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

A technology of cellulose ester resin and additives, applied in the directions of diffusing elements, polarizing elements, etc., can solve the problems of insufficient satisfaction and achieve the effect of high Rth value
CN101845154AActive Publication Date: 2010-09-29DIC CORP
3 Cites 11 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DIC CORP
Publication Date
2010-09-29

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides an additive for a cellulose ester resin, a cellulose ester resin composition using same, and an optical film formed of the resin composition. The additive for the cellulose ester resin contains an ester compound (A) which is an ester compound produced through an esterification reaction by a straight chain alkylene glycol (a-1), a branch chain alkylene glycol (a-2), a dicarboxylic acid such as terephthalic acid or an aromatic dicarboxylic acid compound (a-3) such as an alkyl ester of the terephthalic acid, and the aromatic monocarboxylic acid compound (a-4), wherein the molar ratio (a-1) / (a-2) of the straight chain alkylene glycol (a-1) to the branch chain alkylene glycol (a-2) is arranged between 85 / 15 and 15 / 85; and the number average molecular weight of the ester compound is arranged between 300 and 2000. The optical film has a high retardation value, the transparency and the moisture permeability resistance.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to an additive for cellulose ester resins containing an ester compound capable of imparting a high degree to an optical film such as a polarizer protective film by adding the ester compound to a cellulose ester resin, and a cellulose ester resin composition and an optical film using the same. delay value. Background technique

[0002] Cellulose ester resin films are used as photographic films because of their transparency, optical isotropy, and high toughness. In recent years, in addition to the above-mentioned properties, the demand for polarizing plates constituting liquid crystal display devices such as televisions and notebooks has rapidly increased due to good adhesion to polyvinyl alcohol (PVA).

[0003] Polarizing plates for liquid crystal display devices generally have a structure in which polarizer protective films are attached to both sides of a polarizer in which dichroic molecules are aligned on a PVA film, an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More