Abstract: The present disclosure relates to a process for dyeing a hydrolysis-resistant polyester film. The process comprises dyeing of a hydrolysis resistant polyester film in a dye bath comprising at least one coloring agent (dye), at least one polyhydric alcohol, and optionally at least one UV absorber to obtain a dyed film. The dyed film is subjected to quenching followed by cleaning and drying to obtain a dyed hydrolysis-resistant polyester film. The process of the present disclosure is simple, economical, improve hydrolysis resistance, and also retains the mechanical properties of the film when exposed to harsh environmental conditions.

Abstract: The present disclosure relates to a process for dyeing a hydrolysis-resistant polyester film. The process comprises dyeing of a hydrolysis resistant polyester film in a dye bath comprising at least one coloring agent (dye), at least one polyhydric alcohol, and optionally at least one UV absorber to obtain a dyed film. The dyed film is subjected to quenching followed by cleaning and drying to obtain a dyed hydrolysis-resistant polyester film. The process of the present disclosure is simple, economical, improve hydrolysis resistance, and also retains the mechanical properties of the film when exposed to harsh environmental conditions.

Abstract: The present disclosure relates to an adhesive backed hydrolysis-resistant window film. The window film comprises at least one hydrolysis resistant polyethylene terephthalate (PET) first substrate layer having a first operative surface and a second operative surface, a NIR absorbing scratch resistant coat having near-infrared absorbing nano-particles disposed on the first operative surface, optionally at least one hydrolysis resistant polyethylene terephthalate (PET) second substrate layer having a third operative surface and a fourth operative surface, a first adhesive layer disposed on the second operative surface and optionally on the fourth operative surface, optionally a second adhesive layer containing infrared absorbing nano-particles disposed between the second operative surface and the third operative surface, at least one release liner disposed on the first adhesive layer.