Radiation settability composition for adhesive, polarizing film and manufacturing method thereof

Abstract

Provided is a radiation settability composition for an adhesive with excellent coating character, capable of manufacturing a polarizing film with an excellent wetheat resistance and adhesive strength in a short time by a simple manufacturing procedure, a polarizing film manufactured by the composition, and a method for manufacturing the polarizing film. The composition includes (A) a compound having trimethylene oxide, (B) a epoxy compound having a aromatic ring structure, (C) at least one compound selected from (C1) aliphatic compound having an epoxyethane group and (C2) alicyclic ring type compound having a epoxyethane group, (D) a compound with a number average molecular weight more than 500 by polystyrol measured through gel infiltration color spectrum and having more than two of hydroxyl, (F) a compound with a degree of viscosity less than 10MPa / s at a temperature of 25 DEG C and having one hydroxyl, and (E) light acid-production agent. The polarizing film is formed by laminating protective layers through adhesive layers formed by a condensate of the above composition on two faces of a polyvinyl alcohol type polarizing membrane.

Description

technical field [0001] The present invention relates to a radiation curable composition for an adhesive, a polarizer formed using the radiation curable composition for an adhesive, and a method for producing a polarizer. Background technique [0002] In recent years, liquid crystal display devices have been widely used as display devices for displaying characters, images, and the like. Such a liquid crystal display device generally includes two polarizers, and a liquid crystal cell that is arranged between the two polarizers, a glass substrate, a transparent electrode, a color filter, an alignment film, liquid crystal, and the like. [0003] In general, the polarizing plate used in the liquid crystal display device is a polarizing film (polarizing film) formed by adsorbing iodine or a dichroic dye on a stretched polyvinyl alcohol (hereinafter also referred to as PVA)-based sheet. One or both surfaces of the device) are bonded with a protective film such as a triacetyl cellu...

AI Technical Summary

Problems solved by technology

[0006] However, since the moisture permeability of the TAC-based protective film is high, there is a problem that the heat and humidity resistance is poor.

That is, in a high-temperature, high-humidity environment such as when being mounted on a vehicle, deformation may occur, and there is a problem that it is difficult to maintain high polarization performance.

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