Abstract: The polyester resin of the present invention is produced by polymerizing a monomer mixture comprising a glycol component containing 5 to 60 mol % of a spiroglycol represented by Formula I: and 30 to 95 mol % of ethylene glycol, and a dicarboxylic acid component containing 80 to 100 mol % of terephthalic acid and/or an ester thereof. The polyester resin has (1): an intrinsic viscosity of 0.4 to 1.5 dL/g, (2) a melt viscosity of 700 to 5,000 Pa·s, (3) a molecular weight distribution of 2.5 to 12.0; and (4) a glass transition temperature of 90° C. or higher and a cooling crystallization exotherm peak of 5 J/g or lower. The polyester resin of the present invention is excellent in heat resistance, transparency, mechanical properties, moldability and fabrication qualities and useful for producing shaped articles such as films, sheets, hollow containers and foamed products.

Abstract: The invention relates to a process for making a high molecular weight pre-gel for a cross-linked branched polyester comprising: a) reacting polyester precursor repeat units via condensation polymerization in a continuous or semi-continuous, or batch reactor stage to form a low molecular weight pre-gel; and b) further reacting the low molecular weight pre-gel via condensation polymerization in a continuous thin-film reactive vacuum processing stage to form a high molecular weight pre-gel.

Abstract: In a process for producing a polyester containing 1,4-cyclohexanedimethanol (CHDM) as one of its glycol components, an aqueous or a methanolic slurry comprising CHDM and a dicarboxylic acid is prepared. The slurry is maintained at a temperature below the melting point of CHDM. The slurry is then fed into a reactor. The slurry is esterified at sufficient temperatures and pressures, and optionally in the presence of a suitable catalyst, to effect esterification. A prepolymer is formed. The prepolymer is then polycondensed at sufficient temperatures and pressures in the presence of a suitable catalyst to effect polycondensation to form a polyester.

Abstract: The present invention relates to polyester polyols having a hydroxyl number of 60 to 400, which are esterification products of a) an alcohol component containing one or more aliphatic or cycloaliphatic alcohols having at least 3 hydroxyl groups and 3 to 8 carbon atoms with b) a carboxylic acid component containing itaconic acid, maleic acid, their anhydrides and/or fumaric acid, provided that at least 10 mole % of either component a) or component b) is an aliphatic or cycloaliphatic, saturated or unsaturated monoalcohol or monocarboxylic acid having 1 to 18 carbon atoms. The present invention also relates to two-component polyurethane coating compositions containing these polyester polyols and lacquer polyisocyanates as the binder and to their use for coating substrates, in particular automotive substrates.

Abstract: A polyester resin composition is disclosed, comprising poly(trimethylene terephthalate) in a proportion of 90 wt % or more, wherein the resin composition has an intrinsic viscosity of from 0.4 to 2 and contains a phosphorus compound corresponding to from 10 to 250 ppm in terms of the amount of phosphorus element, a cyclic dimer in an amount of not exceeding 3 wt % and a bis(3-hydroxypropyl)ether in an amount of 2 wt % or less. This polyester resin composition has excellent spinning stability and high melt stability and is used for the production of a poly(trimethylene terephthalate)-based fiber having excellent whiteness and high tenacity.

Abstract: A process for producing a polyester that comprises 65 to 90 wt. % poly(alkylene ether) glycol. The process comprises the step of copolymerizing a preformed polyester polymer having an inherent viscosity of at least 0.4 dL/g and a poly(alkylene ether) glycol, to obtain said polyester comprising said 65 to 90 wt. % poly(alkylene ether glycol).

Abstract: A coating composition for application to primed metal substrates as a topcoat is disclosed. The coating composition is especially useful on metal closures for vacuum-packed food products. The coating composition is free of a halide-containing vinyl polymer and comprises: (a) an acrylate co-polymer having pendant hydroxy groups, (b) a hydroxy-terminated polyester, (c) a crosslinker, and (d) a nonaqueous carrier.

Abstract: In order to offer coatings with improved resistance to solvents which can be prepared by cationic polymerization under irradiation, the choice is made of a composition comprising at least one monomer, oligomer or polymer of general formula (I): in which: A1 is chosen from polyester blocks, polyurethane blocks, hydrocarbon-comprising backbones of mono- or polycarboxylic acid and addition products of a polycarboxylic acid and of a cycloaliphatic diepoxide, m is a number from 1 to 6, R1 is a cycloaliphatic group carrying a hydroxyl group situated in the a position with respect to the oxygen atom to which R1 is bonded, R2 is a second cycloaliphatic group carrying an oxirane group situated at the chain end, and B is chosen from one or more covalent bonds, an oxygen atom and linear, branched or cyclic hydrocarbon-comprising radicals.

Abstract: Biodegradable polyether esters P1 obtainable by the reaction of a mixture consisting essentially of: (a1) a mixture essentiall) of 20 to 95 mol % adipic acid or ester-forming derivatives thereof or mixtures thereof, 5 to 80 mol % terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and 0 to 5 mol % of a sulphonate group-containing compounds In which the sum of the individual mol percentages is 100; and (a2) a mixture of dihydroxy compounds consisting essentially of (a21) 15 to 99 mol % of a dihydroxy compound selected from the group consisting of C2-C6 alkane diols and C5-C10 cycloalkane diols; (a22) 85 to 0.2 mol % of an ether function-containing dihydroxy compound as in formula I HO—[(CH2)n—O]m—H in which n is 2, 3 or 4 and m is a whole number from 2 to 250, or mixtures thereof, in which the molar ratio of (a1) to (a2) is in the range from 0.4:1 to 1.

Abstract: A coating powder comprising a macrocyclic oligomer and a ring-opening polymerization agent is applied to an article, fused, and converted to a linear polymer at a temperature of from about 160 to about 400° C. The powder has the low melt viscosity and friability of a thermoset powder but is converted at high fusing temperatures to a tough coating having the good impact resistance and good elongation of a thermoplastic powder. The oligomer is a polyester, polycarbonate, polyamide, polyimide, polyamideimide. The article may be coated electrostatically or in a fluidized bed.

Abstract: Disclosed is a novel, high molecular weight aliphatic polyester having excellent mechanical strengths such as breaking strain and containing a copolymer structure with 3-alkoxy-1,2-propane diol and a method of producing the aliphatic polyester in an industrially advantageous manner. The aliphatic polyester is a biodegradable high molecular weight aliphatic polyester having an ester structure derived from 3-alkoxy-1,2-propane diol.

Abstract: An aromatic group containing copolyester resin composition which has good biodegradability and physical properties, wherein; (i) 0.1 wt % to 30 wt % of an aliphatic prepolymers having number average molecular weight of from 300 to 30,000; (ii) one or a plurality of aromatic dicarboxylic acid (or an acid anhydride thereof which containing aromatic group in the molecule; (iii) one or a plurality of aliphatic (including cyclic type) dicarboxylic acid (or an acid anhydride thereof); and (iv) one or a plurality of aliphatic (including cyclic type) glycol, wherein the copolyester resin has number average molecular weight of from 30,000 to 90,000, weight average molecular weight of from 100,000 to 600,000, melting point of from 70° C. to 150° C., and melt index of from 0.1 to 50 g/10min. (190° C., 2,160 g), and the process for preparing and/or producing the same.

Abstract: Carboxyl functional polyester resins obtainable by reaction of: a) at least a compound of the formula  wherein a≧1, and wherein R1 and R2 each may represent an alkyl group having from 1 to 4 carbon atoms or wherein R1 and R2 may form together with the group —CH—(CH2)x—CH˜ a cycloalkyl group and preferably 1,4-cyclohexane dicarboxylic acid (A1), mixed with smaller molar amounts of monoglycidyl esters of &agr;,&agr;-branched carboxyl acids containing from 5 to 19 carbon atoms in the acid moiety (A2), and b) at least one compound B comprising one primary- or secondary hydroxyl group and one tertiary aliphatic carboxyl group, and c) optionally one diol compound C, and d) optionally a dihydroxymonocarboxylic acid compound D, and e) optionally a trihydroxyalkane (E1) or tetrahydroxyalkane (E2), the molar ratio of compounds A1:(C+A2):B:D:E1:E2, being, (X+Y+1):Y:2:X:Q:P, wherein X ranges from 0 to 8, Y ranges from 1 to 8, Q ranges from 0 to 3 and w

Abstract: The process for producing polyesters, and in particular, polyethylene terephthalate (PET) which includes the use of antimony catalyst that is acidic phosphorus additive involves the addition of the catalyst prior to or together with the additive. Moreover, the amount of additive is selected so as to provide a resin that is at least substantially free of non-acidic inorganic compounds such as antimony phosphate which can be formed by the reaction of the catalyst with the additive. The process preferably includes an esterification step, a prepolymer step, and a polymerization step with the antimony catalyst being added prior to, during, or after, the esterification step while the phosphorus-containing additive is introduced prior to or during the prepolymer stage. Polyesters having low levels of elemental phosphorus are also disclosed.

Abstract: A blend of a macrocyclic polyester oligomer and a polymerization catalyst as a one component ready-to-use material with a long shelf life enables production of parts from macrocyclic polyester oligomers without the modification of existing equipment, thereby reducing time and cost of manufacture while expanding the application of macrocyclic polyester oligomers. In this blend material, the macrocyclic polyester oligomer remains intact in solid state at ambient conditions. Upon melting, the blend material initially forms low viscosity fluid, and then rapidly polymerizes to form high molecular weight polyesters which subsequently solidify to form crystalline polymers. In the case of certain macrocyclic polyester oligomers, for example, poly(1,4-butylene terephthalate), demolding can take place at the polymerization temperature, e.g., at about 180° C. to 200° C., because the resulting polyester polymer solidifies fairly rapidly at that temperature without cooling.

Abstract: The invention relates to a process for the production of spherical, polyester particles, wherein the particle size can be exactly adjusted in the range of 1 to 200 &mgr;m and a particle size distribution with a span (=d90−d10/d50)≦1.5, as well as the use of the produced particles for toner compositions in electrophotographic and direct printing systems and powder coatings.

Abstract: A polyester is provided which facilitates the separation of blood into light and heavy phases via centrifugation in a blood collection vessel. The polyester is useful as a component of a partitioning composition formulated to have appropriate specific gravity to be positioned intermediate the light and heavy blood phases during centrifugation. The polyester composition can be prepared with relative ease compared to prior art polyesters useful in blood partitioning compositions. The polyesters of this invention comprise a dicarboxylic acid member, a polymeric fatty acid, a diol member and a moiety having at least one polymerizable carbon-carbon double bond and at least one functional group capable of reacting with the ends of the polyester chain. The polyesters have a lower viscosity when synthesized and are later cured to increase their viscosity to the desired level.

Abstract: A reactor grade copolyester composition, as well as a heat-shrinkable film made therefrom, unexpectedly has higher ductility than a multi-component blend of copolyesters with the same monomer concentrations. The reactor grade copolyester composition is made from a diacid component of at least about 90 mole percent and a diol component of (a) about 72 to about 88 mole percent ethylene glycol, about 10 to about 15 mole percent 1,4-cyclohexanedimethanol, and about 2 to about 13 mole percent diethylene glycol, or (b) about 59 to about 77.5 mole percent ethylene glycol, about 15 to about 28 mole percent 1,4-cyclohexane-dimethanol, and about 7.5 to about 13 mole percent diethylene glycol. Further, the heat-shrinkable film may be produced to closely match the shrink characteristics of polyvinyl chloride by varying the amounts of the diol components of the reactor grade copolyester composition. Furthermore, a reactor grade copolyester composition has a b* color value of −1.0 to less than 4.

Abstract: Process of gelification of aqueous medium with a copolyester oligomer comprising essentially oxyalkylenated or ocycycloalkylenated or polyoxyalkylenated dicarboxylate units at least 35 mole % of said units being similar units of which the correspondent homolymer is crystalline, at least 7 mole % of said units being bearing units of hydrophobic(s) sulfonated functions, the molecular mass in weight of said copolyesters oligomer being less than 20.000. For example: the terephtalic polyoxyethylenated sulfonated oligomers of high content of polyethyleneterephtalate.

Abstract: A process for producing an unsaturated polyester comprising the steps of (1) (A)depolymerizing polyethylene terephthalate with a polyhydric alcohol, (B) adding maleic anhydride to the depolymerization product to allow them to react with each other, and (C) adding dicyclopentadiene to the reaction mixture to cause addition reaction and (2) adding a polyhydric alcohol and a polybasic acid to the reaction product obtained in step (1) to cause polycondensation reaction is disclosed. An unsaturated polyester resin composition comprising the unsaturated polyester and a polymerizable unsaturated monomer, and a molding compound comprising the unsaturated polyester resin composition are also disclosed.

Abstract: A multilayered polymer film includes a first set of optical layers and a second set of optical layers. The first set of optical layers is made from a polyester which is often birefringent. The polyesters of the first set of optical layers typically have a composition in which 70-100 mol % of the carboxylate subunits are first carboxylate subunits and 0-30 mol % are comonomer carboxylate subunits and 70 to 100 mol % of the glycol subunits are first glycol subunits and 0 to 30 mol % of the glycol subunits are comonomer glycol subunits, where at least 0.5 mol % of the combined carboxylate and glycol subunits are comonomer carboxylate or comonomer glycol subunits. The second set of optical layers comprise copolyesters wherein 0.01 to 2.5 mol % of the combined carboxylate and glycol subunits are carboxylate subunits derived from compounds having three or more carboxylate or ester functionalities, glycol subunits derived from compounds having three or more hydroxyl functionalities, or combinations thereof.

Abstract: A method of producing a polyester from high-purity bis-&bgr;-hydroxyethyl terephthalate as a raw material containing cations and anions in trace amounts. Polyester production raw materials including bis-&bgr;-hydroxyethyl terephthalate containing cations and anions in a total weight of not more than 50 ppm, ethylene glycol and antimony trioxide and/or germanium dioxide as a polymerization catalyst are heated without substantially distilling off ethylene glycol and then heated under reduced pressure to be polycondensed while ethylene glycol is distilled off.

Abstract: A process for preparing a polyester carbonate is provided. The process comprises the steps of: (I) reacting a diacid with a carbonic acid diester and a catalyst in the presence of a polycarbonate oligomer via melt condensation polymerization to form a pre-polymer; and (II) reacting the pre-polymer via solid state polymerization to form a polyester carbonate.

Abstract: A polyester polymer is a condensation product of a diol component and a dicarboxylic acid component, and the diol component (i) includes at least one tricyclo[5.2.1.02,6]decanedimethanol represented by the following formula (1): wherein two hydroxymethyl groups are bound to carbon atoms constituting tricyclo[5.2.1.02,6]decane ring and wherein each of carbon atoms constituting the ring may have at least one additional substituent; or (ii) the dicarboxylic acid component includes at least one tricyclo[5.2.1.02,6]decanedicarboxylic acid represented by the following formula (2): wherein two carboxyl groups are bound to carbon atoms constituting tricyclo[5.2.1.02,6]decane ring and wherein each of carbon atoms constituting the ring may have at least one additional substituent. The polyester polymer has an excellent formability in addition to a high heat resistance, low water absorption property, and satisfactory optical characteristics.

Abstract: Disclosed is a method for preparing polyester resins copolymerized with 1,4-cyclohexanedimethanol. In the preparation method, ethylene glycol and 1,4-cyclohexanedimethanol are fed with the molar ratio of the whole glycol component to terephthalic acid ranging from 1.3 to 3.0, and then esterified.

Abstract: The invention relates to a powder paint composition comprising a polymer that contains endomethylene tetrahydrophthalic acid units and a crosslinker. The polymer is obtained by preparing an unsaturated polymer in a first step, which then reacts with cyclopentadiene at a temperature between 160 ° C and 220 ° C in a second step. The polymer preferably contains more than 10 wt.% endomethylene tetrahydrophthalic acid units and is preferably an unsaturated polymer.

Abstract: The present invention is a method of preparing a high molecular weight copolyester bottle resin that has excellent melt processing characteristics. The method includes the steps of reacting a diacid or diester component and a diol component to form modified polyethylene terephthalate, wherein diol component is present in excess of stoichiometric proportions. Together, the diacid or diester component and the diol component must include at least 7 percent comonomer. The remainder of the diacid component is terephthalic acid or dimethyl terephthalate and the remainder of the diol component is ethylene glycol. The modified polyethylene terephthalate is copolymerized in the melt phase to an intrinsic viscosity of between about 0.25 dl/g and 0.40 dl/g to thereby form a copolyester prepolymer. Thereafter the copolyester prepolymer is polymerized in the solid phase to form a high molecular weight bottle resin that has an intrinsic viscosity of at least about 0.70 dl/g, and a solid phase density of less than 1.

Abstract: Disclosed is a method for preparing polyester resins copolymerized with 1,4-cyclohexanedimethanol. In the preparation method, ethylene glycol and 1,4-cyclohexanedimethanol are fed with the molar ratio of the whole glycol component to terephthalic acid ranging from 1.3 to 3.0, and then esterified.

Abstract: A copolyether composition that can be used to produce a dyeable polyester is provided. The composition can comprise repeat units derived from a first diol such as, for example, 1,3-propanediol and a sulfonated dicarboxylic acid such as, for example, 5-sulfo-isophthalic acid. The dyeable polyester composition can comprise repeat units derived from the copolyether composition, an acid such as, for example, terephthalic acid, and a second diol such as, for example, 1,3-propanediol. Also disclosed is a process that can be used for producing the copolyether composition. The process comprises contacting the first diol with the sulfonated dicarboxylic acid.

Abstract: The invention provides powder coatings that consistently produce durable finishes when cured, and are stable when uncured. These powder coatings of the invention include novel film forming systems. The novel film forming system, in turn, includes a polymer component and a crosslinker component. In one embodiment, the polymer component is novel; and, in another embodiment, both the polymer and crosslinker components are novel. The novel polymer component includes a novel polyester polyol. This novel polyester polyol includes the reaction product of a cycloaliphatic component and a polyfunctional isocyanurate component. The novel crosslinker component which can be used when practicing certain embodiments of this invention includes a novel, polyfunctional isocyanate compound which is at least partially blocked with at least one of the following: a polyhydroxy aromatic compound, or a mixture of a polyhydroxy aromatic compound and a hydroxy-functional ester compound.

Abstract: A branched polyester resin of the Formula wherein n and m represent randomly repeating segments, and the number of n and m segments in the polymer backbone are each of from about 10 to about 10,000; X is an alkylene group, an olefinic group, or an arylene; Y is an organic dioxy group or radical of I, II, or mixtures thereof; Z is an organic trioxy radical of III, IV, or mixtures thereof; and wherein R and R1 is a hydrogen atom or an alkyl group; G is an alkylene or arylene group, and a is 0 or 1.

Abstract: Amorphous copolyesters containing residues derived from 2,2′-[2,2-](sulfonylbis(4,1-phenyleneoxy))bis(ethanol). They exhibit enhanced heat distortion temperatures and glass transition temperatures without a significant increase in viscosity at low shear rates. The amorphous copolyesters also have improved resistance to attack by lipid solutions and are readily molded and extruded to form medial devices such as connectors, tubes, etc. which are useful for transport of lipids and other medical solutions.

Abstract: The invention provides powder coatings that produce consistent finishes when cured, and are stable when uncured. These powder coatings of the invention include novel film forming systems. The novel film forming system, in turn, includes a polymer component and a crosslinker component. In one embodiment, the crosslinker component is novel; and, in another embodiment, both the crosslinker and polymer components are novel. The novel crosslinker component includes a novel, polyfunctional isocyanate compound which is at least partially blocked with at least one of the following: a polyhydroxy aromatic compound, or a mixture of a polyhydroxy aromatic compound and a hydroxy-functional ester compound. The novel polymer component which can be used when practicing certain embodiments of this invention includes a novel polyester polyol. This novel polyester polyol includes the reaction product of a cycloaliphatic component and a polyfunctional isocyanurate component.

Abstract: The present invention is a method of preparing a high molecular weight copolyester bottle resin that has excellent melt processing characteristics. The method includes the steps of reacting a diacid or diester component and a diol component to form modified polyethylene terephthalate, wherein diol component is present in excess of stoichiometric proportions. Together, the diacid or diester component and the diol component must include at least 7 percent comonomer. The remainder of the diacid component is terephthalic acid or dimethyl terephthalate and the remainder of the diol component is ethylene glycol. The modified polyethylene terephthalate is copolymerized in the melt phase to an intrinsic viscosity of between about 0.25 dl/g and 0.40 dl/g to thereby form a copolyester prepolymer. Thereafter the copolyester prepolymer is polymerized in the solid phase to form a high molecular weight bottle resin that has an intrinsic viscosity of at least about 0.70 dl/g, and a solid phase density of less than 1.

Abstract: Biodegradable polyether esters P1 obtainable by reacting a mixture essentially comprising: (a1) a mixture essentially comprising: 20-95 mol % of adipic acid or ester-forming derivatives thereof or mixtures thereof, 5-80 mol % of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and 0-5 mol % of a compound containing sulfonate groups, where the total of the individual mole percentages is 100 mol %, and (a2) a mixture of dihydroxy compounds essentially comprising (a21) from 15 to 99.8 mol % of a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols, (a22) from 85 to 0.2 mol % of a dihydroxy compound containing ether functionalities of the formula I: HO—[(CH2)n—O]m—H  I where n is 2, 3 or 4 and m is an integer from 2 to 250, or mixtures thereof, where the molar ratio of (a1) to (a2) is chosen in the range from 0.4:1 to 1.

Abstract: Low molar mass polyester polyols having a weight-average molar mass M, of not more than 2000 g/mol, with hydroxyl numbers of from 80 to 300 mg/g and acid numbers of from 5 to 35 mg/g, comprising the stated mole fractions (in %=mol/100 mol) of structural units derived from: a) from 1 to 45% of aliphatic polycyclic polyhydroxy compounds having at least two hydroxyl groups per molecule, b) from 5 to 50% of branched aliphatic acyclic dihydroxy compounds, c) from 30 to 50% of aliphatic cyclic polycarboxylic acids, d) from 0 to 30% of aliphatic acyclic or monocyclic polyhydroxy compounds having three or more hydroxyl groups per molecule, and e) from 0 to 10% of polyfunctional compounds selected from aliphatic linear and monocyclic dihydroxy compounds, aliphatic linear and branched dicarboxylic acids, aromatic dicarboxylic acids and polycaboxylic acids having three or more carboxyl groups per molecule, and also f) from 0 to 10% of monofunctional units selected from monocarboxylic acids and monoalcohols,

Abstract: A polyester is provided which facilitates the separation of blood into light and heavy phases via centrifugation in a blood collection vessel. The polyester is useful as a component of a partitioning composition formulated to have appropriate specific gravity to be positioned intermediate the light and heavy blood phases during centrifugation. The polyester composition can be prepared with relative ease compared to prior art polyesters useful in blood partitioning compositions. The polyesters of this invention comprise a dicarboxylic acid member, a polymeric fatty acid, a diol member and a moiety having at least one polymerizable carbon—carbon double bond and at least one functional group capable of reacting with the ends of the polyester chain. The polyesters have a lower viscosity when synthesized and are later cured to increase their viscosity to the desired level.

Abstract: The invention relates to fibers, particularly binder fibers, made from copolyesters and the copolyesters themselves. The copolyesters of the invention are generally formed from a glycol component containing 1,3- or 1,4-cyclohexanedimethanol and ethylene glycol and at least one dicarboxylic acid component. Such copolyesters may be formed into a variety of products, especially binder fibers for nonwoven fabrics, textile and industrial yarns, and composites.

Abstract: Mixtures of low molar mass polyester polyols having a weight-average molar mass Mw of not more than 2000 g/mol, with hydroxyl numbers of from 80 to 300 mg/g and acid numbers of from 5 to 35 mg/g, comprising structural units derived from aliphatic polycyclic polyhydroxy compounds having at least two hydroxyl groups per molecule, branched aliphatic acyclic dihydroxy compounds, aliphatic cyclic polycarboxylic acids, aliphatic acyclic or monocyclic polyhydroxy compounds having three or more hydroxyl groups per molecule, and polyfunctional compounds selected from aliphatic linear and monocyclic dihydroxy compounds, aliphatic linear and branched dicarboxylic acids, aromatic dicarboxylic acids and polycarboxylic acids having three or more carboxyl groups per molecule, and also monofunctional units selected from monocarboxylic acids and monoalcohols, and acrylic copolymers made by radically initiated polymerisation in the presence of cyclic compounds that can react with hydroxy or acid functional comonomers can be us

Abstract: A mixture of a polyester, such as poly(ethylene terephthalate) PET, and a second polymer which is poly(vinyl alcohol) or an ethylene/vinyl alcohol copolymer when extrusion compounded exhibits a lower residual acetaldehyde content than does PET alone when similarly treated. The invention pertains to any polyester used in the manufacture of bottles or containers which in turn are used to store consumer materials, especially food, beverages and most especially water.

Abstract: Linear, carboxylic acid functional polyester resins produced by reaction of: (a) at least one aromatic and/or cycloaliphatic dicarboxylic acid compound A, comprising two aromatic and/or secondary aliphatic carboxyl groups in the 1,2-position, or anhydride thereof; (b) at least one hydroxyl monocarboxylic acid B1, comprising two aliphatic hydroxyl groups, which groups each independently may be primary or secondary hydroxyl groups and wherein the carboxylic acid group is a tertiary carboxyl group, mixed with a cycloaliphatic diol B2 in an amount of at least 5 wt %, relative to the weight of B1 and B2 together; (c) optionally an aliphatic dicarboxylic acid C, comprising an alkylene group having from 3 to 8 carbon atoms and having two terminal aliphatic carboxyl groups; and (d) optionally an aromatic monocarboxylic acid D, the molar ratio of the compounds A:B1+B2:C:D being X:Y+X+Z1:Y:Z2, wherein X ranges from 1 to 8, Y ranges from 0 to 8, Z1 ranges from −3 to 3 and Z2 ranges from 0 to 2,

Abstract: The invention concerns novel polyester polyols and their use as the polyol component in two-component polyurethane paints. The polyester polyols produce films which display exceptional properties after hardening. Owing to the low solvent requirement when reaction paints are prepared, they are particularly environmentally friendly. The permanence of the gloss of the hardened coatings should be stressed in particular.

Abstract: An amorphous copolyester having a maximum melt viscosity at 1 radian/second and at about 260 to about 290° C. of about 12000 poise, a glass transition temperature ranging from about 88° C. to about 120° C., and an inherent viscosity of at least about 0.6 dl/g. The amorphous copolyesters comprise the reaction product of a diol component and a dicarboxylic acid component. The diol component comprises residues of from about 5.0 to about 50 mole % of 2,2′-(sulfonylbis (4,1-phenyleneoxy))-bis(ethanol) which has the following chemical formula: and from about 50 to about 95 mole % of a mixture of at least two diols selected from the group consisting of ethylene glycol, neopentyl glycol, 1,3-propanediol, 1,4-butanediol, 1,4-cyclohexanedimethanol, and mixture thereof. The dicarboxylic acid component comprises residues of terephthalic acid, isophthalic acid, 1,4-cyclohexandedicarboxylic acid, 2,6-naphthalene dicarboxylic acid and mixtures thereof.

Abstract: A branched polyester resin of the Formula wherein n and m represent randomly repeating segments, and the number of n and m segments in the polymer backbone are each of from about 10 to about 10,000; X is an alkylene group, an olefinic group, or an arylene; Y is an organic dioxy group or radical of I, II, or mixtures thereof; Z is an organic trioxy radical of III, IV, or mixtures thereof; and wherein R and R1 is a hydrogen atom or an alkyl group; G is an alkylene or arylene group, and a is 0 or 1.

Abstract: Process for the manufacture of epoxy compounds having the formula wherein Rb represents a group selected from those of the formulae Rg&Parenopenst;Q&Parenclosest;b-alkyl(Q&Parenclosest;a—˜, by reaction of a compound with an alkylene oxide, in the presence of a certain catalyst.

Abstract: A water-reducible polyester resin for use in producing urethane coatings comprises the reaction product of: a) hexahydrophthalic anhydride, trimellitic anhydride or phthalic anhydride; b) 1,4-cyclohexane dimethanol or trimethylol propane or mixtures thereof; and c) a polyethylene glycol selected from the group consisting of polyethylene glycols, methoxy polyethylene glycols and trifunctional polyethylene glycols having a molecular weight no greater than approximately 1050; the reaction product having a functionality between approximately 2 and 2.6. Another water-reducible polyester resin comprises the same components and a specified nonionic surfactant. Urethane coatings containing such polyester resins and a diisocyanate are also disclosed.

Abstract: The invention concerns the use of monomer-free saturated or unsaturated polyester resins or mixtures of saturated and unsaturated polyester resins containing structural units of general formulae (I) and/or (II), in which n=1-10, as impregnation, sealing and coating compounds for electrical engineering and electronic components and for carrier substances for flat insulating materials.

Abstract: A cross-linkage polymeric casting composition including an effective amount of a divinyl ester monomer of a bicyclic or polycyclic compound, and optionally, a minor amount of a di- or polythio compound. The specification and claims include allylic ethers withing the definition of divinyl ester, for example bisphenol fluorene diglycidyl allylic ether and bisphenol S diallyl ether.

Abstract: The invention relates to spherical transparent polyester particles having a mean particle size <50 .mu.m and a monomodal particle size distribution having a span (d90-d10/d50)<2.5 which can be melted to form a continuous coating at temperatures <200.degree. C., to a process for their preparation and to their use for powder coatings.In a preferred embodiment the particles comprise units of formulae (I) and (2)--CO--X--CO (1)--O--D--O-- (2)whereX is a substituted or unsubstituted C.sub.6 to C.sub.14 -aromatic radical or an alkylene, polymethylene, cycloalkane or dimethylenecycloalkane group or a straight-chain or branched, saturated or unsaturated alkanediyl group andD is an alkylene, polymethylene, cycloalkane or dimethylenecycloalkane group or a straight-chain or branched, saturated or unsaturated alkanediyl group.

Abstract: A laminate sheet comprising (A) a polyester block copolymer which comprises 20 to 70 wt % of a hard segment consisting of an aromatic polyester and 80 to 30 wt % of a soft segment consisting of an aromatic polyester and (B) cloth on at least one side of which the polyester block copolymer is laminated, the melting point (T,.degree. C.) of the polyester block copolymer satisfying the following expressions: T0-5 >T>T0-60 and T>T'+10 (in which T is defined above, T0 is a melting point (0.degree. C.) of the aromatic polyester constituting the hard segment, and T' is a melting point (.degree. C.) of a random polymer obtained by adding 0.1 wt % of titanium tetrabutoxide to the polyester block copolymer and melting and kneading at 250.degree. C. for 3 hours).