Preparation of pigment particle agglutination dispersion, resin composition and color filter

An agglomerate and color filter technology, applied in the treatment of dyed high molecular organic compounds, dyed low molecular organic compounds, nanotechnology for materials and surface science, etc., can solve difficult dispersion, complicated operation, low viscosity, etc. problem, to achieve the effect of high contrast, excellent dispersion, and high color purity

Inactive Publication Date: 2008-11-12
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is such a disadvantage that even if the nanoparticles can be dispersed under high concentration conditions, a large amount of dispersing aid must be used, so when the viscosity is low such as inkjet ink, and the content rate of the polymer compound is extremely low In the case of , these techniques are difficult to directly apply
But, when adopting this method, there is such problem: because in this method, water-based particle will go through such form that agglomerates strongly at once, so the efficiency that pigment is surrounded by resin deteriorates, and it is difficult to redisperse (for example, See Patent Documents 7 to 8, etc.)
In addition, when using such

Method used

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  • Preparation of pigment particle agglutination dispersion, resin composition and color filter
  • Preparation of pigment particle agglutination dispersion, resin composition and color filter
  • Preparation of pigment particle agglutination dispersion, resin composition and color filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0473] [Preparation of aqueous dispersion of organic nano-pigment particles]

[0474] C.I. Pigment Red 254 (45 parts by mass) and polyvinylpyrrolidone (K-25, manufactured by Wako Pure Chemical Industries, Ltd., 90 parts by mass) were added to dimethyl sulfoxide (DMSO) (953 parts by mass), and stirred . A 28% by mass methanol solution (30 parts by volume) of sodium methoxide was added to this solution to prepare a pigment solution A. Separately, water (4000 parts by mass) was prepared as a pigment insoluble solvent B.

[0475] While stirring the insoluble solvent B of the above-mentioned pigment at 30° C. with a GK-0222-10 type ramond stirrer (trade name) manufactured by Fujisawa Pharmaceutical Industry Co., Ltd. at a speed of 500 rpm, the NP- KX-500 large-capacity non-pulsating pump (trade name) injects the above-mentioned pigment solution A into the insoluble solvent B of the pigment at a flow rate of 100ml / min, and the injection time is 4 minutes and 4 seconds, so that the...

Embodiment 2

[0497] The same operation as in Example 1 was carried out, except that the nonionic low molecular weight compound in Example 1 was replaced with nonionic 2-propyl valerate. The obtained organic nanoparticle non-aqueous dispersion liquid was referred to as pigment dispersion composition B. The same evaluation test as in Example 1 was performed on the pigment dispersion composition B, and the results are shown in Table 1.

Embodiment 3

[0499] The same operation as in Example 1 was carried out, except that the non-ionic polymer compound in Example 1 was replaced with non-ionic C-10. The obtained organic nanoparticle non-aqueous dispersion liquid was referred to as pigment dispersion composition C. The same evaluation test as in Example 1 was performed on the pigment dispersion composition C, and the results are shown in Table 1.

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PUM

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Abstract

The invention provides a method of producing easily filtered agglutinin; wherein, for the procedure of producing temporary aqueous paste adopting purging operation as the represent when the organic nanoparticle aqueous dispersant is phase changed to form organic nanoparticle non-aqueous dispersant (that is: the procedure of adopting filter to need waste a lot of time), the invention converts the nanoparticle in the organic nanoparticle aqueous dispersant into easily filtered agglutinin. The invention provides a method of producing organic nanometer dye particle agglutinin; wherein the organic nanometer dye particle dispersed in the aqueous medium acts with at least an organic low molecular compound with molecular weight less than 1000 and at least an organic high molecular compound with weight average molar mass more than 1000 to agglutinate the organic nanometer dye particle and then separate.

Description

technical field [0001] The invention relates to a preparation method for phase-transferring an aqueous dispersion of organic nano-pigment particles into a non-aqueous medium to obtain a non-aqueous dispersion of organic nano-pigment particles. More specifically, the present invention relates to a method of converting organic nanopigment particles in an aqueous dispersion of organic nanopigment particles, which has been difficult to filter, into easily filterable aggregates, and separating the aggregates through a filtration operation , and redisperse it in a non-aqueous medium to obtain a non-aqueous dispersion of organic nano-pigment particles. Background technique [0002] In recent years, studies on particle size reduction have been underway. In particular, the purpose of research is to reduce the particle size to a nanometer size (for example, in the range of 10 nm to 100 nm), which is difficult to produce by pulverization, precipitation, and the like. In addition, the...

Claims

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Application Information

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IPC IPC(8): C09B67/02C09B67/54G03F7/004G02B5/20
CPCB82Y30/00C01P2004/60C09B67/006C09C3/08C09C3/10
Inventor 大元诚
Owner FUJIFILM CORP
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