JPH0410178Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to waterproof and cold-protective clothing that has heat-sensitive reversible color change properties.

(Prior Art and Problems) Various thermosensitive and reversible color-changing ink compositions that change color depending on temperature have been known and have been put to practical use in the fields of towels, toys, and the like.

Attempts have been made to apply this thermochromic phenomenon to textile products such as clothing, but even when a thermosensitive reversible color-changing ink composition is applied or printed on fabric, the light resistance is low and it is not practical. , especially ski wear, etc., has not even been considered.

(Means for Solving the Problems) The purpose of the present invention is to solve the above problems and provide a thermosensitive, reversible color-changing, waterproof and cold-protective garment that can stably exhibit thermochromism over a long period of time.

The heat-sensitive reversible color-changing waterproof and cold-protective clothing of the present invention has the following configuration. That is, a fiber base material layer (layer A), a synthetic resin layer containing thermosensitive reversible color-changing ink encapsulated in microcapsules (layer B), and a synthetic resin layer containing an ultraviolet absorber and/or an antioxidant (layer C). ) and (A
A heat-sensitive device characterized by using coated fabric, which is a laminated structure in the order of layer)/(C layer)/(B layer)/(C layer)/, on the entire surface or part of the outer material. It is a reversible color-changing waterproof and cold protection garment.

The fiber base material used in the present invention may be any sheet-like material containing fiber as an essential component.
For example, synthetic fibers such as polyamide and polyester,
Regenerated fibers such as rayon and acetate, cotton, wool,
Examples include woven fabrics, knitted fabrics, non-woven fabrics, etc. made of natural fibers such as silk. These base materials can also be used after being dyed or treated with water repellent treatment.

As the heat-sensitive reversible color-changing ink, any substance or composition that changes color reversibly depending on temperature can be used. For example, Japanese Patent Publication No. 51-35414,
Those described in Japanese Patent Publication No. 51-44708 and Japanese Patent Publication No. 57-76072 are used. In order to effectively exhibit the thermochromism phenomenon in waterproof and cold-proof clothing such as ski wear, it is necessary to
Particularly preferred are those that change color at -20 to 50°C. In the present invention, in order to improve light resistance to a level that poses no practical problems, it is essential to disperse these heat-sensitive reversible color-changing inks in a synthetic resin while encapsulating them in microcapsules. Furthermore, by encapsulating heat-sensitive reversible color-changing ink in microcapsules, it has become possible to develop multiple colors independently.

Specific examples of synthetic resins used in the present invention include polyurethane, polyacrylic ester, polymethacrylic ester, polyamide, polyester, ABS resin, polyvinyl chloride, polyolefin, polysulfone, ethylene-vinyl acetate copolymer, and polychlorinated Vinylidene, fluororesins, etc.

In this invention, the ultraviolet absorber and antioxidant are
Although each can be used alone, it is preferable to use both together. As the ultraviolet absorber, benzotriazole-based, oxalamide-based, benzophenone-based, and hindered amine-based ones are preferred. Furthermore, as the antioxidant, hindered phenol type antioxidants are preferred.

These ultraviolet absorbers and antioxidants are preferably contained in the C layer in an amount of 0.01% by weight or more, particularly 0.1 to 7.0% by weight, although it depends on the synthetic resin used.
It is preferable that the content is % by weight.

The thermosensitive reversible color-changing fabric used in the waterproof and cold-proof clothing of the present invention has a four-layer laminated structure as described above, but the entire surface does not necessarily have to be this structure.
It is sufficient if a part of the structure has the above structure. It is also possible to combine a normal fabric that does not have heat-sensitive reversible discoloration with a fabric that has heat-sensitive reversible discoloration to change the pattern from plain to patterned or from patterned to plain based on changes in temperature. It is. Even if the entire surface of the fabric is heat-sensitive and reversibly discolored, by partially providing a heat insulating layer on the inside, the fabric can change from a plain pattern to a patterned fabric or from a patterned fabric to a plain pattern as the temperature changes, in the same manner as above. is possible.

In addition, another method of forming the handle is
This can also be achieved by locally destroying the microcapsules using heat, pressure, etc., as described in No. 51-35414.

Since the heat-sensitive reversible color-changing ink used in the present invention is encapsulated in microcapsules, it is possible to change the color to various colors depending on each temperature range. For example, (1) Ink that changes from white to colorless at -10℃ (2) Ink that changes from yellow to colorless at 0℃ (3) Ink that changes from blue to colorless at 10℃ (4) Ink that changes from red to colorless at 20℃ When layer B is formed by mixing four types of heat-sensitive reversible color-changing inks, each of which is encapsulated in microcapsules, with a synthetic resin, the color changes to gray below -10°C, -10 to 0.
Black at ℃, purple at 0-10℃, red at 10-20℃, 20
It turns colorless at temperatures above ℃, allowing you to enjoy an extremely wide variety of color changes.

Further, in the thermosensitive reversible color-changing fabric, it is necessary to provide the C layer outside the B layer when viewed from either the front or the back in order to improve the light resistance.

The heat-sensitive reversible color-changing laminated structure used in the present invention can further improve water repellency and abrasion resistance by providing a separate protective layer as the outermost layer, if necessary. As the protective layer, a synthetic resin layer having wear resistance, such as vinyl chloride, polymethyl methacrylate, polyethyl methacrylate, polyamide,
ABS resin, polyvinylidene chloride, etc. are preferred.
The thickness of each layer varies depending on the purpose of use, but layer B is 10
-40μ, C layer is about 3-20μ.

Further, depending on the purpose of use, a matting agent such as titanium oxide or silicon oxide may be added to the layer constituting the outermost layer in an amount of about 0.1 to 10% by weight based on the outermost layer.

In addition, if a transparent fiber base material is used and the base material side is the outer surface, it can have the function of protecting the coating layer, and has durability against external forces such as abrasion resistance, kneading resistance, and scratch resistance. It is preferable because the properties are improved.

The method for applying each layer of the heat-sensitive reversible color-changing laminated structure used in the present invention can be direct coating, transfer coating, gravure coating, etc., and the method for removing the solvent can be either wet or dry.

(Example) Polyester polyurethane Rheocoat 9054 (manufactured by Daiichi Lace Co., Ltd.) on nylon taffeta (A layer)
100 parts, melamine crosslinking agent Supervecamine
5 parts of 820J (manufactured by Dainippon Ink Co., Ltd.), 0.15 parts of p-toluenesulfonic acid as a crosslinking accelerator, 35 parts of toluene as a solvent, and 5% dimethyl fluoride of Tinuvin P (manufactured by Ciba Geigy (AG)) as an ultraviolet absorber. A coating solution consisting of 1 part of Lumamide (hereinafter referred to as DMF) solution and 14 parts of a 5% DMF solution of Sumilizer BBM (manufactured by Sumitomo Chemical Co., Ltd.) as an antioxidant was used.
It was coated at a rate of 30 g/m ² and dried to form layer C. Next, 30 parts of Superflex 300 (Daiichi Kogyo Seiyaku Co., Ltd.), a thermochromic color S-22-C/# that changes color from green to yellow, was applied with a thermosensitive reversible color-changing ink composition encapsulated in microcapsules. A coating solution consisting of 150 parts of B-103 (manufactured by Matsui Shiki Co., Ltd.), 6 parts of Sumitekus M-3 (manufactured by Sumitomo Chemical Co., Ltd.), a melamine-based crosslinking agent, and Sumitekus Scatterizer was used.
It was applied at a rate of 150 g/m ² and dried to form layer B. In addition, Crisbon 7667 (Dainippon Ink Co., Ltd.)
100 parts of Tinuvin P (manufactured by Ciba Geigy (AG)) as an ultraviolet absorber, 0.5 parts of Sumilizer BBM (manufactured by Sumitomo Chemical Co., Ltd.) as an antioxidant, 1 part of DMF and methyl ethyl ketone (hereinafter referred to as MEK):
A coating solution consisting of 80 parts of 1 mixed solvent was applied at a rate of 25 g/m ² and dried to form layer C. Next, it was impregnated with a 3.5% aqueous solution of Scotchigard FC-453 (manufactured by Sumitomo 3M Co., Ltd.), squeezed with a mangle to a 40% reduction, dried, and heat-set at 160°C for 30 seconds using a drawing machine for coating. It is a coated fabric with three layers. Furthermore, in order to improve the rubbing resistance, a 25% solution of polymethacrylic acid ester in ethyl nitrate was applied at a rate of 25 g/m ² and then dried.
The width was set at 160°C for 30 seconds. Using the fabric thus obtained, one-piece ski wear with padding was sewn in a conventional manner. This ski wear reversibly changed color from green to yellow due to temperature differences. In addition, the light resistance is JIS L 0842.
It was grade 4 or above in the Fade test of JIS K 6328, and the kneading resistance was sufficiently durable for practical use with no abnormalities observed even after 1000 times of 1 kg.

(Effect of the invention) The heat-sensitive reversible color-changing waterproof and cold-protective clothing of the present invention has the characteristic of changing color depending on the temperature, and the combination of the color tone and coloring temperature of the heat-sensitive reversible color-changing ink used makes it practical compared to conventional waterproof and cold-protective clothing. It is now possible to enjoy a variety of color changes due to temperature differences, which was previously not possible. Furthermore, by combining the fastener color, sewing thread color, and button color, it is possible to create an even greater variety of colors. These effects are particularly effective in ski wear, windbreakers, raincoats, parkas, winter jackets, etc. that are used in environments with large temperature differences between indoors and outdoors.

[Brief explanation of the drawing]

FIG. 1 shows ski wear, which is an example of thermosensitive, reversible, color-changing, waterproof and cold-protective clothing of the present invention. FIG. 2 is a perspective view showing an example of the structure of the heat-sensitive reversible color-changing coated fabric used in the present invention. In Figure 2, 1... a synthetic resin layer containing at least one of an ultraviolet absorber and an antioxidant, 2... a synthetic resin layer containing a thermosensitive reversible color-changing ink, and 3... at least an ultraviolet absorber and an antioxidant. a synthetic resin layer including one, 4... fiber base material;

Claims (1)

[Scope of utility model registration request] A fiber base material layer (layer A), a synthetic resin layer containing thermosensitive reversible color-changing ink encapsulated in microcapsules (layer B), and a synthetic resin layer containing an ultraviolet absorber and/or antioxidant (layer C). It consists of (A
A heat-sensitive device characterized by using coated fabric, which is a laminated structure in the order of layer)/(C layer)/(B layer)/(C layer)/, on the entire surface or part of the outer material. Reversible color-changing waterproof and cold weather clothing.