, polyurea resins, polyurethane/urea resins and polyurea/amide resins in the presence of an internal release agent which is a polyester condensate of a saturated or unsaturated fatty acid having a hydroxy group produced by transesterification or a molecular end-aminated or iminated polyester condensate. The elastomer has a good releasing property and a good coating property.

Abstract: The present invention is directed towards liquid coating formulations containing a mixture of a curable polyester or diester resin, an amino crosslinking agent and a pigment wherein the pigment is dispersed in the coating solution at a weight loading .level such that the pigment to binder ratio falls within the range of from greater than 2.0 to 1 up to about 5.0 to 1. The polyester or diester resins employed in the coating formulations are such that when formulated with an appropriate crosslinking agent, acid catalyst and pigment within the ranges stated above and properly applied to a substrate and cured, produce coatings having a minimum Knoop hardness of at least about 4 and a flexibility (T-bend test) of less than 6, generally less than about 5, and a MEK rub value of greater than 5, more preferably at least about 15 and most preferably greater than 50.

Abstract: A coating composition having a total solids content of at least about 85 wt. %, based on the weight of the composition, a volatile organic chemical content of less than about 15 wt. %, based on the weight of the composition and a Brookfield viscosity of about 500-2,000 centipoises at 25.degree. C. The composition contains a polyester polyol having a weight average molecular weight of about 300-900 and a hydroxy number of about 150-400; at least one thermosettable polyester; an alkoxy aminoplast resin; a reactive diluent present in an amount of 0-30 wt. %, based on the weight of the composition; and an acid catalyst curing agent.

Abstract: Provided are polyester resins containing hydroxy functionalized isophthalate ester moieties useful in coating compositions. The invention provides both solvent-borne as well as water-borne coating compositions comprised of the resins and a crosslinker such as a melamine-type crosslinker. Polyester resins of the present invention having a T.sub.8 of greater than about 50.degree. C. are useful in thermosetting powder coating compositions. The coatings thus provided possess excellent acid resistance, hardness, impact resistance, and stain resistance.

Abstract: The reaction of less than the stoichiometric amount of a methoxymethyl aminotriazine with a linear, hydroxyl-terminated polyester in a mixture of the two wherein the polyester to triazine ratio is from about 97:3 to about 70:30 by weight affords a storage stable coating powder which forms an attractive, pin hole-free film when fused on a substrate at thicknesses of from about 3.9 to about 6.8 mils.