JPH0753999A - High-bulk-density granular detergent composition - Google Patents

Abstract

PURPOSE:To obtain the composition improved in the easiness of rinsing and adhesion to cloth. CONSTITUTION:The composition is one comprising 4-10wt.% 10-20C fatty acid salt component (A) containing at least 70wt.% 18C fatty acid salts and containing at least 50wt.% unsaturated fatty acid salts, 10-30wt.% anionic surfactant (B), and 2-10wt.% nonionic surfactant (C) and having a bulk density of 0.5g/cc or greater.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high bulk density granular detergent composition having excellent rinsability and cloth adhesion by incorporating a specific fatty acid salt.

[0002]

2. Description of the Related Art Conventionally used fatty acid salts with a high degree of saturation are components that are blended in detergents as foaming inhibitor and rinse improvers, but generally have a slow dissolution rate in cold water and a bulk density of 0. In a high bulk density granular detergent composition having a content of 0.5 g / cc or more, there is a problem that the detergent particles are not sufficiently dissolved during washing and tend to adhere to the object to be washed when the blending amount is large.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a high bulk density granular detergent composition which overcomes the above drawbacks of the prior art and has good rinsability and excellent cloth adhesion.

[0004]

The high bulk density granular detergent composition of the present invention is characterized by having the following composition. (A) contains 70% by weight or more of a fatty acid salt having 18 carbon atoms,
10 to 2 carbon atoms with an unsaturated fatty acid salt of 50% by weight or more
0 fatty acid salt; 4 to 10 wt% (B) anionic surfactant; 10 to 30 wt% (C) nonionic surfactant; 2 to 10 wt% and has a bulk density of 0.5 g / cc or more. High bulk density granular detergent composition characterized in that

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION As for the fatty acid salt used in the present invention, as a result of examining the fatty acid composition, particularly the carbon number and the balance of saturated / unsaturated, 70% by weight or more of the fatty acid salt has 1 carbon
It was found that the solubility of the high bulk density granular detergent was remarkably improved by increasing the degree of unsaturation to 50% by weight or more, and completed the present invention. However, it is not possible to obtain a fatty acid salt having the composition of the present application simply by saponifying a naturally occurring fatty acid, and for example, a new production method has succeeded in obtaining a fatty acid salt having a desired constitution. That is, vegetable oils and fats such as palm oil, palm kernel oil and coconut oil are used as raw materials, and methanol is allowed to act on these oils and fats to cause a transesterification reaction to produce a methyl ester salt. Next, a distillation step is carried out to fractionate, purify and separate as single fractions or fractions having respective carbon numbers. This makes it possible to obtain a fatty acid composition in which arbitrary carbon numbers are combined. The fatty acid composition obtained is saponified with an alkali metal salt, an ammonium salt or an amine salt to produce a fatty acid salt, and the sodium salt or potassium salt is preferable as the saponification agent. . From the viewpoint of color and odor, it is preferable that the content of linoleic acid in the unsaturated fatty acid is 10% by weight or less. Since the conventional soap composition has a problem of cloth adhesion, the fatty acid salt blended in the high-bulk density granular detergent has to be kept in a small amount, and as a result, the fatty acid salt cannot improve the rinsing property to a satisfactory level. It was difficult, but by adopting the fatty acid composition of the present invention, unlike the conventional fatty acid composition, it functions as a dissolution accelerator. It has become possible to improve significantly. The content of the specific fatty acid salt in the high bulk density granular detergent composition of the present invention is in the range of 4 to 10% by weight, preferably 5 to 8% by weight. If it is less than 4% by weight, the effect of improving rinsability is small and 1
When it exceeds 0% by weight, the fluidity of the detergent particles is deteriorated.

The content of the anionic surfactant used in the present invention is in the range of 10 to 30% by weight, preferably 10 to 25% by weight. Examples of the anionic surfactant used in the present invention include the following. 1) Linear or branched alkylbenzene sulfonate having an alkyl group having 8 to 16 carbon atoms 2) Alkyl sulfate or alkenyl sulfate having 10 to 20 carbon atoms 3) Olefin sulfonate having 10 to 20 carbon atoms 4) Alkane sulfonate having 10 to 20 carbon atoms 5) Alkane carboxylic acid salt having 10 to 20 carbon atoms 6) Having a linear or branched alkyl group or alkenyl group having 10 to 20 carbon atoms and having an average of 0.5 to 8 mol ethylene oxide or propylene oxide or butylene oxide or ethylene oxide / propylene oxide = 0.1 / 9.9 to 9.9 / 0.1
Alkyl ether sulphate or alkenyl ether sulphate added at a ratio of 7) having a straight or branched chain alkyl or alkenyl group having 10 to 20 carbon atoms and having an average of 0.5 to 8 mol of ethylene oxide or propylene oxide. Or butylene oxide or ethylene oxide / propylene oxide = 0.1 / 9.9 to 9.9 / 0.1
Alkyl ether carboxylate or alkenyl ether carboxylate added at the ratio of 8) Alkyl polyhydric alcohol ether sulfate such as alkyl glyceryl etherisulfonate having 10 to 20 carbon atoms 9) Saturation of 8 to 20 carbon atoms Or unsaturated α-sulfo fatty acid salt or methyl, ethyl or propyl ester 10) Amino acid type surfactant 11) N-acyl amino acid type surfactant such as acyl sarcosinate salt 12) Alkyl or alkenyl acid phosphate ester or phosphate ester The above-mentioned preferable anionic surfactants are 1),
3) and 9). As the salts of these anionic surfactants, sodium salts, potassium salts, ammonium salts, alkanolamine salts and the like are used, but it is preferable to use potassium salts in an amount of 50% by weight or more of the anionic surfactant. .

The content of the nonionic surfactant used in the present invention is in the range of 2 to 10% by weight, preferably 3 to 6% by weight. Examples of the nonionic surfactant used in the present invention include the following. 1) Polyoxyalkylene alkyl or alkenyl ether obtained by adding 7 to 18 mol of ethylene oxide (EO) and / or propylene oxide (PO) on average to a primary or secondary alcohol having 8 to 18 carbon atoms 2) 6 to 22 carbon atoms Ethylene oxide (E
O) and / or propylene oxide (PO) is added in an average of 7 to 18 moles to a polyoxyalkylene alkyl or alkenyl fatty acid or a lower alkyl ester thereof 3) having an alkyl group having an average of 6 to 12 carbon atoms and an average of 1 to 1 of ethylene oxide. ˜20 mol of added polyoxyethylene alkyl phenyl ether 4) Mono- or dialkanolamides to which ethylene oxide having 10 to 22 carbon atoms may be added 5) Alkyl polyglycoside having 8 to 20 carbon atoms 6) Average carbon number 10 to 10 Ester of 20 fatty acid and sucrose 7) Average C10-20 fatty acid glycerin monoester 8) Alkylamine oxide having an alkyl or alkenyl group having 10 to 20 carbons 9) For a condensate of propylene oxide and propylene glycol Ethylene Condensation product with oxidant (Pluronic type surfactant) 10) Condensation product with reaction product of propylene oxide and ethylenediamine with ethylene oxide (Tetronic type surfactant) These alkyl or alkenyl groups are linear or branched. Either of them may be used. The above-mentioned preferable nonionic surfactants include 1), 2) and 3).

The high bulk density granular detergent of the present invention has a particle size of 1,50.
It is preferably 0 μm or less, more preferably 1,500 μm
125 μm is 5% or less, more preferably 1%
The following is preferable. When the number of fine particles is large, the solubility becomes poor.

The high bulk density granular detergent composition of the present invention may further contain the following components. 1) Surfactants such as betaine-type and sulfone-type amphoteric surfactants and cationic surfactants. 2) sodium carbonate, potassium carbonate, sodium sulfate,
Inorganic builders such as sodium tripolyphosphate, sodium pyrophosphate, sodium orthophosphate, sodium silicate, and aluminosilicates represented by A-type zeolite, salts of phosphonic acid such as ethane-1,1-diphosphonate, and 2-phosphonobutane. Phosphonocarboxylic acid salts such as -1,2-dicarboxylic acid, amino acid salts such as aspartic acid and glutamate or derivatives thereof, aminopolyacetates such as nitrilotriacetate and ethylenediaminetetraacetate, polyacrylic acid, polyaconic acid An organic divalent metal ion scavenger such as a polyelectrolyte such as a polyacetal carboxylic acid polymer or a salt of an organic acid such as oxalic acid or citric acid is mixed.
These inorganic builders and organic divalent metal ion scavengers are incorporated in the detergent in an amount of 20 to 75% by weight. 3) polyethylene glycol, polyvinyl alcohol,
Polyvinylpyrrolidone, carboxymethylcellulose,
Anti-redeposition agent such as polyacrylate. 4) Bleaching agents such as sodium percarbonate, sodium perborate, sodium sulfate / sodium chloride hydrogen peroxide adducts,
Bleach activator such as TAED, tetraacetyl glucose, alkanoylbenzene sulfonate, alkanoyl benzoate. 5) Enzymes such as protease, amylase, cellulase and lipase. 6) Other fluorescent agents, fragrances, bluing agents, anti-caking agents, antioxidants and the like can be added as required.

The method for producing the high bulk density granular detergent composition of the present invention is not particularly limited.
No. 1511, JP-A No. 61-76597, a method by stirring granulation, and necessary after neutralizing by adding an alkaline agent and an acid-resistant detergent component to an unneutralized anionic surfactant. And a method of producing a high bulk density granular detergent by spray drying.

[0011]

The present invention contains (A) 70% by weight or more of a fatty acid salt having 18 carbon atoms and 50% by weight of an unsaturated fatty acid salt.
Rinsing by containing the above fatty acid salt having 10 to 20 carbon atoms; 4 to 10% by weight (B) anionic surfactant; 10 to 30% by weight (C) nonionic surfactant; 2 to 10% by weight To high bulk density granular detergent compositions having improved properties and fabric adhesion.

[0012]

The present invention will be described below with reference to examples.
The present invention is not limited to the examples below. The evaluation method used in the preliminary examples will be described below. (1) Rinseability A 10% by weight benzene solution containing the following dirt component was uniformly applied to a cotton skin shirt so as to be 0.1% by weight with respect to the fiber, air-dried and evaluated under the following conditions. Soil component Soil composition (% by weight) Oleic acid 40.6 Triolein 22.4 Cholesterol oleate 17.5 Liquid paraffin 3.6 Squalene 3.6 Cholesterol 2.3 Gelatin 10.0 Evaluation method Washing machine (swirl type, Inversion type), 25 g of detergent composition (0.083 wt% tap water solution) in 30 L of tap water
To prepare a detergent solution. The above-mentioned soiled cotton shirt was used as the cloth to be washed therein, and the cloth was washed for 10 minutes at a bath ratio of 1:30 at 25 ° C according to a usual operation. After the washing was completed, the cloth to be washed was dehydrated for 1 minute, rinsed twice with tap water for 3 minutes each time, and evaluated by the following criteria. A: Almost no bubbles are observed. B: Bubbles of 1 mm or less occupy about 50% of the liquid surface. C: Bubbles of 1 mm or more are present on the entire liquid surface. (2) Evaluation method of cloth adhesion property, using a granular detergent and tap water at 5 ° C., with a detergent concentration of 0.16% by weight and a bath ratio of 1:20, black nylon slip 60 g × 2 sheets, black acrylic sweater 130 g × 2 Sheets of blue knitted shirt 160g x 7 sheets were washed in a jet-type household electric washing machine for 5 minutes, rinsed with tap water at 5 ° C for 3 minutes to dehydrate, and the state of particles adhering to the item to be washed was determined. It was judged according to the following visual criteria.
⊚ and ○ are passing levels. ⊚: There are no adhered particles. ○: The adhered particles are not noticeable. Δ: The adhered particles are slightly conspicuous. X: Adhering particles are noticeable.

(3) Method for Producing Detergent A detergent slurry having a solid content of 60% was prepared by using each component except the nonionic surfactant and the enzyme. This slurry was dried using a countercurrent spray dryer at a hot air temperature of 200 to 280 ° C. so that the water content was 5% to obtain a spray dried product. Then, a spray-dried product and a nonionic surfactant are added with water if necessary, and stirred with a high-speed granulator (FS-GS55 type: manufactured by Fukae Kogyo Co., Ltd.) and then added with an enzyme to give a high bulk density granule. A detergent composition was produced. The obtained high bulk density granular detergent composition has an average particle size of 500 μm and a bulk density of 0.75 to 0.9.
It was 0 g / cm ³ . Details of the components used in Table 1 are shown below.

AOS-K: C12 to C18 alpha-olefin sulfonic acid potassium salt α-SF: C12: C14: 16: C18 = 1:
3: 5: 1 alpha sulfo fatty acid methyl ester-sodium LAS-K: C10-14 linear alkylbenzene sulfonic acid potassium salt AE1: C12 primary alcohol ethoxylate (EO = 20 mol addition) AE2: C12 fatty acid methyl ester Polyoxyethylene adduct of ester (EO = 15 mol addition) PEG: average molecular weight 600 zeolite: A-type zeolite, average particle size 0.6 to 1.
5 μm Carbonic acid-K: Potassium carbonate Enzyme: Alkaline protease: Alkaline lipase = 1: 1 preparation Fluorescent agent: Chinopearl CBS (manufactured by Ciba Geigy):
Whitex SKC (Sumitomo Chemical) = 1: 1 Carbonic acid-Na: Sodium carbonate

[Table 1]

[0015]

Claims (1)

[Claims] 1. A fatty acid salt containing 10 to 20% by weight of (A) fatty acid salt having 18 carbon atoms and containing 50% by weight or more of unsaturated fatty acid salt; 4 to 10% by weight (B) Anionic surfactant; 10 to 30% by weight (C) Nonionic surfactant; 2 to 10% by weight, and having a bulk density of 0.5 g / cc or more, a high bulk density granular detergent composition