JP3669300B2 - N-long chain acylamino acids and detergents - Google Patents
N-long chain acylamino acids and detergents Download PDFInfo
- Publication number
- JP3669300B2 JP3669300B2 JP2001212611A JP2001212611A JP3669300B2 JP 3669300 B2 JP3669300 B2 JP 3669300B2 JP 2001212611 A JP2001212611 A JP 2001212611A JP 2001212611 A JP2001212611 A JP 2001212611A JP 3669300 B2 JP3669300 B2 JP 3669300B2
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- Prior art keywords
- powder
- long chain
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Description
【0001】
【産業上の利用分野】
本発明はN−長鎖アシルアミノ酸及び/又はその塩、及びこれからなる洗浄剤に関する。
【0002】
【従来の技術】
N−長鎖アシルアミノ酸及びその塩は、アミノ酸系アニオン界面活性剤として「アミソフト」(登録商標)の商品名で市販されているものもあるが、これらの化合物におけるN−長鎖アシル基には、ヤシ油脂肪酸、ラウリン酸、ミリスチン酸、ステアリン酸、硬化牛脂とヤシ油との混合脂肪酸等に由来するアシル基が含まれ、アミノ酸には、L−グルタミン酸等が含まれ、そして、塩には、ナトリウム、カリウムなどのアルカリ金属塩、モノエタノールアミン塩などの有機アミン塩、及び塩基性アミノ酸塩が含まれることは既に知られている。また、アミノ酸が酸性アミノ酸である「アミソフト」は、皮膚と同じ弱酸性で、きわめて刺激性が少ないなど皮膚に対する安全性が高く、石けん、シャンプーなどの香粧品のほか、絹、毛織物等の工業用洗剤に使用されていることも既に知られている。
【0003】
ところで、N−長鎖アシルアミノ酸及び/又はその塩、特にN−ラウロイルグルタミン酸のナトリウム塩及びカリウム塩の粉末状のものは、例えば、その溶液の噴霧乾燥によって製造され、洗顔パウダー、入浴剤等の粉末洗浄剤等の原材料としてよく使用されているが、これらの塩については、粉末洗浄剤等を調製する際の粉立(コナダチ)が大きく、またこの粉末洗浄剤を実際に使用する際にも粉立が大きくかつ水への分散性及び水への溶解性が必ずしも良くない、といったことが問題となっている。
【0004】
【発明が解決しようとする課題】
本発明は、粉立性の抑制されたかつ分散性及び溶解性の改善されたN−長鎖アシルアミノ酸及び/又はその塩を提供することを目的とする。
【0005】
【課題を解決するための手段】
本発明者は、上記課題を解決すべく鋭意研究の結果、N−長鎖アシルアミノ酸及び/又はその塩に見られる粉立性と分散性及び溶解性の悪さとは過度の乾燥に起因すること、従って、N−長鎖アシルアミノ酸及び/又はその塩の水分含量を調整すれば、このような粉末を主成分とする粉末洗浄剤の前述した調製時及び使用時の問題点が解消されることを見出し、このような知見に基いて本発明を完成した。
【0006】
すなわち、本発明は、水分含量が3.5〜10重量%であるN−長鎖アシルアミノ酸及び/又はその塩、特にN−ラウロイルグルタミン酸のナトリウム塩及びカリウム塩に関する。また、本発明は、該N−長鎖アシルアミノ酸及び/又はその塩からなる洗浄剤に関する。
【0007】
以下、本発明を逐次説明する。
【0008】
過度の乾燥により水分含量が過度に小さくなった、粉立性の強いかつ分散性及び溶解性の悪い、例えば、市販のN−ラウロイル−L−グルタミン酸のナトリウム塩の粉末の水分含量は通常1重量%強であるが、この水分含量を3.5〜10重量%に調整する(調湿工程)には特別の困難はなく、例えば、調湿すべき粉末を平らに拡げて高湿度の外気に曝すだけでも目的を達成することができるが、より能率よく行なうには、加湿器などを用いて行なう強制調湿によることができる。水分含量が高くなるに従い、粉末の状態はサラサラになり、粉立が減少するが、水分含量が約10重量%を超えるとN−ラウロイルグルタミン酸のナトリウム塩の粉末は粉末性を失い、好ましくはない。
【0009】
N−長鎖アシルアミノ酸及び/又はその塩、特にN−ラウロイルグルタミン酸のナトリウム塩及びカリウム塩の粉末の、これらを原材料として配合する粉末洗浄剤組成物の製造時における粉立性(飛散性)は、もちろん目視によることもできるが、例えば、パウダーテスターによる飛散性テストによると、より正確に測定できる。
【0010】
この粉末洗浄剤組成物の実際使用時における粉立性ももちろん目視によることができるが、また、例えば、訓練されたパネルによる官能検査に付して行なうこともできる。
【0011】
この粉末洗浄剤組成物を実際に洗顔などに使用する時には、予めこれを水(冷水又は温水)に溶解するが、この時に問題となる水への分散性及び溶解性は、少量の水を手の平にとり、これに洗浄剤の粉末を加えてみることによって簡便に検査することができるが、より正確に測定するには水に対する溶解速度(溶解時間)を測定することによることができる。因みに、N−ラウロイルグルタミン酸のナトリウム塩及びカリウム塩の粉末の、過度に乾燥したものは、これを水に溶解すべく水に加えても、いわゆるダマを形成して水への分散性が悪く、延いては溶解性が悪い。
【0012】
粉末洗浄剤組成物の組成は、所定の水分含量のN−長鎖アシルアミノ酸及び/又はその塩、特にN−ラウロイルグルタミン酸ナトリウム塩及び/又はカリウム塩を原材料として使用する他には特別の制限はなく、粉末洗浄剤として通常使用される洗顔パウダー、シャンプーなどの原材料、にごり湯などの入浴剤の原材料等を適宜所望により使用できることはもちろんである。
【0013】
【実施例】
以下、本発明を実施例により更に説明する。
【0014】
実施例1(水分含量と取扱い物性)
市販のN−ラウロイル−L−グルタミン酸ナトリウム及びカリウムのサンプルを4種採取し、これらのサンプルの水分含量を調整し、水分含量と粉立性(飛散性)、分散性及び溶解性との関係を検査した。結果を第1表 (a)〜(d) に示す。
【0015】
【表1】
【0016】
なお、この検査において、水分含量はカールフィッシャー法により測定し、粉立性(飛散性)はパウダーテスターによる飛散性テストにより測定し、そして水に対す溶解性は水に対する溶解時間(1.5 g/100ml 水)により測定し、水に対する分散性は手の平に粉末(約1g)をとり、少量の水を加えてもむことにより観察した。
【0017】
溶解速度は溶解時間 300秒以内で良好であると評価でき、飛散性は70以上が良好であると評価でき、そして分散性は手の平でもみ、ダマにならなければ良好(○)、ダマが少量生じたときは許容できる(△)、多量生じたときは不良(×)と評価できる。
【0018】
実施例2(洗浄剤組成物)
下記第2〜5表に示す組成で、各表表示の原材料を粉体混合機でよく混練して洗顔パウダー、粉末歯みがき、台所クレンザー及び入浴剤を調製した。各表で、組成比は重量部をもって示す。
【0019】
【表2】
【0020】
【表3】
【0021】
【表4】
【0022】
【表5】
【0023】
これらの製品は、製造時(調整時)及び使用時における取扱い物性において優れていた。
【0024】
【発明の効果】
本発明により取扱い特性(粉立性(飛散性)、分散性及び溶解性)に優れた、N−長鎖アシルアミノ酸及び/又はその塩、特にN−ラウロイルグタルミン酸のナトリウム塩及びカリウム塩が容易に提供でき、延いては、そのような特性に優れたN−ラウロイルグルタミン酸ナトリウム及びカリウム塩を原材料とする洗浄剤組成物が容易に提供されるところとなった。[0001]
[Industrial application fields]
The present invention relates to an N-long chain acylamino acid and / or a salt thereof, and a detergent comprising the same.
[0002]
[Prior art]
N-long chain acylamino acids and salts thereof are commercially available as amino acid anionic surfactants under the trade name “Amisoft” (registered trademark), but N-long chain acyl groups in these compounds include , Coconut oil fatty acid, lauric acid, myristic acid, stearic acid, acyl group derived from mixed fatty acid of hardened beef tallow and coconut oil, etc., amino acids include L-glutamic acid, etc., and salts include Alkali metal salts such as sodium and potassium, organic amine salts such as monoethanolamine salts, and basic amino acid salts are already known. In addition, Amisoft, whose amino acid is an acidic amino acid, has the same weak acidity as the skin and is extremely safe for the skin as it is extremely irritating. In addition to cosmetics such as soap and shampoo, it is used for industrial purposes such as silk and wool. It is already known that it is used in detergents.
[0003]
By the way, N-long-chain acylamino acids and / or salts thereof, in particular, sodium and potassium salts of N-lauroylglutamic acid, which are in powder form, are produced, for example, by spray-drying the solution. It is often used as a raw material for powder cleaners, etc., but for these salts, the powdered powder (Konadachi) is large when preparing powder cleaners, etc., and when this powder cleaner is actually used The problem is that the powder is large and the dispersibility in water and the solubility in water are not always good.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide an N-long-chain acylamino acid and / or a salt thereof with suppressed powderiness and improved dispersibility and solubility.
[0005]
[Means for Solving the Problems]
As a result of diligent research to solve the above problems, the present inventors have found that the powderiness, dispersibility, and poor solubility seen in N-long chain acylamino acids and / or salts thereof are caused by excessive drying. Therefore, by adjusting the water content of N-long chain acylamino acids and / or salts thereof, the above-mentioned problems during preparation and use of powder detergents based on such powders can be eliminated. And the present invention was completed based on such knowledge.
[0006]
That is, the present invention relates to an N-long chain acylamino acid having a water content of 3.5 to 10% by weight and / or a salt thereof, particularly a sodium salt and a potassium salt of N-lauroylglutamic acid. The present invention also relates to a detergent comprising the N-long chain acylamino acid and / or a salt thereof.
[0007]
Hereinafter, the present invention will be described sequentially.
[0008]
The water content of the powder of sodium salt of commercially available N-lauroyl-L-glutamic acid is usually 1 wt. However, there is no particular difficulty in adjusting the moisture content to 3.5 to 10% by weight (humidity adjustment process). For example, the powder to be conditioned should be spread evenly into high humidity outside air. The purpose can be achieved only by exposure, but in order to perform more efficiently, forced humidity control using a humidifier or the like can be used. As the water content increases, the state of the powder becomes smooth and powdering decreases. However, when the water content exceeds about 10% by weight, the sodium salt powder of N-lauroyl glutamic acid loses its powder property, which is not preferable. .
[0009]
N-long-chain acylamino acids and / or salts thereof, especially powders of sodium and potassium salts of N-lauroylglutamic acid, and powderiness (scattering property) at the time of production of a powder detergent composition containing these as raw materials is Of course, it can also be visually observed, but for example, it can be measured more accurately by a scattering test using a powder tester.
[0010]
Needless to say, the powderiness of the powder cleaning composition during actual use can be visually observed, but can also be subjected to, for example, a sensory test using a trained panel.
[0011]
When this powder cleaning composition is actually used for face washing, it is dissolved in water (cold water or hot water) in advance. The dispersibility and solubility in water, which is a problem at this time, is small in water. In addition, it can be easily inspected by adding a detergent powder thereto, but more accurate measurement can be achieved by measuring the dissolution rate (dissolution time) in water. Incidentally, the excessively dried powder of sodium salt and potassium salt of N-lauroyl glutamic acid, when added to water to dissolve it in water, forms so-called lumps and is poorly dispersible in water. As a result, the solubility is poor.
[0012]
The composition of the powder detergent composition is not particularly limited except that N-long-chain acylamino acids and / or salts thereof, particularly N-lauroyl glutamate sodium salt and / or potassium salt having a predetermined moisture content are used as raw materials. Of course, raw materials such as facial cleansing powder and shampoo that are usually used as powder cleaning agents, raw materials for bathing agents such as nigari hot water, and the like can be used as desired.
[0013]
【Example】
The present invention will be further described below with reference to examples.
[0014]
Example 1 (water content and handling properties)
Four samples of commercially available sodium and potassium N-lauroyl-L-glutamate were collected, the water content of these samples was adjusted, and the relationship between the water content and powderiness (scatterability), dispersibility and solubility Inspected. The results are shown in Table 1 (a) to (d).
[0015]
[Table 1]
[0016]
In this test, the water content is measured by the Karl Fischer method, the powderiness (scatterability) is measured by a scattering test using a powder tester, and the solubility in water is the dissolution time in water (1.5 g The water dispersibility was observed by taking a powder (about 1 g) in the palm of the hand and adding a small amount of water.
[0017]
Dissolution rate can be evaluated as good within 300 seconds, scattering property can be evaluated as 70 or better, and dispersibility can be evaluated in the palm of the hand. When it occurs, it is acceptable (Δ), and when it occurs in large quantities, it can be evaluated as defective (×).
[0018]
Example 2 (cleaning agent composition)
With the compositions shown in Tables 2 to 5 below, the raw materials shown in each table were well kneaded with a powder mixer to prepare a face washing powder, a powder toothpaste, a kitchen cleanser and a bath preparation. In each table, the composition ratio is expressed in parts by weight.
[0019]
[Table 2]
[0020]
[Table 3]
[0021]
[Table 4]
[0022]
[Table 5]
[0023]
These products were excellent in physical properties at the time of manufacture (adjustment) and use.
[0024]
【The invention's effect】
According to the present invention, N-long chain acylamino acids and / or salts thereof, particularly sodium salts and potassium salts of N-lauroyl glutamic acid, which are excellent in handling characteristics (powderability (scatterability), dispersibility and solubility), are obtained. A detergent composition that can be easily provided and, as a raw material, uses sodium and potassium salts of N-lauroyl glutamate having excellent properties as described above.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001212611A JP3669300B2 (en) | 2001-07-12 | 2001-07-12 | N-long chain acylamino acids and detergents |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001212611A JP3669300B2 (en) | 2001-07-12 | 2001-07-12 | N-long chain acylamino acids and detergents |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25808692A Division JP3472314B2 (en) | 1992-09-28 | 1992-09-28 | Powder detergent composition |
Publications (2)
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JP2002129187A JP2002129187A (en) | 2002-05-09 |
JP3669300B2 true JP3669300B2 (en) | 2005-07-06 |
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JP2001212611A Expired - Fee Related JP3669300B2 (en) | 2001-07-12 | 2001-07-12 | N-long chain acylamino acids and detergents |
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Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030069076A (en) * | 2002-02-15 | 2003-08-25 | 아지노모토 가부시키가이샤 | Surfactants |
JP4501534B2 (en) * | 2004-05-31 | 2010-07-14 | 日油株式会社 | Solid detergent composition |
JP4770286B2 (en) * | 2005-06-20 | 2011-09-14 | 味の素株式会社 | Method for producing crystals of N-long chain acylglutamic acid and / or salt thereof |
JP6093740B2 (en) * | 2014-10-20 | 2017-03-08 | 株式会社ファンケル | Powder skin cleanser |
JP7352346B2 (en) * | 2018-12-06 | 2023-09-28 | アース製薬株式会社 | bath salt composition |
JP6759395B2 (en) * | 2019-03-04 | 2020-09-23 | 株式会社ファンケル | Powdered skin cleanser |
-
2001
- 2001-07-12 JP JP2001212611A patent/JP3669300B2/en not_active Expired - Fee Related
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