There is described an acrylic polyester resin, obtainable by grafting an acrylic polymer with a polyester material. The polyester material is obtainable by polymerizing (i) a polyacid component, with (ii) a polyol component. At least one of the polyacid component and/or the polyol component comprises a monomer having an aliphatic group containing at least 15 carbon atoms. At least one of the polyacid component and/or the polyol component comprises a functional monomer operable to impart functionality on to the polyester resin, such that an acrylic polymer may be grafted with the polyester material via the use of said functionality. Also provided is an aqueous coating composition comprising the acrylic polyester resin and a packaging coated with the composition.

A biodegradable aliphatic-aromatic polyester for the production of packaging films, having a Poisson's ratio (RVE) between 800 and 1700, comprising units of at least one dicarboxylic acid and at least one diol, in which Mn≥40000 and Mw/q≤90000, in which q is the percentage by weight of polyester oligomers having a molecular weight≤10000.

A biodegradable aliphatic-aromatic polyester for the production of packaging films, having a Poisson's ratio (RVE) between 800 and 1700, comprising units of at least one dicarboxylic acid and at least one diol, in which Mn≥40000 and Mw/q≤90000, in which q is the percentage by weight of polyester oligomers having a molecular weight≤10000.

The present invention discloses a composition that may be extruded or injection moulded, comprising a chemically modified hardwood lignin and a polyester. The chemically modified hardwood lignin constitutes 10 to 50 weight-% of the total weight of the composition.

The present invention discloses a composition that may be extruded or injection moulded, comprising a chemically modified hardwood lignin and a polyester. The chemically modified hardwood lignin constitutes 10 to 50 weight-% of the total weight of the composition.

A copolyester, comprising structural units represented by [I], [II], [III] and [IV]. The number of structural units represented by [III] is 1-99% of the number of structural units represented by [I], and the number of structural units represented by [IV] is 0-99% of the number of structural units represented by [I]. Also provided are a preparation method therefor and an application thereof. Because an introduced high-temperature self-crosslinking group and an ion group can improve the melt viscosity and the melt intensity during burning of a copolyester, and effectively enhance the char-forming capability of the copolyester, the copolyester exhibits excellent flame retardance and anti-dripping performance. The preparation process for the copolyester is mature, convenient to operate, and easy to control and apply to industrial production.

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This invention relates to at least one copolyester comprising repeat units of the following structure: wherein R and R″ represent residues of at least one diol; and wherein R and R″ are not the same; wherein R′ comprises residues of at least one diacid or diester and wherein n represents number of repeat units; and/or copolyester precursors thereof, and methods of manufacture.

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This invention relates to at least one copolyester comprising repeat units of the following structure: wherein R and R″ represent residues of at least one diol; and wherein R and R″ are not the same; wherein R′ comprises residues of at least one diacid or diester and wherein n represents number of repeat units; and/or copolyester precursors thereof, and methods of manufacture.

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The present invention is to provide a high-quality polyester resin that is produced by using a polymerization catalyst containing an aluminum compound and a phosphorus compound, that can reduce a catalyst cost, for which polymerization activity is high, and in which there is less foreign matter. The polyester resin contains an aluminum compound and a phosphorus compound used as a catalyst, and the amount of aluminum atom contained in the polyester resin is 9 to 20 ppm, the amount of phosphorus atom contained in the polyester resin is 13 to 31 ppm, a mole ratio of the phosphorus atom to the aluminum atom in the polyester resin is 1.32 to 1.80.

The present invention is to provide a high-quality polyester resin that is produced by using a polymerization catalyst containing an aluminum compound and a phosphorus compound, that can reduce a catalyst cost, for which polymerization activity is high, and in which there is less foreign matter. The polyester resin contains an aluminum compound and a phosphorus compound used as a catalyst, and the amount of aluminum atom contained in the polyester resin is 9 to 20 ppm, the amount of phosphorus atom contained in the polyester resin is 13 to 31 ppm, a mole ratio of the phosphorus atom to the aluminum atom in the polyester resin is 1.32 to 1.80.