JPH1067963A - Water base fluorescent pigment composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a water base fluorescent pigment composition without thickening even stored at a high temperature and useful as a water-resistant poster color, etc., by containing an acrylic resin-based fluorescent pigment, an acrylic ester-based emulsion and water. SOLUTION: This composition contains (A) an acrylic resin-based fluorescent pigment, (B) an acrylic ester-based emulsion [e.g. an emulsion of a copolymer of an ester such as butyl methacrylate or a (meth)acrylate] and (C) water. As the component A, a composition obtained by mixing a pigment having strong fluorescence such as C.I. basic yellow 44 into a styrene-acrylonitrile-based copolymer is exemplified. Preferably, 10-40wt.% of the component A and 5-30wt.% of a solid fraction of the component B are mixed to the whole amount of the objective composition. A body pigment such as silicone oxide or an organic solvent such as sorbitol can be mixed in the composition, as necessary. A thickener such as carboxymethyl cellulose in an amount of 0.05-2wt.% based on the whole weight of the composition may be mixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aqueous fluorescent pigment composition suitably used for poster colors and watercolors having water resistance.

[0002]

2. Description of the Related Art An aqueous fluorescent pigment composition used as a water-resistant poster color, watercolor paint, or the like contains at least a fluorescent pigment, an acrylate-based emulsion, and water. The fluorescent pigment is used as a coloring material, and is mainly used by pulverizing a melamine / formaldehyde resin colored with a fluorescent dye. The acrylate-based emulsion is used as a fixing agent, and imparts water resistance to a trace of application.

[0003]

By the way, the aqueous pigment composition as described above thickens or hardens when it is stored at a high temperature, such as when it is stored in a warehouse in summer or the like. A problem arises in that it cannot be used as a device.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an aqueous fluorescent pigment composition which does not increase in viscosity even when stored at a high temperature, comprising an acrylic resin-based fluorescent pigment and an acrylate-based fluorescent pigment. The gist of the present invention is an aqueous fluorescent pigment composition containing at least an emulsion and water.

[0005] Acrylic resin-based fluorescent pigments are used as coloring materials. This pigment is a strong fluorescent dye, for example,
C. I. Basic Red 1: 1, C.I. I. Basic Yellow 44, C.I. I. Basic Violet 7, 11 and C.I. I. Basic Blue 45, C.I. I. Solvent Yellow 44, C.I. I. Fluorescent writing agent 184 and the like are mixed in an acrylic resin-based synthetic resin such as a styrene-acrylonitrile copolymer. Specifically, LUMIKOL NK
W-2101, NKW-2102, NKW-210
3, NKW-2104, NKW-2105, NK
W-2106, NKW-2107, NKW-210
8, NKW-2109, NKW-2117, NK
W-2127, NKW-2137, NKW-216
7, NKW-3002, NKW-3004, NK
W-3005, NKW-3007, NKW-300
8, NKW-3023, NKW-3077, NK
W-3604, NKW-3605, NKW-360
7, NKW-3608, NKW-3677 (or more,
Nippon Fluorescent Chemical Co., Ltd.), Shinroihi Color Base S
W-07, SW-12, SW-11, SW-1
4, SW-15, SW-16, SW-17, S
W-27, SW-28, SW-37, SW-47
(Above, manufactured by Shinloich Co., Ltd.), TI-GR6611,
TI-CL6600, TI-CH6610, TI-OY
6612, TI-OG6613, TI-OR6614,
TI-RD6615, TI-CE6616, TI-PK
6617, TI-MG6618, TI-BL6619,
TI-PR4191, TI-PR4717, TI-MG
6718, TI-CH6710, TI-CH6620,
TI-OR6714, TI-CE6716, TI-MG
6718 (all manufactured by Radiant, USA). These pigments can be used alone or as a mixture of two or more.
~ 40% by weight is preferred.

[0006] Acrylic ester-based emulsions impart water resistance to coating marks and are also used as a vehicle. For example, methyl methacrylate, methyl acrylate, ethyl acrylate, ethyl methacrylate, isopropyl acrylate, isopropyl methacrylate, butyl acrylate, an emulsion of an ester such as butyl methacrylate, or a combination of the acrylate or methacrylate And emulsions of copolymers. Specifically, Primal AC-19 and AC
-22, AC-33, AC-61, AC-64,
AC-73, AC-261, AC-388, A
C-417, AC-490, AC-507, AC
-996, and AC-2235 (above, manufactured by Rohm and Haas Co., USA). The used amount thereof is preferably 5 to 30% by weight in solid content based on the total amount of the aqueous fluorescent pigment composition.

[0007] In addition to the above components, if necessary, extenders such as calcium carbonate, barium sulfate and silicon oxide;
High-boiling organic solvents such as glycerin, ethylene glycol, propylene glycol, dipropylene glycol, and sorbitol can be used.Moreover, as a thickener, a water-soluble polymer such as carboxymethylcellulose, hydroxyethylcellulose, or hydroxypropylcellulose can be used. 0.05 to 2. based on the total amount of the fluorescent pigment composition.
0% by weight or additives such as a pH adjuster, an antiseptic / antifungal agent, a rust inhibitor, a defoaming / defoaming agent may be appropriately used.

The aqueous fluorescent pigment composition of the present invention can be easily obtained by a conventionally known method. For example,
The above components are mixed and dispersed by a disperser such as a three-roll mill, a horizontal ball mill, or a horizontal bead mill.

[0009]

The aqueous fluorescent pigment composition according to the present invention imparts water resistance and has the same structure as an acrylic ester-based emulsion, which is also used as a vehicle, and a synthetic resin of a fluorescent pigment. It is considered to be less reactive than a fluorescent pigment using a synthetic resin of another composition, and thus it is considered that there is less thickening and curing when stored at a high temperature.

[0010]

EXAMPLES Examples and comparative examples will be shown below, but the present invention is not limited to the following examples.

Example 1 Shinroihi Color Base SW-47 (manufactured by Shinroihi KK) 40 parts by weight Primal AC3444 (manufactured by Rohm and Haas) 20 parts by weight Hydroxymethylcellulose (thickener) 0.7 part by weight Ethylene glycol 5 parts by weight Part Tetrahydroparaoxazine (pH adjuster) 0.5 part by weight Water 33.5 parts by weight Silicon oxide 5 parts by weight After stirring the above components in a lab mixer for 15 minutes, the mixture was passed twice through a three-roll mill to give a purple color. An aqueous fluorescent pigment composition was obtained.

Example 2 LUMIKOL NKW-2105 (manufactured by Nippon Fluorescent Chemical Co., Ltd.) 50 parts by weight Primal AC-64 (manufactured by Rohm and Haas) 24 parts by weight Propylene glycol 5 parts by weight Tetrahydroparaoxazine (pH adjuster) 3 Parts by weight Water 15 parts by weight Hydroxypropylcellulose (thickener) 0.3 part by weight Silicon oxide 3 parts by weight The above-mentioned components are placed in a lab mixer, stirred for 15 minutes, and then passed twice through a three-roll mill to give a yellow aqueous solution. A fluorescent pigment composition was obtained.

Example 3 TI-BL6619 (manufactured by Radiant) 25 parts by weight Primal AC-22 (manufactured by Rohm and Haas) 30 parts by weight Glycerin 5 parts by weight Tetrahydroparaoxazine (pH adjuster) 1 part by weight Water 31. 5 parts by weight Carboxymethylcellulose (thickener) 0.5 parts by weight Silicon oxide 7 parts by weight After stirring the above components in a lab mixer for 15 minutes, the mixture was passed twice through a three-roll mill to give a blue aqueous fluorescent pigment composition. I got

Comparative Example 1 In Example 1, the Sinloich color base SW-4 was used.
7 was added to 20 parts by weight of NKP-8377 (a fluorescent pigment dyed with allylsulfonamide / melamine formaldehyde resin, manufactured by Nippon Fluorescent Chemical Co., Ltd.) and 33.
A purple aqueous fluorescent pigment composition was obtained in the same manner as in Example 1 except that 53.5 parts by weight was changed to 53.5 parts by weight.

Comparative Example 2 In Example 2, LUMIKOL NKW-2105
Was added to 15 parts by weight of Synloych color FZ-2007 (a fluorescent pigment dyed with allyl sulfoamide / melamine formaldehyde resin, manufactured by Shinloych Co., Ltd.).
Example 2 except that 15 parts by weight of water was replaced by 30 parts by weight of water.
In the same manner as in the above, a yellow aqueous fluorescent pigment composition was obtained.

Comparative Example 3 In Example 3, TI-BL6619 was replaced with NKP-8.
A blue aqueous fluorescent pigment composition was obtained in the same manner as in Example 3, except that 328 (a fluorescent pigment stained with an allyl sulfoamide / melamine formaldehyde resin, manufactured by Nippon Fluorescent Chemical Co., Ltd.) was used.

The aqueous fluorescent pigment compositions obtained in Examples 1 to 3 and Comparative Examples 1 to 3 were subjected to a fluidity test with time.
Table 1 shows the results.

Fluid property test JIS K 5101 Pigment test method 10.1 The average of the values measured three times by the spread meter method was calculated. The unit is mm. The measurements were performed on the aqueous fluorescent pigment compositions obtained in Examples 1 to 3 and Comparative Examples 1 to 3 immediately after preparation and after storage under the following conditions. Storage conditions: 60 ml of each aqueous pigment composition was placed in a test tube with a lid, sealed, and left at 80 ° C. for 30 days.

[0019]

[Table 1]

[0020]

As described in detail above, the aqueous fluorescent pigment composition according to the present invention is particularly useful as a water-resistant poster color or watercolor paint which does not thicken or harden over time at high temperatures.

Claims (1)

[Claims] 1. An aqueous fluorescent pigment composition comprising at least an acrylic resin-based fluorescent pigment, an acrylate-based emulsion, and water.