Preparation method of aqueous nano-pigment dispersion liquid

A nano-pigment and dispersion liquid technology, which is applied in the direction of pigment paste, organic dyes, and photosensitive materials used in optomechanical equipment, etc. It can solve the problems of high cross-linking density, soft and soft coating film, and difficulty in meeting the hardness requirements. , to achieve the effect of improving developing efficiency, excellent color characteristics, and overcoming environmental pollution

Active Publication Date: 2012-09-19
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In realizing the above-mentioned process of pigment dispersion method with oil phase solvent as the dispersion medium, the inventors have found that there are at least the following problems in the prior art: the method is due to the use of a large amount of solvents, resulting in environmentally unfriendly volatile organic compounds (Volatile Organic Compounds, The solvent is flammable and explosive, which is not conducive to safe production; the solvent-based color photoresist prepared by solvent-based pigment dispersion has the inherent shortcomings of solvent-based light-curing mate

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  • Preparation method of aqueous nano-pigment dispersion liquid

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Embodiment 1

[0030] The embodiment of the present invention provides a kind of preparation method of aqueous nano pigment dispersion liquid, as figure 1 As shown, the method includes:

[0031] 101. Distilling 2.5%-40% by weight of styrene to remove polymerization inhibitors, 2.5%-20% by weight of acrylate monomers, 0.25%-5% by weight of cross-linking monomers, 0.05% ~ 0.5% co-emulsifier and 0.05% ~ 0.5% oil-soluble initiator are mixed to form a mixture, 0.25% ~ 2.5% organic pigment to be dispersed is added to it, and an oil phase solution is formed after the organic pigment is completely dissolved.

[0032] In order to realize the dispersion of organic pigments in the water phase, the oil phase solution is dispersed into the water phase solution prepared in the following steps at a nanoscale to form small droplets with a particle size of less than 100nm. Soluble pigments. The acrylate monomer used is at least two of n-butyl acrylate, isooctyl acrylate, methyl acrylate, ethyl acrylate, me...

Embodiment 2

[0050] Embodiments of the present invention provide a method for preparing an aqueous nanopigment dispersion, the method comprising:

[0051] 30g of styrene, 10g of n-butyl acrylate, 5g of methyl methacrylate, 1.3g of 1,6-hexanediol diacrylate, 1.7g of tripropylene glycol diacrylate, 1g of cetyl alcohol, were removed by distillation of 30g of polymerization inhibitor. 0.5g of benzoyl peroxide was mixed to form a mixture, and then 1.8g of the organic pigment to be dispersed was dissolved in the above mixture, and an oil phase solution was formed after completely dissolving.

[0052] In order to realize the dispersion of organic pigments in the water phase, the oil phase solution is dispersed into the water phase solution prepared in the following steps to form small droplets with a particle size of less than 100nm at the nanoscale. The embodiments of the present invention use styrene and n-butyl acrylate Monomers and methyl methacrylate monomers dissolve pigments.

[0053] In ...

Embodiment 3

[0069] Embodiments of the present invention provide a method for preparing an aqueous nanopigment dispersion, the method comprising:

[0070] Distill 26g of styrene, 10g of methyl methacrylate, 5g of isooctyl acrylate, 1.5g of 1,6-hexanediol diacrylate, 1.5g of tripropylene glycol diacrylate, 0.8g of cetyl alcohol , 0.2g of hexadecane, 0.5g of azobisisobutyronitrile mixed to form a mixture, and then 1.6g of the organic pigment to be dispersed was dissolved in the above mixture, after complete dissolution to form an oil phase solution.

[0071] In order to realize the dispersion of organic pigments in the water phase, the oil phase solution is dispersed into the water phase solution prepared in the following steps to form small droplets with a particle size of less than 100nm at the nanoscale. The embodiments of the present invention use styrene and methyl methacrylate Ester monomers and isooctyl acrylate monomers dissolve pigments.

[0072] In the embodiment of the present in...

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Abstract

The embodiment of the invention discloses a preparation method of an aqueous nano-pigment dispersion liquid, which relates to the field of preparation of colored photoresists and is used for overcoming various defects of a solvent type pigment dispersion liquid and increasing the developing efficiency of a pigment. The method comprises the following steps of: mixing 2.5-40 percent by weight of distilled styrene for removing a polymerization inhibitor, 2.5-20 percent by weight of an acrylic ester monomer, 0.25-5 percent by weight of a crosslinking monomer, 0.05-0.5 percent by weight of an emulsifying assisting agent, 0.05-0.5 percent by weight of an oil-soluble initiator and 0.25-2.5 percent by weight of an organic pigment to be dispersed, and fully dissolving to form an oil phase solution; dissolving 0.05-2.0 percent by weight of an emulsifier and 0.05-2 percent by weight of a buffering agent into 40-90 percent by weight of deionized water to form a water phase solution; mixing the oily phase solution with the water phase solution, stirring, and ultrasonically homogenizing into a fine emulsion; and transferring the fine emulsion into a reactor, introducing nitrogen gas, heating, initiating polymerization, reacting for 10-40 minutes, adding 0.5-5 percent by weight of an alkali-soluble monomer, continually reacting for 1-5 hours, cooling to the room temperature, adjusting the pH to 8-10 with ammonia water, filtering, and discharging to obtain the aqueous nano-pigment dispersion liquid.

Description

technical field [0001] The invention relates to the field of preparation of color photoresist, in particular to a preparation method of aqueous nano pigment dispersion liquid. Background technique [0002] Color filters are an important part of liquid crystal displays, and liquid crystal displays rely on color filters to present color images. The principle of presenting images is: the white light from the backlight is irradiated to the color filter through the liquid crystal layer, and the red, green and blue pigment photoresist corresponding to each pixel is passed through the color filter to form red light, green light and The blue light is finally mixed in the human eye to form a color image. [0003] The manufacturing process of color filters includes: printing method, dyeing method, pigment dispersion method, electrodeposition method, dry film method and inkjet method of large-size panels. At present, the manufacturing process of pigment dispersion method is widely use...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/18C08F220/14C08F222/14C08F222/20C08F220/06C08F220/28C08F2/24C09B67/20C09D17/00G03F7/004
CPCC08F2/24C08F212/08C08F2/44G02B5/23C08F220/14C08F222/102C08F220/1804C08F220/1808C09B67/0084C08F20/10
Inventor 舒适杨久霞赵吉生李琳
Owner BOE TECH GRP CO LTD
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