A method for manufacturing a polyester film for embossing that is made from a recycled polyester material. A part of the recycled polyester material is physically reproduced to obtain physically regenerated polyester chips. The physically regenerated polyester chips include physically regenerated regular polyester chips. Another part of the recycled polyester material is chemically reproduced to obtain chemically regenerated polyester chips. The chemically regenerated polyester chips include chemically regenerated regular polyester chips and chemically regenerated electrostatic pinning polyester chips. The physically regenerated polyester chips and the chemically regenerated polyester chips are mixed to form a base material. The base material is used to form a base layer that having a main component of regenerated polyethylene terephthalate. A surface coating layer is formed onto the base layer. A material of the surface coating layer includes a main resin, fillers, and melamine.

The present invention relates to a polyester container. The polyester container is formed from a polyester resin containing a particular content of diol moieties derived from isosorbide and diethylene glycol, and thus can show high transparency in spite of a great wall thickness thereof.

The invention concerns a method for producing a polyester containing at least one 1,4:3,6-dianhydrohexitol unit comprising:.Math.a step of introducing, into a reactor, monomers comprising at least one monomer (A) that is a diacid or a diester and at least one monomer (B) that is a 1,4:3,6-dianhydrohexitol;.Math.a step of introducing, into the reactor, a catalytic system comprising either a catalyst comprising the element germanium and a catalyst comprising the element aluminum, or a catalyst comprising the elements germanium and aluminum, or a mixture of said two catalysts;.Math.a step of polymerising said monomers to form the polyester;.Math.a step of recovering a polyester composition comprising the polyester and the catalytic system. The invention also concerns a polyester composition containing a catalytic system comprising either a catalyst comprising the element germanium and a catalyst comprising the element aluminum, or a catalyst comprising the elements germanium and aluminum, or a mixture of said two catalysts, and the use of same to reduce the colouring of the polyester.

A process for preparing a polyester having 2,5-furandicarboxylate units includes subjecting a starting composition including 2,5-furandicarboxylic acid and an aliphatic diol to esterification conditions to produce an ester composition and contacting the ester composition with a germanium containing solution at polycondensation conditions to produce a polyester including 2,5-furandicarboxylate units, and polyester including 2,5-furandicarboxylate units including of from 5 to 100 ppm of germanium and having a number average molecular weight of at least 30 kg/mol.

The polyester copolymer according to the present disclosure can be extrusion-molded, and thus, can be usefully applied for the preparation of various containers.

A polyester film for embossing and a method for manufacturing the same are provided. The polyester film for embossing is made from a recycled polyester material. The polyester film for embossing includes a base layer and a surface coating layer. The base layer is formed from a polyester composition.

The polyester composition includes regenerated polyethylene terephthalate as a main component. The surface coating layer is disposed on at least one surface of the base layer. A material of the surface coating layer includes a main resin, fillers, and melamine. Based on a total weight of the surface coating layer being 100 wt %, an existing amount of the main resin is 45 wt % to 95 wt %, an existing amount of the fillers is 0.1 wt % to 30 wt %, and an existing amount of the melamine is 0.01 wt % to 25 wt %.

The present invention relates to a polyester container. The polyester container is formed from a polyester resin containing a particular content of diol moieties derived from isosorbide and diethylene glycol, and thus can show high transparency in spite of a great wall thickness thereof.

A process for producing a polyester having 2,5-furandicarboxylate units includes: a) providing or producing a starting composition including 2,5-furandicarboxylic acid, an aliphatic diol and a suppressant for suppressing ether formation between the aliphatic diol molecules, b) subjecting the starting composition to esterification conditions to produce an ester composition, and c) contacting the ester composition with a germanium containing catalyst at polycondensation conditions to produce a polyester including 2,5-furandicarboxylate units, where the suppressant includes amines and lithium hydroxide.

The present invention relates to a polyester container. The polyester container is formed from a polyester resin containing a particular content of diol moieties derived from isosorbide and diethylene glycol, and thus can show high transparency in spite of a great wall thickness thereof.

A polyester single layer film according to an embodiment of the present invention has low haze and low oligomer characteristics, has a more bluish color coordinate, and has a low inorganic metal content. Accordingly, the polyester single layer film may be used as a base film of a heat-resistant protective film and a light-scattering preventive film, as well as an ITO and non-ITO base film (for Ag nanowire, or the like) used in recent touch panels. In addition, since the transmittance at a wavelength of 550 nm is relatively high due to less impurity, the polyester single layer film may be used as a base film of a prism for a backlight unit (BLU) and a diffusion sheet.