JP2009138117A - Flame-retardant ink composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a flame-retardant ink composition that is mainly useful especially in a fabric and improves clarity of color tone and fastness to rubbing of printed surface. <P>SOLUTION: The flame-retardant ink composition includes a pigment, an organophosphate-based flame retardant and at least one of a binder selected from the group consisting of a polyester resin-based binder and an acrylate copolymer resin-based binder and at least one selected from the group consisting of methyl cellulose and ethyl cellulose. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a flame retardant ink composition, and more particularly, to a flame retardant ink composition that is mainly used for fabrics and can improve the vividness of hue and the friction fastness of a printed surface.

  When printing fabric products such as flags, lanterns, curtains, tablecloths, etc., not only vivid colors but also frictional fastness of the printed surface is required.

  Conventionally, in order to impart flame retardancy to such fabric products, printing has been performed using an ink composition containing a halogen-based mixed flame retardant composed of, for example, decabromodiphenyl ether and antimony trioxide. (For example, patent document 1).

However, in the prior art using the flame retardant as described above, there has been a problem that the hue of printing is whitened and sufficient sharpness cannot be obtained, or the friction fastness of the printed surface is not sufficient. Moreover, it was requested not to use the flame retardant containing a halogen from consideration to the environment.
Japanese Patent Laid-Open No. 11-1871

  The present invention has been made to solve the above-mentioned problems, and provides a flame-retardant ink composition that is excellent in the hue of printing on a fabric and the frictional fastness of a printed surface, and that satisfies the requirements for dehalogenation. The purpose is to do.

  In order to solve the above problems, the flame retardant ink composition of the present invention is selected from the group consisting of pigments, organophosphate flame retardants, polyester resin binders, and acrylate copolymer resin binders. Further, at least one binder is included.

  The flame retardant ink composition preferably further contains at least one selected from the group consisting of methyl cellulose and hydroxyethyl cellulose.

  According to the flame retardant ink composition of the present invention, it is possible to obtain a printed matter in which the hue is sharp and the frictional fastness of the printed surface is the same as or better than when no flame retardant is used. Halogen requirements are also met.

  Furthermore, the use of methylcellulose and / or hydroxyethylcellulose provides the effect of preventing bleeding that may occur in printing on polyester fabrics.

  The pigment used in the present invention is not particularly limited, and organic or inorganic pigments conventionally used for dyeing fabrics and the like can be appropriately used. Examples include extender pigments, metal lake pigments, natural organic pigments, and synthetic organic pigments. Of these, synthetic organic pigments are preferred. Examples of synthetic organic pigments include phthalocyanine, azo, nitro, nitroso, quinacridone, and anthraquinone.

  The flame retardant used in the present invention is an organic phosphate compound. Examples thereof include ammonium polyphosphate, melamine polyphosphate, and polyphosphate amide. A flame retardant may be used individually by 1 type and can also be used in combination of 2 or more type. Preferable examples of commercially available organophosphate flame retardants include ammonium polyphosphate flame retardants such as Peco Flame STC and Peco Flame S-ST1 manufactured by Clariant Japan.

  When these organic phosphate compounds are used, vivid color development is obtained, and the tendency is particularly remarkable in red. It can also meet the demand for dehalogenation.

  The amount of the flame retardant used is 50 to 150% by weight (however, in terms of solid content) with respect to the binder amount, although it depends on the required level of flame retardancy and the fabric to be printed.

  Next, the binder used by this invention is 1 type, or 2 or more types selected from the group which consists of a polyester resin binder and an acrylate copolymer resin binder. When using 2 or more types, you may use 2 or more types of either a polyester resin-type binder or an acrylic ester copolymer resin-type binder, and may use both together.

  By using these binders, the friction fastness of the printed surface can be improved.

  The amount of binder used also depends on the type and material to be printed, but as a guide, it is 50% to 35% by weight with respect to the finished ink.

Preferable examples of commercially available polyester resin binders include May binders manufactured by Meisei Chemical Industry Co., Ltd. and plus coats manufactured by Kyoyo Chemical Industry Co., Ltd. Examples of acrylic ester copolymer resin binders Examples include Movinyl 7400 manufactured by Nichigo Movinyl Co., Ltd. In the present invention, it is preferable to use methyl cellulose and / or hydroxyethyl cellulose in addition to the above essential components. By using one or more of these, it is possible to effectively prevent bleeding that may occur when printing on a polyester fabric.

  The amount of methyl cellulose and / or hydroxyethyl cellulose is 0 to 10% by weight in an aqueous solution having a concentration of 3% with respect to the ink weight, although it depends on the use conditions of other components such as a binder.

  In the flame-retardant ink composition of the present invention, additives conventionally used in the ink composition can be appropriately used as necessary in addition to the above components. For example, emulsifiers, dispersion stabilizers, drying retarders such as urea, oil components such as mineral tarpenes, binder crosslinking agents, and the like.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further more concretely, this invention is not limited to a following example. In addition, “parts” in the following blending amounts indicate parts by weight.

[Example 1]
A flame retardant composition was prepared with the following composition, and a flame retardant ink composition was prepared using the composition.

<Flame retardant composition 1>
Organophosphate flame retardant (Clariant Japan Co., Ltd., Peco Frame S-ST1) 70 parts Acrylate ester copolymer resin binder (Nichigo Mobile Co., Ltd., Mobile 7400) 20 parts Polyester resin binder (Maysei Chemical Industry Co., Ltd., May Binder NS) 4 parts Half emulsion 3 parts Crosslinker 2 parts Emulsifier 1 part

However, the half emulsion has the following composition (the same applies to the following examples);
Emulsifier 5 parts Urea 5 parts Tarpen 70 parts Water 20 parts

<Flame-retardant ink composition 1>
Flame retardant composition 1 92 parts Pigment (Dai Nippon Ink Chemical Co., Ltd. Ryudai-W Blue GLK) 8 parts

  The flame retardant ink composition obtained as described above was printed on a polyester tropical test cloth, and the fastness to friction, frictional discoloration, flame retardancy and color development were examined by the following test methods. The results are shown in Table 1.

Friction fastness, friction discoloration: Using a dyeing friction fastness tester RT-200, manufactured by Daiei Kagaku Seiki Seisakusho Co., Ltd., each was tested dry and wet, and evaluated with grades 1-5.
Flame retardancy: A combustion test was conducted by a 45 ° micro burner method, and the burned area (cm ² ) was measured.
Color developability: Evaluated visually by 7 levels (x, x-Δ, Δ, Δ-O, ○, ○-、, ◎).

[Comparative Example 1]
Instead of the flame retardant composition 1, except that 92 parts of regular reducer (consisting of urea, binder, crosslinking agent, turpentine, aqueous ammonia, alkali-added thickener and water and containing no flame retardant) was used. It printed on the polyester tropical which is a test cloth like the above, and examined the fastness to friction, the friction discoloration, the flame retardance, and the coloring property. The results are shown in Table 1.

[Comparative Example 2]
Instead of the flame retardant composition 1, 88 parts of the same regular reducer used in Comparative Example 1 was used and printed on a polyester tropical test cloth in the same manner as above except that 12 parts of the pigment was used. The fastness to friction, friction discoloration, flame retardancy and color development were investigated. The results are shown in Table 1.

[Comparative Example 3]
Instead of the above flame retardant composition 1, 88 parts of a mixture of decabromodiphenyl ether / antimony flame retardant and regular reducer (mixing ratio 40:60) was used, and the same as above except that 12 parts of pigment were used. Then, printing was conducted on polyester tropical test cloth, and the fastness to friction, frictional discoloration, flame retardancy and color development were examined. The results are shown in Table 1.

[Example 2]
Printing was carried out in the same manner as in Example 1 except that the following flame retardant composition 2 was used and the composition of the flame retardant ink composition was changed as follows. Friction fastness, friction discoloration, flame retardancy and color development Sex was examined in the same way. The results are shown in Table 2.

<Flame retardant composition 2>
Organophosphate (Clariant Japan Co., Ltd., Peco Frame STC) 35 parts Acrylate ester copolymer resin binder (Nichigo Movinyl Co., Ltd., Mobile 7400) 30 parts Polyester resin binder (Meisei Chemical Industry ( Co., Ltd., May Binder NS) 10 parts Half emulsion 10 parts Methyl cellulose (Nichigo Movinyl Co., Ltd., Chiroze MH) 10 parts Water 5 parts

<Flame-retardant ink composition 2>
Flame retardant composition 2 92 parts Pigment 8 parts

  The flame-retardant ink composition of the present invention is suitably used for printing on fabrics, especially polyester fabrics, and is particularly suitable for printing products that require fastness to friction such as flags and bags.

Claims (2)

Pigments,
A flame retardant ink composition comprising an organic phosphate flame retardant, and at least one binder selected from the group consisting of a polyester resin binder and an acrylate copolymer resin binder.   The flame-retardant ink composition according to claim 1, further comprising at least one selected from the group consisting of methylcellulose and hydroxyethylcellulose.