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High refractive (META)acrylate and the method for preparing the same

A technology of methacrylic acid and acrylate, applied in the field of high-refractive-index acrylate derivatives and their preparation, can solve the problems of processing, decrease in price competition rate, influence on display color, etc., and achieve excellent formability and adhesion, flow Good properties, moldability, and excellent reactivity

Inactive Publication Date: 2015-07-08
DAELIM CHEM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although halogen compounds such as bromine or chlorine can increase the refractive index, the yellowing of the film after curing is serious.
[0004] That is, the currently developed high-refractive-index acrylate is highly toxic due to containing halogen compounds, and there is a problem that a large amount of corrosive gas is generated when burned. Usually, the viscosity of the product is very high or solid, so when preparing the coating liquid Maintains a high viscosity state at the same time, causing processability problems, and has disadvantages such as a decrease in price competitiveness due to the use of expensive raw materials

Method used

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  • High refractive (META)acrylate and the method for preparing the same
  • High refractive (META)acrylate and the method for preparing the same
  • High refractive (META)acrylate and the method for preparing the same

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preparation example Construction

[0046] And, the present invention provides a kind of preparation method of high refractive index (meth)acrylate derivative, comprises the following steps:

[0047] 1) fluorene derivatives, PFA (paraformaldehyde) and acid of the following chemical formula a are dropped into the first reactor, and they are reacted to prepare compounds of the chemical formula b; 2) KOH aqueous solution and the following The methacrylic acid of chemical formula c is then dropped into TBAB (Tetra-n-butylammonium bromide) to prepare KOH / methacrylic acid aqueous solution; 3) the reaction product of the step 1) is put into 2) In the second reactor of step, make it carry out esterification reaction, prepare the (meth)acrylate derivative of following chemical formula 1:

[0048] [chemical formula 1]

[0049]

[0050] [chemical formula a]

[0051]

[0052] [chemical formula b]

[0053]

[0054] [chemical formula c]

[0055]

[0056] Wherein X is O or S, R is cyano or methyl.

[0057] The...

Embodiment 1

[0068] Synthesis of Dibenzo[b,d]furanylmethyl acrylate

[0069]

[0070] Add dibenzofuran (100.0g, 0.595mol), PFA (paraformaldehyde) (44.6g, 1.486mol), distilled water (50g) and acetic acid (100.0g) into a 1L reactor, stir and heat up to 80°C . The internal temperature of the reactor was maintained at 80° C., HCl gas (54.2 g, 1.486 mol) was added, and reacted for 5 hours. After completion of the reaction, toluene (300.0 g) was thrown in, and chloromethyl-containing dibenzofuran was separated as an intermediate product by layer separation. Stir the intermediate product layer, and cool the internal temperature of the reactor to 25° C., wash with water three times and separate the layers with distilled water (200.0 g) each time, and utilize activated carbon to decolorize the intermediate product layer in order to improve the color of the final target compound. After decolorization, MgSO 4 Water was removed and filtered, and a polymerization inhibitor MEHQ (4-Methoxy Phenol)...

Embodiment 2

[0076] Synthesis of Dibenzo[b,d]thiophenylmethyl acrylate

[0077]

[0078] Add dibenzothiophene (100.0 g, 0.543 mol), PFA (paraformaldehyde) (40.7 g, 1.357 mol), distilled water (50 g) and acetic acid (100.0 g) into a 1 L reactor, stir, and heat up to 90 ° C . The internal temperature of the reactor was maintained to 90° C., HCl gas (49.5 g, 1.356 mol) was added and reacted for 5 hours. After the reaction was completed, toluene (300.0 g) was dropped in, and dibenzothiophene containing chloromethyl was separated as an intermediate product through layer separation. The intermediate product layer was stirred, and the internal temperature of the reactor was cooled to 25° C., each time with distilled water (200.0 g), through 3 times of water washing and layer separation, to improve the color of the final target compound, the intermediate product layer was decolorized by activated carbon. After decolorization, MgSO 4 Water was removed and filtered, and a polymerization inhibi...

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Abstract

Provided are a high refractive (meta) acrylate derivative and a method for preparing the same, and more particularly, a novel high refractive (meta) acrylate derivative having a high refractive index, capable of being used in a display component material such as an optical film, and a method for preparing the same.

Description

technical field [0001] The present invention relates to a kind of high refractive index (meth)acrylic acid ester derivative and preparation method thereof, more specifically relates to a kind of novel (meth)acrylic acid ester derivative that can be used in the material of display parts such as optical film and has high refractive index (meth) ) acrylate derivatives and preparation methods thereof. Background technique [0002] (Meth)acrylates with high refractive index can be used in optical products, namely optical lenses, optical films and optical media. In particular, optical films can be used in display products such as liquid crystal displays or plasma display panels, among which optical films such as liquid crystal display prism sheets (LCD Prism sheets) are used to improve the Brightness of the Back-Light Unit. [0003] As an important optical parameter of the material constituting the prism layer of the prism film in the optical film, the refractive index can be li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/91C07D333/76G02B5/04
CPCC07D333/76C07D307/91G02B1/041C08L33/10G02B5/04
Inventor 辛泓炫韩双洙孔春昊金冏显
Owner DAELIM CHEM CO LTD
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