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Ester resin, antiplasticizer, cellulose ester resin composition, optical film and liquid crystal display device

A technology of cellulose ester resin and anti-plasticizer, which is applied in the field of liquid crystal display devices, can solve problems such as film strength and moisture permeability resistance, and achieve the effects of improving elastic modulus, suppressing moisture permeability, and excellent balance

Active Publication Date: 2022-05-31
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Usually, when additives are added to suppress moisture permeability, plasticization of the resin occurs at the same time, so it is difficult to balance the strength and moisture permeability resistance of the obtained film

Method used

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Examples

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Embodiment 2

Embodiment 3

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Abstract

Provides an ester resin that is excellent in balance of strength, moisture permeability resistance, and optical properties when processed into a film, and can be suitably used as an anti-plasticizer for optical resins, a resin composition containing it, and a resin combination using the ester resin The optical film obtained by using it, and the liquid crystal display device using it. Specifically, it is an ester resin, a cellulose ester resin composition containing the same, an optical film containing the composition, and a liquid crystal display device, wherein the ester resin is characterized in that B-(G-A) n -G-B [wherein, B is a monocarboxylic acid residue, G is an alkylene glycol residue, an oxyalkylene glycol residue or an aryl glycol residue, A is a dicarboxylic acid residue, More than 20 mol% of the total moles of A are isophthalic acid residues, n is the number of repetitions, G and A in each repetition are optionally the same or different, and multiple B and G present are optionally the same or different. 〕express.

Description

Ester resin, anti-plasticizer, cellulose ester resin composition, optical film and liquid crystal display display device technical field The present invention relates to ester resins suitable as anti-plasticizers for resins for optical materials, and cellulose esters containing the same A resin, an optical film obtained by using the resin composition, and a liquid crystal display device using the same. Background technique [0002] In recent years, liquid crystal displays have been gradually thinned, and the polarizing plate protective film has gradually thinned from the previous 80 μm to 60μm~25μm. From the viewpoint of easy bonding with polarizers, triacetyl fibers have been conventionally used as protective films for polarizers. Plain resin (hereinafter referred to as TAC). [0003] However, since TAC is hard and brittle, when it is formed into a film, there is a problem of insufficient strength and easy breakage. In addition, TAC's It has high moisture permeabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/78G02B5/30G02F1/1335C08L1/10C07C69/80C08K5/101
CPCC07C69/78C07C69/80C08K5/101C08L1/10G02B5/30G02F1/1335C08G63/16C08G63/181C08L67/02
Inventor 田尻裕辅尾崎知代
Owner DIC CORP