JP3253271B2 - Liquid detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid detergent composition which is excellent in removing bubbles during rinsing.

[0002]

2. Description of the Related Art Recently,
Nonionic surfactants have attracted attention as an active agent that is advantageous for downsizing, and are being actively used. However, conventional liquid detergent compositions using nonionic surfactants include:
There is a problem that bubble removal during rinsing is poor, and development of a liquid detergent composition with improved rinsing properties without impairing the detergency has been desired.

[0003]

Means for Solving the Problems The present inventors have found that by combining two specific nonionic surfactants, the foaming during rinsing is excellent.

That is, the present invention provides: (a) a nonionic surfactant represented by the following general formula (I):
And R ¹ O (EO) _p (PO) _q (EO) _r H (I) [R ¹ is an alkyl group or an alkenyl group having 8 to 20 carbon atoms. EO indicates ethylene oxide, and PO indicates propylene oxide. p, q and r are average addition mole numbers, p is 1-13, q is 1-4, and r is 1-13. (B) a nonionic surfactant represented by the following general formula (II): R ² O (EO) _m (PO) _n H (II) wherein R ² is an alkyl group or alkenyl group having 8 to 20 carbon atoms It is. EO indicates ethylene oxide, and PO indicates propylene oxide. m and n are average number of moles added, and m is 2 to 1
4, n is 1-6. ] Is provided.

As the component (a), R ¹ in the general formula (I) is a linear primary alkyl group having an average of 10 to 14 carbon atoms, p is 3 to 9, q is 1 to 3, r Are preferably 1 to 5. formula
The nonionic surfactant (I) is an alkyl group of R ¹ synthesized by a well-known method or derived from a natural fat or oil,
It is synthesized by adding ethylene oxide to alkenyl group-containing alcohol in the order of ethylene oxide and propylene oxide, and then adding ethylene oxide again. In the present invention, the nonionic surfactant of the component (a) is preferably
10 to 50% by weight is contained.

The component (b) is represented by the general formula (II):
R ² is a linear primary alkyl group having an average carbon number of 10 to 14,
It is preferable that m is 3 to 9, and n is 1 to 3. As the nonionic surfactant of the formula (II), a commercially available nonionic surfactant may be used.Also, an alkyl group or an alkenyl group of R ² synthesized by a well-known method or derived from a natural fat or oil may be used. It can be produced by adding ethylene oxide to the alcohol and then adding propylene oxide by a known method. In the present invention, the nonionic surfactant of the component (b) is preferably contained in an amount of 0.5 to 20% by weight.

It is preferable that the ratio of the component (a) to the component (b) does not fall below 1/1 in weight ratio [(a) / (b)], especially in the range of 20/1 to 1/1. , A liquid detergent composition having excellent detergency can be obtained.

In the present invention, conventionally known surfactants can be used in addition to the components (a) and (b). In particular, fatty acid salts having an average carbon number of 10 to 18
By using in combination with the weight%, foam removal during rinsing is improved. Other surfactants are preferably used in combination with an anionic surfactant such as an alkylbenzene sulfonate and a polyoxyethylene alkyl sulfate in order to enhance the detergency. As the counter ion of the anionic surfactant, in addition to alkali metals such as sodium and potassium, alkaline earth metals such as magnesium and / or mono, di,
Although alkanolamines such as triethanolamine are used, alkanolamines are particularly preferable because liquid stability is improved. As the nonionic surfactant, it is preferable to use a polyoxyethylene alkyl ether, an amine oxide, an alkyl polysaccharide surfactant, a fatty acid alkanolamide and a polyhydroxyfatty acid amide in combination. In order to improve the feeling, it is preferable to use a cationic surfactant such as a mono-long-chain alkyltrimethyl quaternary ammonium salt in combination. However, when a cationic surfactant is used, attention should be paid to stability.

Further, in the present invention, components which are conventionally known to be added to detergents can be added as optional components. Such optional components include alkali agents such as alkali metal hydroxides, silicates, carbonates and alkanolamines; alcohols such as ethanol, ethylene glycol, and polyethylene glycol having a molecular weight of 200 to several thousands and a low molecular weight. And glycols such as propylene glycol, para-toluenesulfonic acid, benzoate (also effective as a preservative), and a thickener and a solubilizer such as urea; a phase adjuster and a polyoxy for improving the detergency. Alkylene benzyl ether, polyoxyalkylene phenyl ether; polyhydric carboxylate having a divalent metal ion-capturing ability as nitrilotriacetate, ethylenediaminetetraacetate, iminodiacetate, diethylenetriaminepentaacetate, glycoletherdiaminetetraacetate , Hydroxyethyl iminodiacetic acid salt and Aminopolyacetates such as triethylenetetramine hexaacetate, salts such as malonic acid, succinic acid, diglycolic acid, malic acid, tartaric acid, and citric acid; polyacrylic acid having re-staining prevention ability and dispersing ability;
Polymaleic acid, carboxymethylcellulose, polyethylene glycol having an average molecular weight of 5,000 or more, maleic anhydride-diisobutylene copolymer, maleic anhydride-methylvinyl ether copolymer, maleic anhydride-isobutylene copolymer, maleic anhydride-vinyl acetate copolymer Polymers such as polymers and salts of high molecular compounds such as naphthalene sulfonate formalin condensates; polymers described in JP-A-59-62614; color transfer inhibitors such as polyvinylpyrrolidone; amylase, protease, lipase, cellulase Enzymes such as calcium chloride, calcium sulfate, formic acid, boric acid (boron compound); fluorescent dyes such as Tinopearl CBS (manufactured by Ciba Geigy); silicones for imparting flexibility; antifoaming agents Silica, silicone; butyl Mud carboxymethyl toluene, distyrenated cresol, sodium sulfite, antioxidants such as sodium bisulfite; Other fluorescent dyes; bluing agents; perfumes; and antimicrobial preservative agents. The liquid detergent composition of the present invention is suitable as a detergent composition for clothing.

[0010]

As described above, the liquid detergent composition of the present invention is excellent in bubble elimination during rinsing, and can be rinsed with a small amount of water.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples.

Examples The detergency and rinsing properties of the liquid detergent compositions shown in Tables 1 and 2 were evaluated by the following methods.

(1) Detergency Test Method Preparation of Artificial Soil Cloth The artificial stain cloth used was obtained by uniformly applying 2 g of a model stain having the following composition to a 10 × 10 cm cotton cloth.

<Model Soil Composition> The following A, B, C, D,
The amount of B was adjusted so that the sum of E became 100%. In addition, each% is a ratio in the final dirt component. A: 0.44% lauric acid, 3.15% myristic acid, 2.35% pentadecanoic acid, 6.31% palmitic acid, heptadecanoic acid
0.44%, stearic acid 1.60%, oleic acid 7.91%, triolein 13.33%, n-hexadecyl palmitate 2.22
%, Squalene 6.66% mixture C: egg white lecithin liquid crystal 1.98% [arginine hydrochloride 11.37 g, histidine 4.20 g, serine 2.44 g in 80 ml of distilled water
Is dissolved and the pH is adjusted to 5.0 with concentrated hydrochloric acid, and this solution and egg white lecithin are thoroughly mixed with a mixer to obtain an egg white lecithin liquid crystal.・ D: Kanuma Red Soil 8.11% ・ E: Carbon Black 0.025% ・ B: Calculate 105mg of calcium chloride (dihydrate) in distilled water to make a total of 100% with hard water obtained as 1000ml balance.

Washing Conditions and Evaluation Method Five artificially stained cloths were placed in 1 liter of a diluted aqueous solution of the detergent composition for evaluation, and washed with a tergotometer at 100 r / min under the following conditions. <Cleaning conditions> Cleaning time: 10 minutes Detergent concentration: 0.07% Water hardness: 71.2 mg CaCO ₃ / liter (4 ° DH) Water temperature: 20 ° C. Rinse: 5 minutes with tap water The reflectance at 550 nm before and after washing is measured by a colorimeter (Nippon Denshoku Co., Ltd., Z-300A).
The cleaning rate (%) was determined by the following formula (the average value of the cleaning rates of five sheets is shown in the table).

[0016]

(Equation 1)

(2) Rinseability test method <Washing conditions> Washing machine; Toshiba Galaxy 3.6 VH-360S1 Water volume: 30 liters (tap water, 23 ° C) Detergent volume: 20 g Clothes: cotton underwear 1.5 kg, T / C shirt 0.5 kg Washing conditions: strong reversal 10 minutes, dehydration 1 minute Rinse conditions: running water rinsing (14 liters / minute, overflow) 6 minutes <Evaluation criteria> ○: No bubbles △: About 1/2 bubbles remain on liquid level × ; Bubbles remain on the entire liquid surface

[0018]

[Table 1]

[0019]

[Table 2]

(Note) Nonionic surfactant 1; In the formula (I), R ¹ = primary mixed alkyl group having 11 to 14 carbon atoms, p = 3, q = 1, r = 3
A nonionic surfactant 2; in the formula (I), R ¹ = a primary mixed alkyl group having 11 to 14 carbon atoms, p = 5, q = 1, r = 3
A nonionic surfactant 3; in the formula (I), R ¹ = a primary mixed alkyl group having 11 to 14 carbon atoms, p = 7, q = 1, r = 3
Nonionic surfactant 4; In the formula (I), R ¹ = primary mixed alkyl group having 11 to 14 carbon atoms, p = 9, q = 1, r = 3
A nonionic surfactant 5; in the formula (I), R ¹ = a primary mixed alkyl group having 11 to 14 carbon atoms, p = 5, q = 1, r = 2
A nonionic surfactant 6; in the formula (I), R ¹ = a primary mixed alkyl group having 11 to 14 carbon atoms, p = 7, q = 1, r = 2
A nonionic surfactant 7; in the formula (I), R ¹ = a primary mixed alkyl group having 11 to 14 carbon atoms, p = 3, q = 2, r = 3
A nonionic surfactant 8; in the formula (I), R ¹ = a primary mixed alkyl group having 11 to 14 carbon atoms, p = 5, q = 2, r = 3
A nonionic surfactant 9; in the formula (I), R ¹ = a primary mixed alkyl group having 11 to 14 carbon atoms, p = 7, q = 2, r = 3
A nonionic surfactant 10; in the formula (I), R ¹ = a primary mixed alkyl group having 11 to 14 carbon atoms, p = 9, q = 2, r = 3
A nonionic surfactant 11; in the formula (I), R ¹ = a primary mixed alkyl group having 11 to 14 carbon atoms, p = 5, q = 2, r = 2
A nonionic surfactant 12; in the formula (I), R ¹ = a primary mixed alkyl group having 11 to 14 carbon atoms, p = 7, q = 2, r = 2
A nonionic surfactant 13; in the formula (II), R ² = a primary mixed alkyl group having 11 to 14 carbon atoms, m = 3, n = 1; a nonionic surfactant 14; In (II), R ² = a primary mixed alkyl group having 11 to 14 carbon atoms, a compound in which m = 5 and n = 1. Nonionic surfactant 15; In the formula (II), R ² = 11 to 11 carbon atoms. A compound having 14 primary mixed alkyl groups, m = 7, n = 1; a nonionic surfactant 16; in the formula (II), R ² = a primary mixed alkyl group having 11 to 14 carbon atoms, m = 3, n Nonionic surfactant 17; In formula (II), R ^{2 is} a primary mixed alkyl group having 11 to 14 carbon atoms, m = 5, and n = 2. Nonionic surfactant 18 A compound in which, in the formula (II), R ^{2 is} a primary mixed alkyl group having 11 to 14 carbon atoms, m = 7 and n = 2; a nonionic surfactant 19; polyoxyethylene ( EOp =
8) Lauryl ether (EOp is the average number of moles of ethylene oxide added, hereinafter the same) ・ Nonionic surfactant 20; polyoxyethylene (EOp =
10) Lauryl ether • Nonionic surfactant 21; EO average 7 mol adduct of secondary alcohol having 12 to 14 carbon atoms • Anionic surfactant 1; alkyl group having 10 to 18 carbon atoms
・ Anionic surfactant 2; alkyl (C ₁₂ -C ₁₃ ) benzenesulfonic acid ・ Anionic surfactant 3; polyoxyethylene alkyl
(C ₁₂ ) ether sulfate (EOp = 3) ・ Cationic surfactant; monoalkyl (C ₁₆ -C ₁₈ ) trimethylammonium chloride ・ PEG; polyethylene glycol (Mw. 6000) ・ Enzyme: Durazyme 16.0 L (protease, Novo -Nordisk Bio-Industry Co., Ltd.)-Fluorescent dye; Tinopearl CBS (Ciba-Geigy)

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-10-324892 (JP, A) JP-A-10-279997 (JP, A) JP-A-5-214390 (JP, A) International publication 98/24864 (WO, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) C11D 1/722 C11D 17/08 CA (STN) CAOLD (STN) REGISTRY (STN)

Claims (1)

(57) [Claims] (A) a nonionic surfactant represented by the following general formula (I), and R ¹ O (EO) _p (PO) _q (EO) _r H (I) wherein R ¹ is carbon It is an alkyl group or an alkenyl group having the number of 8 to 20. EO indicates ethylene oxide, and PO indicates propylene oxide. p, q and r are average addition mole numbers, p is 1-13, q is 1-4, and r is 1-13. (B) a nonionic surfactant represented by the following general formula (II): R ² O (EO) _m (PO) _n H (II) wherein R ² is an alkyl group or alkenyl group having 8 to 20 carbon atoms It is. EO indicates ethylene oxide, and PO indicates propylene oxide. m and n are average number of moles added, and m is 2 to 1
4, n is 1-6. ], A liquid detergent composition comprising: