Abstract: Polyester compositions composed of (a) titanium-catalyzed polyesters containing the residues of terephthalic acid, cyclohexanedimethanol, and ethylene glycol; and (b) at least one chelating phosphorus species and/or reaction products thereof, represented by the structure: The polyester compositions are characterized by having superior color and/or clarity.

Abstract: Described as one aspect of the invention are polymer blends comprising at least one polyester wherein the polymer blend comprises: (A) a polyester composition comprising (I) at least one polyester (Polymer A) which comprises: (a) a dicarboxylic acid component comprising: (i) 70 to 100 mole % of terephthalic acid residues; (ii) 0 to 30 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and (iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; and (b) a glycol component comprising: (i) about 10 to about 90 mole % of ethylene glycol residues; and (ii) about 90 to about 10 mole % of cyclohexanedimethanol residues; (II) residues of at least one titanium compound; and (III) at least one chelating phosphorus species, reaction products thereof, or mixtures thereof, represented by the structure: wherein: n=an integer from 1 to 4; R can be hydrogen or C1-C22-alkyl; and R1 and R2 each can be hydrogen, C1-C22-alkyl, hydroxyl, or aryl; wh

Abstract: Described as one aspect of the invention are polymer blends comprising at least one polyester wherein the polymer blend comprises: (A) a polyester composition comprising (I) at least one polyester (Polymer A) which comprises: (a) a dicarboxylic acid component comprising: (i) 70 to 100 mole % of terephthalic acid residues; (ii) 0 to 30 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and (iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; and (b) a glycol component comprising: (i) about 10 to about 90 mole % of ethylene glycol residues; and (ii) about 90 to about 10 mole % of cyclohexanedimethanol residues; (II) residues of at least one titanium compound; and (III) at least one chelating phosphorus species, reaction products thereof, or mixtures thereof, represented by the structure: wherein: n=an integer from 1 to 4; R can be hydrogen or C1-C22-alkyl; and R1 and R2 each can be hydrogen, C1-C22-alkyl, hydroxyl, or aryl; wh

Abstract: Described as one aspect of the invention are polyesters comprising (a) a dicarboxylic acid component comprising: (i) 70 to 100 mole % of terephthalic acid residues; (ii) 0 to 30 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and (iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; and (b) a glycol component comprising: (i) about 10 to about 90 mole % of ethylene glycol residues; and (ii) about 90 to about 10 mole % of cyclohexanedimethanol residues; (II) residues of at least one titanium compound; and (III) at least one chelating phosphorus species, reaction products thereof, or mixtures thereof, represented by the structure: wherein: n=an integer from 1 to 4; R can be hydrogen or C1-C22-alkyl; and R1 and R2 each can be hydrogen, C1-C22-alkyl, hydroxyl, or aryl; wherein the total mole % of the dicarboxylic acid component is 100 mole %, wherein the total mole % of the glycol component is 100 mole %; and wherein the inhe

Abstract: Polyester compositions are disclosed that include a melt-phase polyethylene terephthalate polyester having incorporated therein residues of a monomer having two or more fused aromatic rings, and that also include aluminum, and optionally an alkali metal or an alkaline earth metal. Also disclosed are articles that include the disclosed polyester compositions, and processes for producing such polyester compositions, that include the steps of forming a mixture comprising ethylene glycol, at least one acid chosen from terephthalic acid and derivatives of terephthalic acid, and a monomer having two or more fused aromatic rings; and reacting the mixture in the presence of aluminum, and optionally an alkali metal or an alkaline earth metal, to obtain the melt-phase polyethylene terephthalate polyester.

Abstract: Polyester compositions are disclosed that include a melt-phase polyethylene terephthalate polyester having incorporated therein residues of a monomer having two or more fused aromatic rings, and that also include titanium. Also disclosed are articles that include the disclosed polyester compositions, and processes for producing such polyester compositions, that include the steps of forming a mixture comprising ethylene glycol, at least one acid chosen from terephthalic acid and derivatives of terephthalic acid, and a monomer having two or more fused aromatic rings; and reacting the mixture in the presence of titanium to obtain the melt-phase polyethylene terephthalate polyester.