Hydroxyl acrylic resin and preparation method thereof

A hydroxy acrylic resin technology, applied in the field of hydroxy acrylic resin and its preparation, can solve the problems of low viscosity, fast surface drying speed and high hardness of hydroxy acrylic resin

Inactive Publication Date: 2014-12-24
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to provide a kind of hydroxyacrylic resin and its preparation method, to solve the defect that hydroxyac

Method used

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  • Hydroxyl acrylic resin and preparation method thereof

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preparation example Construction

[0036] In another typical embodiment of the present invention, a method for preparing the above-mentioned hydroxy acrylic resin is also provided. The preparation method includes: step S1, mixing hard monomers, soft monomers, hydroxyl monomers, carboxyl monomers, The initiator and the chain transfer agent are reacted in an organic solvent at 100-120° C. to form a reaction system; step S2, cooling the reaction system below 100° C. and then filtering to obtain a hydroxyacrylic resin.

[0037] The raw materials with the above ratio are used to react under the above conditions, and the various parameters and properties of the obtained hydroxyacrylic resin can meet the requirements of the diffusion film; the above preparation method is simple in process and can be widely popularized and applied on the basis of the existing technology.

[0038] Each step of the above-mentioned preparation method can be implemented with reference to the prior art. Preferably, the above-mentioned step S...

Embodiment 1

[0043] First, add 50 parts of toluene and 25 parts of butyl acetate to the reaction kettle in parts by weight, raise the temperature to about 115°C, and reflux the solvent; then, maintain the temperature of the above solvent at about 115°C, and dissolve 50 parts of methyl acetate within 3 hours A mixture of methyl acrylate, 23 parts of styrene, 17 parts of butyl acrylate, 16 parts of hydroxyethyl methacrylate, 1 part of acrylic acid, 2.5 parts of tert-butyl peroxybenzoate, and 2 parts of n-dodecyl mercaptan Add it dropwise to the reaction kettle to form the first system; after making the first system keep warm for 2 hours, add a mixture of 0.5 parts of tert-butyl peroxybenzoate, 10 parts of toluene and 5 parts of butyl acetate dropwise to the In the reaction kettle, and continue to keep warm for 2 hours to obtain a reaction system, the temperature of the reaction system is lowered to below 70°C, discharged and filtered to obtain the hydroxyacrylic resin of Example 1.

Embodiment 2

[0045] Add 70 parts of butyl acetate to the reaction kettle in parts by weight, raise the temperature to about 128°C, and reflux the solvent; then, maintain the temperature of the above solvent at about 128°C, add 46 parts of methyl methacrylate, A mixture of styrene, 12 parts of butyl acrylate, 14 parts of hydroxyethyl methacrylate, 0.8 parts of acrylic acid, 2.4 parts of dicumyl peroxide, and 2 parts of n-dodecyl mercaptan was added dropwise to the reactor at a constant rate The first system is formed; after the first system is incubated and reacted for 2 hours, a mixture of 0.4 parts of tert-butyl peroxybenzoate and 10 parts of butyl acetate is added dropwise to the reactor within 1 hour, and the reaction is continued for 2 hours to obtain For the reaction body, the temperature of the reaction system was lowered to below 70° C., and the material was discharged and filtered to obtain the hydroxyacrylic resin of Example 2.

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Abstract

The invention provides hydroxyl acrylic resin and a preparation method thereof. The hydroxyl acrylic resin is prepared by performing a reaction on the following raw materials in parts by weight: 60 to 90 parts of hard monomers, 10 to 30 parts of soft monomers, 5 to 20 parts of hydroxyl monomers, 0.5 to 5 parts of carboxyl monomers, 1 to 5 parts of initiators, and 1 to 5 parts of chain transfer agents. The dosages of the hard monomers are more, so that the hardness of the prepared hydroxyl acrylic resin is strengthened; the dosages of the soft monomers are proper, so that the proper toughness of the hydroxyl acrylic resin can be maintained. Compared with the prior art, the dosages of the hydroxyl monomers are reduced to some extent, so that the surface drying speed of the hydroxyl acrylic resin is further increased, and the hydroxyl acrylic resin has a higher glass-transition temperature. At the same time, the content of the hydroxyl is moderate, so that the hydroxyl acrylic resin can maintain excellent crosslink density and solvent resistance; moreover, the chain transfer agents are utilized to control the molecular weight of the hydroxyl acrylic resin, so that the hydroxyl acrylic resin is not only relatively higher in solid contents, but also lower in viscosity.

Description

technical field [0001] The invention relates to the field of resin synthesis, in particular to a hydroxyacrylic resin and a preparation method thereof. Background technique [0002] At present, the backlight module is widely used in liquid crystal displays. Generally speaking, the backlight module is composed of a light source, a light guide plate, and an optical film. The optical film includes a diffusion film, a reflective film, and a brightness enhancement film. Wherein, the diffusion film is generally between the light guide plate and the brightness enhancement film, and is used for diffusing the light emitted from the light guide plate and reusing part of the light reflected by the brightness enhancement film. Commonly used diffusion films are composed of substrates, diffusion particles, adhesives, and hardeners. The adhesives and hardeners undergo a cross-linking reaction, and the diffusion particles are attached to the substrate with high light transmittance, and the ...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F212/08C08F220/18C08F220/28C08F220/06C08F2/00
Inventor 孙甲刘永强张立虎丁清华
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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