The present invention relates to an aliphatic-aromatic copolyester resin composition with excellent hydrolysis resistance, wherein an unsaturated compound or an anhydride thereof is introduced into a molecular structure, and specifically, the aliphatic-aromatic copolyester resin composition can be manufactured into all molded products by extrusion, injection and the like, by solving problems with respect to physical properties, processability, reaction rates and water solubility of conventional biological resins.

An acrylic polyester resin is provided by grafting an acrylic polymer with a polyester material. Also provided is an aqueous coating composition with at least the acrylic polyester resin and a metal packaging container coated with the aqueous coating composition.

An acrylic polyester resin is provided by grafting an acrylic polymer with a polyester material. Also provided is an aqueous coating composition with at least the acrylic polyester resin and a metal packaging container coated with the aqueous coating composition.

An electrophotographic photoreceptor contains a conductive substrate, and a lamination type photosensitive layer disposed on the conductive substrate and including a charge generation layer and a charge transport layer, in which the charge transport layer contains a charge transport material, at least one of a polyester resin or a polycarbonate resin that has a constitutional unit containing biphenyl represented by Formula (1), and an aromatic dicarboxylic acid represented by Formula (2),

##STR00001## in Formula (1), j represents an integer of 0 or greater and 4 or less, j pieces of R.sup.11's each independently represent a methyl group or an ethyl group, k represents an integer of 0 or greater and 4 or less, and k pieces of R.sup.12's each independently represent a methyl group or an ethyl group, in Formula (2), p represents an integer of 0 or greater and 4 or less, p pieces of R.sup.21's each independently represent a methyl group or an ethyl group, q represents an integer of 0 or greater and 4 or less, q pieces of R.sup.22's each independently represent a methyl group or an ethyl group, r represents an integer of 0 or greater and 4 or less, r pieces of R.sup.23's each independently represent a methyl group or an ethyl group, and n represents 0 or 1.

An electrophotographic photoreceptor contains a conductive substrate, and a lamination type photosensitive layer disposed on the conductive substrate and including a charge generation layer and a charge transport layer, in which the charge transport layer contains a charge transport material, at least one of a polyester resin or a polycarbonate resin that has a constitutional unit containing biphenyl represented by Formula (1), and an aromatic dicarboxylic acid represented by Formula (2),

##STR00001## in Formula (1), j represents an integer of 0 or greater and 4 or less, j pieces of R.sup.11's each independently represent a methyl group or an ethyl group, k represents an integer of 0 or greater and 4 or less, and k pieces of R.sup.12's each independently represent a methyl group or an ethyl group, in Formula (2), p represents an integer of 0 or greater and 4 or less, p pieces of R.sup.21's each independently represent a methyl group or an ethyl group, q represents an integer of 0 or greater and 4 or less, q pieces of R.sup.22's each independently represent a methyl group or an ethyl group, r represents an integer of 0 or greater and 4 or less, r pieces of R.sup.23's each independently represent a methyl group or an ethyl group, and n represents 0 or 1.

Provided are polymers having a repeating unit including at least one astaxanthin moiety. Also provided are processes for preparing the polymers and various uses thereof.

Provided are polymers having a repeating unit including at least one astaxanthin moiety. Also provided are processes for preparing the polymers and various uses thereof.

Polyester polymers are described comprising polymerized units comprising a hydroxy functional aromatic group wherein the hydroxy group has been functionalized with an adhesion promoting group. In some embodiments, the polyester polymer comprises polymerized units have the general structure (A) wherein L.sub.1 and L.sub.2 are independently divalent linking groups comprising an ester group; and R.sub.A is an adhesion promoting group bonded to the oxygen atom by means of an ionic or covalent bond. In other embodiments, film articles, laminates are described and methods of making functionalized polyester polymers are described. ##STR00001##

Polyester polymers are described comprising polymerized units comprising a hydroxy functional aromatic group wherein the hydroxy group has been functionalized with an adhesion promoting group. In some embodiments, the polyester polymer comprises polymerized units have the general structure (A) wherein L.sub.1 and L.sub.2 are independently divalent linking groups comprising an ester group; and R.sub.A is an adhesion promoting group bonded to the oxygen atom by means of an ionic or covalent bond. In other embodiments, film articles, laminates are described and methods of making functionalized polyester polymers are described. ##STR00001##

Polyester pressure-sensitive adhesives are described. The polyester includes at least two different diacid residues and at least two different diol residues. The at least two different diacid residues include, based on the total moles of the at least two diacid residues, 20 to 80 mole percent of a residue of at least one aromatic dicarboxylic acid, and 20 to 80 mole percent of at least one of a residue of adipic acid or sebacic acid. The polyesters may include at least one pendant group containing an alkenyl group.