JP4249846B2 - Fatty acid soap - Google Patents
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- JP4249846B2 JP4249846B2 JP11982399A JP11982399A JP4249846B2 JP 4249846 B2 JP4249846 B2 JP 4249846B2 JP 11982399 A JP11982399 A JP 11982399A JP 11982399 A JP11982399 A JP 11982399A JP 4249846 B2 JP4249846 B2 JP 4249846B2
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Description
【０００１】
【発明の属する技術分野】
本発明は特定の脂肪酸組成の脂肪酸石鹸及びそれを含有する洗浄剤に関する。
【０００２】
【従来の技術】
石鹸は洗浄剤としては最古の部類に入るものであり、洗浄力その他の性能の向上を求めて、古くから改良が繰り返されてきた。スルホネートやサルフェート等の硫酸塩系の合成洗浄剤が開発された後も、この状況は変わっていない。石鹸の性能は脂肪酸組成に由来する割合が高いので、原料油脂の選定、配合、水素添加（硬化）の程度、精製の程度等の様々な技術を組み合わせ、最適の脂肪酸組成を求める研究は依然として盛んである。
【０００３】
【発明が解決しようとする課題】
本発明者は、特定の脂肪酸組成を有する脂肪酸混合物から得られた脂肪酸石鹸が、従来の脂肪酸石鹸に比べて、衣類に対する黄ばみの防止や、水に対する低温溶解性等に優れる性能を発揮することを見出し、本発明を完成させるに至った。
【課題を解決するための手段】
即ち、本発明は、脂肪酸石鹸の全量に対して、ラウリン酸石鹸６〜２０重量％、パルミチン酸石鹸６〜１８重量％、リノレン酸石鹸０．５〜２．５重量％及びステアリン酸石鹸を８〜１５重量％を必須の成分として含有する脂肪酸石鹸である。
【０００４】
【発明の実施の形態】
本発明の脂肪酸石鹸は、ラウリン酸石鹸を６〜２０重量％、パルミチン酸石鹸を６〜１８重量％、リノレン酸石鹸を０．５〜２．５重量％、及びステアリン酸石鹸を８〜１５重量％必須成分として含有するものである。ラウリン酸石鹸の量が６重量％に満たないと、脂肪酸の融点が上がり、脂肪酸石鹸の水に対する溶解性が低下する。２０重量％を超えると、脂肪酸石鹸の洗浄力が低下する。パルミチン酸石鹸の量が６重量％に満たないと、特にポリエステル布に対する黄ばみを抑制することができず、１８重量％を超えると、脂肪酸の融点が上がり、脂肪酸石鹸の水に対する溶解性が低下する。リノレン酸石鹸の量が０．５重量％に満たないと、脂肪酸の融点が上がり、脂肪酸石鹸の水に対する溶解性が低下し、２．５重量％を超えると、衣料の黄ばみを抑制することができない。ステアリン酸石鹸の量が８重量％に満たないと、脂肪酸石鹸の洗浄力が低下する場合があり、１５重量％を超えると、脂肪酸の融点が上がり、脂肪酸石鹸の水に対する溶解性が低下する場合がある。
本発明の脂肪酸石鹸は、オレイン酸石鹸を３８〜５５重量％、又は、リノール酸石鹸を１０〜２０重量％含むことが好ましい。オレイン酸石鹸の量が３８重量％に満たないと、脂肪酸石鹸の洗浄力が低下する場合があり、５５重量％を超えると、衣料の黄ばみを抑制することができない場合がある。リノール酸石鹸の量が１０重量％に満たないと、脂肪酸の融点が上がり、脂肪酸石鹸の水に対する溶解性が低下する場合があり、２０重量％を超えると、脂肪酸石鹸の洗浄力が低下するか、衣料の黄ばみを抑制することができない場合がある。
【０００５】
本発明の脂肪酸石鹸の原料となる脂肪酸は、通常天然油脂から得られる脂肪酸を加工・配合して使用する。天然油脂としては例えば、アマニ油、オリーブ油、カカオ脂、ゴマ油、コメヌカ油、サフラワー油、大豆油、ツバキ油、コーン油、ナタネ油、パーム油、パーム核油、ひまし油、ひまわり油、綿実油、ヤシ油等の植物性油脂、牛脂、豚脂、乳脂、魚油、鯨油等の動物性油脂が挙げられる。これらの油脂を、必要に応じて水素添加（硬化）し、加水分解して脂肪酸を得、これを適宜配合すれば本発明の脂肪酸石鹸の原料となる脂肪酸を得ることができる。本発明の脂肪酸石鹸にするためには、脂肪酸組成が前記の範囲内に入るように油脂の種類、水素添加の程度等を選択して複数の油脂を混合して使用する。
【０００６】
水素添加は公知の方法によればよく、通常は水素添加触媒としてニッケル、コバルト、銅、白金、パラジウム等が使用され、担体としてはけいそう土が用いられる。水素添加された油脂は、公知の方法により脂肪酸とグリセリンに加水分解され、得られた脂肪酸を精製、配合して本発明の脂肪酸石鹸の原料となる脂肪酸を得ることができる。
上記のようにして得られた脂肪酸を、塩基、例えば、水酸化ナトリウム、水酸化カリウム等のアルカリ金属水酸化物；アンモニア；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、テトラキス（２−ヒドロキシプロピル）エチレンジアミン等のアルカノールアミン等の塩基で中和すれば、本発明の脂肪酸石鹸が得られる。
【０００７】
本発明の脂肪酸石鹸は、上記のような特定の組成からなるため、従来の脂肪酸石鹸の欠点である、繰り返し洗濯による衣料の黄ばみを抑制し、且つ、低温でも水によく溶けるという特性を有する。
本発明の脂肪酸石鹸を洗浄剤として使用する場合は、その他の成分を配合することができる。例えば、アルコールエーテル系、エステル系、脂肪酸ジエタノールアミド系等の非イオン界面活性剤、アルキルベンゼンスルホン酸系、アルキルエーテルサルフェート系、アルキルサルフェート系、アルキルスルホン酸系等のアニオン界面活性剤、カチオン界面活性剤、カルボベタイン系、スルホベタイン系等の両性界面活性剤、アルキルアミンオキサイド等の半極性界面活性剤、無機塩類、金属イオン捕捉剤、再汚染防止剤、ポリカルボキシレート、酵素、塩素捕捉剤、漂白剤、ケーキング防止剤、酵素活性化剤、酸化防止剤、防腐剤、色素、香料等を配合することができる。
【０００８】
無機塩類としては例えば、珪酸ナトリウム、珪酸カリウム、炭酸ナトリウム、炭酸カリウム、炭酸水素ナトリウム、炭酸水素カリウム、硫酸ナトリウム、硫酸カリウム、重炭酸ナトリウム等が挙げられる。金属イオン捕捉剤としては例えば、トリポリリン酸塩、ピロリン酸塩、オルトリン酸塩、ヘキサメタリン酸塩、アルミノ珪酸塩、ニトリロ三酢酸塩、エチレンジアミン四酢酸塩、クエン酸塩、イソクエン酸塩、ポリアセタールカルボン酸塩、アスパラギン酸ジ酢酸塩、グルタミン酸ジ酢酸塩、ヒドロキシイミノジコハク酸塩、イミノジコハク酸塩、エチレンジアミンジコハク酸塩、ポリアスパラギン酸塩、ポリグリオキシル酸塩等が挙げられる。再汚染防止剤としては例えば、ポリエチレングリコール、ポリビニルアルコール、ポリビニルピロリドン、カルボキシメチルセルロース等が挙げられる。ポリカルボキシレートとしては例えば、ポリアクリル酸（塩）、アクリル酸−アリルアルコール共重合体（塩）、アクリル酸−マレイン酸共重合体（塩）、ポリヒドロキシアクリル酸（塩）、ポリテトラメチレン−１，２−ジカルボン酸（塩）等が挙げられる。酵素としては例えば、セルラーゼ、プロテアーゼ、アミラーゼ、リパーゼ、ヘミセルラーゼ、グリコシダーゼ、グルコースオキシターゼ、コレステロールオキシターゼ等が挙げられる。塩素捕捉剤としては例えば、硫酸アンモニウム、尿素、塩酸グアジニン、炭酸グアジニン、スルファミン酸グアジニン、二酸化チオ尿素、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等が挙げられる。漂白剤としては例えば、過炭酸塩、過ほう酸塩、スルホン化フタロシアニン塩、過酸化水素等が挙げられる。ケーキング防止剤としては例えば、パラトルエンスルホン酸塩、キシレンスルホン酸塩、酢酸塩、スルホコハク酸塩、タルク、微粉末シリカ、粘土、酸化マグネシウム等が挙げられる。酸化防止剤としては例えば、ｔｅｒｔ．−ブチルヒドロキシトルエン（以下、「ｔｅｒｔ．−ブチル」を「ｔ−ブチル」と略記する。）、４，４’−ブチリデンビス−（６−ｔ−ブチル−３−メチルフェノール）、２，２’−ブチリデンビス−（６−ｔ−ブチル−３−メチルフェノール）、モノスチレン化クレゾール、ジスチレン化クレゾール、モノスチレン化フェノール、ジスチレン化フェノール、１，１’−ビス−（４−ヒドロキシフェニル）シクロヘキサン等が挙げられる。
【０００９】
本発明の脂肪酸石鹸を粉末化する方法は特に限定されず、従来の高密度洗剤の製造方法などによればよい。高密度化の方法としては、例えば、噴霧乾燥粒子にスラリー化した脂肪酸石鹸その他の成分を噴霧して高密度化する方法、吸油担体を含む粉体にスラリー化した脂肪酸石鹸その他の成分を吸蔵させながら高密度化する方法等が挙げられる。このように高密度化した場合、粉末状の脂肪酸石鹸組成物の粉末物性は、通常、平均粒径が２００〜１，０００μｍ、嵩密度は０．５〜１．２ｇ／ｃｍ3程度である。
本発明の脂肪酸石鹸の具体的用途は特に限定されず、いかなる洗浄用途にも使用可能であるが、特に衣料用洗浄剤として使用するのに適している。
【００１０】
【実施例】
以下、実施例により本発明を更に具体的に説明する。尚、実施例中、部及び％は特に記載がない限り重量基準である。
数種類の脂肪酸を混合し塩基で中和して、以下の表1に示す脂肪酸組成を有する脂肪酸石鹸（ナトリウム石鹸／カリウム石鹸＝７／３）組成物を得た。
【００１１】
【表１】
試験１：黄ばみ評価試験
以下の要領で黄ばみ評価試験を行った。
前処理として、ミニミニウオッシャーＮＡ−３２（松下電器産業製）に、蒸留水７リットルを入れ、トリポリリン酸ナトリウム４．７ｇと第２級アルコールエトキシレート（アルキル基の炭素数１３〜１４、ＨＬＢ＝１３．５）２．８ｇを４０℃で溶解させた。溶解後のこの洗剤液に下記の試験布を入れ、それぞれ１０分間洗浄し、泡が消えるまですすぎを行った。
前処理を行った2種類の試験布を用いて、以下の洗浄から乾燥までのフローを１工程としてこれを２０回繰り返して洗浄した。尚、洗浄条件及び使用した洗浄剤の組成は下記の通りである。
【００１３】
＜洗浄工程＞
洗浄（１０分間）
↓
脱水（絞り率１２０％）
↓
すすぎ（３分間）
↓ ２回繰り返し
脱水（絞り率１２０％）
↓
乾燥（６０分間、衣料用乾燥機を使用。）
【００１４】
＜洗浄条件＞
洗濯機：ターゴットメーター（１２０ｒｐｍ）
温度 ：３０℃
硬度 ：５０ｐｐｍ（人工硬水；炭酸カルシウム換算）
洗浄剤量：１ｇ／リットル
試験布▲１▼：綿金巾３号布、１５ｃｍ×２４ｃｍ ５枚
試験布▲２▼：ポリエステルニット布、１５ｃｍ×１２ｃｍ ４枚
浴比 ： １：３０
【００１５】
＜洗浄剤組成＞
脂肪酸石鹸 ６０％
（表1に示す実施例1〜９、比較例1〜３のもの）
Ａ型ゼオライト １０％
層状珪酸塩* １０％
珪酸塩（２号珪酸ナトリウム) ４％
炭酸ナトリウム(見かけ比重１．２) ５．５％
カルボキシメチルセルロース ０．５％
（エーテル化度：０５．±０．０５）
水分 １０％
＊：層状珪酸塩は、Ｎａ2Ｓｉ2Ｏ5で表わされ、商品名ＳＫＳ−６、ヘキストジャパン製、見かけ比重５００ｇ／Ｌ、粒度分布ｄ50＝１５０μｍである。
【００１６】
＜黄ばみの評価＞
実施例1〜９、比較例1〜３のそれぞれの組成の洗浄剤について、上記の繰り返し洗浄の操作を行った2種類の試験布を、それぞれ４０℃、３０％ＲＨに３ケ月の間放置し、各試験布の黄ばみの状態を観察した。黄ばみの評価は色差測定（ｂ値）により次の式によって求めた。
Δｂ＝ｂ−ｂ0
Δｂ：黄ばみの度合い（Δｂが大きいほど黄変が著しい。）
ｂ0：前処理後のｂ値
ｂ：繰り返し洗浄及び放置した後の布のｂ値
これらの評価結果を表2に示す。
【００１７】
試験２：脂肪酸の融点
オートマティックメルティングコントローラーＣＸ８７１Ａ（エレックスサイエンティフィック製）を使用して、表１に示す実施例1〜９、比較例1〜３のそれぞれの組成の脂肪酸の融点を測定した。これらの測定結果を表2に示す。
【００１８】
試験３：溶解性の評価
実施例1〜９、比較例1〜３のそれぞれの組成の脂肪酸石鹸を、下記の条件で５℃及び１０℃の水に溶解した後、１００メッシュのふるいを通し、残分を１０５℃で３時間乾燥後、その重量を測定して溶解性を評価した。その結果を表2に示す。
＜条件＞
試験機：ミニミニウォッシャーＮＡ−３２（松下電器産業製）
石鹸量：５ｇ／５リットル
温度 ：５℃及び１０℃
時間 ：３分間
使用水：水道水
【００１９】
【表２】
【発明の効果】
本発明の効果は、特定の脂肪酸組成を有する脂肪酸石鹸を提供したことにある。本発明によれば、布に対する黄ばみの付着を防止し、且つ洗浄力に優れた脂肪酸石鹸を得ることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fatty acid soap having a specific fatty acid composition and a cleaning agent containing the same.
[0002]
[Prior art]
Soap is one of the oldest cleaning agents, and improvements have been repeated for a long time in search of improvements in detergency and other performances. This situation has not changed even after the development of sulfate-based synthetic detergents such as sulfonates and sulfates. Since the performance of soap is highly derived from the fatty acid composition, research to find the optimal fatty acid composition by combining various technologies such as selection and blending of raw oils and fats, the degree of hydrogenation (curing), and the degree of purification is still active. It is.
[0003]
[Problems to be solved by the invention]
The present inventor has shown that a fatty acid soap obtained from a fatty acid mixture having a specific fatty acid composition exhibits performances such as prevention of yellowing of clothes and excellent low-temperature solubility in water as compared with conventional fatty acid soaps. The headline and the present invention have been completed.
[Means for Solving the Problems]
That is, according to the present invention, 6 to 20% by weight of lauric acid soap, 6 to 18% by weight of palmitic acid soap, 0.5 to 2.5% by weight of linolenic acid soap and 8 of stearic acid soap with respect to the total amount of fatty acid soap. It is a fatty acid soap containing -15% by weight as an essential component.
[0004]
DETAILED DESCRIPTION OF THE INVENTION
The fatty acid soap of the present invention comprises 6-20% by weight of lauric soap, 6-18% by weight of palmitic acid soap, 0.5-2.5% by weight of linolenic acid soap, and 8-15% by weight of stearic acid soap. % As an essential component. If the amount of the lauric soap is less than 6% by weight, the melting point of the fatty acid increases and the solubility of the fatty acid soap in water decreases. If it exceeds 20% by weight, the detergency of the fatty acid soap decreases. If the amount of palmitic acid soap is less than 6% by weight, yellowing of the polyester cloth cannot be particularly suppressed, and if it exceeds 18% by weight, the melting point of the fatty acid increases and the solubility of the fatty acid soap in water decreases. . If the amount of linolenic acid soap is less than 0.5% by weight, the melting point of the fatty acid increases, the solubility of the fatty acid soap in water decreases, and if it exceeds 2.5% by weight, the yellowing of the clothing can be suppressed. Can not. If the amount of stearic acid soap is less than 8% by weight, the detergency of the fatty acid soap may decrease, and if it exceeds 15% by weight, the melting point of the fatty acid increases and the solubility of the fatty acid soap in water decreases. There is.
Fatty acid soap of the present invention, 38 to 55% by weight of o maleic acid soap, or preferably contains linoleic acid soap 10 to 20 wt%. If the amount of O maleic acid soap is less than 38 wt%, there is a case where detergency fatty acid soap is lowered, if it exceeds 55 wt%, it may not be possible to suppress the yellowing of the clothing. If the amount of linoleic acid soap is less than 10% by weight, the melting point of the fatty acid may increase and the solubility of the fatty acid soap in water may decrease. If the amount exceeds 20% by weight, will the detergency of the fatty acid soap decrease? The yellowing of clothing may not be suppressed.
[0005]
The fatty acid used as the raw material of the fatty acid soap of the present invention is usually processed and blended with a fatty acid obtained from natural fats and oils. Examples of natural fats and oils include linseed oil, olive oil, cacao butter, sesame oil, rice bran oil, safflower oil, soybean oil, camellia oil, corn oil, rapeseed oil, palm oil, palm kernel oil, castor oil, sunflower oil, cottonseed oil, palm Examples include vegetable oils such as oil, animal fats such as beef tallow, pork tallow, milk fat, fish oil, whale oil and the like. These fats and oils are hydrogenated (cured) as necessary, hydrolyzed to obtain fatty acids, and if these are blended appropriately, fatty acids serving as the raw material for the fatty acid soap of the present invention can be obtained. In order to obtain the fatty acid soap of the present invention, a plurality of fats and oils are mixed and used by selecting the type of fat and oil, the degree of hydrogenation, etc. so that the fatty acid composition falls within the above range.
[0006]
The hydrogenation may be carried out by a known method. Usually, nickel, cobalt, copper, platinum, palladium or the like is used as a hydrogenation catalyst, and diatomaceous earth is used as a carrier. The hydrogenated fat is hydrolyzed into a fatty acid and glycerin by a known method, and the obtained fatty acid can be purified and blended to obtain a fatty acid that is a raw material for the fatty acid soap of the present invention.
The fatty acid obtained as described above is converted into a base, for example, an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide; ammonia; monoethanolamine, diethanolamine, triethanolamine, tetrakis (2-hydroxypropyl) ethylenediamine. The fatty acid soap of the present invention can be obtained by neutralizing with a base such as alkanolamine.
[0007]
Since the fatty acid soap of the present invention has the specific composition as described above, it has the characteristics that it suppresses yellowing of clothing due to repeated washing, which is a drawback of the conventional fatty acid soap, and dissolves well in water even at low temperatures.
When the fatty acid soap of the present invention is used as a cleaning agent, other components can be blended. For example, nonionic surfactants such as alcohol ethers, esters and fatty acid diethanolamides, anionic surfactants such as alkylbenzene sulfonic acids, alkyl ether sulfates, alkyl sulfates and alkyl sulfonic acids, cationic surfactants , Amphoteric surfactants such as carbobetaines and sulfobetaines, semipolar surfactants such as alkylamine oxides, inorganic salts, metal ion scavengers, recontamination inhibitors, polycarboxylates, enzymes, chlorine scavengers, bleaching An agent, an anti-caking agent, an enzyme activator, an antioxidant, an antiseptic, a pigment, a fragrance and the like can be blended.
[0008]
Examples of inorganic salts include sodium silicate, potassium silicate, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium sulfate, potassium sulfate, sodium bicarbonate and the like. Examples of metal ion scavengers include tripolyphosphate, pyrophosphate, orthophosphate, hexametaphosphate, aluminosilicate, nitrilotriacetate, ethylenediaminetetraacetate, citrate, isocitrate, polyacetal carboxylate Aspartic acid diacetate, glutamic acid diacetate, hydroxyiminodisuccinate, iminodisuccinate, ethylenediaminedisuccinate, polyaspartate, polyglyoxylate and the like. Examples of the recontamination preventing agent include polyethylene glycol, polyvinyl alcohol, polyvinyl pyrrolidone, carboxymethyl cellulose and the like. Examples of the polycarboxylate include polyacrylic acid (salt), acrylic acid-allyl alcohol copolymer (salt), acrylic acid-maleic acid copolymer (salt), polyhydroxyacrylic acid (salt), polytetramethylene- 1,2-dicarboxylic acid (salt) etc. are mentioned. Examples of the enzyme include cellulase, protease, amylase, lipase, hemicellulase, glycosidase, glucose oxidase, cholesterol oxidase and the like. Examples of the chlorine scavenger include ammonium sulfate, urea, guanidine hydrochloride, guanidine carbonate, guanidine sulfamate, thiourea dioxide, monoethanolamine, diethanolamine, and triethanolamine. Examples of the bleaching agent include percarbonate, perborate, sulfonated phthalocyanine salt, hydrogen peroxide and the like. Examples of the anti-caking agent include p-toluenesulfonate, xylenesulfonate, acetate, sulfosuccinate, talc, fine powder silica, clay, magnesium oxide and the like. Examples of the antioxidant include tert. -Butylhydroxytoluene (hereinafter, "tert.-butyl" is abbreviated as "t-butyl"), 4,4'-butylidenebis- (6-tert-butyl-3-methylphenol), 2,2'- Butylidenebis- (6-tert-butyl-3-methylphenol), monostyrenated cresol, distyrenated cresol, monostyrenated phenol, distyrenated phenol, 1,1′-bis- (4-hydroxyphenyl) cyclohexane, etc. It is done.
[0009]
The method for pulverizing the fatty acid soap of the present invention is not particularly limited, and may be a conventional method for producing a high-density detergent. Examples of the densification method include, for example, a method of spraying and drying the slurry fatty acid soap and other components on the spray-dried particles, and storing the slurry of fatty acid soap and other components in the powder containing the oil-absorbing carrier. However, there is a method for increasing the density. When the density is increased in this way, the powder physical properties of the powdered fatty acid soap composition are usually about 200 to 1,000 μm in average particle diameter and about 0.5 to 1.2 g / cm 3 in bulk density.
The specific use of the fatty acid soap of the present invention is not particularly limited and can be used for any cleaning application, but is particularly suitable for use as a cleaning agent for clothing.
[0010]
【Example】
Hereinafter, the present invention will be described more specifically with reference to examples. In the examples, parts and% are based on weight unless otherwise specified.
Several types of fatty acids were mixed and neutralized with a base to obtain a fatty acid soap (sodium soap / potassium soap = 7/3) composition having the fatty acid composition shown in Table 1 below.
[0011]
[Table 1]
Test 1: Yellowing evaluation test A yellowing evaluation test was performed in the following manner.
As a pre-treatment, 7 liters of distilled water is put into a mini mini washer NA-32 (manufactured by Matsushita Electric Industrial Co., Ltd.), 4.7 g of sodium tripolyphosphate and secondary alcohol ethoxylate (alkyl group having 13 to 14 carbon atoms, HLB = 13). .5) 2.8 g was dissolved at 40 ° C. The following test cloths were put into this detergent solution after dissolution, washed for 10 minutes, and rinsed until the bubbles disappeared.
Using the two types of pre-treated test cloths, the following flow from washing to drying was taken as one step, and this was repeated 20 times for washing. The cleaning conditions and the composition of the cleaning agent used are as follows.
[0013]
<Washing process>
Wash (10 minutes)
↓
Dehydration (drawing rate 120%)
↓
Rinse (3 minutes)
↓ Dehydration twice (drawing rate 120%)
↓
Drying (use clothes dryer for 60 minutes)
[0014]
<Cleaning conditions>
Washing machine: Targot meter (120rpm)
Temperature: 30 ° C
Hardness: 50ppm (artificial hard water; converted to calcium carbonate)
Amount of cleaning agent: 1 g / liter test cloth (1): Cotton width 3 cloth, 15 cm × 24 cm 5 sheets Test cloth (2): Polyester knit cloth, 15 cm × 12 cm 4 sheets Bath ratio: 1:30
[0015]
<Cleaning agent composition>
Fatty acid soap 60%
(Examples 1 to 9 and Comparative Examples 1 to 3 shown in Table 1)
Type A zeolite 10%
Layered silicate * 10%
Silicate (No. 2 sodium silicate) 4%
Sodium carbonate (apparent specific gravity 1.2) 5.5%
Carboxymethylcellulose 0.5%
(Degree of etherification: 05. ± 0.05)
10% moisture
*: The layered silicate is represented by Na 2 Si 2 O 5 and has a trade name SKS-6, manufactured by Hoechst Japan, an apparent specific gravity of 500 g / L, and a particle size distribution d 50 = 150 μm.
[0016]
<Evaluation of yellowing>
For the cleaning agents having the compositions of Examples 1 to 9 and Comparative Examples 1 to 3, the two types of test cloths subjected to the above-described repeated cleaning operation were left at 40 ° C. and 30% RH for 3 months, respectively. The yellowing state of each test cloth was observed. Evaluation of yellowing was calculated | required by the following formula by the color difference measurement (b value).
Δb = b−b 0
Δb: degree of yellowing (the larger Δb, the more yellowing is)
b 0 : b value after pretreatment b: b value of fabric after repeated washing and standing Table 2 shows the evaluation results.
[0017]
Test 2: Melting | fusing point of fatty acid Using an automatic melting controller CX871A (manufactured by Elex Scientific), melting points of fatty acids having respective compositions of Examples 1 to 9 and Comparative Examples 1 to 3 shown in Table 1 were measured. Table 2 shows the measurement results.
[0018]
Test 3: Evaluation of solubility The fatty acid soaps of the compositions of Examples 1 to 9 and Comparative Examples 1 to 3 were dissolved in water at 5 ° C and 10 ° C under the following conditions, and then passed through a 100 mesh sieve. The residue was dried at 105 ° C. for 3 hours, and its weight was measured to evaluate the solubility. The results are shown in Table 2.
<Conditions>
Testing machine: Mini mini washer NA-32 (Made by Matsushita Electric Industrial Co., Ltd.)
Soap amount: 5 g / 5 liter Temperature: 5 ° C. and 10 ° C.
Time: 3 minutes Water used: Tap water [0019]
[Table 2]
【The invention's effect】
The effect of the present invention is to provide a fatty acid soap having a specific fatty acid composition. ADVANTAGE OF THE INVENTION According to this invention, the fatty acid soap which prevented the adhesion of yellowing with respect to cloth and was excellent in the detergency can be obtained.
Claims (3)
Priority Applications (1)
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|---|---|---|---|
| JP11982399A JP4249846B2 (en) | 1999-04-27 | 1999-04-27 | Fatty acid soap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11982399A JP4249846B2 (en) | 1999-04-27 | 1999-04-27 | Fatty acid soap |
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|---|---|
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| JP4249846B2 true JP4249846B2 (en) | 2009-04-08 |
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