This polyethylene furanoate has an intrinsic viscosity of 0.95 - 1.50 dl/g. Said intrinsic viscosity is measured (the Huggins constant is defined as 0.32) at 30° C. by using an Ubbelohde viscometer, after dissolving 0.25 g of the polyethylene furanoate in 50 ml of a solvent mixture of phenol/1,1,2,2-tetrachloroethane = 50/50 (weight ratio).

The instant invention provides a curable formulation suitable for laminating adhesive applications, and laminating adhesives made therefrom. The curable formulation suitable for laminating adhesive applications according to the present invention comprises a high molecular weight polyester resin, an epoxy-terminated polyester, an additive, a curing agent, and a solvent, wherein, upon curing under curing conditions, the curable formulation forms at least one interpenetrating polymer network.

The instant invention provides a curable formulation suitable for laminating adhesive applications, and laminating adhesives made therefrom. The curable formulation suitable for laminating adhesive applications according to the present invention comprises a high molecular weight polyester resin, an epoxy-terminated polyester, an additive, a curing agent, and a solvent, wherein, upon curing under curing conditions, the curable formulation forms at least one interpenetrating polymer network.

A pharmaceutical packaging composite film includes a heat sealing layer, an aluminum foil layer, and an impact resistant layer. The heat sealing layer contains residues derived from at least one of 1,4-butanediol, isophthalic acid, isoprene glycol, and isopropanol, and thus has a melting point between 130° C. and 180° C. The aluminum foil layer is disposed on the heat sealing layer. The impact resistant layer is disposed on the aluminum foil layer.

A pharmaceutical packaging composite film includes a heat sealing layer, an aluminum foil layer, and an impact resistant layer. The heat sealing layer contains residues derived from at least one of 1,4-butanediol, isophthalic acid, isoprene glycol, and isopropanol, and thus has a melting point between 130° C. and 180° C. The aluminum foil layer is disposed on the heat sealing layer. The impact resistant layer is disposed on the aluminum foil layer.

The present disclosure relates to a process for preparing polyester. The process for preparing the polyester essentially involves the preparation of the isosorbide oligomer and the isosorbide polymer from the isosorbide oligomer. The isosorbide oligomer or isosorbide polymer is then co-polymerized with the polyester. The copolymerization isosorbide oligomer or isosorbide polymer may be carried out at any stage of the preparation of the polyester. The polyester obtained in accordance with the process of the present disclosure can be used in packaging applications such as preparing packaging materials or containers. The material or container obtained from the polyester of the present disclosure is capable of withstanding a temperature of 60 to 90° C. without undergoing any deformation and shrinkage. Further, the material or container obtained from the polyester of the present disclosure is transparent or has lower color b* value.

Polymer composites are provided, and more particularly, polymer composites of ground date pits disposed in a polymer matrix. The composites can be formed by a process of preparing reinforced polymer composites having a fibril melt fracture surface, including blending a mixture of date pit particulate with a thermoplastic polymer; melting the mixture; and forcing the melt through a die to produce the polymer composite having a fibril containing surface.

Polymer composites are provided, and more particularly, polymer composites of ground date pits disposed in a polymer matrix. The composites can be formed by a process of preparing reinforced polymer composites having a fibril melt fracture surface, including blending a mixture of date pit particulate with a thermoplastic polymer; melting the mixture; and forcing the melt through a die to produce the polymer composite having a fibril containing surface.

The present invention provides a fiber sizing agent composition containing a polyester resin (A) and a reactive compound (B), wherein the polyester resin (A) is a polyester resin having an HLB of 4 to 18 and a viscosity at 30° C. of 10 to 1,000,000 Pa.Math.s, the reactive compound (B) is at least one reactive compound selected from the group consisting of blocked isocyanates, tertiary amines, tertiary amine salts, quaternary ammonium salts, quaternary phosphonium salts, and phosphine compounds, and the weight ratio of the polyester resin (A) to the reactive compound (B) [(A)/(B)] in the fiber sizing agent composition is 99.9/0.1 to 10/90.

Polyester compositions having desirable injection molding properties and that retain good crystallization rates and natural stretch ratio characteristics are described. These polyesters are suitable for the manufacture of beverage containers, bulk continuous filaments, and other articles that can benefit from such improved properties.