WO2009031481A1

WO2009031481A1 - Infrared-absorbing textile materials and dyeing process for imparting infrared-absorbing power

Info

Publication number: WO2009031481A1
Application number: PCT/JP2008/065618
Authority: WO
Inventors: Nobumichi Iwasaki; Yasuo Kogure; Tatsuya Koga
Original assignee: Asakura Senpu Co., Ltd.; Yamada Chemical Co., Ltd.
Priority date: 2007-09-07
Filing date: 2008-08-25
Publication date: 2009-03-12
Also published as: JP2009062652A

Abstract

The invention provides a dyeing process for imparting infrared-absorbing power which does not need a larger amount of a black dye for attaining a higher infrared-absorbing power even when a dyeing process capable of realizing small lot production is employed and which enables dyeing even in non-black colors. A dyeing process for imparting infrared-absorbing power which comprises immersing a nylon or wool textile material in a dye bath comprising a mordant dye selected from among Mordant Black 601 (trade name: a product of Yamada Chemical Co., Ltd.), C.I. Mordant Black 7, C.I. Mordant Black 11, and C.I. Mordant Black 51 and a chromium-containing dye selected from between C.I. Acid Blue-158 and C.I. Acid Blue-193 and subjecting the resulting textile material to iron mordanting and which can attain such dyeing as to bring about an infrared reflectivity of 30% or below in a wavelength region of 800 to 1000nm.

Description

Infrared absorbing fiber and infrared absorbing ability dyeing method

Technical field

The present invention relates to an infrared-absorbing fiber and an infrared ray-absorbing dyeing method capable of preventing transmission of bright clothing in infrared imaging.

Background art

As is well known, it is a generally accepted practice to record the activities of athletes for recording purposes. On the other hand, the development of cameras that can shoot subjects with less visible light is progressing, and high-performance infrared cameras have been put into practical use.

And for the act of shooting the activities of athletes wearing uniforms that fit the body with the infrared camera, the development of uniforms that do not transmit infrared rays is eagerly desired to prevent radiography. Technological development has been advancing to give fibers the ability to absorb infrared rays by dyeing fibers using dyes with high absorption in the region and by kneading or coating infrared absorbents into synthetic fibers. Specifically, fluoroscopic sneak shot block shorts (product name: SUNPLAY IR BIKI NI: jointly developed by Sanai Co., Ltd. and Asahi Kasei Textile Co., Ltd.) Product).

In the dyeing method, a near-infrared absorption is obtained by combining a dye having a characteristic that the absorption in the near-infrared region is larger than that of the black dye and another dye, so that the near-infrared absorption is about 750 to 900 nm. Spectral reflectance of 40% or less, over 900nm to 1200nm range In the near infrared absorption processing method, which is 55% or less, and more than 1200 and 65% or less in the range of 1500 nm has been proposed (see Japanese Laid-Open Patent Publication No. 9 1 2 9 1 4 6 3). Uses at least a part of the fabric constituting the garment, and at least a part of the infrared-absorbing fiber material having an infrared-absorbing characteristic of a structure in which the infrared-absorbing material is kneaded or adhered in the fiber or on the fiber surface. Infrared-absorbing garments (see Japanese Laid-Open Patent Publication No. 2 0 0 — 1 7 8 8 0 9) and underwear used in close contact with the human body, etc., which are sewn with an infrared-absorbing fabric to prevent see-through of clothing during infrared imaging A fabric for anti-photographing that enables prevention of radiography by forming a thin film made of metal, carbide, metal carbide or ceramic on the surface of the fabric used in the process and reflecting or absorbing infrared rays by the thin film. Clothing is proposed (See Japanese Laid-Open Patent Publication No. 2005-0 4 2 2 52).

However, in the near-infrared absorption processing method, the near-infrared absorption degree is 40% or less as spectral reflectance from 750 to 900 nm, 55% or less in the range from 900 mn to 1200 nm, and 65% or less in the range from 1200 to 1500 nm. Therefore, sufficient anti-passing effect cannot be obtained, and in order to further reduce the spectral reflectance (increase the infrared absorption ability), a large amount of black dye is required, and the dyeing of the fabric becomes black. There was a problem. In addition, in the infrared absorbing garment, the anti-transmission cloth or the garment, the infrared absorbing fiber material is manufactured by kneading and adhering the infrared absorbing agent at the spinning stage and using the kneaded and adhering fiber yarn. It is necessary to produce and stock a large amount of kneaded / attached fiber yarns so that they can be received, and there is a problem that it is not suitable for small-lot production of infrared absorbing fibers. .

Therefore, the present invention does not require a large amount of black dye to realize further high-performance infrared absorption ability even when a dyeing method capable of realizing small-lot production is adopted. Furthermore, as a technical issue to obtain an infrared absorbing dyeing method capable of dyeing colors other than black, we conducted research and experimentation to achieve its realization, and as a result of iron mordant using metal mordant dye If dyed, iron dye is contained in the dyed dye structure and has an effective infrared absorbing ability. Furthermore, a combination of a metal mordant dye and a chromium-containing dye provides a high-performance infrared absorbing ability. The inventors have obtained the remarkable knowledge that the hue of the visible part can be adjusted and the color range is widened, and the technical problem has been achieved. Disclosure of the invention

The infrared absorbing fiber according to claim 1 of the present invention is dyed by iron mordanting using a metal mordanting dye.

In addition, the infrared absorbing fiber according to the second aspect of the present invention is obtained by blending a metal mordant dye with a chromium metal-containing dye and dyeing it with iron mordant.

The infrared absorbing fiber according to claim 3 of the present invention is the infrared absorbing fiber according to claim 2, wherein the chromium-containing dye is a dye C.I. Acid Blue-158 or a dye. I. Acid Blue-193.

The infrared absorbing fiber according to claim 4 of the present invention is the infrared absorbing fiber according to any one of claims 1 to 3, wherein the metal mordant dye has a structural formula (1 )

Dye represented by: Mordant Black 601 (trade name: manufactured by Yamada Chemical Co., Ltd.), Dye C. L Mordant Black 7, Dye CI Mordant Black 11 and Dye CI Mordant Black 51

The infrared absorbing fiber according to claim 5 of the present invention is the infrared absorbing fiber according to any one of claims 1 to 4, wherein the infrared ray has a wavelength of 800 to 1000 nm. The reflectivity is less than 30%.

Further, in the method for dyeing infrared absorption according to claim 6 of the present invention, the infrared ray at a wavelength of 800 to 1000 nm is obtained by immersing nylon or wool fiber in a dyeing bath using a metal mordant dye and iron mordant. The dyeing process is performed so that the reflectance is 30% or less.

The infrared absorbing ability-imparting dyeing method according to claim 7 of the present invention is the infrared absorbing ability-improving dyeing method according to claim 6, wherein the metal mordant dye is represented by the structural formula (1).

Dyes represented by the formula Mordant Black 601 (trade name: manufactured by Yamada Chemical Co., Ltd.), dye CI Mordant Black 7, dye CI Mordant Black 11 and dye CI Mordant Black 51 are selected.

In addition, the dyeing method for imparting infrared absorption ability according to claim 8 of the present invention has a wavelength of 800 by immersing nylon or wool fiber in a dyeing bath in which a metal-containing dye is mixed with a chromium-containing dye, and iron-dyed. A dyeing treatment is applied so that the infrared reflectance at ˜1000 nm is 30% or less.

Furthermore, the infrared absorptive dyeing method according to claim 9 of the present invention is the above-mentioned claim. In the dyeing method for imparting infrared absorptive power according to item 8, the metal mordant dye is represented by the structural formula (1)

Dye represented by: Mordant Black 601 (trade name: manufactured by Yamada Chemical Co., Ltd.), Dye CI Mordant Black 7, Dye CI Mordant Black 11 and Dye I. Mordant Black 51 It is a dye selected from the dye CI Acid Blue-158 and the dye CI Acid Blue-193.

According to the present invention, since the fiber is dyed by iron mordanting using a metal mordanting dye, it has iron chelate in the dyed dye structure, so that it can exhibit further high-performance infrared absorption ability, Furthermore, since the hue of the visible part can be adjusted by the combination of the metal mordant dye and the chromium-containing dye, it is possible to dye colors other than black. BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1.

The infrared absorptive fiber according to the present embodiment is dyed in a black color by iron mordanting using a metal mordant dye, and has an iron chelate in the dye structure dyed by iron mordanting. Therefore, it exhibits particularly effective infrared absorption ability near the wavelength of 800 nm.

In addition, if the metal mordant dye is mixed with iron mordanting dye and dyed with iron mordanting, it can effectively absorb infrared light at a wavelength of 800 to 1000 nm due to the synergistic effect with the metal mordanting dye. Effectively prevents radiography at wavelengths between 800 and 1000 nm. Furthermore, the hue of the visible part can be adjusted by the combination of a metal mordant dye and a chrome-containing dye, so that the color range is widened in dyeing and dyes blue and amber colors as well. Can do. · The metal mordant dye has the structural formula (1)

It is preferable to select a dye Mordant Black 601 (trade name: manufactured by Yamada Chemical Co., Ltd.), a dye CI Mordant Black 7, a dye CI Mordant Black 11 and a dye CI Mordant Black 51. As the chromium metal-containing dye, it is preferable to use one of the dye CI Acid Blue-158 and the dye CI Acid Blue-193. As a result, it is possible to obtain an infrared absorptive fiber having an infrared reflectance of 30% or less at a wavelength of 800 to 1000 nm.

Embodiment 2.

The infrared absorption capability imparting dyeing method according to the present embodiment has an infrared reflectance at a wavelength of 800 to 1000 nm, which is obtained by immersing a naïve or wool fiber in a dye bath using a metal mordant dye and iron mordant. It is for dyeing to be less than%.

Further, it is more preferable to immerse nylon or wool fibers in a dyeing bath in which a metal mordant dye is mixed with a chromium-containing dye, and then iron mordant.

Example 1:

Dye Mordant Black 601 (trade name: Yamada Chemical Co., Ltd.) in 200 ml of water 0.14 g of acetic acid and 0.08 g of acetic acid are immersed in 4 g of 6 nylon jersey and heated to boiling while stirring After boiling and holding for 30 minutes, ferrous sulfate (7 water salt) 0.06 was added, followed by boiling for '30 minutes. Next, after cooling the dye bath to a temperature of 60 ° C., 6 nylon jersey was taken out from the dye bath, washed with water and dried to obtain infrared absorbing fibers. The dyeing density of the dye Mordant Blac k 601 was 4% ο · w. F.

When the infrared ray absorbing fiber was measured for the infrared reflectance at 830 nm and lOOOrnn by the spectrum measurement method, it was 7.6% at 830 nm and 20.3% at lOOOnm. The dyed nylon jersey was dyed black.

The spectrum measurement method uses a spectrophotometer (V-570: manufactured by JASCO Corporation) to attach the sample dyed cloth in close contact with a white plate and measure the surface of the sample dyed cloth. According to the method to do.

Example 2:

Immerse 4 g of 6 nylon jar in a dye bath containing 0.112 _g of dye CI Mordant Black 7 and 0.08 _g of acetic acid in 200 ml of water. Ferrous iron (7 water salt) 0.06g was added, followed by boiling for 30 minutes. Next, after the dyeing bath was cooled to a temperature of 60 ° C., the 6 nylon jersey was taken out from the dyeing bath, washed with water and dried to obtain infrared absorbing fibers. The dye density of the dye CI Mordant Black 7 was 3% ow f.

The infrared ray absorbing fiber was measured for infrared reflectance at 830ηπι and 100 Onm by the same spectrum measuring method as in Example 1. As a result, it was 20.9% at 830 nm and 29.0% at lOOOnm. The dyed nylon jersey was dyed black. Example 3

Immerse 4 g of 6 nylon jar in a dyeing bath containing 0.1 12 g of dye CI Mordant Black 11 and 0.08 g of acetic acid in 200 ml of water, bring it to boiling with stirring and hold it for 30 minutes. Ferrous acid (7 water salt) 0.06g was added, followed by boiling for 30 minutes. Next, after the dyebath was cooled to a temperature of 60 ° C., 6 night jerseys were taken out from the dyebath, washed with water and dried to obtain infrared absorbing fibers. The dyeing density of the dye CI Mordant Black 11 was 3% ow f.

The infrared absorbing fiber was measured at 830 nm and 100 by the same spectrum measurement method as in Example 1.

The infrared reflectance at Onm was measured and found to be 23.2% at 830 nm and 28.5% at lOOOnm. Also, the dyed nylon jersey was dyed brown. Example 4:

Immerse 4 g of Nylon Gyrge in a dyeing bath containing 0 · 16 g of dye CI Mordant Black 51 and 0.08 g of acetic acid in 200 ml of water, bring it to boiling with stirring and hold it for 30 minutes. Ferrous iron (7 water salt) 0.06g was added, followed by boiling for 30 minutes. Next, after the dyebath was cooled to a temperature of 60 ° C., 6 night jerseys were taken out from the dyebath, washed with water and dried to obtain infrared absorbing fibers. The dyeing density of the dye CI Mordant Black 51 was 4 ° / ₀ ow f.

When the infrared reflectance of the infrared absorbing fiber was measured at 830 nm and 100 Onm by the same spectrum measuring method as in Example 1, it was 11.5% at 830 nm and 18.6% at lOOOnm. The dyed nylon jersey was dyed black. Example 5:

Dilute Mordant Black 601 with 0.04g of dye and CI Acid Blue-193 with 0.12g of acetic acid and 0.04g of acetic acid in 200ml of water. Dip 6g of nylon jersey and boil while stirring. After holding for 30 minutes, 0.02 g of ferrous sulfate (7-hydrate) was added, followed by boiling for 30 minutes. Next, after the dyeing bath was cooled to a temperature of 60 ° C., a 6 nylon jersey was taken out from the dyeing bath, washed with water and dried to obtain an infrared absorbing fiber. Dye Mordant Black The staining density of 601 is 1 ° /. The dyeing density of ow f, the dye CI Acid Blue-193 was 3% ow f.

The infrared-absorbing fiber was measured for infrared reflectance at 830 nm and 100 Onm by the same spectral measurement method as in Example 1. As a result, it was 13.5% at 830 nm and 25.3% at lOOOnm. Also, the dyed nylon jersey was dyed in a dark blue color. Example 6:

Dilute Mordant Black 601 with 0.04g of dye and CI Acid Blue- 158 with 0.12g and acetic acid 0.04g in 200ml of water. Dip 6g nylon jersey and boil with stirring. After holding for 30 minutes, 0.02 g of ferrous sulfate (7-hydrate) was added, followed by boiling for 30 minutes. Next, after the dyeing bath was cooled to a temperature of 60 ° C., a six-neck jersey was taken out from the dyeing bath, washed with water and dried to obtain an infrared absorbing fiber. The dyeing density of the dye Mordant Black 601 was 1% o. W. F, and that of the dye C. I. Acid Blue-193 was 3% o. W. F.

The infrared absorptive fiber was measured for infrared reflectance at 830 nm and 1,000 nm by the same spectral measurement method as in Example 1. As a result, it was 16.2% at 830 nm and 22.5% at lOOOnm. Also, the dyed nylon jersey was dyed in a dark blue color.

Comparative Example 1:

The infrared reflectance at 830 nm and lOOOnm was measured by the same spectral measurement method as in Example 1 using fluoroscopic sneak shot block shorts (trade name: SUNPLAY IR BIKINI: jointly developed by Sanai Co., Ltd. and Asahi Kasei Fiber Co., Ltd.)

Infrared reflectivity at the single part is 57.1% at 830nm, 94.7% at lOOOnm, Infrared reflectivity at double part is 56.2% at 830nm, 89.6% at lOOOnm there were.

Comparative Example 2:

Infrared reflectance at 830 nm and lOOOnm was measured by the same spectral measurement method as in Example 1 using a transmission photographing prevention inner (trade name: SH0TGUAR0 inner short: manufactured by Kramer Japan Co., Ltd.).

The infrared reflectance at the single part was 46.2% at 830 nm, 49.7% at lOOOnm, the infrared reflectance at the crotch part was 47.3% at 830 nm, and 50.8% at lOOOnm.

According to the present invention, the infrared reflectivity at the conventional 830 nm and lOOOnm is 46.2 to 57.1% at 830 nm, and the infrared absorbability is 49.7 to 94.7% at lOOOnm. Can be obtained by a dyeing method, so that it can be used for small-lot production that produces high-performance infrared-absorbing fibers as needed. Because it can be dyed in colors, it can be used to manufacture infrared absorbing uniforms for girls of elementary, junior high and high school students.

Claims

Range of requests

1. Infrared absorptive fiber dyed by iron mordant using metal mordant dye.

2. Infrared absorbing fiber made by mixing metal mordant dye with chromium metal dye and dyeing with iron mordant.

3. The infrared-absorbing fiber according to claim 2, wherein the chromium-containing dye is dye C.I. Acid Blue-158 or dye C.I. Acid Blue-193.

4. Metal mordant dye is structural formula (1)

A dye represented by: Mordant Black 601 (trade name: manufactured by Yamada Chemical Co., Ltd.), dye CI Mordant Black 7, dye CI Mordant Black 11 and dye CI Mordant Black 51 The infrared absorbing fiber according to any one of claims 3 to 4.

5. The infrared-absorbing fiber according to any one of claims 1 to 4, wherein the infrared reflectance at a wavelength of 800 to 1000 nm is 30% or less.

6. It is characterized in that it is dyed so that the infrared reflectivity at a wavelength of 800 to 1000ηηι is 30% or less by immersing the iron or wool fibers in a dye bath using a metal mordant dye and iron mordant. Infrared absorbing ability imparting dyeing method.

7. Metal mordant dye is structural formula (1)

Dye represented by: Mordant Black 601 (trade name: manufactured by Yamada Chemical Co., Ltd.), Dye CI Mordant Black 7, Dye CI Mordant Black 11 and Dye I. Mordant Black 51 The method for imparting infrared absorption capability described in 1.

8. Infrared reflectance at a wavelength of 800-1000nm is reduced to 30% or less by immersing Na-Ki or wool fiber in a dye bath containing a metal mordanting dye and a metal mordant dye in a dye bath. A dyeing method for imparting infrared absorption, characterized by performing a dyeing process.

9. Metal mordant dye is structural formula (1)

Dye represented by: Mordant Black 601 (trade name: manufactured by Yamada Chemical Co., Ltd.), Dye C. Ye. Mordant Black 7, Dye CI Mordant Black 11 and Dye I. Mordant Black 51 9. The infrared ray absorbing ability imparting dyeing method according to claim 8, wherein the gold dye is a dye selected from the dye CI Acid Blue-158 and the dye CI Acid Blue-193.