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Negative C-type compensation film and method of preparing the same

A technology for compensating films and carbon atoms, applied in chemical instruments and methods, other household appliances, electronic equipment, etc., can solve the problems of high orientation and reduced thickness of difficult polymers

Active Publication Date: 2008-09-03
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of stretching is that the thickness of the film is reduced and it is difficult to orient the polymer to a high degree, therefore, there is a limitation in securing the required retardation

Method used

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  • Negative C-type compensation film and method of preparing the same
  • Negative C-type compensation film and method of preparing the same
  • Negative C-type compensation film and method of preparing the same

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Experimental program
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Embodiment

[0062] The present invention can be better understood from the following synthetic examples and examples which are given for illustration, but these examples should not be construed as limiting the invention.

[0063] Synthesis Example 1: Synthesis of Polyarylate Containing 3 mol% Allyl Bisphenol Derivatives in Dihydroxy Bisphenol Monomer

[0064] In a reactor equipped with a stirrer, 37.0 g of 2,2-bis(4-hydroxyphenyl)propane, 3.1 g of 2,2-bis(3-(2- Pronyl)-4-hydroxyphenyl)propane, 15.2 g of NaOH and 364 g of distilled water were mixed and dissolved by stirring. Then, while keeping the reactor temperature at 20°C, a solution of 1.2 g of benzyltriethylammonium bromide in 36.4 g of methylene chloride was added, followed by vigorous stirring. Next, a solution of 0.4 g of 4-tert-butylphenol and 0.1 g of NaOH dissolved in 3 g of water was added as a molecular weight modifier to prepare a mixed aqueous solution.

[0065] At the same time, 17.4 g of an aromatic carboxylic acid mixt...

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Abstract

Disclosed are a negative C-type compensation film and a method of preparing the same. The negative C-type compensation film includes a) a base layer, and b) a polymer layer comprising polyarylate prepared by a method comprising the step of copolymerizing divalent phenols, divalent aromatic carboxylic acid halides, and allyl bisphenol derivatives, the base layer and the polymer layer being sequentially layered. The compensation film is capable of being used for the negative C-type compensation film without a stretching process, significantly reduces the thickness of the compensation film, and has significantly improved interlayer adhesion force in a multilayer structure.

Description

technical field [0001] The invention relates to a negative C-type compensation film and a preparation method thereof. More specifically, the present invention relates to a negative C-type compensation film that can be applied without stretching treatment, and when the film has a multilayer structure, its thickness is significantly reduced and interlayer adhesion is significantly improved ; And the present invention relates to the preparation method of said negative C-type compensation film. [0002] This application claims priority on the filing date of Korean Patent Application No. 10-2005-0085219 filed with the Korean Intellectual Property Office on September 13, 2005, the disclosure of which is incorporated herein by reference in its entirety. Background technique [0003] Polyarylate is generally an aromatic compound consisting of bisphenol A (which is an aromatic alcohol), terephthalate and isophthalate (which are aromatic acid halides). polyester. Conventional polya...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18
CPCB32B17/06B32B27/30B32B27/08G02F1/133634B32B27/32B32B27/36C09K2323/03C09K2323/035Y10T428/266Y10T428/31504Y10T428/31507Y10T428/31935Y10T428/31938Y10T428/31971B32B27/308B32B2307/418B32B2309/105B32B2457/202
Inventor 李晓宣金东烈金熹正南大祐柳相旭丁鹏郡车周垠李昊俊
Owner LG CHEM LTD