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Polyamide-imide film

A polyamide-imide film, polyamide-imide technology, applied in the directions of instruments, optics, nonlinear optics, etc., can solve the problem of reduced light transmittance and haze characteristics of polyimide film, reduced light transmittance, It is difficult to provide light transmittance polyimide film and other problems to achieve the effect of excellent optical properties and excellent yellow index

Pending Publication Date: 2022-01-07
SK INNOVATION CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when dyes and pigments are used, the yellowness index and light transmittance are in a conflicting relationship, so there is a problem that the light transmittance decreases when the yellowness index is improved.
[0007] Also, there is a problem that the light transmittance and haze characteristics of the polyimide film may decrease due to problems such as solubility and dispersibility of dyes and pigments
Therefore, it is difficult to provide a polyimide film excellent in light transmittance, yellowness index and haze

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] Dichloromethane and 2,2'-bis (trifluoromethyl) - biphenylemide (TFMB) were added to the reactor, and the mixture was sufficiently stirred under a nitrogen atmosphere, and then phenylene chloride (TPC) was added and stirred for 6 hours. At this time, the molar ratio of the added TPC: TFMB was set to 3: 4, and the solid content was adjusted to 10% by weight.

[0108] Thereafter, the reaction product was precipitated using excess of methanol, and filtered, thereby obtaining a solid, and the solid matter was dried in vacuo for 6 hours, thereby preparing a polyamide-based oligomer. The molecular weight of the polyamide-based oligomer prepared was 1670 g / molar.

[0109] Next, N, N-dimethylacetamide (DMAC), 100 moles prepared polyamide-based oligomers and 28.6 moles of TFMB were added to the reactor, and thoroughly stirred.

[0110] Thereafter, 64.3 mole of 4,4'-hexafluoropropyl dodiphenimic anhydride (6FDA) and 64.3 mole of biphenyl tetramethloride (BPDA) were sequentially adde...

Embodiment 2

[0118] In addition to the addition of cyclobutane tetramethloride (CBDA) instead of BPDA, the same method of Example 1 was carried out, thereby preparing a polyamide imide film having a thickness of 80 μm. The prepared polyamide imine film has a modulus of 5.4 GPa, and the elongation at break is 21.5%. Further, the result of the light transmittance of the preparative polyamide film is measured, and the light transmittance of 590 nm exhibits a value of 1.0% lower than the light transmittance of 540 nm and the light transmittance of 640 nm. And the light transmittance under 630 nm exhibits a value of 0.9% lower than the light transmittance of 680 nm.

[0119] For the prepared polyamide imine film, the light transmittance, yi, b *, haze and △ yi are measured according to the measurement method. 热 It is also described in Table 1.

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Abstract

The present invention relates to a polyamide-imide resin and a polyamide-imide film comprising a porphyrin-based dye. The polyamide-imide film according to the present invention has excellent optical properties and, in particular, can retain an excellent yellow index in repeatedly temperature-changing environments.

Description

Technical field [0001] The present invention relates to a polyamide an amine film comprising a dye. Background technique [0002] High heat-resistant polyimide resin refers to the preparation of a polyamine and an aromatic dianhydride to prepare a polyamic acid derivative to prepare a polyamic acid derivative by chemical solidification and / or thermoset. High heat resistant resins prepared by imidization. [0003] This polyimide resin has excellent properties in high heating and thermal oxidation resistance, radiation resistance, low temperature characteristics, chemical resistance, etc., for a wide range of fields, such as automotive materials, aviation materials. Heat-resistant tip material such as spacecraft material, and an electrode protective film such as an insulating coating agent, an insulating film, a semiconductor, and a TFT-LCD. [0004] In addition, the trend in recent years is the use of the polyimide resin in various fields such as a display material such as a liq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L79/08C08K5/42C08K5/3467
CPCC08J5/18C08J2379/08C08K5/42C08K5/3467C08G73/14C08L79/08G02F1/1333C08G73/1039C08G73/1067C08G73/1042C08G69/26C08G69/32C08G73/1075C08K5/0041C08G73/1007C08K5/3472
Inventor 朴相胤金惠璃金惠真田承慜丁知相
Owner SK INNOVATION CO LTD