JP4088029B2 - Organic powder-containing solid powder cosmetics - Google Patents

Organic powder-containing solid powder cosmetics Download PDF

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JP4088029B2
JP4088029B2 JP2000271219A JP2000271219A JP4088029B2 JP 4088029 B2 JP4088029 B2 JP 4088029B2 JP 2000271219 A JP2000271219 A JP 2000271219A JP 2000271219 A JP2000271219 A JP 2000271219A JP 4088029 B2 JP4088029 B2 JP 4088029B2
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powder
solid powder
weight
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organic
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JP2002080325A (en
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叙芳 鈴木
一弘 飯高
洋平 金子
美宗 野々村
明生 樫本
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Kao Corp
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Kao Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、塗布時のつき、のび、しっとり感及び透明性に優れ、外力による割れが少ない固形粉末化粧料に関する。
【0002】
【従来の技術】
ファンデーション、アイシャドウ等の固形粉末化粧料は、一般に、容器に原料組成物を充填後圧縮して固化させるプレス成型法により製造されている。しかし一般の固形粉末化粧料は、油剤の配合量が比較的少ないため粉体間結合力が弱く、上記プレス成型法では高いプレス圧が必要になる。その結果得られた成型品は一般的に硬く、粉っぽい感触になる。
【0003】
これらを解決するため、粉体に弾性率が200kg/cm2 以下の皮膜形成性高分子及び揮発性溶剤を混合した後、揮発性溶剤を揮発させて固形化する方法(特開2000-80015号)が提案されている。しかし、この方法により得られた固形粉末化粧料は、つき、のび、しっとり感等の点で十分満足できるものではなかった。
【0004】
【発明が解決しようとする課題】
本発明の目的は、塗布時のつき、のび、しっとり感及び透明性に優れ、外力による割れが少ない固形粉末化粧料を提供することにある。
【0005】
【課題を解決するための手段】
本発明者らは、特定の強度を有する有機粉体を用い、硬度、空隙率及び耐衝撃性値を特定の数値とすれば、上記目的とする固形粉末化粧料が得られることを見出した。
【0006】
本発明は、平均圧壊強度0.2〜1kg/mm2 アシル化タウリン多価金属塩からなる有機粉体30〜90重量%並びに弾性率が1〜100kg/cm2の皮膜形成性高分子を含有し、硬度がアスカーゴム硬度計C1L型で10〜75であり、空隙率が0.4〜0.7で、かつ耐衝撃性値(成型品を50cmの高さから厚み25mmのラワン材ベニヤ板上にくり返し落下させたとき異常が生じるまでの回数)が5以上である固形粉末化粧料を提供するものである。
【0007】
【発明の実施の形態】
本発明で用いられる有機粉体は、平均強度0.2〜1kg/mm2 、好ましくは0.3〜0.6kg/mm2 のものである。平均強度が0.2kg/mm2 未満のものでは、のび性能が損なわれ、1kg/mm2 を超えると、つき、しっとり感が悪くなる。ここで、平均強度は、粉体粒子1つを上部圧子により荷重を加え、粒子が破壊されたときの荷重と、その粒子の粒径から求められるものであり、これを10個の粒子について繰り返したときの平均値を求めたものである。
本発明において、平均強度の測定は、島津微少圧縮試験機モデル;MCTM−200(島津製作所社製)を用いて、取扱説明書に準じて行ない、次式(1)により求めた。ここで、dは粉体の粒径を示す。
【0008】
St(強度) = 2.8P(破壊荷重) / πd2 (1)
【0009】
このような有機粉体としては、例えば脂肪族アミドスルホン酸多価金属塩、アシル化アミノ酸多価金属塩、脂肪族エステルスルホン酸多価金属塩、アルキルアミノメチル硫酸エステル多価金属塩等が挙げられる。これらのうち、分子中にアルキル基及びアミド基を有するものが好ましく、脂肪族アミドスルホン酸多価金属塩、アシル化アミノ酸多価金属塩が好ましく、特にアシル化タウリン多価金属塩が好ましい。分子中のアルキル基は、炭素数7〜21、特に9〜17のものが好ましい。また、多価金属原子としては、例えばカルシウム、マグネシルム、バリウム、アルミニウム、亜鉛、鉄、チタン、ジルコニウム等が挙げられ、カルシウム、マグネシウム、バリウム等のアルカリ土類金属が好ましく、特にカルシウムが好ましい。
【0010】
これらの有機粉体は、そのまま、又は表面を疎水化処理して用いることができる。疎水化処理は、例えばシリコーン油、脂肪酸金属塩、アルキルリン酸、アルキルリン酸のアルカリ金属塩又はアミン塩、N−モノ長鎖(炭素数8〜22)脂肪族アシル塩基性アミノ酸、パーフルオロアルキル基を有するフッ素化合物等の疎水化処理剤を用い、常法により行なうことができる。疎水化処理剤としては、特にフッ素化合物が好ましい。粉体に対する疎水化処理剤の処理量は、0.05〜20重量%、特に2〜10重量%であるのが好ましい。
【0011】
有機粉体は、1種以上を用いることができ、全組成中に1〜90重量%、特に5〜70重量%、更に10〜60重量%含有させるのが好ましい。
【0012】
本発明の固形粉末化粧料は、硬度がアスカーゴム硬度計C1L型で75以下、特に10〜75であり、空隙率が0.4以上、特に0.45〜0.7であり、耐衝撃性値が5以上、特に5を超え、更に7以上であることが使用感及び割れの点で優れるので好ましい。また、固形粉末化粧料がファンデーションである場合には、硬度は10〜70、特に10〜65であるのがより好ましく、アイシャドウの場合には、硬度が30〜75、特に50〜75であるのがより好ましい。
【0013】
ここで、硬度は、成型品の硬度を直接アスカーゴム硬度計C1L型で測定する。本発明においては、直径54mm、深さ4mmのアルミ製中皿に試料を充填、成型、乾燥したもので測定した。また、空隙率は、成型品の重量、体積及び粉体バルクの真比重を測定し、次式(2)により求めた。
【0014】
【数1】

Figure 0004088029
【0015】
ここで、成型品とは、成型、乾燥後の化粧料をいう。また粉体バルクとは、成型前の粉体混合物を乾燥したもので、その真比重は、島津製作所社製アキュピック1330型を用いて測定した。
【0016】
耐衝撃性は、上記成型品を、50cmの高さから、厚み25mmのラワン材ベニヤ板上にくり返し落下させ、かけや割れなどの異常が生じるまでの回数を評価したものである。
【0017】
本発明は、上記の条件を満足する固形粉末化粧料が所望の性能を示すことを見出したものであるが、前記の有機粉体とともに、弾性率が200kg/cm2以下の皮膜形成性高分子を含有するのが好ましい。
【0018】
ここで用いる皮膜形成性高分子としては、弾性率が200kg/cm2以下、特に1〜100kg/cm2であるものが好ましい。弾性率が200kg/cm2を超えるものを用いた場合は、製品がやわらかさやなめらかさ等に劣り、使用感が悪くなる。
本発明において、弾性率は以下のようにして測定した。
すなわち、まず各皮膜形成性高分子の10重量%溶液又は分散液を直径5cmのテフロン製シャーレに10g量り取り、5〜10日間自然乾燥して得られた皮膜(厚さ0.3〜0.5mm)を、縦15mm、横5mmの短冊状に切り、測定用試料とした。この試料を、25℃、相対湿度30%に24時間以上放置した後、動的粘弾性測定装置(UBM社製、レオスペクトラーDVE−V4)の引っ張り試験用ジグに固定し、加振周波数10Hz、振幅10μmの条件で測定した。
【0019】
このような皮膜形成性高分子としては、分子量が10,000〜1,000,000程度のものが好ましく、例えば重合性二重結合を有する単量体の1種以上を重合させて得られる高分子や、ポリ(N−アシルアルキレンイミン)変性シリコーン(特開平5−112423号、特開平7−133352号、特開平10−95705号)、ビニル・シリコーンブロックポリマー(特開平11−100307号)などが挙げられる。
【0020】
重合性二重結合を有する単量体としては、例えばアクリル酸、メタクリル酸、マレイン酸、フマール酸等のエチレン性不飽和カルボン酸;ヒドロキシエチル(メタ)アクリレート、ポリエチレングリコールモノ(メタ)アクリレート等の不飽和カルボン酸エステル;(メタ)アクリルアミド、N−ダイアセトンアクリルアミド等の不飽和カルボン酸アミド;アミノエチル(メタ)アクリレート、N,N−ジメチルアミノエチル(メタ)アクリレート、N,N−ジエチルアミノエチル(メタ)アクリレート、N,N,N−トリメチルアミノエチル(メタ)アクリレート等のアミノ基含有不飽和カルボン酸エステル又はその塩などの親水性単量体;スチレン、α−メチルスチレン、クロロスチレン、アルキルスチレン等の芳香族ビニル化合物;メチル(メタ)アクリレート、エチル(メタ)アクリレート、プロピル(メタ)アクリレート、ブチル(メタ)アクリレート、2−エチルヘキシル(メタ)アクリレート、t−ブチル(メタ)アクリレート、シクロヘキシル(メタ)アクリレート等のアクリル酸エステル及びメタクリル酸エステル;アクリロニトリル、メタクリロニトリル等のシアン化ビニル化合物;酢酸ビニル等のビニルエステル;塩化ビニル、塩化ビニリデン等のハロゲン化ビニル;トリフルオロエチルメタクリレート、2,2,3,3−テトラフルオロプロピルメタクリレート、2,2,3,3,4,4−ヘキサフルオロブチルメタクリレート、パーフルオロオクチルメタクリレート、パーフルオロオクチルアクリレート等のフッ素系単量体;下記の一般式(1)〜(5)で表わされるようなシリコーンマクロモノマーなどの疎水性単量体が挙げられる。
【0021】
【化1】
Figure 0004088029
【0022】
〔上記式中、R1は水素原子又はメチル基を示し、R2〜R10はそれぞれ炭素数1〜6のアルキル基、炭素数1〜6のアルコキシ基又はフェニル基を示し、nは1〜500の数を示す〕
【0023】
また、ポリ(N−アシルアルキレンイミン)変性シリコーンとしては、分子内に式(6)
【0024】
【化2】
Figure 0004088029
【0025】
(式中、R11は水素原子、炭素数1〜22のアルキル基、シクロアルキル基、アラルキル基、アリール基のいずれかを示し、mは2又は3である)
で表される繰り返し単位からなるポリ(N−アシルアルキレンイミン)のセグメントと、オルガノポリシロキサンのセグメントを有し、オルガノポリシロキサンのセグメントの末端に、又は側鎖として、ヘテロ原子を含むアルキレン基を介して、前記式(6)で表される繰り返し単位からなるポリ(N−アシルアルキレンイミン)のセグメントが結合しており、該ポリ(N−アシルアルキレンイミン)のセグメントとオルガノポリシロキサンのセグメントとの重量比が1/50〜20/1で、分子量が10,000〜500,000、特に50,000〜300,000のものが好ましい。
【0026】
また、ビニル・シリコーンブロックポリマーとしては、次の一般式(7)
【0027】
【化3】
Figure 0004088029
【0028】
(式中、R12、R13、R14及びR15は同一又は異なって、水素原子、炭素数1〜6のアルキル基又はニトリル基を示し、R16、R17、R18及びR19は同一又は異なって、水素原子、ハロゲン原子が置換していてもよいアルキル基又はアリール基を示し、Yはハロゲン原子が置換していてもよい炭素数1〜10の直鎖又は分岐鎖の飽和又は不飽和炭化水素基を示し、Aは−CONH−基又は−COO−基を示し、Bは−NHCO−基又は−OCO−基を示す。ここでAが−CONH−基のときBは−NHCO−基であり、Aが−COO−基のときBは−OCO−基である。qは0〜200の数を示し、pは0〜6の数を示し、aは2〜300の数を示す)
で表されるシリコーンポリマー単位とフッ素原子を有しないビニルモノマー単位とを構成単位とするビニル・シリコーンブロックコポリマーであって、一般式(7)のシリコーンポリマー単位を構成するシリコーンモノマーの総数は5〜106であり、該ビニルモノマー単位の総数は10〜106であり、該シリコーンモノマーの総数と該ビニルモノマーの総数との和は102〜106であり、かつ該シリコーンモノマーの総数/該ビニルモノマーの総数の比が1/99〜99/1であるブロックコポリマーを、その一例として挙げることができる。
【0029】
皮膜形成性高分子は、1種以上を用いることができ、全組成中に0.1〜15重量%、特に0.5〜10重量%、更に1〜8重量%含有させるのが好ましい。
【0030】
また、本発明の固形粉末化粧料には、通常化粧料に用いられる体質顔料、着色顔料を配合できる。例えばケイ酸、無水ケイ酸、ケイ酸マグネシウム、タルク、セリサイト、マイカ、カオリン、ベンガラ、クレー、ベントナイト、チタン被覆雲母、オキシ塩化ビスマス、酸化ジルコニウム、酸化マグネシウム、酸化亜鉛、酸化アルミニウム、酸化チタン、酸化鉄、酸化クロム、硫酸カルシウム、硫酸バリウム、硫酸マグネシウム、炭酸カルシウム、炭酸マグネシウム、群青、水酸化クロム、カラミン及びカーボンブラック、これらの複合体等の無機粉体;ポリアミド、ポリエステル、ポリプロピレン、ポリスチレン、ポリウレタン、ビニル樹脂、尿素樹脂、フェノール樹脂、フッ素樹脂、ケイ素樹脂、アクリル樹脂、メラミン樹脂、エポキシ樹脂、ポリカーボネート樹脂、ジビニルベンゼン・スチレン共重合体、シルクパウダー、セルロース等からなる樹脂粉体、これらの複合体等の樹脂粉体、或は、上記無機粉体と樹脂粉体との複合粉体などが挙げられる。
【0031】
これらの粉体は、1種以上を用いることができ、全組成中に0〜90重量%、特に10〜90重量%含有させるのが好ましい。
【0032】
本発明の固形粉末化粧料には更に油剤を配合でき、しっとり感や肌へのつきがより向上するので好ましい。油剤としては、例えばワセリン、ラノリン、セレシン、マイクロクリスタリンワックス、カルナバロウ、キャンデリラロウ、高級脂肪酸、高級アルコール等の固形・半固形油分;スクワラン、流動パラフィン、エステル油、ジグリセライド、トリグリセライド、シリコン油等の流動油分;パーフルオロポリエーテル、パーフルオロデカリン、パーフルオロオクタン等のフッ素系油剤などが挙げられる。
【0033】
これら油剤は、1種以上を用いることができ、全組成中に30重量%程度まで、特に20重量%以下、更に15重量%以下の範囲で含有させるのが好ましい。
【0034】
本発明の固形粉末化粧料には、更に界面活性剤、防腐剤、酸化防止剤、色素、増粘剤、pH調整剤、香料、紫外線吸収剤、保湿剤、血行促進剤、冷感剤、制汗剤、殺菌剤、皮膚賦活剤等を適宜配合できる。
【0035】
本発明の固形粉末化粧料は、例えば粉体、弾性率が200kg/cm2以下の皮膜形成性高分子及び揮発性溶剤を混合した後、揮発性溶剤を揮発させて固形化することにより製造される。ここで用いられる揮発性溶剤としては、例えば水;エタノール、イソプロピルアルコール等の低沸点アルコール;ヘキサン、イソパラフィン、アセトン、酢酸エチル、揮発性シリコーン油などが挙げられる。特に、水又はアルコール水溶液が好ましい。粉体、皮膜形成性高分子及び揮発性溶剤を混合する際には、粉体を40〜94.9重量%、特に50〜94.9重量%、皮膜形成性高分子を0.1〜14重量%、特に0.5〜10重量%、及び揮発性溶剤を5〜40重量%混合するのが好ましい。粉体、被膜形成性高分子及び揮発性溶剤の混合物を、容器に充填して圧縮成型し、適当な条件(温度、圧力、時間)下で溶剤を揮発させることにより、固形粉末化粧料が得られる。ここで、圧縮成型及び溶剤揮発の条件は、目的とする固形粉末化粧料の種類、大きさ、形状に応じて適宜決めることができる。
【0036】
【発明の効果】
本発明によれば、塗布時のつき、のび、しっとり感及び透明感に優れ、耐衝撃性の高い固形粉末化粧料が得られる。本発明の固形粉末化粧料は、例えばファンデーション、フェイスパウダー、ほほ紅、アイシャドウ等のメイクアップ化粧料などとして好適である。
【0037】
【実施例】
合成例1
フラスコにタウリン125.2g(1.0mol)、水1000.8g、2−プロパノール164.5g、及び48%水酸化ナトリウム水溶液83.3g(1.0mol)を仕込み、溶解させた。次いで、40℃に昇温し、ラウリン酸クロリド196.7g(0.9mol)を48%水酸化ナトリウム水溶液74.5g(0.9mol)を用いてpH11.0に調整しながら、約2時間かけて添加した。更に40℃で1時間攪拌し、N−ラウロイルタウリンナトリウム塩水溶液1645gを得た。更に塩酸でpH2.0に調整し40℃に昇温し、20%塩化カルシウム水溶液277.5g(0.5mol)を10分かけて滴下した。同温度で1時間攪拌し、減圧濾過した。さらに600gのイオン交換水で3回、600gの2−プロパノールで3回、通液洗浄した。得られたケークを減圧乾燥し、白色のN−ラウロイルタウリンカルシウム塩を278g(95%)得た。
【0038】
合成例2
ラウリン酸クロリドの代わりにステアリン酸クロリド272.3g(0.9mol)を用いる以外は合成例1と同様にして、白色のN−ステアロイルタウリンカルシウム塩を347g(94%)得た。
【0039】
合成例3
タウリンの代わりにβ−アラニン89.0g(1.0mol)を用いる以外は合成例1と同様にして、白色のN−ラウロイル−β−アラニンカルシウム塩を230g(88%)得た。
【0040】
合成例4
フラスコにイセチオン酸ナトリウム148.0g(1.0mol)、及びラウリン酸200.0g(1.0mol)を仕込み、220℃に昇温し、約3時間攪拌した。冷却後、水1500mL及び2−プロパノール500mLを加えて昇温し、約70℃で溶解させた後、室温まで冷却した。析出した結晶を減圧濾過し、660gのイオン交換水で3回、660gのアセトンで3回、通液洗浄した。得られたケークを減圧乾燥し、ラウロイルイセチオン酸ナトリウム塩を198g(60%)得た。得られたラウロイルイセチオン酸ナトリウム塩198g及び水1000gを仕込み、溶解させた。更に35℃に昇温し、20%塩化カルシウム水溶液183.2g(0.33mol)を10分かけて滴下した。同温度で1時間攪拌し、減圧濾過した。さらに190gのイオン交換水で3回、190gの2−プロパノールで3回、通液洗浄した。得られたケークを減圧乾燥し、白色のラウロイルイセチオン酸カルシウム塩を174.3g(89%)得た。
【0041】
合成例5
N−メチルタウリンナトリウム水溶液(65%)247.95g(1.0mol)、パルミチン酸クロリド247.1g(0.9mol)を用い、合成例1と同様にして、白色のN,N−パルミトイルメチルタウリンカルシウム塩を285g(80%)得た。
【0042】
実施例1
表1及び表2に示す組成の固形粉末ファンデーションを製造した。すなわち、まず粉体成分を、ヘンシェルミキサーを用いて混合した後、更に皮膜形成性高分子を加えて混合して中皿に充填し、プレス成型した後、乾燥させて固形粉末ファンデーションを得た。
得られたファンデーションについて、塗布時のつき、のび、しっとり感、透明感及び撥水性を以下の基準で評価した。また、耐衝撃性については、直径54mm、深さ4mmのアルミ製中皿に充填、3kg/cm2の圧力でプレス成型し、50℃、常圧で3時間乾燥させたものを、50cmの高さから、厚み25mmのラワン材ベニヤ板上にくり返し落下させ、かけや割れなどの異常が生じるまでの回数で評価した。結果を表1及び表2に併せて示す。
本発明品はいずれも、比較品に比べて、塗布時のつき、のび、しっとり感及び透明感に優れ、かつ耐衝撃性も高いものであった。特に、フッ素処理ラウロイルタウリンカルシウムを用いた場合には、撥水性に優れていた。
【0043】
(評価基準)
◎:優秀。
○:良好。
△:やや劣る。
×:劣る。
【0044】
【表1】
Figure 0004088029
【0045】
【表2】
Figure 0004088029
【0046】
*1:ラウロイルタウリンカルシウム150gを丸底フラスコに入れ、60℃に加熱する。これに(C6F13CH2CH2O)2P(OH)=O 13gとイソプロピルエーテル1500gを溶解加熱したものを加え、60℃で4時間混合する。その後、56〜60℃でイソプロピルエーテルを減圧留去し、乾燥して得たもの。
*2:トスパール145A(東芝シリコーン社製)
*3:特開平10−95705号の合成例7に記載のものをエタノールに溶解し、溶媒置換によって12重量%水分散液としたもの。
*4:特開2000−80015号の調製例1記載の方法により製造したもの。
*5:ヨドゾールGH−800(カネボウNSC社製)を水で希釈し、12重量%エマルジョンとしたもの。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a solid powder cosmetic that is excellent in stickiness, spread, moist feeling and transparency at the time of application, and has few cracks due to external force.
[0002]
[Prior art]
Solid powder cosmetics such as foundations and eye shadows are generally produced by a press molding method in which a container is filled with a raw material composition and then compressed and solidified. However, since general solid powder cosmetics have a relatively small amount of oil, the bonding force between powders is weak, and the press molding method requires a high press pressure. The resulting molded product is generally hard and has a powdery feel.
[0003]
In order to solve these problems, a method in which a film-forming polymer having a modulus of elasticity of 200 kg / cm 2 or less and a volatile solvent are mixed with powder and then the volatile solvent is volatilized to solidify (Japanese Patent Laid-Open No. 2000-80015) ) Has been proposed. However, the solid powder cosmetic obtained by this method is not fully satisfactory in terms of stickiness, spread, moist feeling and the like.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a solid powder cosmetic that is excellent in adhesion, spread, moist feeling and transparency at the time of application, and has few cracks due to external force.
[0005]
[Means for Solving the Problems]
The present inventors have found that the above-described solid powder cosmetic can be obtained by using organic powder having a specific strength and setting hardness, porosity and impact resistance to specific values.
[0006]
The present invention relates to a film-forming polymer having 30 to 90% by weight of an organic powder comprising an acylated taurine polyvalent metal salt having an average crushing strength of 0.2 to 1 kg / mm 2 and an elastic modulus of 1 to 100 kg / cm 2. containing, hardness of 10 to 75 in ASKER durometer C1L type, with porosity from 0.4 to 0.7, and lauan plywood of thickness 25mm impact value (molding from a height of 50cm The present invention provides a solid powder cosmetic having a frequency of 5 or more until an abnormality occurs when it is repeatedly dropped down.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The organic powder used in the present invention has an average strength of 0.2 to 1 kg / mm 2 , preferably 0.3 to 0.6 kg / mm 2 . Those average intensity of less than 0.2 kg / mm 2, the spreadability performance is impaired, and when it is more than 1 kg / mm 2, per, moist feeling deteriorates. Here, the average strength is obtained from the load when one powder particle is applied with an upper indenter and the particle is broken and the particle size of the particle, and this is repeated for 10 particles. The average value is obtained.
In the present invention, the average strength was measured according to the instruction manual using a Shimadzu micro-compression tester model; MCTM-200 (manufactured by Shimadzu Corporation), and determined by the following formula (1). Here, d indicates the particle size of the powder.
[0008]
St (strength) = 2.8P (breaking load) / πd 2 (1)
[0009]
Examples of such organic powders include aliphatic amide sulfonic acid polyvalent metal salts, acylated amino acid polyvalent metal salts, aliphatic ester sulfonic acid polyvalent metal salts, and alkylaminomethyl sulfate polyvalent metal salts. It is done. Of these, those having an alkyl group and an amide group in the molecule are preferred, aliphatic amide sulfonic acid polyvalent metal salts and acylated amino acid polyvalent metal salts are preferred, and acylated taurine polyvalent metal salts are particularly preferred. The alkyl group in the molecule preferably has 7 to 21 carbon atoms, particularly 9 to 17 carbon atoms. Examples of the polyvalent metal atom include calcium, magnesium, barium, aluminum, zinc, iron, titanium, zirconium and the like, and alkaline earth metals such as calcium, magnesium and barium are preferable, and calcium is particularly preferable.
[0010]
These organic powders can be used as they are or after the surface is hydrophobized. Hydrophobizing treatment includes, for example, silicone oil, fatty acid metal salt, alkyl phosphoric acid, alkali metal salt or amine salt of alkyl phosphoric acid, N-mono long chain (carbon number 8 to 22) aliphatic acyl basic amino acid, perfluoroalkyl It can be performed by a conventional method using a hydrophobizing agent such as a fluorine compound having a group. As the hydrophobizing agent, a fluorine compound is particularly preferable. The treatment amount of the hydrophobizing agent with respect to the powder is preferably 0.05 to 20% by weight, particularly 2 to 10% by weight.
[0011]
One or more organic powders can be used, and it is preferable to contain 1 to 90% by weight, particularly 5 to 70% by weight, and more preferably 10 to 60% by weight in the total composition.
[0012]
The solid powder cosmetic of the present invention has a hardness of 75 or less, particularly 10 to 75, as a Asker rubber hardness meter C1L type, a porosity of 0.4 or more, particularly 0.45 to 0.7, and an impact resistance value. Is preferably 5 or more, more preferably 5 or more, and more preferably 7 or more from the viewpoint of usability and cracking. Further, when the solid powder cosmetic is a foundation, the hardness is preferably 10 to 70, and more preferably 10 to 65. In the case of an eye shadow, the hardness is 30 to 75, particularly 50 to 75. Is more preferable.
[0013]
Here, the hardness is measured directly with a Asker rubber hardness meter C1L type. In the present invention, the measurement was performed by filling, molding, and drying a sample in an aluminum pan having a diameter of 54 mm and a depth of 4 mm. Moreover, the porosity was determined by measuring the weight and volume of the molded product and the true specific gravity of the powder bulk, and calculating the porosity by the following equation (2).
[0014]
[Expression 1]
Figure 0004088029
[0015]
Here, the molded product refers to a cosmetic after being molded and dried. The powder bulk is obtained by drying a powder mixture before molding, and the true specific gravity was measured using an Accupick 1330 manufactured by Shimadzu Corporation.
[0016]
The impact resistance is an evaluation of the number of times that the molded product is repeatedly dropped from a height of 50 cm onto a 25 mm thick lauan plywood and abnormalities such as cracks and cracks occur.
[0017]
The present invention has been found that a solid powder cosmetic satisfying the above conditions exhibits a desired performance, and together with the organic powder, a film-forming polymer having an elastic modulus of 200 kg / cm 2 or less. It is preferable to contain.
[0018]
Among the film-forming polymer used here, the elastic modulus 200 kg / cm 2 or less, are preferred in particular 1 to 100 kg / cm 2. When a material having an elastic modulus exceeding 200 kg / cm 2 is used, the product is inferior in softness and smoothness and the usability is deteriorated.
In the present invention, the elastic modulus was measured as follows.
That is, first, 10 g of a solution or dispersion of each film-forming polymer was weighed in a Teflon petri dish having a diameter of 5 cm and naturally dried for 5 to 10 days (thickness 0.3 to 0. 0). 5 mm) was cut into strips having a length of 15 mm and a width of 5 mm, and used as measurement samples. This sample was allowed to stand at 25 ° C. and a relative humidity of 30% for 24 hours or more, and then fixed to a tensile test jig of a dynamic viscoelasticity measuring device (UBM, Rheospectrer DVE-V4), and an excitation frequency of 10 Hz. The measurement was performed under the condition of an amplitude of 10 μm.
[0019]
Such a film-forming polymer preferably has a molecular weight of about 10,000 to 1,000,000. For example, a high molecular weight polymer obtained by polymerizing one or more monomers having a polymerizable double bond. Molecules, poly (N-acylalkylenimine) -modified silicones (JP-A-5-112423, JP-A-7-133352, JP-A-10-95705), vinyl / silicone block polymer (JP-A-11-100307), etc. Is mentioned.
[0020]
Examples of the monomer having a polymerizable double bond include ethylenically unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, and fumaric acid; hydroxyethyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, and the like. Unsaturated carboxylic acid esters; unsaturated carboxylic acid amides such as (meth) acrylamide and N-diacetone acrylamide; aminoethyl (meth) acrylate, N, N-dimethylaminoethyl (meth) acrylate, N, N-diethylaminoethyl ( Hydrophilic monomers such as amino group-containing unsaturated carboxylic acid esters or salts thereof such as (meth) acrylate, N, N, N-trimethylaminoethyl (meth) acrylate; styrene, α-methylstyrene, chlorostyrene, alkylstyrene Aromatic vinyl compounds such as Acrylic esters such as ru (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, t-butyl (meth) acrylate, cyclohexyl (meth) acrylate, etc. And methacrylic acid esters; vinyl cyanide compounds such as acrylonitrile and methacrylonitrile; vinyl esters such as vinyl acetate; vinyl halides such as vinyl chloride and vinylidene chloride; trifluoroethyl methacrylate, 2,2,3,3-tetrafluoro Fluorine monomers such as propyl methacrylate, 2,2,3,3,4,4-hexafluorobutyl methacrylate, perfluorooctyl methacrylate, perfluorooctyl acrylate; the following general formulas (1) to (5) And hydrophobic monomers such as silicone macromonomer represented by
[0021]
[Chemical 1]
Figure 0004088029
[0022]
[In the above formula, R 1 represents a hydrogen atom or a methyl group, R 2 to R 10 each represents an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or a phenyl group; (Indicates a number of 500)
[0023]
In addition, poly (N-acylalkylenimine) -modified silicone has the formula (6) in the molecule.
[0024]
[Chemical 2]
Figure 0004088029
[0025]
(Wherein R 11 represents a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, a cycloalkyl group, an aralkyl group, or an aryl group, and m is 2 or 3)
A poly (N-acylalkyleneimine) segment composed of a repeating unit represented by the following: and an organopolysiloxane segment, and an alkylene group containing a hetero atom at the end of the segment of the organopolysiloxane or as a side chain. A segment of poly (N-acylalkyleneimine) composed of repeating units represented by the formula (6) is bonded to the segment of poly (N-acylalkyleneimine) and a segment of organopolysiloxane Are preferably 1/50 to 20/1 and have a molecular weight of 10,000 to 500,000, particularly 50,000 to 300,000.
[0026]
As vinyl / silicone block polymers, the following general formula (7)
[0027]
[Chemical 3]
Figure 0004088029
[0028]
(Wherein R 12 , R 13 , R 14 and R 15 are the same or different and each represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a nitrile group, and R 16 , R 17 , R 18 and R 19 are The same or different, a hydrogen atom, an alkyl group or an aryl group which may be substituted by a halogen atom, and Y is a C1-C10 straight or branched chain saturated or optionally substituted by a halogen atom; Represents an unsaturated hydrocarbon group, A represents a -CONH- group or -COO- group, B represents a -NHCO- group or -OCO- group, and when A is a -CONH- group, B represents -NHCO -When A is a -COO- group, B is a -OCO- group, q is a number from 0 to 200, p is a number from 0 to 6, and a is a number from 2 to 300. Show)
A vinyl-silicone block copolymer having a silicone polymer unit represented by formula (I) and a vinyl monomer unit having no fluorine atom as structural units, and the total number of silicone monomers constituting the silicone polymer unit of the general formula (7) is 5 to 5. 10 6 , the total number of vinyl monomer units is 10 to 10 6 , the sum of the total number of silicone monomers and the total number of vinyl monomers is 10 2 to 10 6 , and the total number of silicone monomers / the A block copolymer in which the ratio of the total number of vinyl monomers is 1/99 to 99/1 can be given as an example.
[0029]
One or more kinds of the film-forming polymer can be used, and the total composition is preferably 0.1 to 15% by weight, particularly 0.5 to 10% by weight, and more preferably 1 to 8% by weight.
[0030]
The solid powder cosmetic of the present invention can be incorporated with extender pigments and color pigments usually used in cosmetics. For example, silicic acid, anhydrous silicic acid, magnesium silicate, talc, sericite, mica, kaolin, bengara, clay, bentonite, titanium-coated mica, bismuth oxychloride, zirconium oxide, magnesium oxide, zinc oxide, aluminum oxide, titanium oxide, Inorganic powders such as iron oxide, chromium oxide, calcium sulfate, barium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, ultramarine, chromium hydroxide, calamine and carbon black, and composites thereof; polyamide, polyester, polypropylene, polystyrene, Polyurethane, vinyl resin, urea resin, phenol resin, fluororesin, silicon resin, acrylic resin, melamine resin, epoxy resin, polycarbonate resin, divinylbenzene / styrene copolymer, silk powder, cellulose Made of a resin powder, these resin powder complexes such, or, like composite powder of the inorganic powder and the resin powder and the like.
[0031]
One or more kinds of these powders can be used, and it is preferable to contain 0 to 90% by weight, particularly 10 to 90% by weight in the total composition.
[0032]
The solid powder cosmetic of the present invention can be further blended with an oil agent, which is preferable because it feels moist and the skin feels better. Examples of oils include solid and semi-solid oils such as petrolatum, lanolin, ceresin, microcrystalline wax, carnauba wax, candelilla wax, higher fatty acids and higher alcohols; squalane, liquid paraffin, ester oil, diglyceride, triglyceride, silicone oil Fluid oil content: fluorinated oils such as perfluoropolyether, perfluorodecalin and perfluorooctane.
[0033]
One or more of these oil agents can be used, and it is preferable to contain up to about 30% by weight, particularly 20% by weight or less, and further 15% by weight or less in the total composition.
[0034]
The solid powder cosmetics of the present invention further include surfactants, preservatives, antioxidants, dyes, thickeners, pH adjusters, fragrances, ultraviolet absorbers, humectants, blood circulation promoters, cooling sensates, antiseptics. A sweat agent, a bactericidal agent, a skin activator, etc. can be mix | blended suitably.
[0035]
The solid powder cosmetic of the present invention is produced, for example, by mixing a powder, a film-forming polymer having an elastic modulus of 200 kg / cm 2 or less, and a volatile solvent, and then volatilizing the volatile solvent to solidify. The Examples of the volatile solvent used here include water; low-boiling alcohols such as ethanol and isopropyl alcohol; hexane, isoparaffin, acetone, ethyl acetate, and volatile silicone oil. In particular, water or an aqueous alcohol solution is preferable. When mixing the powder, the film-forming polymer and the volatile solvent, the powder is 40 to 94.9% by weight, particularly 50 to 94.9% by weight, and the film-forming polymer is 0.1 to 14%. It is preferred to mix 5% to 40% by weight, especially 0.5 to 10% by weight, and volatile solvents. Filling a container with a mixture of powder, film-forming polymer and volatile solvent, compression molding, and evaporating the solvent under appropriate conditions (temperature, pressure, time) gives a solid powder cosmetic. It is done. Here, the conditions of compression molding and solvent volatilization can be appropriately determined according to the type, size, and shape of the target solid powder cosmetic.
[0036]
【The invention's effect】
According to the present invention, it is possible to obtain a solid powder cosmetic having excellent impact resistance, spreading, moist feeling and transparency, and high impact resistance. The solid powder cosmetics of the present invention are suitable as makeup cosmetics such as foundations, face powders, cheeks and eye shadows.
[0037]
【Example】
Synthesis example 1
A flask was charged with 125.2 g (1.0 mol) of taurine, 1000.8 g of water, 164.5 g of 2-propanol, and 83.3 g (1.0 mol) of a 48% aqueous sodium hydroxide solution and dissolved. Next, the temperature was raised to 40 ° C., and 196.7 g (0.9 mol) of lauric acid chloride was adjusted to pH 11.0 using 74.5 g (0.9 mol) of a 48% aqueous sodium hydroxide solution over about 2 hours. Added. Furthermore, it stirred at 40 degreeC for 1 hour, and obtained N-lauroyl taurine sodium salt aqueous solution 1645g. Further, the pH was adjusted to 2.0 with hydrochloric acid, the temperature was raised to 40 ° C., and 277.5 g (0.5 mol) of a 20% calcium chloride aqueous solution was added dropwise over 10 minutes. The mixture was stirred at the same temperature for 1 hour and filtered under reduced pressure. Further, the liquid was washed three times with 600 g of ion-exchanged water and three times with 600 g of 2-propanol. The obtained cake was dried under reduced pressure to obtain 278 g (95%) of white N-lauroyl taurine calcium salt.
[0038]
Synthesis example 2
347 g (94%) of white N-stearoyl taurine calcium salt was obtained in the same manner as in Synthesis Example 1 except that 272.3 g (0.9 mol) of stearic acid chloride was used instead of lauric acid chloride.
[0039]
Synthesis example 3
230 g (88%) of white N-lauroyl-β-alanine calcium salt was obtained in the same manner as in Synthesis Example 1 except that 89.0 g (1.0 mol) of β-alanine was used instead of taurine.
[0040]
Synthesis example 4
The flask was charged with 148.0 g (1.0 mol) of sodium isethionate and 200.0 g (1.0 mol) of lauric acid, heated to 220 ° C. and stirred for about 3 hours. After cooling, 1500 mL of water and 500 mL of 2-propanol were added, the temperature was raised, and the mixture was dissolved at about 70 ° C., and then cooled to room temperature. Precipitated crystals were filtered under reduced pressure, and washed with liquid passing through 660 g of ion-exchanged water three times and 660 g of acetone three times. The obtained cake was dried under reduced pressure to obtain 198 g (60%) of sodium laureuylisethionate. 198 g of the obtained sodium laureuylisethionate and 1000 g of water were charged and dissolved. The temperature was further raised to 35 ° C., and 183.2 g (0.33 mol) of a 20% aqueous calcium chloride solution was added dropwise over 10 minutes. The mixture was stirred at the same temperature for 1 hour and filtered under reduced pressure. Further, the solution was washed with 190 g of ion-exchanged water three times and with 190 g of 2-propanol three times. The obtained cake was dried under reduced pressure to obtain 174.3 g (89%) of white calcium laureuylisethionate.
[0041]
Synthesis example 5
White N, N-palmitoylmethyltaurine was prepared in the same manner as in Synthesis Example 1 using 247.95 g (1.0 mol) of an aqueous solution of sodium N-methyltaurine (65%) and 247.1 g (0.9 mol) of palmitic acid chloride. 285 g (80%) of calcium salt was obtained.
[0042]
Example 1
Solid powder foundations having the compositions shown in Tables 1 and 2 were produced. That is, first, the powder components were mixed using a Henschel mixer, and then a film-forming polymer was added and mixed, filled into an inner dish, press molded, and dried to obtain a solid powder foundation.
About the obtained foundation, the stickiness at the time of application | coating, spread, moist feeling, transparency, and water repellency were evaluated on the following reference | standard. As for impact resistance, it was filled in an aluminum pan with a diameter of 54 mm and a depth of 4 mm, press-molded at a pressure of 3 kg / cm 2 and dried at 50 ° C. and normal pressure for 3 hours. Then, it was repeatedly dropped on a 25 mm thick lauan plywood and evaluated by the number of times until abnormalities such as cracks and cracks occurred. The results are shown in Table 1 and Table 2 together.
All of the products of the present invention were superior in stickiness, spread, moist and transparent feeling at the time of application, and higher in impact resistance than the comparative products. In particular, when fluorinated lauroyl taurine calcium was used, the water repellency was excellent.
[0043]
(Evaluation criteria)
A: Excellent.
○: Good.
Δ: Slightly inferior
X: Inferior.
[0044]
[Table 1]
Figure 0004088029
[0045]
[Table 2]
Figure 0004088029
[0046]
* 1: Place 150 g of lauroyl taurine calcium in a round bottom flask and heat to 60 ° C. To this, 13 g of (C 6 F 13 CH 2 CH 2 O) 2 P (OH) ═O and 1500 g of isopropyl ether dissolved and heated are added and mixed at 60 ° C. for 4 hours. Thereafter, isopropyl ether was distilled off under reduced pressure at 56-60 ° C. and dried.
* 2: Tospearl 145A (Toshiba Silicone)
* 3: A solution described in Synthesis Example 7 of JP-A No. 10-95705 was dissolved in ethanol to form a 12% by weight aqueous dispersion by solvent substitution.
* 4: Manufactured by the method described in Preparation Example 1 of JP-A-2000-80015.
* 5: Yodozole GH-800 (manufactured by Kanebo NSC) diluted with water to give a 12% by weight emulsion.

Claims (3)

平均圧壊強度0.2〜1kg/mm2 アシル化タウリン多価金属塩からなる有機粉体30〜90重量%並びに弾性率が1〜100kg/cm2の皮膜形成性高分子を含有し、硬度がアスカーゴム硬度計C1L型で10〜75であり、空隙率が0.4〜0.7で、かつ耐衝撃性値(成型品を50cmの高さから厚み25mmのラワン材ベニヤ板上にくり返し落下させたとき異常が生じるまでの回数)が5以上である固形粉末化粧料。Containing 30 to 90% by weight of an organic powder composed of an acylated taurine polyvalent metal salt having an average crushing strength of 0.2 to 1 kg / mm 2 and a film-forming polymer having an elastic modulus of 1 to 100 kg / cm 2 ; hardness of 10 to 75 in ASKER durometer C1L type, with porosity from 0.4 to 0.7, and repeatedly fall lauan plywood on thickness 25mm impact value (molding from a height of 50cm Solid powder cosmetics having a frequency of 5 or more until an abnormality occurs. 有機粉体が、表面を疎水化処理したものである請求項記載の固形粉末化粧料。Organic powder, pressed powder cosmetic of claim 1, wherein the surface is obtained by hydrophobic treatment. 有機粉体が、表面をフッ素化合物で処理したものである請求項1又は2記載の固形粉末化粧料。The solid powder cosmetic according to claim 1 or 2 , wherein the organic powder has a surface treated with a fluorine compound.
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