Modifier for resin, and resin composition using same

Abstract

Provided are: a modifier for a resin, which can provide the resin with superior bleed resistance, moisture resistance, dimensional stability, and optical properties; and a resin composition using themodifier. This modifier for a resin contains a diester compound represented by general formula (1) (in general formula (1), G1 represents a diol residue having 2-9 carbon atoms), and oligoester compounds represented by general formula (2) (in general formula (2), G2 and G3 each independently represent a diol residue having 2-8 carbon atoms, A represents an aromatic diprotic acid residue or an aliphatic diprotic acid residue having 4-10 carbon atoms, R represents an aromatic monocarboxylic acid residue, and n represents an integer of 1 or more), wherein the contained amount of the diester compound is not less than 15 mass% with respect to the total contained amount of the diester compound and the oligoester compounds, and the contained amount of an oligoester compound in which n=1 is not less than 15 mass% with respect to the total contained amount of the oligoester compounds.

Description

technical field [0001] The present invention relates to a modifier for resin (hereinafter also simply referred to as "modifier") and a resin composition using the same. Modifiers for resins with properties and optical properties and resin compositions using them. Background technique [0002] In recent years, resin films such as cellulose acylate, polycarbonate, polyacrylate, and polyolefin have been mainly used in polarizer protective films and optical compensation films for liquid crystal display devices. Among them, cellulose acylate films are widely used because they have excellent adhesion to polyvinyl alcohol used in polarizing plates, have high transparency, and have moderate strength. [0003] However, the cellulose acylate film has high moisture permeability, and thus has disadvantages such as detachment from the polarizing plate due to permeation of external moisture, and deterioration of the polarizing plate itself. In addition, under high temperature and high h...

AI Technical Summary

Problems solved by technology

[0003] However, the moisture permeability of cellulose acylate film is high, so there are disadvantages such as peeling off from the polarizing plate due to the penetration of external moisture, and deteriorating the polarizing plate itself.

In addition, under high temperature and high humidity, there are problems of shrinkage of polarizer protective film and optical compensation film (dimensional stability) and changes in phase difference related to visibility (optical characteristics) due to moisture absorption.

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