Polyamic acid composition, and liquid crystal aligning agent and aligning film prepared from the same

A technology of liquid crystal alignment agent and polyamic acid, which is applied in the direction of liquid crystal materials, chemical instruments and methods, instruments, etc., can solve problems such as multiple non-uniform regions, influence of liquid crystal material orientation properties, and increased current loss, and achieve simple preparation process, Suitable for mass production, increasing the effect of orientation properties

Inactive Publication Date: 2007-12-12
DAILY POLYMER CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the miniaturization of various products, the current consumption of the overall device must be reduced as much as possible. In addition, ordinary liquid crystal materials containing cyano groups may absorb moisture, resulting in an increase in current consumption and a decrease in the voltage retention ratio of the liquid crystal display device. As a result, the reliability of the properties of the overall device is reduced, so the current trend of liquid crystal m

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  • Polyamic acid composition, and liquid crystal aligning agent and aligning film prepared from the same
  • Polyamic acid composition, and liquid crystal aligning agent and aligning film prepared from the same
  • Polyamic acid composition, and liquid crystal aligning agent and aligning film prepared from the same

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Embodiment

[0044] The present invention will be further described with reference to the following examples, but it should be understood that the examples are for illustrative purposes only and should not be construed as limitations on the practice of the present invention.

[0045] [Chemicals] The following examples and comparative examples will be prepared using the following chemicals:

[0046] 1. Diamine reactants:

[0047] (1) Fluorinated diamine components:

[0048] 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (HFBAPP, manufactured by WAKAYAMA SEIKA KOGYO, Japan).

[0049] (2) Non-fluorinated aromatic diamine components:

[0050] 4,4'-bis(4-aminophenoxy)biphenyl (BAPB, manufactured by Japan WAKAYAMA SEIKA KOGYO company) and the diamine shown in the above formula (II) (by molar ratio of 1:1 3,5-dinitrobenzoyl chloride and cholesterol were dissolved in toluene, then 1 mole of pyridine was added, and then reacted at 25°C for 10 hours, and purified to obtain dinitro compounds, ...

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Abstract

The invention relates to polyamic acid compound, which is produced with diamine reactant and dianhydride reactant. Said diamine reactant comprises at least one fluorine containing diamine of trifluoromethyl substituent on main chain with molar content being 20- 70%, and non- fluorine containing diamine with molar content being 30- 80%. Said dianhydride reactant comprises aromatic tetracarboxylic acid dianhydride with molar content being 65- 100%, and aliphatic tetracarboxylic acid dianhydride with its molar content being 0- 35%. The invention also provides liquid crystal orientation agent and orientation memebrane produced with said polyamic acid compound.

Description

technical field [0001] The invention relates to a polyamic acid composition, in particular to a polyamic acid composition prepared by using a diamine reactant having a fluorine-containing diamine component, and a liquid crystal using the polyamic acid composition Alignment agent and alignment film. Background technique [0002] With the vigorous development of the personal information product market, coupled with the advantages of liquid crystal display devices such as thinness and low power consumption, most of the industry is currently developing various miniaturized portable information products with liquid crystal display devices. The liquid crystal layer in the liquid crystal display device uses an external electric field to change its alignment state, and changes the light passing through the liquid crystal layer. Various liquid crystal display devices can be manufactured by utilizing the difference in the alignment state of the liquid crystal layer. Currently commerc...

Claims

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Application Information

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IPC IPC(8): C08L79/08C09K19/38G02F1/1337
Inventor 陈雅萍颜传特黄志雄黄昭敬高进旺
Owner DAILY POLYMER CORP
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