Abstract: The present invention relates to a polyester resin. The polyester resin is useful for bottles, sheets, multilayer sheets, stretched films and fiber applications due to excellent heat resistance and transparency, and in particular, the polyester resin has little deterioration of physical properties such as yellowing, etc., during processing. A process for making the polyester resin includes an esterification reaction between a dicarboxylic acid that includes terephthalic acid and a diol that includes isosorbide in the presence of a catalyst, followed by a polycondensation reaction on a product of the esterification reaction. In some embodiments, an initial mixing ratio of the dicarboxylic acid and the diol is between 1:1.02 and 1:1.04.

Abstract: The present invention is a composition for liquid crystal polymer synthesis comprising an alicyclic dicarboxylic acid or its derivative (e.g., 1,4-cyclohexanedicarboxylic acid (CHDA)); an aromatic diol (e.g., hydroquinone (HQ)); an aromatic monocarboxylic acid having 7 to 10 carbon atoms and containing a hydroxyl group (e.g., 4-hydroxybenzoic acid, (HBA)); and an aromatic monocarboxylic acid having 11 to 20 carbon atoms and containing a hydroxyl group (e.g., 6-hydroxy-2-naphthalenecarboxylic acid (HNA)), and a liquid crystal polymer for electrical/electronic products, a polymer resin composition, and a molded product using the same.

Abstract: An oxygen-absorbing film having an oxygen-absorbing adhesive agent layer including a cured oxygen-absorbing adhesive agent resin composition, wherein the oxygen-absorbing adhesive agent layer has at least two glass transition temperatures, and wherein the lowest glass transition temperature among the glass transition temperatures is lower than 0° C. The cured oxygen-absorbing adhesive agent resin composition preferably includes: (A) an oxygen-absorbing polyester resin having a glass transition temperature of ?20 to 10° C. and (B) a saturated polyester resin having a glass transition temperature of ?10° C. or lower.

Abstract: Biorenewable polyesters and polyester copolymers derived from camphoric acid, aromatic dicarboxylic acid and aliphatic diols and methods of making those copolyesters and articles comprising copolyesters are disclosed. The disclosed biorenewable copolyesters may can have a Mn of from about 5,000 Da to about 500,000 Da. Also disclosed are preparation methods of various monomers e.g., cis-1,4-anhydroerythritol and bis(2-hydroxyethyl) camphorate. The disclosed biorenewable polyesters and polyester copolymers can be used for production of various articles utilizing a conventional polyesters or polyester copolymers, to replace, in part or in whole, a conventional non-biorenewable polyesters or polyester copolymers.

Abstract: Polyester resin compositions that are desirable for use in solvent-borne metal packaging and coil coating applications, the composition comprising: (a) a polyester comprising residues of: (i) terephthalic acid and isophthalic acid; and (ii) a blend of at least two glycols; wherein the amount of terephthalic acid is 15 mole percent to 20 mole percent and the amount of isophthalic acid is 80 to 85 mole percent wherein the total amount of terephthalic acid and isophthalic acid in the resin equals 100 mole percent; and (b) a non-aqueous solvent; wherein the composition remains clear at a temperature of 20-30° C. for at least 120 days.

Abstract: A poly(imide-ester-amide) copolymer and an optical film are provided. The poly(imide-ester-amide) copolymer includes imide bonds, ester bonds, and amide bonds. A molar ratio of the imide bonds, the ester bonds, and the amide bonds is 40 to 80:10 to 30:5 to 30. The imide bonds are derived from an aromatic diamine monomer and a tetracarboxylic dianhydride monomer. The amide bonds are derived from an aromatic dicarboxylic acid dichloride monomer and an aromatic diamine monomer or is derived from the aromatic dicarboxylic acid dichloride monomer and an alkoxysilane containing an amine group or an isocyanate group.

Abstract: Semicrystalline polyethylene-2,2?-bifuran-5,5?-dicarboxylate (PEBF) homopolyester or copolyester with up to 5 mole percent isophthalate or up to 2.7 mole percent terephthalate, based on the diacid component, or up to 2.5 mole percent 1,4-cyclohexanedimethanol (CHDM), based on the diol component, prepared by esterifying or transesterifying the diacid and the diol components with a catalyst including about 10 to about 50 ppm wt metal, and polycondensation, wherein the bifuran polyester has an intrinsic viscosity of at least 0.4 g/dL and a semicrystalline melting peak (Tm) with ?Hf equal to or greater than 5 J/g on the second heating ramp.

Abstract: A polyester resin has excellent adhesiveness and excellent grindability. The polyester resin includes a constitutional unit A derived from a carboxylic acid having a cyclic structure and containing 5 or more carboxyl groups, a constitutional unit derived from a dicarboxylic acid, and a constitutional unit derived from a polyhydric alcohol. The constitutional unit A has a content of 0.01 parts by mole or more and 45 parts by mole or less with respect to 100 parts by mole of the constitutional unit derived from a dicarboxylic acid. The hydroxyl value of the polyester resin is 6 mgKOH/g or more and 27 mgKOH/g or less.

Abstract: A liquid crystal polyester fiber includes a liquid crystal polyester having a tensile strength is 25 cN/dtex to 30 cN/dtex, and an orientation degree of the fiber is 94% to less than 100%. The liquid crystal polyester has repeating units of Formula (1), Formula (2), and Formula (3). At least one repeating unit of Formula (1), Formula (2), and Formula (3) contains 2,6-naphthylene. A content of the repeating unit containing the 2,6-naphthylene is 68 to 80 mol % with respect to a total content of all the repeating units. The liquid crystal polyester fiber has a fiber diameter of 5 to 100 ?m; (1) —O—Ar1—CO—, (2) —CO—Ar2—CO—, and (3) —X—Ar3—Y—, wherein Ar1 represents phenylene, naphthylene, or biphenylylene, Ar2 and Ar3 each independently represent phenylene, naphthylene, or biphenylylene, Ar1, Ar2, or Ar3 contains 2,6-naphthylene, X and Y independently represent oxygen or —NH—, and Ar1, Ar2, or Ar3 may be substituted.

Abstract: A method for manufacturing polyester polyhydric alcohol is provided. The method for manufacturing the polyester polyhydric alcohol includes steps as follows. A polybasic acid and a first polyhydric alcohol are mixed for a first oligomerization reaction, so as to form a first oligomer mixture. A second polyhydric alcohol is added into the first oligomer mixture for a second oligomerization reaction when a remaining amount of the first polyhydric alcohol in the first oligomer mixture is lower than or equal to 1 mol %, so as to form a second oligomer mixture. A catalyst is added into the second oligomer mixture for a polycondensation reaction, so as to obtain a polyester polyhydric alcohol product. The polyester polyhydric alcohol product has an Alpha value of lower than 30.

Abstract: An alkyd polymer composition for use in low volatile organic compound (VOC) containing products that exhibits a Gardner-Holdt viscosity with 30 weight % mineral spirits at 25° C. that is less than or equal to Z4, a thy-hard time of less than 10 hours when tested with metal driers according to ASTM D 1640-03, and a clear appearance. The alkyd polymer composition includes, as polymerized units an alkyd polymer of one or more fatty acids; a sugar alcohol having at least 6 carbon atoms; a polyol with four or more hydroxyl functional groups; and an aromatic polyacid with two carboxylic acid groups located in a meta-position relative to one another. The alkyd polymer composition includes at least one aliphatic oxide ring having one or more peaks located between 75 to 90 ppm as measured using C13 Nuclear Magnetic Resonance (NMR) spectroscopy.

Abstract: A functional resin composition comprising a biomass-derived component; an aromatic dicarboxylic acid; an alcohol component; a chain extender; and a multifunctional compound. The biomass-derived component is biomass-derived succinic acid or mixture with fossil-derived aliphatic dicarboxylic acid. The multifunctional compound is obtained by reaction of 4,4-bis(4-hydroxyphenyl)valeric acid and polyethylene glycol. The functional resin composition has excellent processability, moldability, tearing strength, tensile strength and excellent resistance to hydrolysis.

Abstract: A transparent, single- or multilayer, biaxially oriented polyester film with reduced oxygen transmission rates, having a barrier coating on at least one film surface, where the barrier coating is the drying product of an aqueous coating dispersion or aqueous coating solution, that includes at least one polyanion and at least one polyethyleneimine, where the polyanion has neutralized acid groups which are carboxylate, phosphate and/or sulfate groups, and the dry thickness d of the coating is in the range of 15 nm?d<200 nm. The biaxially oriented, coated polyester film has transparency?88% and oxygen permeation lower at least by a factor of two than that of the uncoated biaxially oriented film. A process for the production of the biaxially oriented, coated polyester film, and also its use as oxygen-barrier film.

Abstract: A polyethylene terephthalate composition (PET), an injection-molded bottle preform made from a PET composition, a refillable PET container blow-molded from the preform, catalyst compositions used for making the PET composition, methods for making the PET composition, methods for injection-molding a PET bottle preform, methods for blow-molding a refillable PET bottle from a preform and methods for improving the rewash stability and recyclability of refillable PET bottles particularly for carbonated soft drinks.

Abstract: Disclosed is a bio-based polycarbonate ester comprising: (i) repeat unit 1 obtained from a condensation reaction of 1,4:3,6 -dianhydrohexitol and carbonate; and (ii) repeat unit 2 obtained from a condensation reaction of 1,4:3,6-dianhydrohexitol and 1,4-cyclohexanedicarboxylate; and a preparation method for the bio-based polycarbonate ester, comprising the steps of: (1) preparing a compound 1,4-diphenyl-cyclohexanedicarboxylate through a trans-esterification or esterification reaction of a compound represented by formula 2 and phenol; and (2) preparing a compound comprising a repeat unit represented by formula 1 through a polycarbonate melt polycondensation reaction of the 1,4-diphenyl -cyclohexanedicarboxylate prepared in step (1), a compound represented by formula 4 and 1,4:3,6-dianhydrohexitol.

Abstract: Process for preparing copolyesters by introducing TPA, EG, and CHDM at an EG:TPA molar ratio of 2.3:1 to 2.7:1 into a reaction zone; reacting TPA with EG and CHDM at a temperature of at least 250° C. and pressure of up to 40 psi to form a first esterification product; passing the first esterification product to a reaction zone; esterifying the first esterification product at a temperature of at least 250° C. and pressure of up to 20 psi to form a second esterification product, passing the second esterification product to a reaction zone; polycondensing the second esterification product in the presence of a catalyst to form a prepolymerization product; passing the prepolymerization product to one or more reaction zones; and polycondensing the prepolymerization product in the presence of the catalyst to form a copolyester comprising 1.0 wt % or less of DEG, without requiring the use of DEG-suppressing additives.

Abstract: A coating composition includes: (a) 60 to 90 percent by weight of an active hydrogen-containing polyester having a number average molecular weight of at least 23,000, an acid value below 5 and a hydroxyl value below 10, (b) 0.1 to 10 percent by weight of a polyanhydride, and (c) 5 to 30 percent by weight of a curing agent reactive with the active hydrogens associated with (a) and (b), the percentages being based on weight of resin solids of the coating composition, where the reaction product of the coating composition forms a single coating without including a thermoplastic polymer. The coating composition is useful in coating food and beverage containers, particularly 2-piece cans formed by drawing and redrawing (DRD).

Abstract: A catalyst/initiator system that can be used for polymerizing ?-butyrolactone is described. The catalyst/initiator system includes a rare earth metal, a chiral ligand, at least one nucleophilic ligand, optionally at least one solvent ligand, and optionally an alkali based co-catalyst. The chiral ligand can have the structure of Formula A, as shown below: wherein Y represents rare earth metal Yttrium, Ph represents Phenyl radical and thf represents tetrahydrofuran solvent ligand.

Abstract: In one aspect, the disclosure relates to biorenewable polyesters and polyester copolymers derived from camphoric acid, methods of making same, and articles comprising same. The disclosed biorenewable polyesters can have a Mn of from about 5,000 Da to about 500,000 Da. Also disclosed herein is the preparation of various monomers useful in the reactions disclosed herein, e.g., cis-1,4-anhydroerythritol and bis(2-hydroxyethyl) camphorate. In various aspects, the disclosed biorenewable polyesters and polyester copolymers can be used to the production of various articles utilizing a conventional polyester or polyester copolymer, that is, to replace, in part or in whole, a conventional nonbiorenewable polyester or polyester copolymer. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

Abstract: A resin powder material comprising copolymerized polybutylene terephthalate resin powder and an inorganic substance, for example, fumed silica, having an average primary particle diameter of 100 nm or less in an amount up to 1.0 wt %. The polybutylene terephthalate resin comprises from 5 mol % to 15 mol % of Isophthalic acid and has powder with average particles diameter of 79 ?m and a maximum particles diameter of 106 ?m. Powder is obtained by grinding pellets of the copolymerized polybutylene terephthalate resin having a viscosity of 0.85 to 1.0 dl/g. Powder composition used for production of molded articles by powder laminate molding process.