Polyester composition for production of thermally cured film

Abstract

To provide a material which can be formed into a cured film having high solvent resistance, liquid crystal-aligning properties, heat resistance, high transparency and high planarization, and which can be dissolved in a glycol-type solvent and a lactic acid ester-type solvent (which are solvents applicable in the production line for a planarized film of a color filter) in the formation of a cured film from the material. Disclosed is a polyester composition for the production of a thermally cured film, which comprises the following components (A) and (B): (A) a polyester having a constituent unit represented by the formula (1); and (B) an epoxy compound having two or more epoxy groups. (1) wherein A and B independently represent an organic group containing a ring structure.

Description

technical field The present invention relates to a thermosetting film-forming polyester composition and a cured film obtained from the thermosetting film-forming polyester composition. More specifically, the present invention relates to a polyester composition for forming a thermosetting film having high transparency, planarization, liquid crystal orientation ability, and high solvent resistance, the cured film, and uses of the cured film. This polyester composition for thermosetting film formation is especially suitable for the color filter overcoating agent which has the function of the liquid crystal alignment in a liquid crystal display. Background technique Generally, in optical devices such as liquid crystal display elements, organic EL (electroluminescence) elements, and solid-state imaging elements, a protective film is provided on the surface of the element to prevent exposure to solvents or heat during the manufacturing process. The protective film not only has hi...

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