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JP3884818B2 - Hair dye composition - Google Patents

Hair dye composition Download PDF

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Publication number
JP3884818B2
JP3884818B2 JP06389097A JP6389097A JP3884818B2 JP 3884818 B2 JP3884818 B2 JP 3884818B2 JP 06389097 A JP06389097 A JP 06389097A JP 6389097 A JP6389097 A JP 6389097A JP 3884818 B2 JP3884818 B2 JP 3884818B2
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JP
Japan
Prior art keywords
hair
acid
red
dyeing
pigment
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Expired - Fee Related
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JP06389097A
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Japanese (ja)
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JPH10245327A (en
Inventor
睦 野口
勇一 西田
友子 小八木
恵 吉本
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Lion Corp
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Lion Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、染毛の染毛剤組成物に関し、更に詳細には、染毛の際に、色落ちが少なく、移染性がなく、鮮やかな染毛色を有し、しかも染毛性、染毛後の毛髪のしなやかさ及びくし通り性に優れた染毛剤組成物に関する。
【0002】
【従来の技術】
酸性染料、天然色素を配合した染毛剤は、他の染毛剤に比べて毛髪損傷性の少ないことから家庭で、また美容院で広く使用されている。
しかしながら、当該酸性染料染毛剤は、毛髪に塗布した後にシャンプーで洗い流す際、洗液が不快なほど濃い色素色をしており、シャンプー後タオルや枕カバーに色素液が付着したり、発汗や降雨で毛髪が濡れたときに衣類等に移染してしまうという欠点を有している。また特に黒髪では鮮やかな色調を得ることができないという欠点を有している。
【0003】
このような欠点である染着性、耐色落ち性等を改良するために、特定の酸性染料を用い、グリコール酸及び/又はピロリドンカルボン酸及び/又はそれらのアルカリ金属塩、アルカリ土類金属塩、アミン塩を併用した染毛料組成物も提案されているが(特開平6−298630号)、移染性の点で未だ満足しうるものではない。
【0004】
また、ヘアーリンスのような使用方法で多数回使用することにより白髪を目立たせなくする染毛剤組成物として、有機溶剤、多価アルコール、酸性染料、酸を配合した染毛剤組成物が提案されているが(特開昭5−221840号)十分な染毛効果を得るためには多数回使用することが必要であるなど、使用の簡便性に劣り、染毛効果や移染性の点などで未だ満足しうるものではない。
【0005】
【発明が解決しようとする課題】
本発明は、従来の酸性染料、天然色素を用いた染毛剤の欠点を解消し、染毛の際のシャンプー洗液の色が著しく抑えられ、また、タオルや枕カバー等の衣類、肌等への移染性がなく、鮮やかな色調を得ることができ、しかも染色性に優れ、染毛後の毛髪のしなやかさ、なめらかさ、くし通り性に優れた染毛剤組成物を提供することを目的とする。
【0006】
【課題を解決するための手段】
本発明者は、前記課題を解決すべく鋭意検討した結果、酸性染料、天然色素の洗液への色落ちを抑えること、衣類等への移染性をなくするためには、染毛剤中に、緩衝剤としてグリコール酸とその塩を用い、特定の芳香族アルコールを配合することで、酸性染料、天然色素により黒髪でも鮮やかな色調を得ること並びに染毛処理後の毛髪に豊かな風合いを付与し、さらに染液への色落ちを抑えること、タオルや衣類、寝具などへの移染をなくすためには、pH2.0〜7.5であり、緩衝能が0.01〜0.5グラム当量/lであることによってこの課題を解決することを見いだし、本発明を完成させた。
【0007】
即ち、本発明によれば、
(A)酸性染料または天然色素 0.01〜2重量%
(B)芳香族アルコール 0.5〜20重量%
(C)グリコール酸およびその塩 0.1〜20重量%
を含有し、pHが2.0〜7.5であり、かつ緩衝能が0.01グラム当量/l以上0.5グラム当量/l未満であることを特徴とする染毛剤組成物が提供される。
【0008】
【発明の実施の形態】
本発明の染毛剤組成物(A)成分である酸性染料としては、ニトロ染料、アゾ染料、ニトロソ染料、トリフェニルメタン染料、キサンチン染料、キノリン染料、アントラキノン染料、インジゴ染料等が挙げられ、具体的には、赤色2号、赤色3号、赤色102号、赤色104号、赤色105号、赤色106号、黄色4号、黄色6号、緑色3号、青色1号、青色2号、赤色201号、赤色227号、赤色220号、赤色230号、赤色231号、赤色232号、橙色205号、橙色207号、黄色202号、黄色203号、緑色201号、緑色204号、緑色206号、青色202号、青色203号、青色205号、かっ色201号、赤色401号、赤色602号、赤色503号、赤色504号、赤色506号、橙色402号、黄色402号、黄色403号、黄色406号、黄色407号、緑色401号、緑色402号、紫色401号、黒色401号等が用いられる。このうち、染毛力の観点より好ましい酸性染料は、黄色4号、緑色204号、赤色2号、赤色102号、緑色3号、青色1号、青色205号、黄色403号、赤色106号、赤色201号、橙色205号、黒色401号、緑色201号又は紫色401号であり、就中黒色401号、紫色401号、橙色205号、黄色403号又は赤色106号が特に好ましい。なお、これら酸性染料は1種又は2種以上を混合して用いることができる。
【0009】
また、(A)成分である天然色素としては、カロチノイド系、アントラキノン系、フラボノイド系(アントシアニン系、カルコン系、フラボン系)、ポルフィリン系、ジケトン系、ベタシアニン系、アゾフィロン系等が挙げられ、具体的にはアカネ色素、アナトー色素、パブリカ色素、クチナシ黄色色素、抽出カロチン、コチニール色素、ラック色素、赤キャベツ色素、シソ色素、紫コーン色素、エルダーベリー色素、ボイセンベリー色素、ブドウ果皮色素、ブドウ果汁色素、ムラサキイモ色素、ベニバナ黄色素、ベニバナ赤色素、コウリャン色素、タマネギ色素、カカオ色素、サンダルウッド色素、スピルリナ青色素、クロロフィル、ウコン色素、ビーレッド、紅麹赤色素、紅麹黄色素、クチナシ青色素、クチナシ赤色素等が用いられる。このうち、染料力の観点より、アカネ色素、パブリカ色素、コチニール色素、ラック色素、コウリャン色素、タマネギ色素、カカオ色素、サンダルウッド色素、クチナシ青色素、クチナシ赤色素等が好ましい。なお、これらの天然色素は1種又は2種以上を混合して用いることができる。
【0010】
上記酸性染料の配合量は、染毛剤組成物全重量に対し0.01〜2重量%であるが、染毛力とコスト面から0.02〜1.0重量%が好ましい。酸性染料の配合量が0.01重量%未満であると、染毛効果が十分に発揮されず、また2重量%を越えると染毛度は良好であるが、皮膚や衣類に誤って付着したときに、除去しにくいので好ましくない。
【0011】
本発明の染毛剤組成物の()成分である芳香族アルコールとしては、下記一般式(1)で表される化合物が挙げられる。
【化1】

Figure 0003884818
(R1は水素原子、メチル基又はメトキシ基、R2は−CH2OH基、−CH2CH2OH基、−CH(CH3)OH基、−CH2CH2CH2OH基、−C(CH3)2OH基、−CH2CH(CH3)OH基、−CH(CH3)CH2OH基、−CH=CHCH2OH基、−OCH2CH2OHを表す。)
これら芳香族アルコールの具体例としては、ベンジルアルコール、フェネチルアルコール、γ−フェニルプロピルアルコール、桂皮アルコール、アニスアルコール、p−メチルベンジルアルコール、α−ジメチルフェネチルアルコール、α−フェニルエタノール、フェノキシエタノール等が挙げられるが、効果の発現性からみてベンジルアルコールが好ましく使用される。
【0012】
上記芳香族アルコールの配合量は、組成中の0.5〜20重量%、より好ましくは5〜12重量%である。配合量が0.5重量%未満では、毛髪を着色するのに十分な効果が得られず、20重量%を越えるとべたつきや芳香族アルコール特有のにおいが生じ、使用に耐え難い。
【0013】
また、(C)成分である、グリコール酸とその塩は緩衝剤として機能するものである。
グリコール酸の塩としては、アンモニウム塩、ナトリウム塩、カリウム塩、トリエタノールアミンを挙げることができ、またこれらの塩は単独もしくは2種以上混合して用いることも可能である。
この中、染毛処理後の毛髪によるタオルや衣類、寝具類への色素による移染のなさ、および染毛効果の発現性からみてグリコール酸のアンモニウム塩を用いることが望ましい。
【0014】
なお、本発明においては緩衝作用を有する有機酸としてグリコール酸を用いることが必要である。グリコール酸以外の酸、たとえばクエン酸、コハク酸、乳酸、リンゴ酸等の有機酸を使用しても十分に満足しうる染まりが得にくく、また染毛後の毛髪に豊かな風合いを与えることが困難となり、本発明の所期の目的を達成することができない。
【0015】
(C)成分の配合量は染毛剤組成物全重量に対して0.1〜20重量%、好ましくは2〜15重量%である。
配合量が0.1重量%未満であると、十分な緩衝能が得られず、また染毛効果が低くなり、また、20重量%を超えると緩衝能を保つことが難しくなるとともに(C)成分が毛髪に「きしみ」等の影響を与えるようになるので好ましくない。
【0016】
本発明の染毛剤組成物のpH(10%水溶液として測定)は2.0〜7.5であり、より好ましくは2.5〜7.0である。pHが2.0未満では酸成分による手肌への刺激が問題となる。
【0017】
また、本発明染毛剤組成物は、本組成物の10%水溶液の緩衝能が0.01グラム当量/l以上で、0.5グラム当量/l未満、好ましくは0.03〜0.1グラム当量/lであることが必要である。ここで、本発明における緩衝能とは、25℃における染毛剤組成物の10%水溶液のpHを初期の値から1上昇させるのに関する塩基の濃度を尺度として次式により求められる値である。
【数1】
緩衝能= | dCB/dpH |
(式中、CBは塩基のイオン濃度(グラム当量/lを示す)
当該緩衝能が、0.01グラム当量未満であると毛髪を鮮やかに染め上げる効果が得られず好ましくない。また、緩衝能が0.5グラム当量/l以上であると、毛髪を鮮やかに染め上げる効果が得られないことに加え、染毛後の毛髪に豊かな風合いを与えることができない。
pHの調整は、有機酸、無機酸またはその塩、アルカリを用いて行なうことができる。
有機酸としては、例えばクエン酸、コハク酸、酒石酸、乳酸、フマル酸、リンゴ酸、レブリン酸、酪酸、吉草酸、シュウ酸、マレイン酸、フマル酸、マンデル酸等を挙げることができ、無機酸としては、例えばリン酸、硫酸、硝酸等を挙げることができる。また、アルカリとしては、例えば、水酸化ナトリウム、水酸化カリウム、水酸化カルシウム、モノエタノールアミン、ジエタノールアミン、トリエタノールアミン、アミノジヒドロキシメチルプロパンジオール、2−アミノ−2−メチル−1−プロパノール、2−アミノ−2−メチル−1,3−プロパンジオール等を挙げることができる。
更にこの他にもアルギニン等の塩基性アミノ酸を用いることも好ましい。
更にまた、これら酸及びアルカリを共存させて、例えば前記酸のナトリウム塩、カリウム塩、アンモニウム塩、トリエタノールアミン塩等として用いることもできる。
【0018】
また、本発明の染毛剤組成物には、本発明の効果を損なわない範囲で各種界面活性剤、カチオン性重合体、油性成分、ヒドロキシエチルセルロースやキサンタンガム等の増粘剤、シリコーン誘導体、香料、防腐剤、紫外線吸収剤、酸化防止剤、殺菌剤等を配合してもよい。
ここで界面活性剤としてはオレフィンスルホン酸、アルカンスルホン酸、脂肪酸アルキルエーテルカルボン酸、N−アシルアミノ酸等のアニオン界面活性剤;アミドベタイン、カルボベタイン、ヒドロキシスルホベタイン等の両性界面活性剤;モノもしくはジアルキル第4級アンモニウム塩等のカチオン界面活性剤;ポリオキシアルキレンアルキルエーテル等の非イオン界面活性剤のいずれも用いることができる。また、カチオン性重合体としてはカチオン化セルロース、カチオン化澱粉、カチオン化グァガム、ジアリル4級アンモニウム塩重合体、ジアリル4級アンモニウム塩/アクリルアミド共重合物、ヒドロキシエチルセルロースジメチルジアリル4級アンモニウム共重合物等が挙げられる。また、油性成分としては脂肪酸エステル類、直鎖又は分岐鎖のアルキルグリセリルエーテル、分岐の高級アルコール等が挙げられる。
【0019】
本発明の染毛剤組成物は、上記成分を混合して定法により製造でき、その使用方法は、毛髪に塗布した後、5分から30分放置した後、シャンプーで洗い流せばよい。
【0020】
【実施例】
次の実施例を挙げて本発明を更に詳細に説明するが、本発明はこれに限定されるものではない。
【0021】
実施例1〜6,比較例1〜4
表1に示す各種組成物を調製し、下記の評価基準により、その染毛度、移染性、しなやかさ及びくし通り性を評価した。その結果を表1に示す。
〔染毛度〕
乾燥したヤギの毛束1gに、表1に示す組成物各1gを均一に塗布した後、室温にて15分間放置し、シャンプーした。その後、乾燥し、下記に示す方法により染毛度(△E*)を評価した。
上記染色毛束を、色差計(日本電色工業株式会社製SPECTRO COLOR METER SE2000)でL,a,b値を測定し、未染色毛との色差(△E*)を求め、染まりを評価した。なお、△E*はその数値が大きいほど染まりが良いことを表す。
【数2】
Figure 0003884818
〔移染性〕
上記同様にヤギ毛に染色処理をし、放置した後にシャンプーで洗い流し、白地タオルに毛束をはさみ、500gのおもりを5分間載せたあとのタオルの染色度合いを官能で評価し、結果を表1に示す。評価基準は以下の通りです。
◎・・・真っ白
○・・・よく見れば、かすかに染色が見られる
△・・・染色が見られるが、程度は軽い
×・・・明らかに染色しており、かなり重度
〔しなやかさ及びくし通り性〕
上記同様にヤギ毛に染色処理をし、放置した後にシャンプーで洗い流し、風乾した後に、手ざわりとくし通りのよさを官能で評価し、結果を表1に示す。
◎・・・手ざわりが非常にしなやかで、くし通りも非常によい。
○・・・手ざわりがしなやかで、くし通りも非常によい。
△・・・手ざわりがややしなやかでなく、くし通りもややよくない。
×・・・手ざわりがしなやかでなく、くし通りもよくない。
【0022】
【表1】
Figure 0003884818
【0023】
表1より本発明品は、十分な染毛効果を示すことがわかる。また、本発明品は手肌の汚れも石鹸洗浄で容易に落すことができた。
【0024】
実施例7〜9
下記組成物は、頭髪に塗布してからすすぎ流す迄の時間が5分間(25℃)の条件で使用した際、一目でわかる染毛効果や毛髪に優れた触感を与えるなどの良好な結果を示した。また、いずれの組成物も調整方法は実施例1〜3と同様に行い、pHは3.3であった。また、実施例7及び8の組成物の緩衝能は0.06グラム当量/lであり、実施例9の組成物の緩衝能は0.11グラム当量/lであった。
【0025】
Figure 0003884818
【0026】
Figure 0003884818
【0027】
Figure 0003884818
【0028】
【発明の効果】
本発明の染毛剤組成物は、染毛性が良好で、シャンプーの際の色落ちが少なく、衣類、肌等への移染性がなく、また、染毛後の毛髪にしなやかさ及び優れたくし通り性を付える。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hair dye composition for hair dyeing. More specifically, the present invention relates to a hair dye composition having less color fading, no dye transfer, and a vivid hair dyeing color. The present invention relates to a hair dye composition having excellent suppleness and combability of hair after hair.
[0002]
[Prior art]
Hair dyes containing acidic dyes and natural dyes are widely used at home and in beauty salons because they have less hair damage than other hair dyes.
However, when the acid dye hair dye is applied to the hair and washed off with a shampoo, the washing solution has an unpleasant dark color, and the dye solution adheres to the towel or pillow cover after shampooing, sweating, When the hair gets wet due to rain, it has the disadvantage of being transferred to clothing. In addition, there is a drawback that vivid color tone cannot be obtained particularly with black hair.
[0003]
In order to improve such defects as dyeing property, color fading resistance, etc., a specific acid dye is used, glycolic acid and / or pyrrolidone carboxylic acid and / or alkali metal salt or alkaline earth metal salt thereof. A hair dye composition using an amine salt has also been proposed (Japanese Patent Laid-Open No. 6-298630), but it is still not satisfactory in terms of dye transfer properties.
[0004]
In addition, as a hair dye composition that makes gray hair inconspicuous by using it many times in a method such as hair rinse, a hair dye composition containing an organic solvent, a polyhydric alcohol, an acid dye, and an acid is proposed. However, in order to obtain a sufficient hair dyeing effect, it is necessary to use the product many times to obtain a sufficient hair dyeing effect. It is not yet satisfactory.
[0005]
[Problems to be solved by the invention]
The present invention eliminates the disadvantages of conventional hair dyes using acidic dyes and natural pigments, remarkably suppresses the color of the shampoo washing solution during hair dyeing, and clothes such as towels and pillow covers, skin, etc. To provide a hair dye composition that has no dye transfer property, can obtain a vivid color tone, has excellent dyeability, and has excellent suppleness, smoothness, and combability of hair after dyeing. With the goal.
[0006]
[Means for Solving the Problems]
As a result of intensive investigations to solve the above problems, the present inventor has found that in order to suppress discoloration of acid dyes and natural pigments in washing solutions and to eliminate transferability to clothes and the like, In addition, by using glycolic acid and its salt as a buffering agent and blending with specific aromatic alcohol, it is possible to obtain a vivid color tone even with black hair with acidic dyes and natural pigments, and a rich texture on the hair after hair dyeing treatment In order to prevent color transfer to a dyeing solution and transfer to towels, clothes, bedding, etc., the pH is 2.0 to 7.5, and the buffer capacity is 0.01 to 0.5. The inventors have found that this problem can be solved by gram equivalent / l, and have completed the present invention.
[0007]
That is, according to the present invention,
(A) Acid dye or natural pigment 0.01-2% by weight
(B) Aromatic alcohol 0.5 to 20% by weight
(C) Glycolic acid and its salt 0.1-20% by weight
A hair dye composition comprising a pH of 2.0 to 7.5 and a buffer capacity of 0.01 gram equivalent / liter or more and less than 0.5 gram equivalent / liter Is done.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Examples of the acidic dye that is a component of the hair dye composition (A) of the present invention include nitro dyes, azo dyes, nitroso dyes, triphenylmethane dyes, xanthine dyes, quinoline dyes, anthraquinone dyes, indigo dyes, and the like. Specifically, Red No. 2, Red No. 3, Red No. 102, Red No. 104, Red No. 105, Red No. 106, Yellow No. 4, Yellow No. 6, Green No. 3, Blue No. 1, Blue No. 2, Red 201 No., Red 227, Red 220, Red 230, Red 231, Red 232, Orange 205, Orange 207, Yellow 202, Yellow 203, Green 201, Green 204, Green 206, Blue 202, Blue 203, Blue 205, Brown 201, Red 401, Red 602, Red 503, Red 504, Red 506, Orange 402, Yellow 402, Color No. 403, yellow 406 No., Yellow 407, Green # 401, Green # 402 No., purple No. 401, black No. 401 or the like is used. Among these, preferred dyes from the viewpoint of hair dyeing power are yellow No. 4, green No. 204, red No. 2, red No. 102, green No. 3, blue No. 1, blue No. 205, yellow No. 403, red No. 106, Red 201, orange 205, black 401, green 201 or purple 401, among which black 401, purple 401, orange 205, yellow 403 or red 106 are particularly preferred. These acidic dyes can be used alone or in combination of two or more.
[0009]
In addition, examples of natural pigments that are component (A) include carotenoids, anthraquinones, flavonoids (anthocyanins, chalcones, flavones), porphyrins, diketones, betacyanines, azophyllones, and the like. Akane pigment, Anato pigment, Publica pigment, Gardenia yellow pigment, Extracted carotene, Cochineal pigment, Lac pigment, Red cabbage pigment, Perilla pigment, Purple corn pigment, Elderberry pigment, Boysenberry pigment, Grape peel pigment, Grape juice pigment , Purple potato, safflower yellow, safflower red, cucumber, onion, cacao, sandalwood, spirulina, chlorophyll, turmeric, beed, red, red, red Gardenia red pigments are used. Among these, from the viewpoint of dye power, red pigment, publica pigment, cochineal pigment, lac pigment, cucumber pigment, onion pigment, cacao pigment, sandalwood pigment, gardenia blue pigment, gardenia red pigment and the like are preferable. These natural pigments can be used alone or in combination of two or more.
[0010]
The amount of the acidic dye is 0.01 to 2% by weight based on the total weight of the hair dye composition, but is preferably 0.02 to 1.0% by weight from the viewpoint of hair dyeing power and cost. If the blending amount of the acid dye is less than 0.01% by weight, the hair dyeing effect is not sufficiently exhibited, and if it exceeds 2% by weight, the hair dyeing degree is good, but it adheres to the skin and clothing by mistake. Sometimes it is not preferable because it is difficult to remove.
[0011]
As an aromatic alcohol which is ( B ) component of the hair dye composition of this invention, the compound represented by following General formula (1) is mentioned.
[Chemical 1]
Figure 0003884818
(R 1 is a hydrogen atom, methyl group or methoxy group, R 2 is —CH 2 OH group, —CH 2 CH 2 OH group, —CH (CH 3 ) OH group, —CH 2 CH 2 CH 2 OH group, — C (CH 3 ) 2 OH group, —CH 2 CH (CH 3 ) OH group, —CH (CH 3 ) CH 2 OH group, —CH═CHCH 2 OH group, —OCH 2 CH 2 OH group are represented.)
Specific examples of these aromatic alcohols include benzyl alcohol, phenethyl alcohol, γ-phenylpropyl alcohol, cinnamon alcohol, anise alcohol, p-methylbenzyl alcohol, α-dimethylphenethyl alcohol, α-phenylethanol, phenoxyethanol and the like. However, benzyl alcohol is preferably used from the viewpoint of expression of effects.
[0012]
The blending amount of the aromatic alcohol is 0.5 to 20% by weight, more preferably 5 to 12% by weight in the composition. If the blending amount is less than 0.5% by weight, a sufficient effect for coloring the hair cannot be obtained. If the blending amount exceeds 20% by weight, stickiness and an odor peculiar to an aromatic alcohol are generated and it is difficult to endure use.
[0013]
Moreover, glycolic acid and its salt which are (C) component function as a buffering agent.
Examples of the salt of glycolic acid include ammonium salt, sodium salt, potassium salt, and triethanolamine, and these salts can be used alone or in combination of two or more.
Of these, it is desirable to use an ammonium salt of glycolic acid from the viewpoint of the absence of dye transfer to towels and clothes and bedding with hair after hair dyeing treatment, and the manifestation of the hair dyeing effect.
[0014]
In the present invention, it is necessary to use glycolic acid as the organic acid having a buffering action. Even if an acid other than glycolic acid, for example, an organic acid such as citric acid, succinic acid, lactic acid or malic acid is used, it is difficult to obtain a sufficiently satisfactory dyeing, and a rich texture can be given to the hair after dyeing. It becomes difficult and the intended purpose of the present invention cannot be achieved.
[0015]
The amount of component (C) is 0.1 to 20% by weight, preferably 2 to 15% by weight, based on the total weight of the hair dye composition.
When the blending amount is less than 0.1% by weight, sufficient buffering ability cannot be obtained, and the hair dyeing effect is lowered, and when it exceeds 20% by weight, it becomes difficult to maintain the buffering ability (C). This is not preferable because the component has an effect such as “squeaking” on the hair.
[0016]
The pH (measured as a 10% aqueous solution) of the hair dye composition of the present invention is 2.0 to 7.5, more preferably 2.5 to 7.0. If the pH is less than 2.0, irritation to the hand skin by the acid component becomes a problem.
[0017]
Moreover, the hair dye composition of the present invention has a buffer capacity of 10% aqueous solution of the composition of 0.01 gram equivalent / l or more and less than 0.5 gram equivalent / l, preferably 0.03 to 0.1. It must be gram equivalent / l. Here, the buffer capacity in the present invention is a value obtained by the following equation using as a measure the concentration of a base related to raising the pH of a 10% aqueous solution of a hair dye composition at 25 ° C. by 1 from the initial value.
[Expression 1]
Buffer capacity = | dC B / dpH |
(Wherein, C B ion concentration of the base (indicating gram equivalent / l)
If the buffer capacity is less than 0.01 gram equivalent, it is not preferable because the effect of dyeing hair vividly cannot be obtained. Further, if the buffer capacity is 0.5 gram equivalent / l or more, in addition to not being able to obtain the effect of dyeing hair vividly, it is not possible to give a rich texture to the hair after dyeing.
The pH can be adjusted using an organic acid, an inorganic acid or a salt thereof, and an alkali.
Examples of the organic acid include citric acid, succinic acid, tartaric acid, lactic acid, fumaric acid, malic acid, levulinic acid, butyric acid, valeric acid, oxalic acid, maleic acid, fumaric acid, mandelic acid, and the like. Examples of the phosphoric acid include phosphoric acid, sulfuric acid, and nitric acid. Examples of the alkali include sodium hydroxide, potassium hydroxide, calcium hydroxide, monoethanolamine, diethanolamine, triethanolamine, aminodihydroxymethylpropanediol, 2-amino-2-methyl-1-propanol, 2- Examples include amino-2-methyl-1,3-propanediol.
In addition, it is also preferable to use a basic amino acid such as arginine.
Furthermore, these acids and alkalis can be used together, for example, as the sodium salt, potassium salt, ammonium salt, triethanolamine salt, etc. of the acid.
[0018]
Further, the hair dye composition of the present invention includes various surfactants, cationic polymers, oily components, thickeners such as hydroxyethyl cellulose and xanthan gum, silicone derivatives, fragrances, and the like within a range not impairing the effects of the present invention. You may mix | blend antiseptic | preservative, a ultraviolet absorber, antioxidant, disinfectant, etc.
Here, as the surfactant, anionic surfactants such as olefin sulfonic acid, alkane sulfonic acid, fatty acid alkyl ether carboxylic acid and N-acyl amino acid; amphoteric surfactants such as amide betaine, carbobetaine and hydroxysulfobetaine; mono or Any of cationic surfactants such as dialkyl quaternary ammonium salts; nonionic surfactants such as polyoxyalkylene alkyl ethers can be used. Examples of the cationic polymer include cationized cellulose, cationized starch, cationized guar gum, diallyl quaternary ammonium salt polymer, diallyl quaternary ammonium salt / acrylamide copolymer, hydroxyethyl cellulose dimethyl diallyl quaternary ammonium copolymer, and the like. Is mentioned. Examples of the oil component include fatty acid esters, linear or branched alkyl glyceryl ethers, branched higher alcohols, and the like.
[0019]
The hair dye composition of the present invention can be produced by a conventional method by mixing the above-described components. The method of using the hair dye composition can be used by applying it to hair, leaving it for 5 to 30 minutes, and then washing it off with shampoo.
[0020]
【Example】
The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.
[0021]
Examples 1-6, Comparative Examples 1-4
Various compositions shown in Table 1 were prepared, and the degree of dyeing, dye transfer, suppleness and combability were evaluated according to the following evaluation criteria. The results are shown in Table 1.
[Hair dyeing degree]
1 g of each composition shown in Table 1 was uniformly applied to 1 g of a dried goat hair bundle, and then allowed to stand at room temperature for 15 minutes and shampooed. Then, it dried and evaluated the hair dyeing degree ((DELTA) E * ) by the method shown below.
The above-mentioned dyed hair bundle was measured for L, a, and b values with a color difference meter (SPECTRO COLOR METER SE2000 manufactured by Nippon Denshoku Industries Co., Ltd.) to determine the color difference (ΔE * ) from the undyed hair, and the dyeing was evaluated. . ΔE * indicates that the larger the value, the better the dyeing.
[Expression 2]
Figure 0003884818
[Transferability]
After dyeing goat hair in the same manner as above, washing it with shampoo, leaving it in place, holding a bundle of hair on a white towel, and assessing the degree of dyeing of the towel after placing a 500 g weight for 5 minutes, the results are shown in Table 1. Shown in The evaluation criteria are as follows.
◎ ・ ・ ・ Pure white ○ ・ ・ ・ If you look closely, you can see faint staining △ ・ ・ ・ Staining is seen, but the degree is light × ・ ・ ・ It is clearly stained, and it is quite heavy [flexible and comb (Street)
In the same manner as described above, the goat hair was dyed, allowed to stand, washed with shampoo, air-dried, and then the texture and the feeling of combing were evaluated by sensory evaluation. The results are shown in Table 1.
◎ ・ ・ ・ The texture is very supple and the comb is very good.
○ ... The texture is supple and the comb is very good.
Δ: The texture is not supple and the combing is not good.
×: The texture is not supple and the combing is not good.
[0022]
[Table 1]
Figure 0003884818
[0023]
It can be seen from Table 1 that the product of the present invention exhibits a sufficient hair dyeing effect. Further, the product of the present invention was able to easily remove stains on the hand skin by washing with soap.
[0024]
Examples 7-9
The following composition has good results such as a hair dyeing effect that can be seen at a glance and an excellent tactile sensation to the hair when used for 5 minutes (25 ° C) after applying to the hair and rinsing. Indicated. Moreover, the adjustment method was performed similarly to Examples 1-3 in any composition, and pH was 3.3. The buffer capacity of the compositions of Examples 7 and 8 was 0.06 gram equivalent / l, and the buffer capacity of the composition of Example 9 was 0.11 gram equivalent / l.
[0025]
Figure 0003884818
[0026]
Figure 0003884818
[0027]
Figure 0003884818
[0028]
【The invention's effect】
The hair dye composition of the present invention has good hair dyeability, little color fading during shampooing, no transferability to clothing, skin, etc., and suppleness and excellentness to hair after hair dyeing It is possible to make it easy.

Claims (1)

(A)酸性染料または天然色素 0.01〜2重量%、(B)芳香族アルコール 0.5〜20重量%、及び(C)グリコール酸アンモニウム塩 0.1〜10重量%を含有し、pHが2.0〜7.5であり、かつ緩衝能が0.01グラム当量/l以上0.5グラム当量/l未満であることを特徴とする染毛剤組成物。(A) an acid dye or natural pigments from 0.01 to 2% by weight, containing (B) an aromatic alcohol 0.5 to 20% by weight, and (C) an ammonium salt of 0.1 to 10 wt% of glycolic acid, A hair dye composition having a pH of 2.0 to 7.5 and a buffer capacity of 0.01 gram equivalent / liter or more and less than 0.5 gram equivalent / liter.
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JP4361197B2 (en) * 2000-07-05 2009-11-11 ホーユー株式会社 Hair dye composition
JP3619988B2 (en) * 2000-09-22 2005-02-16 株式会社加美乃素本舗 Acid hair dye composition
US6776803B2 (en) 2001-02-15 2004-08-17 Kao Corporation Hair dye compositions
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US11744794B2 (en) * 2019-03-07 2023-09-05 Zikui Song Indigo darkener and hair dyeing process

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