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Additive for cellulose ester resin, cellulose ester resin composition using same, and film

A technology of cellulose ester resin and composition, applied in the field of additives for cellulose ester resin, to achieve the effect of excellent optical properties

Active Publication Date: 2013-06-12
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If an optical compensation film made of a cellulose ester resin having an excellent phase difference compensation function can be obtained, the number of the above-mentioned films usually required to be four can be further reduced, and the realization of thinning of the above-mentioned film becomes possible, and it is possible to provide cheap and High-grade polarizing plates, and further liquid crystal display devices, but the current situation is that such materials do not exist yet

Method used

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  • Additive for cellulose ester resin, cellulose ester resin composition using same, and film
  • Additive for cellulose ester resin, cellulose ester resin composition using same, and film
  • Additive for cellulose ester resin, cellulose ester resin composition using same, and film

Examples

Experimental program
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Effect test

Embodiment 1

[0109] The manufacture of embodiment 1 ester compound (A-1)

[0110] Add 392 g of 1,2-propanediol (hereinafter referred to as "PG") and dimethyl terephthalate (hereinafter referred to as "DMT") to a four-necked flask with an internal volume of 3 liters equipped with a thermometer, a stirrer and a reflux cooler. ”)800g and heat up. When the temperature in the flask reached 130°C, tetraisopropyl titanate as an esterification catalyst was added at 60 ppm relative to the total amount of PG and DMT, and the generated methanol was distilled off at 185°C while stirring under a nitrogen stream, and the reaction 15 hours. After the reaction, when the temperature in the flask reached 190° C., the pressure was reduced at about 4000 Pa for 2 hours to obtain an ester compound (A-1) (acid value: 0.43, hydroxyl Value: 86).

Embodiment 2

[0111] The manufacture of embodiment 2 ester compound (A-2)

[0112] 940 g of PG and 1,600 g of DMT were put into a four-necked flask with an internal volume of 3 liters equipped with a thermometer, a stirrer, and a reflux cooler, and the temperature was raised. When the temperature in the flask reached 130°C, tetraisopropyl titanate as an esterification catalyst was added at 60 ppm relative to the total amount of PG and DMT, and the generated methanol was distilled off at 185°C while stirring under a nitrogen stream, and the reaction 10 hours. After the reaction, when the temperature in the flask reached 190°C, the pressure was reduced at about 4,000 Pa for 2 hours, and further at about 133 Pa for 1 hour to obtain an ester compound (A- 2) (acid value: 0.18, hydroxyl value: 61).

Embodiment 3

[0113] The manufacture of embodiment 3 ester compound (A-3)

[0114] 1,500 g of the ester compound (A-2) obtained in Example 2 was charged into a four-necked flask with an internal volume of 2 liters, and the temperature was raised. When the temperature in the flask reached 190°C, the pressure was reduced at about 133 Pa for 1.5 hours to obtain an ester compound (A-3) with a number average molecular weight of 2,200 and a weight average molecular weight of 5,000 (acid value: 0.30, hydroxyl value: 25) .

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Abstract

This invention provides an additive for cellulose ester resin, consisting of an ester compound (A), in which the ester compound (A) has a number average molecular weight in the range from 300 to 3,000 and is obtained from the esterification reaction of a diol (a1) and an aromatic dicarboxylic acid compound (a2). The aforementioned aromatic dicarboxylic acid (a2) is one or more selected from the group consisting of terephthalic acid, terephthalic acid dialkyl ester, naphthalic acid, naphthalic acid dialkyl ester, biphenyldicarboxylic acid and biphenyldicarboxylic acid dialkyl ester. The additive for cellulose ester resin, by means of being added to an optical film formed of cellulose ester resin, may give the optical film excellent optical performance and moisture resistance and provide the optical film with excellent permeability resistance under high temperature and high humidity.

Description

technical field [0001] The present invention relates to an additive for cellulose ester resin capable of imparting polarizer protective film by adding it to cellulose ester resin, a cellulose ester resin composition using the same, and an optical film. Ester compound composition that imparts excellent optical properties to optical films. Background technique [0002] In recent years, information equipment such as notebook computers and televisions equipped with liquid crystal display devices that can clearly display images and characters have been supplied to the market. Regarding consumer demands for these information devices, in addition to providing high functionality, in addition to meeting the needs of space saving and diversification of living environments, they are also seeking thinner and lighter, and wide-ranging products with larger screens. Perspective and high contrast etc. [0003] Thinning of information equipment is achieved by reducing the depth (width) of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/12C08G63/181C08L1/12C08L1/14C08L1/18C08L67/02G02B5/30G02F1/1335
CPCC08B3/00C08J5/18C08K5/12C08L1/10G02B1/00
Inventor 三原崇吉村洋志桝本雅也铃木治
Owner DIC CORP
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