JP2002064603A - Reversible temperature-sensing discoloring portable telephone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a portable telephone to have a temperature indicating function and decoration so as to improve it in goods quality. SOLUTION: A thermally discoloring layer, in which reversible thermally discoloring pigment micro capsules containing specific thermally discoloring composition are fixedly diffused, is provided to a part of the outer surface of a portable telephone.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は可逆感温変色性携帯
電話に関する。詳細には、温度変化により可逆的色変化
を生じさせ、外観の様相を視覚的に変化させる可逆感温
変色性携帯電話に関する。The present invention relates to a reversible thermochromic mobile phone. More specifically, the present invention relates to a reversible thermochromic mobile phone that causes a reversible color change by a temperature change to visually change the appearance.

【０００２】[0002]

【従来の技術】近時、携帯電話の普及は顕著であり、多
様な形態、多彩な外観の携帯電話が氾濫しているが、外
観の様相を視覚的に変化させるものは認められない。2. Description of the Related Art In recent years, the spread of portable telephones has been remarkable, and portable telephones of various forms and various appearances have been inundated. However, there has been no noticeable change in appearance.

【０００３】[0003]

【発明が解決しようとする課題】本発明は、この種の携
帯電話に示温機能と共に、温度変化により外観の様相を
視覚的に変化させて新たな意匠的効果を創出し、商品性
を更に高めようとするものである。SUMMARY OF THE INVENTION According to the present invention, a cellular phone of this type has a temperature-indicating function, visually changes the appearance in accordance with a change in temperature, creates a new design effect, and further enhances the merchantability. It is to try.

【０００４】[0004]

【課題を解決するための手段】本発明は、携帯電話の外
面の少なくとも一部に、（イ）電子供与性呈色性有機化
合物、（ロ）電子受容性化合物、及び（ハ）前記両者の
呈色反応の生起温度を決める反応媒体を含む熱変色性組
成物を内包させたマイクロカプセル形態の可逆熱変色性
顔料が、バインダー樹脂を介して分散状態に固着された
可逆感温変色層を設けたことを特徴とする可逆感温変色
性携帯電話を要件とする。更には、携帯電話の外装ケー
スを構成する、少なくとも一部のプラスチック部材中
に、（イ）電子供与性呈色性有機化合物、（ロ）電子受
容性化合物、及び（ハ）前記両者の呈色反応の生起温度
を決める反応媒体を含む熱変色性組成物を内包させたマ
イクロカプセル形態の可逆熱変色性顔料が、分散状態に
固着されて可逆感温変色層が形成されてなることを特徴
とする可逆感温変色性携帯電話を要件とする。更には、
携帯電話の外面の少なくとも一部に、（イ）電子供与性
呈色性有機化合物、（ロ）電子受容性化合物、及び
（ハ）前記両者の呈色反応の生起温度を決める反応媒体
を含む熱変色性組成物を内包させたマイクロカプセル形
態の可逆熱変色性顔料が、バインダー樹脂を介して分散
状態に固着された可逆感温変色層を備えた、粘着性シー
トを貼り付けてなることを特徴とする可逆感温変色性携
帯電話を要件とする。更には、携帯電話の外面の少なく
とも一部に、（イ）電子供与性呈色性有機化合物、
（ロ）電子受容性化合物、及び（ハ）前記両者の呈色反
応の生起温度を決める反応媒体を含む熱変色性組成物を
内包させたマイクロカプセル形態の可逆熱変色性顔料
が、バインダー樹脂を介して分散状態に固着された可逆
感温変色層を備えた、熱収縮性シートを装着してなるこ
とを特徴とする可逆感温変色性携帯電話を要件とする。
更には、可逆熱変色性顔料は、発色状態からの加熱によ
り消色し、消色状態からの冷却により発色する加熱消色
型、発色状態又は消色状態を特定温度域で互変的に記憶
保持する色彩記憶保持型、又は消色状態からの加熱によ
り発色し、発色状態からの降温により消色状態に復する
加熱発色型の何れかより選ばれること、可逆熱変色性顔
料は、窪みを有する非円形断面形状の最大外径の平均値
が０．１〜３０μｍの範囲にあるマイクロカプセル形態
の顔料であること、可逆感温変色層上には、天然雲母又
は偏平ガラス片の表面を酸化チタンで被覆した金属光沢
顔料をバインダー樹脂中に分散状態に固着させた金属光
沢層が積層されてなること、可逆熱変色性顔料として、
相異なる変色点を有する複数の可逆熱変色性顔料が適用
されてなること、可逆感温変色層の上層又は下層に、非
熱変色層が配されてなること、相異なる温度で変色す
る、複数の可逆感温変色層が配設されてなること、等を
要件とする。尚、前記における粘着シートは、汎用の粘
着テープ基材の一面に可逆感温変色層を設けたものが総
て有効であり、熱変色性シートは、従来より汎用のポリ
エステル、ポリエチレン、ポリプロピレン、ポリ塩化ビ
ニリデン、ポリ塩化ビニル等の一軸或いは二軸延伸フイ
ルム等を適用でき、数μｍ〜数ｍｍ程度の厚みのものか
適宜使用できる。According to the present invention, there are provided a portable telephone having at least a part thereof an (a) electron donating color-forming organic compound, (b) an electron accepting compound, and (c) both of the above. A reversible thermochromic pigment in the form of microcapsules containing a thermochromic composition containing a reaction medium that determines the temperature at which the color reaction occurs is provided with a reversible thermochromic layer fixed in a dispersed state via a binder resin. A reversible thermochromic mobile phone characterized by the following is a requirement. Furthermore, (a) an electron donating color-forming organic compound, (b) an electron-accepting compound, and (c) coloration of both of them are contained in at least a part of the plastic member constituting the outer case of the mobile phone. A reversible thermochromic pigment in the form of microcapsules containing a thermochromic composition containing a reaction medium that determines the temperature at which the reaction takes place is fixed in a dispersed state to form a reversible thermochromic layer. A reversible thermochromic mobile phone is required. Furthermore,
At least a part of the outer surface of the mobile phone includes (a) an electron-donating color-forming organic compound, (b) an electron-accepting compound, and (c) a heat medium containing a reaction medium that determines the temperature at which the color reaction between the two occurs. A reversible thermochromic pigment in the form of microcapsules containing a color-changing composition is attached to an adhesive sheet having a reversible thermochromic layer fixed in a dispersed state via a binder resin. A reversible thermochromic mobile phone is required. Further, at least a part of the outer surface of the mobile phone is provided with (a) an electron-donating color-forming organic compound,
(B) an electron-accepting compound; and (c) a reversible thermochromic pigment in the form of microcapsules containing a thermochromic composition containing a reaction medium that determines the temperature at which the color reaction of the two occurs. A reversible thermochromic mobile phone, comprising a heat-shrinkable sheet provided with a reversible thermochromic layer fixed in a dispersed state via a heat-shrinkable sheet.
In addition, the reversible thermochromic pigment decolorizes by heating from the color-developing state, and alternately stores the heat-decoloring type, the color-developing state or the decoloring state, which develops by cooling from the decoloring state, in a specific temperature range. The color memory holding type to be retained, or a color that is developed by heating from a decolored state, and is selected from any of a heated color developing type that returns to a decolored state by lowering the temperature from the colored state, the reversible thermochromic pigment has a depression. The pigment in the form of microcapsules having an average value of the maximum outer diameter of the non-circular cross-sectional shape in the range of 0.1 to 30 μm. On the reversible thermochromic layer, the surface of the natural mica or the flat glass piece is oxidized. A metallic luster layer in which a metallic luster pigment coated with titanium is fixed in a dispersed state in a binder resin is laminated, as a reversible thermochromic pigment,
A plurality of reversible thermochromic pigments having different discoloration points are applied, the upper or lower layer of the reversible thermochromic layer is provided with a non-thermochromic layer, the color of which is discolored at different temperatures, And that a reversible thermochromic layer is provided. Incidentally, the pressure-sensitive adhesive sheet in the above is all effective when a general-purpose pressure-sensitive adhesive tape base material is provided with a reversible thermosensitive color-change layer on one surface, and the thermochromic sheet is a conventionally-used general-purpose polyester, polyethylene, polypropylene, or polystyrene. A uniaxial or biaxially stretched film such as vinylidene chloride or polyvinyl chloride can be applied, and a film having a thickness of about several μm to several mm can be used as appropriate.

【０００５】前記可逆熱変色性顔料は、（イ）電子供与
性呈色性有機化合物、（ロ）電子受容性化合物、及び
（ハ）前記両者の呈色反応の生起温度を決める反応媒体
を含む、従来より公知の熱変色性組成物を壁膜により内
包化させたマイクロカプセル形態の顔料が有効である。
具体的には、本出願人が提案した、特公昭５１−４４７
０６号公報、特公昭５１−４４７０７号公報、特公平１
−２９３９８号公報等に記載のものが利用できる。前記
提案は、所定の温度（変色点）を境としてその前後で変
色し、変色点以上の温度域で消色状態、変色点未満の温
度域で発色状態を呈し、前記両状態のうち常温域では特
定の一方の状態しか存在しえない。即ち、もう一方の状
態は、その状態が発現するのに要した熱又は冷熱が適用
されている間は維持されるが、前記熱又は冷熱の適用が
なくなれば常温域で呈する状態に戻る、ヒステリシス幅
が比較的小さい特性（ΔＨ_A ＝１〜７℃）を有する加熱
消色型の熱変色性組成物を挙げることができ、ΔＨ_A が
３℃以下の系〔特公平１−２９３９８号公報に示す、３
℃以下のΔＴ値（融点−曇点）を示す脂肪酸エステルを
（ハ）成分として適用〕にあっては、温度変化に鋭敏に
感応して高感度の加熱消色性を示し、ΔＨ_Aが４〜７℃
程度の系では変色後、緩徐に元の様相に戻り、変色視認
効果を高めることができる（図５参照）。The reversible thermochromic pigment contains (a) an electron-donating color-forming organic compound, (b) an electron-accepting compound, and (c) a reaction medium for determining the temperature at which the color reaction of the two occurs. A pigment in the form of microcapsules in which a conventionally known thermochromic composition is encapsulated by a wall film is effective.
Specifically, Japanese Patent Publication No. Sho 51-4747 proposed by the present applicant has
06, JP-B-51-44707, JP-B-1
No. 29398 can be used. In the above proposal, the color is changed before and after a predetermined temperature (discoloration point) as a boundary, a decolored state is displayed in a temperature range above the color change point, and a color development state is displayed in a temperature range below the color change point. Then only one particular state can exist. That is, the other state is maintained while the heat or cold required to develop the state is applied, but returns to the state exhibited in the normal temperature range when the application of the heat or cold is stopped, hysteresis. can be mentioned width is relatively small characteristic (ΔH _a = 1~7 ℃) thermochromic composition heated decolorizable with, [Delta] H _a is 3 ° C. in the following systems [KOKOKU 1-29398 Patent Publication Show 3
℃ below ΔT value - is a fatty acid ester indicating the (melting point cloud point) to (c) applied as component], shows the heat decolorizing of sharply sensitive to high sensitivity to temperature changes, [Delta] H _A 4 ~ 7 ℃
In the degree system, after discoloration, the appearance gradually returns to the original appearance, and the effect of visually confirming discoloration can be enhanced (see FIG. 5).

【０００６】又、本出願人が提案した特公平４−１７１
５４号公報、特開平７−１７９７７７号公報、特開平７
−３３９９７号公報、特開平８−３９９３６号公報等に
記載されている大きなヒステリシス特性（ΔＨ_B ＝８〜
５０℃）を示す、即ち、温度変化による着色濃度の変化
をプロットした曲線の形状が、温度を変色温度域より低
温側から上昇させていく場合と逆に変色温度域より高温
側から下降させていく場合とで大きく異なる経路を辿っ
て変色し、ｔ₁ 以下の低温域での発色状態、又はｔ₄ 以
上の高温域での消色状態が、特定温度域〔ｔ₂ 〜ｔ₃ の
間の温度域（実質的二相保持温度域）〕で互変的に記憶
保持できる色彩記憶保持型の熱変色性組成物を適用する
ことができる（図６参照）。尚、前記実質的二相保持温
度域は、常温域（例えば、１５〜３５℃）を含むものが
汎用的であるが、前記温度範囲に特定されない。In addition, Japanese Patent Publication No. 4-171 proposed by the present applicant.
No. 54, JP-A-7-179777, JP-A-7-179777
-33997 discloses a large hysteresis characteristic described in JP-A 8-39936 Patent Publication (ΔH _B = 8~
50 ° C.), that is, the shape of the curve plotting the change in the coloring density due to the temperature change is different from the case where the temperature is increased from a temperature lower than the color change temperature range and conversely, the temperature is decreased from a temperature higher than the color change temperature range. The color changes along a route that is significantly different from the case where the color changes in a low-temperature range of t ₁ or less, or the decoloration state in a high-temperature range of t ₄ or more, occurs in a specific temperature range (between t _{2 and} t ₃ ). Temperature range (substantially two-phase holding temperature range)], and a color storage-maintaining thermochromic composition that can store and store data alternately (see FIG. 6). The substantial two-phase holding temperature range generally includes a normal temperature range (for example, 15 to 35 ° C.), but is not specified in the temperature range.

【０００７】又、加熱発色型の熱変色性組成物として、
消色状態からの加熱により発色する、本出願人の提案
（特開平１１−１２９６２３号公報、特開平１１−５９
７３号公報）による、（ロ）電子受容性化合物として、
炭素数３乃至１８の直鎖又は側鎖アルキル基を有する特
定のアルコキシフェノール化合物を適用した系、或いは
特定のヒドロキシ安息香酸エステルを適用した系（特願
平１１−２８６２０２号）を挙げることができる（図７
参照）。Further, as a thermochromic composition of a heat coloring type,
Proposal by the present applicant, which develops color by heating from a decolored state (JP-A-11-129623, JP-A-11-59)
No. 73), as (b) an electron-accepting compound,
A system to which a specific alkoxyphenol compound having a linear or side chain alkyl group having 3 to 18 carbon atoms is applied, or a system to which a specific hydroxybenzoic acid ester is applied (Japanese Patent Application No. 11-286202). (FIG. 7
reference).

【０００８】本発明は、前記した熱変色性組成物から選
ばれる、任意の変色形態の熱変色性組成物をマイクロカ
プセルに内包させたマイクロカプセル形態の顔料を適用
するものであり、更には、前記熱変色性組成物中に非熱
変色性着色剤を共存状態に内包させて、有色（１）から
有色（２）への互変的色変化を呈する構成となしたもの
も有効である。前記熱変色性組成物をカプセルに内包さ
せる手段としては、界面重合法、界面重縮合法、ｉｎ−
ｓｉｔｕ法、コアセルベート法等、公知のカプセル化方
法が適用される。According to the present invention, there is provided a microcapsule-type pigment in which a thermochromic composition having an arbitrary color change selected from the thermochromic compositions described above is encapsulated in microcapsules. It is also effective to use a composition in which a non-thermochromic colorant is included in the thermochromic composition in a coexisting state so as to exhibit a tautomeric color change from colored (1) to colored (2). Means for encapsulating the thermochromic composition in a capsule include interfacial polymerization, interfacial polycondensation, and in-
A known encapsulation method such as a situ method or a coacervate method is applied.

【０００９】可逆熱変色性顔料は、真円形断面形状の適
用を拒まないが、窪みを有する非円形断面形状のマイク
ロカプセル形態の顔料（図２乃至４）が有効である。前
記非円形断面形態の可逆熱変色性顔料を、バインダー樹
脂を含むビヒクル中に分散状態となして、塗装或いは印
刷手段等により携帯電話の外装部材表面、粘着性シート
基材表面、或いは熱収縮性フイルム表面に可逆感温変色
層を形成する系にあっては、該可逆熱変色性顔料の長径
側（最大外径側）を前記材料表面に密接させて濃密に配
向する度合いが大であり、高濃度の発色性を示す。又、
外装部材を構成する熱可塑性プラスチック部材の熱溶融
状態で前記可逆熱変色性顔料をブレンドして成形する系
にあっては、高熱及び／又は高圧力が負荷されるが、マ
イクロカプセル壁膜の破壊が回避される形状に適宜に弾
性変形して、前記負荷を緩和でき、内包の熱変色性組成
物を保護し、所期の熱変色機能を損なうことなく有効に
発現させることができる。前記可逆熱変色性顔料は、最
大外径の平均値が０．１〜３０μｍの範囲、好ましく
は、０．２〜２０μｍ、更に好ましくは、０．５〜１５
μｍの範囲にあることが、変色の鋭敏性、持久性、加工
適性等の面で有効である。The reversible thermochromic pigment does not refuse to apply a true circular cross-sectional shape, but a microcapsule-shaped pigment having a non-circular cross-sectional shape having a depression (FIGS. 2 to 4) is effective. The non-circular cross-sectional reversible thermochromic pigment is dispersed in a vehicle containing a binder resin, and the surface of an exterior member of a mobile phone, the surface of an adhesive sheet substrate, or heat shrinkage is formed by coating or printing means. In a system in which a reversible thermochromic pigment layer is formed on the film surface, the major axis (the maximum outer diameter side) of the reversible thermochromic pigment is in close contact with the material surface, and the degree of dense orientation is large. Shows high density coloring. or,
In a system in which the reversible thermochromic pigment is blended and molded in the heat-melted state of the thermoplastic member constituting the exterior member, high heat and / or high pressure is applied, but the microcapsule wall film is broken. Can be appropriately elastically deformed into a shape that avoids the above, the load can be relieved, the thermochromic composition contained therein can be protected, and the thermochromic composition can be effectively developed without impairing the intended thermochromic function. The reversible thermochromic pigment has an average maximum outer diameter of 0.1 to 30 μm, preferably 0.2 to 20 μm, and more preferably 0.5 to 15 μm.
It is effective in the range of μm in terms of sharpness of discoloration, durability, workability and the like.

【００１０】又、本発明のカプセル化された可逆熱変色
性顔料にあっては、熱変色性組成物／マイクロカプセル
壁膜＝７／１〜１／１（重量比）の範囲にあることが望
ましい。熱変色性組成物の比率が前記範囲より大になる
と壁膜の厚みが肉薄となり過ぎ、内包した熱変色性組成
物の保護機能を十分に果たすことができない。一方、壁
膜の比率が前記範囲より大になると壁膜強度が向上し、
保護機能は高められるが、熱変色性組成物の相対的な比
率の低下により発色濃度の低下を余儀なくされ、好まし
くない。In the encapsulated reversible thermochromic pigment of the present invention, the thermochromic composition / microcapsule wall film may be in the range of 7/1 to 1/1 (weight ratio). desirable. When the ratio of the thermochromic composition is larger than the above range, the thickness of the wall film becomes too thin, and the protective function of the contained thermochromic composition cannot be sufficiently achieved. On the other hand, if the ratio of the wall film is larger than the above range, the wall film strength is improved,
Although the protective function is enhanced, the relative density of the thermochromic composition is reduced, which inevitably lowers the color density, which is not preferable.

【００１１】前記可逆熱変色性顔料を、バインダー樹脂
を含む水性又は油性ビヒクル中に分散させた印刷インキ
又は塗料にあっては、可逆熱変色性顔料は、バインダー
樹脂１００重量部に対して、２０〜４００重量部の割合
でブレンドされる。２０重量部未満では、鮮明な熱変色
性を示さない。一方、４００重量部を越えると消色時に
おける色残りが発生しがちであり、好適には５０〜３５
０重量部の範囲内で適用される。一方、熱可塑性プラス
チック外装部材の熱溶融状態で可逆熱変色性顔料をブレ
ンドする系にあっては、該外装部材或いは熱収縮性フイ
ルム基材に対して、０．５〜６０重量％の範囲が有効で
ある。０．５重量％未満では、鮮明な熱変色性を示さ
ず、一方、６０重量％を越えると消色時における色残り
が発生すると共に成形される部材自体の強度を強度を損
なうことになり、好ましくは、１〜４０重量％、より好
ましくは、１〜２０重量％の範囲が有効である。In a printing ink or paint in which the reversible thermochromic pigment is dispersed in an aqueous or oil-based vehicle containing a binder resin, the reversible thermochromic pigment is used in an amount of 20 parts by weight based on 100 parts by weight of the binder resin. ４００400 parts by weight. When the amount is less than 20 parts by weight, no clear thermochromic property is exhibited. On the other hand, when the amount exceeds 400 parts by weight, color residue tends to occur at the time of decoloring, and preferably 50 to 35.
It is applied within the range of 0 parts by weight. On the other hand, in a system in which a reversible thermochromic pigment is blended in a heat-melted state of a thermoplastic exterior member, the range of 0.5 to 60% by weight is based on the exterior member or the heat-shrinkable film base material. It is valid. If it is less than 0.5% by weight, no clear thermochromic property is exhibited, while if it exceeds 60% by weight, a color remains upon decoloring and the strength of the molded member itself is impaired, Preferably, a range of 1 to 40% by weight, more preferably, 1 to 20% by weight is effective.

【００１２】可逆感温変色層は、層中に一種の可逆熱変
色性顔料を含有させたものに限らず、相異なる変色点を
有する複数の可逆熱変色性顔料を含有させて多段変色さ
せることができる。又、可逆感温変色層の形態として、
変色点、色調、濃度、或いは変色特性を異にする可逆熱
変色性顔料を含む複数の可逆感温変色層を重ね刷りして
多層構成となしたもの、相異なる温度で変色する複数の
可逆感温変色層を、適宜間隔をおいてブロック状に配し
たもの等の形態が有効である。The reversible thermochromic layer is not limited to a layer containing a kind of reversible thermochromic pigment, but may contain a plurality of reversible thermochromic pigments having different discoloration points to perform multi-stage color change. Can be. In addition, as a form of the reversible thermochromic layer,
Overprinted multiple reversible thermochromic layers containing reversible thermochromic pigments with different discoloration points, hue, density, or discoloration characteristics to form a multilayer structure, multiple reversible sensations that change color at different temperatures A form in which the thermochromic layers are arranged in blocks at appropriate intervals is effective.

【００１３】前記可逆感温変色層の上層又は下層には、
非熱変色層を積層させて多彩化させることができる。
尚、前記可逆感温変色層又は非熱変色層は、ベタ状に限
らず、文字、数字、記号、図柄等の印刷像であってもよ
い。なお、前記非熱変色層中に含まれる着色剤として
は、一般顔料、蛍光顔料、酸化チタン、蓄光顔料等が挙
げられる。The upper or lower layer of the reversible thermochromic layer includes:
Non-thermochromic layers can be laminated for versatility.
The reversible thermochromic layer or non-thermochromic layer is not limited to a solid color, and may be a printed image of characters, numerals, symbols, patterns, and the like. Note that examples of the colorant contained in the non-thermochromic layer include general pigments, fluorescent pigments, titanium oxide, and phosphorescent pigments.

【００１４】又、前記可逆感温変色層上に、金属光沢層
を積層して、前記金属光沢層側を視覚側に位置させて、
温度変化による金色、銀色、メタリック色等の金属光沢
調の多彩な色変化機能を付与すると共に、可逆感温変色
層の光劣化を抑制する機能を与えることができる。本発
明における金属光沢層は、光吸収（或いは光反射）機能
と光透過機能の両機能を兼ね備えており、可逆感温変色
層の機能低下に悪影響を及ぼす紫外線や可視光線の少な
くとも一部を吸収或いは反射させて、可逆感温変色層の
光劣化を抑止する機能を果たすと共に、可視光線も視覚
を妨げない程度の適量を透過させて、可逆感温変色層の
色変化を効果的に視覚させることができる。Further, a metallic gloss layer is laminated on the reversible thermosensitive color-changing layer, and the metallic gloss layer side is positioned on the visual side,
It is possible to provide not only a function of changing various colors of metallic gloss such as gold, silver and metallic colors due to a temperature change, but also a function of suppressing light deterioration of the reversible thermosensitive color changing layer. The metallic luster layer in the present invention has both a light absorbing (or light reflecting) function and a light transmitting function, and absorbs at least a part of ultraviolet light or visible light which adversely affects the function of the reversible thermochromic layer. Alternatively, it functions to suppress light deterioration of the reversible thermochromic layer by reflecting it, and also allows visible light to pass through an appropriate amount that does not hinder the visual perception, thereby effectively visualizing the color change of the reversible thermochromic layer. be able to.

【００１５】前記金属光沢層は、天然雲母又は偏平ガラ
ス片の表面を酸化チタンで被覆した金属光沢顔料をバイ
ンダー樹脂中に分散状態に固着させた層であり、ベタ印
刷又はベタ状に塗装されたものに限らず、文字、数字、
記号、図柄等の像であってもよい。前記金属光沢顔料と
しては、天然雲母の表面を酸化チタンで被覆した顔料が
挙げられ、具体的には、天然雲母の表面を４１〜４４重
量％の酸化チタンで被覆した粒度が５〜６０μｍの金色
金属光沢顔料、天然雲母の表面を３０〜３８重量％の酸
化チタンで被覆し、その上に０．５〜１０重量％の非熱
変色性有色顔料を被覆した、粒度が５〜６０μｍの金色
金属光沢顔料、天然雲母の表面を１６〜３９重量％の酸
化チタンで被覆した、粒度が５〜１００μｍの銀色金属
光沢顔料、天然雲母の表面を４５〜５８重量％の酸化チ
タンで被覆したメタリック色金属光沢顔料、天然雲母の
表面を４５〜５８重量％の酸化チタンで被覆し、その上
に４〜１０重量％の酸化鉄で被覆したメタリック色金属
光沢顔料、天然雲母の表面を４５〜５８重量％の酸化チ
タンで被覆し、その上に０．５〜１０重量％の非熱変色
性有色染顔料を被覆したメタリック色金属光沢顔料等が
挙げられる。更に、金属光沢顔料として、偏平ガラス片
の表面を酸化チタンで被覆した平均の厚みが１〜１０μ
ｍ、平均の粒度が５〜５００μｍの顔料を適用すること
ができ、具体的には、日本硝子繊維（株）製の商品名
「メタシャイン」品番：ＲＣＦＳＸ−５４５０ＴＳ（６
０４１）〔平均厚さ５±２μｍ、平均粒度４５０±１４
５μｍ、金色〕、ＲＣＦＳＸ−５２００ＴＳ（６０４
２）〔平均厚さ５±２μｍ、平均粒度２００±７０μ
ｍ、銀色〕、ＲＣＦＳＸ−５１４０ＴＳ（６０４３）
〔平均厚さ５±２μｍ、平均粒度１４０±４５μｍ、銀
色〕、ＲＣＦＳＸ−５０８０ＴＳ（６０４４）〔平均厚
さ５±２μｍ、平均粒度８０±３０μｍ、銀色〕、ＲＣ
ＦＳＸ−２０８０ＴＳ（６０４６）〔平均厚さ２±１μ
ｍ、平均粒度８０±３０μｍ、銀色〕、ＲＣＦＳＸ−Ｋ
１２０ＴＳ（６０４３）〔平均厚さ２０±５μｍ、平均
粒度１２０±２０μｍ、銀色〕、ＲＣＦＳＸ−５０９０
ＲＣ（８０５２）〔平均厚さ５±２μｍ、平均粒度９０
±３０μｍ、金色〕、ＲＣＦＳＸ−５０９０ＲＣ（８０
５３）〔平均厚さ５±２μｍ、平均粒度９０±３０μ
ｍ、メタリックグリーン〕、ＲＣＦＳＸ−５０９０ＲＣ
（８０６９）〔平均厚さ５±２μｍ、平均粒度９０±３
０μｍ、メタリックブルー〕、ＲＣＦＳＸ−５０９０Ｒ
Ｃ（８０７０）〔平均厚さ５±２μｍ、平均粒度９０±
３０μｍ、メタリックパープル〕、ＲＣＦＳＸ−５０９
０ＲＣ（８０７１）〔平均厚さ５±２μｍ、平均粒度９
０±３０μｍ、メタリックレッド〕等の各品番の顔料を
例示できる。 前記した偏平ガラス片の表面を酸化チタ
ンで被覆した顔料は、偏平ガラス片を芯物質として用い
ていることから、雲母の表面を酸化チタンで被覆した顔
料に比較して透明性に優れる特徴がある。The metallic luster layer is a layer in which a metallic luster pigment in which the surface of natural mica or a flat glass piece is coated with titanium oxide is fixed in a dispersed state in a binder resin, and is coated in a solid printing or solid form. Not just things, letters, numbers,
The image may be a symbol, a design, or the like. Examples of the metallic luster pigment include pigments in which the surface of natural mica is coated with titanium oxide. Specifically, the surface of natural mica is coated with 41 to 44% by weight of titanium oxide and has a particle size of 5 to 60 μm. Metallic luster pigment, natural metallic mica, coated with 30 to 38% by weight of titanium oxide, and then coated with 0.5 to 10% by weight of a non-thermochromic colored pigment, gold metal having a particle size of 5 to 60 μm Gloss pigment, silver metallic luster pigment having a particle size of 5 to 100 μm coated with 16 to 39% by weight of titanium oxide on the surface of natural mica, metallic metallic metal coated with 45 to 58% by weight of titanium oxide on the surface of natural mica Luster pigment, a metallic metallic luster pigment coated on the surface of natural mica with 45 to 58% by weight of titanium oxide and coated thereon with 4 to 10% by weight of iron oxide, 45 to 58% by weight of the surface of the natural mica Oxidation of Covered with down, metallic color metallic luster pigments coated with a non-thermochromic colored dye or pigment of 0.5 to 10% by weight and the like thereon. Furthermore, as a metallic luster pigment, the average thickness of the surface of the flat glass piece coated with titanium oxide is 1 to 10 μm.
m, a pigment having an average particle size of 5 to 500 μm can be applied. Specifically, a product name “Metashine” manufactured by Nippon Glass Fiber Co., Ltd., part number: RCFSX-5450TS (6
041) [average thickness 5 ± 2 μm, average particle size 450 ± 14
5 μm, gold], RCFSX-5200TS (604
2) [average thickness 5 ± 2 μm, average particle size 200 ± 70 μm
m, silver color], RCFSX-5140TS (6043)
[Average thickness 5 ± 2 μm, average particle size 140 ± 45 μm, silver color], RCFSX-5080TS (6044) [Average thickness 5 ± 2 μm, average particle size 80 ± 30 μm, silver color], RC
FSX-2080TS (6046) [Average thickness 2 ± 1μ
m, average particle size 80 ± 30 μm, silver color], RCFSX-K
120TS (6043) [Average thickness 20 ± 5 μm, average particle size 120 ± 20 μm, silver color], RCFSX-5090
RC (8052) [average thickness 5 ± 2 μm, average particle size 90
± 30 μm, gold], RCFSX-5090RC (80
53) [average thickness 5 ± 2 μm, average particle size 90 ± 30 μm
m, metallic green], RCFSX-5090RC
(8069) [average thickness 5 ± 2 μm, average particle size 90 ± 3
0 μm, metallic blue], RCFSX-5090R
C (8070) [average thickness 5 ± 2 μm, average particle size 90 ±
30 μm, metallic purple], RCFSX-509
0RC (8071) [average thickness 5 ± 2 μm, average particle size 9
0 ± 30 μm, metallic red]. The pigment in which the surface of the flat glass piece is coated with titanium oxide has a feature that, since the flat glass piece is used as a core material, transparency is superior to the pigment in which the surface of mica is coated with titanium oxide. .

【００１６】前記可逆熱変色性顔料、或いは金属光沢顔
料を分散状態に固着させるバインダー樹脂としては、従
来より汎用の樹脂、例えば、アイオノマー樹脂、イソブ
チレン−無水マレイン酸系共重合樹脂、アクリロニトリ
ル−アクリリックスチレン共重合樹脂、アクリロニトリ
ル−スチレン共重合樹脂、アクリロニトリル−ブタジエ
ン−スチレン共重合樹脂、アクリロニトリル塩素化ポリ
エチレン−スチレン共重合樹脂、エチレン−塩化ビニル
共重合樹脂、エチレン−酢酸ビニル共重合樹脂、エチレ
ン−酢酸ビニル−塩化ビニルグラフト共重合樹脂、塩化
ビニリデン樹脂、塩化ビニル樹脂、塩素化塩化ビニル樹
脂、塩化ビニル−塩化ビニリデン共重合樹脂、塩素化ポ
リエチレン樹脂、塩素化ポリプロピレン樹脂、ポリアミ
ド樹脂、ポリエチレンテレフタレート樹脂、ポリブチレ
ンテレフタレート樹脂、ポリカーボネート樹脂、ポリス
チレン樹脂、ハイインパクトポリスチレン樹脂、ポリプ
ロピレン樹脂、ポリメチルスチレン樹脂、ポリアクリル
酸エステル樹脂、ポリメチルメタクリレート樹脂、エポ
キシアクリレート樹脂、アルキルフェノール樹脂、ロジ
ン変性フェノール樹脂、ロジン変性アルキド樹脂、フェ
ノール樹脂変性アルキド樹脂、エポキシ樹脂変性アルキ
ド樹脂、スチレン変性アルキド樹脂、アクリル変性アル
キド樹脂、アミノアルキド樹脂、塩化ビニル−酢酸ビニ
ル樹脂、スチレン−ブタジエン樹脂、エポキシ樹脂、不
飽和ポリエステル樹脂、飽和ポリエステル樹脂、ポリウ
レタン樹脂、アルキッド樹脂、天然ゴム、ポリイソブチ
レン、ブチルゴム、ポリビニルアルキルエーテル、ロジ
ン、ロジンエステル、ロジン誘導体、ポリテルペン樹
脂、油溶性フェノール樹脂、石油系炭化水素樹脂、シェ
ラック、環化ゴム、酢酸ビニル系エマルジョン樹脂、ス
チレン−ブタジエン系エマルジョン樹脂、アクリル酸エ
ステル系エマルジョン樹脂、水溶性アルキド樹脂、水溶
性メラミン樹脂、水溶性尿素樹脂、水溶性フェノール樹
脂、水溶性エポキシ樹脂、水溶性ポリブタジエン樹脂、
酢酸セルローズ、硝酸セルローズ、エチルセルローズ等
を挙げることができ、水や有機溶剤等の適宜の溶剤に溶
解または分散させて、水性又は油性ビヒクルとして適用
される。As the binder resin for fixing the reversible thermochromic pigment or the metallic luster pigment in a dispersed state, conventionally used resins such as ionomer resin, isobutylene-maleic anhydride copolymer resin, acrylonitrile-acrylic styrene Copolymer resin, acrylonitrile-styrene copolymer resin, acrylonitrile-butadiene-styrene copolymer resin, acrylonitrile chlorinated polyethylene-styrene copolymer resin, ethylene-vinyl chloride copolymer resin, ethylene-vinyl acetate copolymer resin, ethylene-vinyl acetate -Vinyl chloride graft copolymer resin, vinylidene chloride resin, vinyl chloride resin, chlorinated vinyl chloride resin, vinyl chloride-vinylidene chloride copolymer resin, chlorinated polyethylene resin, chlorinated polypropylene resin, polyamide resin, polyethylene Terephthalate resin, polybutylene terephthalate resin, polycarbonate resin, polystyrene resin, high-impact polystyrene resin, polypropylene resin, polymethylstyrene resin, polyacrylate resin, polymethylmethacrylate resin, epoxy acrylate resin, alkylphenol resin, rosin-modified phenol resin Rosin-modified alkyd resin, phenolic resin-modified alkyd resin, epoxy resin-modified alkyd resin, styrene-modified alkyd resin, acryl-modified alkyd resin, aminoalkyd resin, vinyl chloride-vinyl acetate resin, styrene-butadiene resin, epoxy resin, unsaturated polyester Resin, saturated polyester resin, polyurethane resin, alkyd resin, natural rubber, polyisobutylene, butyl rubber, polyvinyl alcohol Ruether, rosin, rosin ester, rosin derivative, polyterpene resin, oil-soluble phenol resin, petroleum hydrocarbon resin, shellac, cyclized rubber, vinyl acetate emulsion resin, styrene-butadiene emulsion resin, acrylate emulsion resin, Water-soluble alkyd resin, water-soluble melamine resin, water-soluble urea resin, water-soluble phenol resin, water-soluble epoxy resin, water-soluble polybutadiene resin,
Examples thereof include cellulose acetate, cellulose nitrate, and ethyl cellulose, which are dissolved or dispersed in an appropriate solvent such as water or an organic solvent, and applied as an aqueous or oily vehicle.

【００１７】前記可逆感温変色層或いは金属光沢層の上
層には、紫外線吸収剤、酸化防止剤、老化防止剤、一重
項酸素消光剤、スーパーオキシドアニオン消光剤、オゾ
ン消光剤、可視光線吸収剤等の光安定剤を既述のバイン
ダー樹脂中に固着させた保護層を設けることができる。An ultraviolet absorber, an antioxidant, an antioxidant, a singlet oxygen quencher, a superoxide anion quencher, an ozone quencher, a visible light absorber are provided on the reversible thermosensitive layer or the metallic gloss layer. A protective layer in which a light stabilizer such as described above is fixed in the binder resin described above can be provided.

【００１８】前記可逆感温変色層は、携帯電話の外面の
少なくとも一部に設けられるものであり、外装ケースの
一部、ディスプレー部分、ボタン部、アンテナ部等の視
覚される個所に設けることができる。The reversible thermochromic layer is provided on at least a part of the outer surface of the mobile phone, and may be provided on a visible part such as a part of an outer case, a display part, a button part, an antenna part and the like. it can.

【００１９】[0019]

【発明の実施の形態】次に本発明の可逆感温変色性携帯
電話の実施例を、携帯電話ケースに可逆感温変色層を施
した例を示すが、本発明はこれら実施例に限定されな
い。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the reversible thermochromic mobile phone of the present invention will be described in which a reversible thermochromic layer is applied to a mobile phone case, but the present invention is not limited to these embodiments. .

【００２０】[0020]

【実施例】以下に本発明の可逆感温変色性携帯電話の実
施例を記載する。ここで、可逆熱変色性顔料は、図２〜
図４から選ばれる形態の任意の顔料を適用した。尚、実
施例中の部は、重量部を示す。Examples of the reversible thermochromic mobile phone of the present invention will be described below. Here, the reversible thermochromic pigment is shown in FIGS.
An arbitrary pigment having a form selected from FIG. 4 was applied. In addition, the part in an Example shows a weight part.

【００２１】実施例１ アクリロニトリル−ブタジエン−スチレン共重合樹脂製
の白色の携帯電話ケース上に、３０℃以上で無色、１５
℃以下でピンク色を呈する色彩記憶保持型可逆熱変色性
顔料２０部、油性アクリルポリオール樹脂４５部（不揮
発分５０％、溶剤：キシレン）、紫外線吸収剤５部、キ
シレン３０部、芳香族イソシアネート樹脂３部を均一に
分散させて得た塗料を用いて、乾燥皮膜の厚みが２０μ
ｍになるようにスプレー塗装し、７０℃で３０分間乾燥
硬化させて可逆感温変色層を設け、可逆感温変色性携帯
電話ケースを得た。得られた可逆感温変色性携帯電話ケ
ースは、１５℃以下でピンク色を呈し、３０℃以上で前
記ピンク色が消色して白色を呈し、常温（２５℃）で
は、前記様相の何れかを互変的に記憶保持する。Example 1 Colorless at 30 ° C. or higher, on a white mobile phone case made of acrylonitrile-butadiene-styrene copolymer resin.
20 parts of a color memory-retaining reversible thermochromic pigment exhibiting a pink color at a temperature of not more than 20 ° C., 45 parts of an oil-based acrylic polyol resin (non-volatile content: 50%, solvent: xylene), 5 parts of an ultraviolet absorber, 30 parts of xylene, aromatic isocyanate resin Using a coating obtained by uniformly dispersing 3 parts, the thickness of the dried film is 20 μm.
m, and dried and cured at 70 ° C. for 30 minutes to form a reversible thermochromic layer, thereby obtaining a reversible thermochromic mobile phone case. The resulting reversible thermochromic mobile phone case exhibits a pink color at 15 ° C or lower, the pink color disappears at 30 ° C or higher to exhibit white, and at room temperature (25 ° C), any of the aspects described above. Are stored alternately.

【００２２】実施例２ ポリスチレン樹脂製の蛍光ピンク色の携帯電話ケース上
に、３０℃以上で無色、２６℃以下で黒色を呈する加熱
消色型可逆熱変色性顔料３０部、油性ウレタン樹脂（不
揮発分３０％、溶剤：トルエン、酢酸ブチル）４０部、
紫外線硬化剤５部、メチルイソブチルケトン１５部、キ
シレン１５部、芳香族イソシアネート樹脂３部を均一に
分散させて得た塗料を用いて、乾燥皮膜の厚みが３０μ
ｍになるようにスプレー塗装し、７０℃で３０分間乾燥
硬化させて可逆感温変色層を設け、可逆感温変色性携帯
電話ケースを得た。次いで、前記可逆感温変色性携帯電
話ケース上に、天然雲母の表面を酸化チタンで被覆し
た、被覆率４８重量％、粒度１０〜６０μｍの金属光沢
顔料（商品名：イリオジン２１９、メルクジャパン製）
５部、油性ウレタン樹脂（不揮発分３０％、溶剤；トル
エン、酢酸ブチル）５０部、紫外線吸収剤３部、メチル
イソブチルケトン１０部、キシレン１０部、芳香族イソ
シアネート樹脂３部を均一に分散させて得た金属光沢調
塗料を用いて、スプレー塗装し、７０℃で３０分間乾燥
硬化させて金属光沢調可逆感温変色性携帯電話ケースを
得た。得られた金属光沢調可逆感温変色性携帯電話ケー
スは、２６℃以下ではメタリックバイオレット色を呈
し、３０℃以上で蛍光ピンク色を呈した。EXAMPLE 2 30 parts of a heat-decolorable reversible thermochromic pigment exhibiting a colorless color at 30 ° C. or more and a black color at 26 ° C. or less, 30 parts of an oil-based urethane resin (non-volatile) 30%, solvent: toluene, butyl acetate) 40 parts,
Using a paint obtained by uniformly dispersing 5 parts of an ultraviolet curing agent, 15 parts of methyl isobutyl ketone, 15 parts of xylene, and 3 parts of an aromatic isocyanate resin, the thickness of a dried film is 30 μm.
m, and dried and cured at 70 ° C. for 30 minutes to form a reversible thermochromic layer, thereby obtaining a reversible thermochromic mobile phone case. Next, on the reversible thermochromic mobile phone case, a surface of natural mica was coated with titanium oxide, a metal luster pigment having a coverage of 48% by weight and a particle size of 10 to 60 μm (trade name: Iriodin 219, manufactured by Merck Japan)
5 parts, 50 parts of an oil-based urethane resin (nonvolatile content: 30%, solvent; toluene, butyl acetate), 3 parts of an ultraviolet absorber, 10 parts of methyl isobutyl ketone, 10 parts of xylene, and 3 parts of an aromatic isocyanate resin are uniformly dispersed. The resulting metallic glossy paint was spray-coated and dried and cured at 70 ° C. for 30 minutes to obtain a metallic glossy reversible thermochromic mobile phone case. The obtained metallic glossy reversible thermochromic mobile phone case exhibited a metallic violet color at 26 ° C or lower and a fluorescent pink color at 30 ° C or higher.

【００２３】実施例３ ３３℃以上で無色、２９℃以下で緑色を呈する加熱消色
型可逆熱変色性顔料２０部、蛍光黄色顔料５部、ポロプ
ロピレン樹脂３００部を混合し、１８０℃でエクストル
ーダーにて溶融混合して熱変色性ポリプロピレン樹脂を
得た後、ペレット化した。次いで、前記熱変色性ポリプ
ロピレン樹脂のペレットを使用し、汎用の射出成型機を
用いて、２００℃で射出成形し、可逆感温変色性携帯電
話ケースを得た。得られた可逆感温変色性携帯電話ケー
スは、２９℃以下では緑色を呈し、３３℃以上で蛍光黄
色を呈した。Example 3 20 parts of a heat-decolorable reversible thermochromic pigment exhibiting a colorless color at 33 ° C. or more and a green color at 29 ° C. or less, 5 parts of a fluorescent yellow pigment and 300 parts of a polypropylene resin were mixed at 180 ° C. The mixture was melted and mixed with a ruder to obtain a thermochromic polypropylene resin, and then pelletized. Next, the thermochromic polypropylene resin pellets were injection molded at 200 ° C. using a general-purpose injection molding machine to obtain a reversible thermochromic mobile phone case. The obtained reversible thermochromic mobile phone case exhibited a green color at 29 ° C or lower and a fluorescent yellow color at 33 ° C or higher.

【００２４】実施例４ アクリロニトリル−ブタジエン−スチレン共重合樹脂製
の白色の携帯電話ケース上に、２９℃以上で無色、２７
℃以下で黒色を呈する加熱消色型可逆熱変色性顔料３０
部と、３５℃以上で無色、３３℃以下でピンク色を呈す
る加熱消色型可逆熱変色性顔料１５部、青色顔料３部、
塩化ビニル−酢酸ビニル共重合樹脂３０部、油性アクリ
ル樹脂（不揮発分４５％、溶剤；トルエン、酢酸エチ
ル）３０部、メチルイソブチルケトン１５部、キシレン
１５部を均一に分散させて得た塗料を用いて、乾燥皮膜
の厚みが４０μｍになるようにスプレー塗装し、４０℃
で１０分間乾燥硬化させて可逆感温変色層を設け、可逆
感温変色性携帯電話ケースを得た。得られた可逆感温変
色性携帯電話ケースは、２７℃以下で黒色を呈し、２８
〜３４℃で紫色を呈し、３５℃以上で青色を呈した。Example 4 On a white mobile phone case made of an acrylonitrile-butadiene-styrene copolymer resin, a colorless
Heat-decolorable reversible thermochromic pigment 30 that exhibits a black color at a temperature of not higher than 30 ° C.
And 15 parts of a heat-decolorable reversible thermochromic pigment exhibiting a colorless color at 35 ° C. or more and a pink color at 33 ° C. or less, 3 parts of a blue pigment,
A paint obtained by uniformly dispersing 30 parts of a vinyl chloride-vinyl acetate copolymer resin, 30 parts of an oil-based acrylic resin (a nonvolatile content of 45%, a solvent: toluene and ethyl acetate), 15 parts of methyl isobutyl ketone, and 15 parts of xylene is used. And spray-coat so that the thickness of the dried film becomes 40 μm.
And dried and cured for 10 minutes to provide a reversible thermochromic layer, thereby obtaining a reversible thermochromic mobile phone case. The obtained reversible thermochromic mobile phone case shows a black color at 27 ° C. or less,
It exhibited a purple color at -34 ° C and a blue color at 35 ° C or more.

【００２５】実施例５ ポリスチレン樹脂製の白色の携帯電話ケース上に、橙色
の油性スクリーン用インキを用いて、２７０メッシュの
スクリーン版にて「Ａ」の文字を印刷し、５０℃で５分
間乾燥させて非変色像を設けた。次いで、１８℃以上で
無色、１５℃以下で黒色を呈する加熱消色型可逆熱変色
性顔料３０部、塩化ビニル−酢酸ビニル共重合樹脂５０
部、消泡剤１部、シクロヘキサノン３０部、芳香族系炭
化水素１５部を均一に分散させて得たスクリーン印刷用
インキを用いて、１００メッシュのスクリーン版にて前
記「Ａ」の文字より大きめの星柄を前記「Ａ」の文字上
に印刷し、５０℃で５分間乾燥させて可逆感温変色像を
設け、可逆感温変色性携帯電話ケースを得た。得られた
可逆感温変色性携帯電話ケースは、１８℃以上で橙色の
「Ａ」の文字が視覚されており、１５℃以下では、前記
橙色の「Ａ」の文字上の黒色の星柄が着色し、橙色の
「Ａ」の文字が隠蔽されて黒色の星柄のみ視覚された。Example 5 The letter "A" was printed on a white mobile phone case made of a polystyrene resin using an orange oil-based screen ink on a 270 mesh screen plate and dried at 50 ° C. for 5 minutes. Then, a non-discolored image was provided. Next, 30 parts of a heat-decolorable reversible thermochromic pigment exhibiting colorlessness at 18 ° C. or higher and black at 15 ° C. or lower, vinyl chloride-vinyl acetate copolymer resin 50
Part, 1 part of defoamer, 30 parts of cyclohexanone, and 15 parts of aromatic hydrocarbon, using a screen printing ink obtained by uniformly dispersing, using a 100-mesh screen plate larger than the letter "A". Was printed on the letter “A” and dried at 50 ° C. for 5 minutes to form a reversible thermochromic image, and a reversible thermochromic mobile phone case was obtained. In the obtained reversible thermochromic mobile phone case, an orange “A” character is visually observed at 18 ° C. or higher, and at 15 ° C. or less, a black star pattern on the orange “A” character is displayed. Only the black star pattern was visible with the colored "A" letters obscured.

【００２６】実施例６ アクリロニトリル−ブタジエン−スチレン共重合樹脂製
の白色の携帯電話ケース上に、２０℃以上で無色、２０
℃未満でピンク色を呈する可逆熱変色性顔料２０部、塩
化ビニル−酢酸ビニル共重合樹脂５０部、消泡剤１部、
シクロヘキサノン３０部、芳香族系炭化水素１５部を均
一に分散させて得た加熱消色型熱変色性スクリーン印刷
用インキを用いて、１５０メッシュのスクリーン版にて
ハート柄を印刷し、５０℃で５分間乾燥硬化させて第１
のハート柄（可逆感温変色像）を得た。次いで、２５℃
以上で無色、２５℃未満でピンク色を呈する可逆熱変色
性顔料を用いた以外は、前記と同様にして第２のハート
柄を得た。更に、３０℃以上で無色、３０℃未満でピン
ク色を呈する加熱消色型可逆熱変色性顔料を用いて、前
記同様にして第３のハート柄を得た。得られた，可逆感
温変色性携帯電話ケースは、２０℃未満でピンク色を呈
する３個のハート柄を視覚でき、２０℃以上２５℃未満
ではピンク色を呈する２個のハート柄を視覚でき、２５
℃以上３０℃未満でピンク色を呈する１個のハート柄を
視覚でき、３０℃以上では３個のピンク色のハート柄
は、総て消色して白色となった。Example 6 On a white mobile phone case made of acrylonitrile-butadiene-styrene copolymer resin, colorless
20 parts of a reversible thermochromic pigment exhibiting a pink color at a temperature lower than 0 ° C, 50 parts of a vinyl chloride-vinyl acetate copolymer resin, 1 part of an antifoaming agent,
Using a heat-decoloring type thermochromic screen printing ink obtained by uniformly dispersing 30 parts of cyclohexanone and 15 parts of an aromatic hydrocarbon, a heart pattern is printed on a 150-mesh screen plate at 50 ° C. After drying and curing for 5 minutes,
(A reversible thermochromic image) was obtained. Then, at 25 ° C
A second heart pattern was obtained in the same manner as described above, except that a colorless reversible thermochromic pigment exhibiting a pink color at less than 25 ° C. was used. Further, a third heart pattern was obtained in the same manner as described above, using a heat-decolorable reversible thermochromic pigment exhibiting a colorless color at 30 ° C. or more and a pink color at less than 30 ° C. In the obtained reversible thermochromic mobile phone case, three heart patterns exhibiting a pink color can be visually observed below 20 ° C., and two heart patterns exhibiting a pink color can be visually observed when the temperature is 20 ° C. or more and less than 25 ° C. , 25
One heart pattern exhibiting a pink color was visible at a temperature of 30 ° C. or more and less than 30 ° C., and at 30 ° C. or more, all three pink heart patterns were decolorized and turned white.

【００２７】実施例７ アクリロニトリル−ブタジエン−スチレン共重合樹脂製
の白色の携帯電話ケース上に、３０℃以上で無色、１５
℃以下でピンク色を呈する色彩記憶型可逆熱変色性顔料
２０部、ウレタン樹脂エマルジョン５０部、消泡剤１
部、増粘剤５部、水１０部、エチレンイミン系架橋剤５
部を均一に分散させて得た熱変色性スクリーン印刷用イ
ンキを用いて、１５０メッシュのスクリーン版にて
「Ａ」の文字を印刷し、７０℃で５分間乾燥硬化させて
可逆加温変色像を設けた。次いで、油性アクリルポリオ
ール樹脂（不揮発分５０％、溶剤：芳香族系炭化水素、
シクロヘキサノン）５０部、消泡剤２部、紫外線吸収剤
３部、シクロヘキサノン１０部、芳香族系炭化水素１０
部、芳香族イソシアネート樹脂５部を均一に分散させて
得た油性スクリーン印刷用インキを用いて、１２０メッ
シュのスクリーン版にてベタ印刷し、７０℃で３０分間
乾燥硬化させて保護層を形成した。得られた可逆感温変
色性携帯電話ケースは、１５℃以下でピンク色の「Ａ」
の文字を視覚させ、常温（２５℃）に戻しても前記様相
を視覚させた。３０℃以上では前記ピンク色の「Ａ」の
文字が消色して全面白色となり、常温（２５℃）に戻し
ても白色の様相を保持しており、再び、１５℃以下にす
ると前記ピンク色の「Ａ」の文字が視覚された。Example 7 On a white mobile phone case made of an acrylonitrile-butadiene-styrene copolymer resin, colorless
20 parts of a color storage type reversible thermochromic pigment exhibiting a pink color at a temperature of not more than 20 ° C., 50 parts of a urethane resin emulsion, and an antifoaming agent 1
Parts, thickener 5 parts, water 10 parts, ethyleneimine crosslinking agent 5
Using a thermochromic screen printing ink obtained by uniformly dispersing the parts, the letter “A” is printed on a 150-mesh screen plate, dried and cured at 70 ° C. for 5 minutes, and then subjected to a reversible heating discoloration image. Was provided. Then, an oil-based acrylic polyol resin (non-volatile content 50%, solvent: aromatic hydrocarbon,
Cyclohexanone) 50 parts, defoamer 2 parts, ultraviolet absorber 3 parts, cyclohexanone 10 parts, aromatic hydrocarbon 10
Parts, and 5 parts of an aromatic isocyanate resin were uniformly dispersed, and solid printing was performed on a 120-mesh screen plate using an oil-based screen printing ink, and dried and cured at 70 ° C. for 30 minutes to form a protective layer. . The resulting reversible thermochromic mobile phone case has a pink “A” at 15 ° C or less.
Was visually observed, and the above aspect was visually observed even when the temperature was returned to room temperature (25 ° C.). At 30 ° C. or higher, the pink letter “A” disappears and becomes entirely white, and retains its white appearance even when returned to room temperature (25 ° C.). The letter “A” was visually recognized.

【００２８】実施例８ 厚さ０．１ｍｍの白色上質紙上に、市販の一般色インキ
を用いて写真調の犬柄を３cm×４cmになるようオフセッ
ト印刷した。次いで、３３℃以上で無色、３０℃以下で
黒色を呈する加熱消色型可逆熱変色性顔料２０部、エチ
レン−酢酸ビニル共重合樹脂エマルジョン５０部、消泡
剤２部、増粘剤５部、水１０部を均一に分散させて得た
熱変色性スクリーン印刷用インキを用いて、１００メッ
シュのスクリーン版にて前記犬柄上にベタ印刷して、５
０℃で５分間乾燥硬化させて可逆熱変色層を得た。次い
で、油性ウレタン樹脂（不揮発分３０％、溶剤：トルエ
ン、酢酸ブチル）５０部、紫外線吸収剤３部、シクロヘ
キサノン１５部、芳香族系炭化水素１０部、消泡剤２
部、芳香族イソシアネート樹脂３部を均一に分散させて
得たスクリーン印刷用トップコートインキを１５０メッ
シュのスクリーン版にて前記可逆熱変色層と同じ大きさ
にてベタ印刷し、７０℃で３０分間乾燥硬化させて保護
層を形成した。次いで、前記上質紙の裏面に粘着剤を塗
工し、３５０ｇｆ／１０ｍｍの粘着力をもつ熱変色性粘
着シールを得た。銀色のポリスチレン樹脂製の携帯電話
ケース上に、前記熱変色性粘着シールを任意の大きさに
裁断して、前記携帯電話ケースに貼りつけ、可逆感温変
色性携帯電話ケースを得た。得られた可逆感温変色性携
帯電話ケースは、３０℃以下で黒色を呈し、３３℃以上
で前記黒色が消色し、写真調の犬柄が視覚された。Example 8 A photographic-like dog pattern was offset-printed on white high-quality paper having a thickness of 0.1 mm using a commercially available general color ink so as to have a size of 3 cm × 4 cm. Next, 20 parts of a heat-decolorable reversible thermochromic pigment exhibiting colorlessness at 33 ° C. or higher and black at 30 ° C. or lower, 50 parts of an ethylene-vinyl acetate copolymer resin emulsion, 2 parts of a defoamer, 5 parts of a thickener, Using a thermochromic screen printing ink obtained by uniformly dispersing 10 parts of water, solid printing was performed on the dog pattern with a 100 mesh screen plate to obtain 5
After drying and curing at 0 ° C. for 5 minutes, a reversible thermochromic layer was obtained. Next, 50 parts of an oil-based urethane resin (30% of nonvolatile content, solvent: toluene, butyl acetate), 3 parts of an ultraviolet absorber, 15 parts of cyclohexanone, 10 parts of an aromatic hydrocarbon, and 2 parts of an antifoaming agent
Parts, 3 parts of an aromatic isocyanate resin are uniformly dispersed, and the top coat ink for screen printing is solid-printed on a 150-mesh screen plate in the same size as the reversible thermochromic layer, at 70 ° C. for 30 minutes. After drying and curing, a protective layer was formed. Next, an adhesive was applied to the back surface of the high-quality paper to obtain a thermochromic adhesive seal having an adhesive strength of 350 gf / 10 mm. The thermochromic pressure-sensitive adhesive seal was cut into an arbitrary size on a silver polystyrene resin cell phone case, and was adhered to the cell phone case to obtain a reversible thermochromic cell phone case. The obtained reversible thermochromic mobile phone case exhibited a black color at 30 ° C. or lower, and the black color was erased at 33 ° C. or higher, and a photograph-like dog pattern was visually observed.

【００２９】実施例９ 厚さ５０μｍのポリエチレンテレフタレートフィルム表
面上に、市販の蛍光ピンク色のスクリーン印刷用インキ
を用いて、２７０メッシュのスクリーン版にて「Ｉ Ｌ
ＯＶＥ ＹＯＵ」の文字を印刷し、５０℃で２分間乾燥
させた。次いで、３４℃以上で無色、１４℃以下で黒色
を呈する色彩記憶型可逆熱変色性顔料３０部、アクリル
樹脂エマルジョン５０部、消泡剤１部、増粘剤５部、水
１０部、ブロックイソシアネート系架橋剤５部を均一に
分散させて得たスクリーン印刷用インキを用いて、１０
０メッシュのスクリーン版にて前記「Ｉ ＬＯＶＥ Ｙ
ＯＵ」の文字より大きめにベタ印刷し、１２０℃で５分
間乾燥硬化させて可逆感温変色層を形成した。次いで、
鱗片状ガラス片の表面を酸化チタンで被覆したメタリッ
クパープル色金属光沢顔料（日本硝子繊維（株）製、商
品名：ＲＣＦＳＸ−５０８０ＴＳ（８０７０）、平均の
厚み５±２μｍ、平均粒度９０±３０μｍ）５部、油性
アクリルポリオール樹脂（不揮発分５０％、溶剤：芳香
族系炭化水素、シクロヘキサノン）５０部、紫外線吸収
剤３部、消泡剤１部、芳香族系炭化水素１５部、シクロ
ヘキサノン１５部、芳香族イソシアネート樹脂５部を均
一に分散させて得た金属光沢調スクリーン印刷用インキ
を用いて、６０メッシュのスクリーン版にて前記可逆感
温変色層と同じ大きさにてベタ印刷し、７０℃で３０分
間乾燥硬化させて金属光沢層を形成した。次いで、厚さ
２０μｍの透明ポリプロピレンフィルムの裏面に粘着剤
を塗工し、３５０ｇｆ／１０ｍｍの粘着力をもつ透明ポ
リプロピレンフィルムを、前記ポリエチレンテレフタレ
ートフィルム上の全面に貼り合わせて保護層を形成し
た。次いで、前記ポリエチレンテレフタレートフィルム
の裏面に粘着剤を塗工し、３９０ｇｆ／１０ｍｍの粘着
力をもつ金属光沢調熱変色性粘着シールを得た。次い
で、前記金属光沢調熱変色性粘着シールを任意の大きさ
に裁断し、白色のアクリロニトリル−ブタジエン−スチ
レン共重合樹脂製の携帯電話ケース上に貼り付け、可逆
感温変色性携帯電話ケースを得た。得られた可逆感温変
色性携帯電話ケースは、１４℃以下でメタリックパープ
ル色を呈し、常温（２５℃）に戻しても前記様相を視覚
させ、３４℃以上で前記メタリックパープル色が消色し
て、蛍光ピンク色の「Ｉ ＬＯＶＥ ＹＯＵ」の文字が
視覚される。前記状態の携帯電話ケースを常温（２５
℃）に戻しても前記様相を保持しており、再び、１４℃
以下にすると前記メタリックパープル色が視覚された。Example 9 On a 50 μm-thick polyethylene terephthalate film surface, a commercially available fluorescent pink screen printing ink was used to prepare “IL” using a 270 mesh screen plate.
"OVE YOU" was printed and dried at 50 ° C. for 2 minutes. Subsequently, 30 parts of a color memory type reversible thermochromic pigment exhibiting colorlessness at 34 ° C. or higher and black at 14 ° C. or lower, 50 parts of an acrylic resin emulsion, 1 part of an antifoaming agent, 5 parts of a thickener, 10 parts of water, and blocked isocyanate Using a screen printing ink obtained by uniformly dispersing 5 parts of a system crosslinking agent, 10
"I LOVE Y" on the 0 mesh screen version
The solid print was made larger than the letters “OU” and dried and cured at 120 ° C. for 5 minutes to form a reversible thermosensitive color-change layer. Then
Metallic purple metallic luster pigment (Trade name: RCFSX-5080TS (8070), manufactured by Nippon Glass Fiber Co., Ltd., average thickness 5 ± 2 μm, average particle size 90 ± 30 μm) in which the surface of a glass flake is coated with titanium oxide 5 parts, oil-based acrylic polyol resin (non-volatile content 50%, solvent: aromatic hydrocarbon, cyclohexanone) 50 parts, ultraviolet absorber 3 parts, defoamer 1 part, aromatic hydrocarbon 15 parts, cyclohexanone 15 parts, Using a metal glossy screen printing ink obtained by uniformly dispersing 5 parts of an aromatic isocyanate resin, solid printing was performed on a 60-mesh screen plate in the same size as the reversible thermochromic layer, and 70 ° C. For 30 minutes to form a metallic gloss layer. Next, an adhesive was applied to the back surface of the transparent polypropylene film having a thickness of 20 μm, and a transparent polypropylene film having an adhesive force of 350 gf / 10 mm was stuck on the entire surface of the polyethylene terephthalate film to form a protective layer. Next, an adhesive was applied to the back surface of the polyethylene terephthalate film to obtain a metallic glossy thermochromic adhesive seal having an adhesive force of 390 gf / 10 mm. Next, the metallic glossy thermochromic pressure-sensitive adhesive seal was cut into an arbitrary size, and pasted on a white acrylonitrile-butadiene-styrene copolymer resin cell phone case to obtain a reversible thermochromic cell phone case. Was. The obtained reversible thermochromic mobile phone case exhibits a metallic purple color at 14 ° C. or lower, makes the above appearance visible even when returned to room temperature (25 ° C.), and loses the metallic purple color at 34 ° C. or higher. Then, the characters of the fluorescent pink “I LOVE YOU” are visually recognized. Put the mobile phone case in the above state at room temperature (25
° C), the appearance is maintained even after returning to 14 ° C.
In the following, the metallic purple color was visually recognized.

【００３０】実施例１０ 厚み４５μｍの熱収縮性ポリエチレンテレフタレートフ
ィルム上に、２５℃以上で無色、２０℃以下で赤色を呈
する加熱消色型可逆熱変色性顔料２０部、アクリル樹脂
エマルジョン５０部、消泡剤３部、水１０部を均一に分
散させて得た熱変色性グラビア印刷用インキを用いて、
グラビア印刷にてベタ印刷し乾燥硬化させて熱変色性熱
収縮シートを得た。次いで、前記熱変色性熱収縮性シー
トの端部を、印刷面が内側になるように円筒状に貼り合
わせた後、薄紫色のポリスチレン樹脂製携帯電話ケース
のディスプレー個所に加熱収縮加工を施し、可逆感温変
色性携帯電話ケースを得た。得られた携帯電話ケース
は、ディスプレー個所にある熱変色性熱収縮性シートに
よって、２０℃以下では赤色を呈し、２５℃以上で赤色
が消色し、携帯電話のディスプレー個所の文字及び図柄
が視覚された。再び、２０℃以下にすると赤色を呈し
て、ディスプレー個所の文字及び図柄が隠蔽された。繰
り返しの使用によっても熱変色機能を損なうことなく、
前記様相を繰り返し、装飾性を満足しうる可逆感温変色
性携帯電話が得られた。Example 10 On a heat-shrinkable polyethylene terephthalate film having a thickness of 45 μm, 20 parts of a heat-decolorable reversible thermochromic pigment exhibiting a colorless color at 25 ° C. or more and a red color at 20 ° C. or less, 50 parts of an acrylic resin emulsion, Using a thermochromic gravure printing ink obtained by uniformly dispersing 3 parts of a foaming agent and 10 parts of water,
Solid printing by gravure printing and drying and curing were performed to obtain a thermochromic heat-shrinkable sheet. Then, after bonding the end of the thermochromic heat-shrinkable sheet in a cylindrical shape such that the printing surface is on the inside, heat-shrink processing is performed on the display portion of the light purple polystyrene resin mobile phone case, A reversible thermochromic mobile phone case was obtained. The obtained mobile phone case shows a red color at a temperature of 20 ° C. or less, and loses the red color at a temperature of 25 ° C. or more due to the thermochromic heat-shrinkable sheet at the display location. Was done. Again, when the temperature was lowered to 20 ° C. or lower, the display turned red, and characters and designs at the display location were hidden. Without impairing the thermal discoloration function even with repeated use,
By repeating the above-mentioned aspects, a reversible thermochromic mobile phone capable of satisfying decorativeness was obtained.

【００３１】[0031]

【発明の効果】本発明の携帯電話は、温度に依存して色
変化し、示温機能を備えていると共に、色変化による視
覚効果、装飾効果、デザインの特異性、多彩化等に寄与
し、差別化された商品性を備えている。可逆熱変色性顔
料として、ヒステリシス幅が３℃未満の系にあっては、
熱変色後において、速やかに元の色彩に復帰し、ヒステ
リシス幅が概ね４〜８℃の系にあっては、緩徐に元の色
彩に復帰して視覚効果を高め、ヒステリシス幅が８℃を
超える大きな系にあっては、色彩記憶機能が発現され、
変色に要した熱又は冷熱を取り去った後にあっても、変
色前後の色彩を互変的に記憶保持して、常温域で択一的
に視覚でき、更には、加熱発色型の系にあっては常態で
は不可視の像を、擦過等による加熱によって現出させる
ことができる。更には、前記可逆感温変色層上に金属光
沢層を積層させた系では、金属光沢色の特異の色彩を視
覚させることができると共に耐光堅牢性を顕著に向上さ
せており、持久性を満たす。The mobile phone of the present invention changes its color depending on the temperature and has a temperature indicating function, and also contributes to visual effects, decorative effects, design peculiarities, diversification, etc. by the color change. It has differentiated merchantability. In a system having a hysteresis width of less than 3 ° C. as a reversible thermochromic pigment,
After thermal discoloration, the color quickly returns to the original color. In a system with a hysteresis width of approximately 4 to 8 ° C, the color gradually returns to the original color to enhance the visual effect, and the hysteresis width exceeds 8 ° C. In a large system, the color memory function is expressed,
Even after removing the heat or cold required for discoloration, the colors before and after discoloration are alternately stored and retained, and can be selectively viewed in the normal temperature range. Can make an image which is invisible in a normal state appear by heating by rubbing or the like. Further, in a system in which a metallic gloss layer is laminated on the reversible thermochromic layer, a unique color of the metallic gloss color can be visually recognized, and the light fastness is remarkably improved, and the durability is satisfied. .

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の可逆感温変色性携帯電話の一実施例を
示す斜視図である。FIG. 1 is a perspective view showing one embodiment of a reversible thermochromic mobile phone of the present invention.

【図２】本発明に適用する可逆熱変色性顔料の一例を示
す、（イ）外観、及び（ロ）断面の拡大説明図である。FIG. 2 is an enlarged explanatory view of (a) an external appearance and (b) a cross section showing an example of a reversible thermochromic pigment applied to the present invention.

【図３】本発明に適用する可逆熱変色性顔料の他の例を
示す、（イ）外観、及び（ロ）断面の拡大説明図であ
る。FIG. 3 is an enlarged explanatory view of (a) the appearance and (b) a cross section showing another example of the reversible thermochromic pigment applied to the present invention.

【図４】本発明に適用する可逆熱変色性顔料の他の例を
示す、（イ）外観、及び（ロ）断面の拡大説明図であ
る。FIG. 4 is an enlarged explanatory view of (a) the appearance and (b) a cross section showing another example of the reversible thermochromic pigment applied to the invention.

【図５】加熱消色型の熱変色性組成物の変色挙動を示す
グラフである。FIG. 5 is a graph showing the discoloration behavior of a heat-decolorable thermochromic composition.

【図６】色彩記憶型の熱変色性組成物の変色挙動を示す
グラフである。FIG. 6 is a graph showing the color change behavior of a color memory type thermochromic composition.

【図７】加熱発色型の熱変色性組成物の変色挙動を示す
グラフである。FIG. 7 is a graph showing the discoloration behavior of a thermochromic composition of a heat coloring type.

【符号の説明】[Explanation of symbols]

１ 可逆感温変色性携帯電話 １１ 可逆感温変色層 ２ 可逆熱変色性顔料 ２１ 熱変色性組成物 ２２ 壁膜 ２３ 窪み Reference Signs List 1 reversible thermochromic mobile phone 11 reversible thermochromic layer 2 reversible thermochromic pigment 21 thermochromic composition 22 wall film 23 depression

Claims (10)

【特許請求の範囲】[Claims] 【請求項１】 携帯電話の外面の少なくとも一部に、
（イ）電子供与性呈色性有機化合物、（ロ）電子受容性
化合物、及び（ハ）前記両者の呈色反応の生起温度を決
める反応媒体を含む熱変色性組成物を内包させたマイク
ロカプセル形態の可逆熱変色性顔料が、バインダー樹脂
を介して分散状態に固着された可逆感温変色層を設けた
ことを特徴とする可逆感温変色性携帯電話。At least a part of an outer surface of a mobile phone,
Microcapsules enclosing a thermochromic composition containing (a) an electron-donating color-forming organic compound, (b) an electron-accepting compound, and (c) a reaction medium for determining the temperature at which the color reaction of both occurs. A reversible thermochromic mobile phone comprising a reversible thermochromic pigment in which a reversible thermochromic pigment in a form is fixed in a dispersed state via a binder resin. 【請求項２】 携帯電話の外装ケースを構成する、少な
くとも一部のプラスチック部材中に、（イ）電子供与性
呈色性有機化合物、（ロ）電子受容性化合物、及び
（ハ）前記両者の呈色反応の生起温度を決める反応媒体
を含む熱変色性組成物を内包させたマイクロカプセル形
態の可逆熱変色性顔料が、分散状態に固着されて可逆感
温変色層が形成されてなることを特徴とする可逆感温変
色性携帯電話。2. An at least part of a plastic member constituting an outer case of a mobile phone, wherein (a) an electron-donating color-forming organic compound, (b) an electron-accepting compound, and (c) both of them. The reversible thermochromic pigment in the form of microcapsules containing a thermochromic composition containing a reaction medium that determines the temperature at which the color reaction occurs is fixed in a dispersed state to form a reversible thermochromic layer. Characteristic reversible thermochromic mobile phone. 【請求項３】 携帯電話の外面の少なくとも一部に、
（イ）電子供与性呈色性有機化合物、（ロ）電子受容性
化合物、及び（ハ）前記両者の呈色反応の生起温度を決
める反応媒体を含む熱変色性組成物を内包させたマイク
ロカプセル形態の可逆熱変色性顔料が、バインダー樹脂
を介して分散状態に固着された可逆感温変色層を備え
た、粘着性シートを貼り付けてなることを特徴とする可
逆感温変色性携帯電話。3. At least a part of the outer surface of the mobile phone,
Microcapsules enclosing a thermochromic composition containing (a) an electron-donating color-forming organic compound, (b) an electron-accepting compound, and (c) a reaction medium for determining the temperature at which the color reaction of both occurs. A reversible thermochromic mobile phone comprising a reversible thermochromic pigment having a reversible thermochromic layer fixed in a dispersed state via a binder resin and having an adhesive sheet attached thereto. 【請求項４】 携帯電話の外面の少なくとも一部に、
（イ）電子供与性呈色性有機化合物、（ロ）電子受容性
化合物、及び（ハ）前記両者の呈色反応の生起温度を決
める反応媒体を含む熱変色性組成物を内包させたマイク
ロカプセル形態の可逆熱変色性顔料が、バインダー樹脂
を介して分散状態に固着された可逆感温変色層を備え
た、熱収縮性シートを装着してなることを特徴とする可
逆感温変色性携帯電話。4. At least a part of the outer surface of the mobile phone,
Microcapsules enclosing a thermochromic composition containing (a) an electron-donating color-forming organic compound, (b) an electron-accepting compound, and (c) a reaction medium for determining the temperature at which the color reaction of both occurs. Thermochromic mobile phone characterized in that it is provided with a heat-shrinkable sheet provided with a reversible thermochromic layer in which a reversible thermochromic pigment in a form is fixed in a dispersed state via a binder resin. . 【請求項５】 可逆熱変色性顔料は、発色状態からの加
熱により消色し、消色状態からの冷却により発色する加
熱消色型、発色状態又は消色状態を特定温度域で互変的
に記憶保持する色彩記憶保持型、又は消色状態からの加
熱により発色し、発色状態からの降温により消色状態に
復する加熱発色型の何れかより選ばれる、請求項１乃至
４の何れか一項に記載の可逆感温変色性携帯電話。5. A reversible thermochromic pigment, which is decolorized by heating from a color-developing state and changes color by heating from a decolored state to a heat-decolorable type, a color-developed state or a decolored state in a specific temperature range. 5. A color storage / retention type that stores and retains a color, or a heating / coloring type that develops a color by heating from a decolored state and returns to a decolored state by lowering the temperature from the colored state. The reversible thermochromic mobile phone according to claim 1. 【請求項６】 可逆熱変色性顔料は、窪みを有する非円
形断面形状の最大外径の平均値が０．１〜３０μｍの範
囲にあるマイクロカプセル形態の顔料である請求項１乃
至５の何れか一項に記載の可逆感温変色性携帯電話。6. The pigment according to claim 1, wherein the reversible thermochromic pigment is a pigment in the form of microcapsules in which the average value of the maximum outer diameter of the non-circular cross-sectional shape having a depression is in the range of 0.1 to 30 μm. The reversible thermochromic mobile phone according to claim 1. 【請求項７】 可逆感温変色層上には、天然雲母又は偏
平ガラス片の表面を酸化チタンで被覆した金属光沢顔料
をバインダー樹脂中に分散状態に固着させた金属光沢層
が積層されてなる請求項１乃至６の何れか一項に記載の
可逆感温変色性携帯電話。7. On the reversible thermochromic layer, a metallic gloss layer in which a metallic gloss pigment in which natural mica or a flat glass piece is coated with titanium oxide is fixed in a binder resin in a dispersed state is laminated. The reversible thermochromic mobile phone according to any one of claims 1 to 6. 【請求項８】 可逆熱変色性顔料として、相異なる変色
点を有する複数の可逆熱変色性顔料が適用されてなる、
請求項１乃至７の何れか一項に記載の可逆感温変色性携
帯電話。8. A plurality of reversible thermochromic pigments having different discoloration points are applied as the reversible thermochromic pigment,
The reversible thermochromic mobile phone according to any one of claims 1 to 7. 【請求項９】 可逆感温変色層の上層又は下層に、非熱
変色層が配されてなる請求項１乃至８の何れか一項に記
載の可逆感温変色性携帯電話。9. The reversible thermochromic mobile phone according to claim 1, wherein a non-thermochromic layer is disposed above or below the reversible thermochromic layer. 【請求項１０】 相異なる温度で変色する、複数の可逆
感温変色層が配設されてなる請求項１乃至９の何れか一
項に記載の可逆感温変色性携帯電話。10. The reversible thermochromic mobile phone according to claim 1, further comprising a plurality of reversible thermochromic layers that discolor at different temperatures.