Colored resin particle dispersion and inkjet ink
A technology of resin particles and dispersions, used in inks, applications, household appliances, etc., can solve the problems of low water resistance and marking resistance of dyes, low wear resistance and wiping resistance, etc., and achieve color rendering and wear resistance. The effect of excellent performance, water resistance and marking resistance
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[0184] The preparation method of the colored resin particle dispersion is roughly divided into a chemical method and a physicochemical method. Examples of the chemical method include an interfacial polycondensation method, an interfacial reaction method (in-situ polymerization method), an in-liquid curing coating method (Orifice method), and the like. Examples of the physicochemical method include an in-liquid drying method (in-water drying method, in-oil drying method), an aggregation method, a melting-dispersion-cooling method, and the like.
[0185] The colored resin particle dispersion of the present embodiment can be prepared, for example, by the above-mentioned physicochemical methods. In particular, the in-liquid drying method can be preferably used, and the in-oil drying method using an oil-in-oil emulsion can be particularly preferably used.
[0186] Using the oil-in-oil drying method of an oil-in-oil emulsion, the materials described above can be used to prepare colo...
Embodiment 1
[0483] In Example 12, a styrene-acrylic polymer was used as the solid resin. As a result, compared with Example 1, good results were obtained even without using a pigment dispersant, and especially the scratch resistance was further improved. The styrene acrylic polymer of the solid resin contains an aromatic ring, so it has a pigment affinity, and it is considered to function even as a pigment dispersant.
[0484] In Examples 14 to 19, the type of the basic dispersant was changed, and good results were obtained respectively.
[0485] In Examples 14 to 19, the use of amine-modified methacrylic acid block polymerization as the basic dispersant can further reduce the particle size of the colored resin particles, and further improve the viscosity.
Embodiment 17
[0486] In Example 17, even when an alkylphenol resin which is a non-nitrogen-containing resin was used, the particle diameter of the colored resin particles could be further reduced.
[0487] In addition, in Examples 13 to 16, 18, and 19, methoxymethylated nylon or nitrocellulose was used as the solid resin, and compared with Example 1, good results were obtained even without using a pigment dispersant. , especially the wiping resistance and viscosity can be further improved.
[0488] In each comparative example, no acidic compound was included, and good results could not be obtained.
[0489]
[0490] Hereinafter, the manufacturing method of the amine-modified methacrylic block polymer of the basic dispersants 2-4 used in Examples 14-19 is demonstrated.
[0491] (Process (1-1): 1st stage, production of methacrylic polymer (PA))
[0492] Table 10 also shows the formulation and physical properties of the methacrylic polymer used to prepare the alkaline dispersant.
[0493]...
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