JPH04301000A - Nonionic powdery detergent composition - Google Patents

Abstract

PURPOSE:To provide a detergent composition excellent in defoaming with hardly any clouding in rinsing water in a powdery detergent composition containing a nonionic surfactant as a main detergent base. CONSTITUTION:A nonionic powdery detergent composition containing 12-35wt.% nonionic surfactant having the melting point and HLB within specific ranges, 20-60wt.% aluminosilicate, 0.05-4wt.% polyethylene glycol having 200-2000 molecular weight and 0.02-5wt.% rinsing agent.

Description

[Detailed description of the invention]

0001

FIELD OF THE INVENTION This invention relates to cleaning compositions. More specifically, the present invention relates to a powder detergent composition containing a nonionic surfactant as a main base, and particularly to a powder detergent composition that has good foam removal during rinsing and quickly eliminates turbidity in the rinse water.

0002

[Prior Art and Problems to be Solved by the Invention] Nonionic surfactants have good hard water resistance, detergency,
It has characteristics such as outstanding dirt dispersion ability and very good biodegradability, and is considered important as a cleaning surfactant.

[0003] However, most nonionic surfactants used for cleaning are liquid at room temperature;
Powdered detergents are manufactured by blending a large amount of nonionic surfactants in liquid state, and over time, the nonionic surfactants gradually ooze out and seep into the inner surface of paper containers, or the powdered detergent's There are problems in that fluidity is significantly impaired, and furthermore, caking occurs, causing the detergent to solidify, thereby impairing its commercial value.

[0004] Various studies have been made regarding this problem. For example, JP-A-50-119813 discloses a premix in which a nonionic surfactant is finely distributed on a zeolite or a mixture of a zeolite and an inorganic peroxide that produces hydrogen peroxide in water. Fluid detergents containing 30-100% (up to 4% of highly dispersed silicic acid may be used) and 0-70% of spray-dried detergent are disclosed. JP-A-61-89300 discloses that after mixing water-insoluble granules and silica powder, a nonionic surfactant is sprayed, and then zeolite powder is added to prepare a granulated product. It is disclosed that a nonionic surfactant-containing granular detergent blended with an anionic surfactant-containing granular detergent has good fluidity and can prevent caking. With this technique, most of the above-mentioned problems have been solved.

[0005] However, nonionic surfactants have a problem in that they do not easily remove bubbles and the turbidity in the rinse water does not disappear easily.

[0006]

[Means for Solving the Problems] As a result of extensive research into cleaning agents that use nonionic surfactants as the main cleaning base, the present inventors found that when polyethylene glycol of a specific molecular weight is used in combination with a rinsing agent, the above-mentioned The present invention was completed based on the discovery that the problem of foam breakage and the problem of turbidity in rinsing water can be significantly improved.

That is, the present invention comprises the following components (a), (b),
The present invention provides a nonionic powder detergent composition containing (c) and (d). (a) Melting point is 40°C or less and HLB is 9.0~
Nonionic surfactants in the range of 16.0


12-35% by weight (b) aluminosilicate

20-60% by weight (c) Molecular weight is
200-2000 polyethylene glycol
0.05-4% by weight (d) Rinse agent

0.02-10% by weight. The nonionic surfactant as component (a) used in the present invention has a melting point of 40°C or less and an HLB of 9.0 to 9.0.
A value in the range of 16.0 is suitable because it is excellent in stain removal, foaming, and foam removal. The HLB used here is J. T
．． Davies and E. K. Rideal, Int.
erfacial Phenomena, Acade
mic Press, New York 1963,
p. 371-383.

Specific examples of component (a) include polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyethylene glycol fatty acid ester, and polyoxyethylene castor oil. , polyoxyethylene alkylamine, glycerin fatty acid ester, higher fatty acid alkanolamide, alkyl glycoside, alkyl amine oxide, and the like. Among these, polyoxyethylene alkyl ethers, especially linear or branched, primary or secondary alcohols having 10 to 20 carbon atoms, preferably 10 to 15 carbon atoms, more preferably 12 to 14 carbon atoms, are used as the main nonionic surfactant. The average number of moles of ethylene oxide added is 5 to 15.
, preferably 6 to 12, more preferably 6 to 10 polyoxyethylene alkyl ethers. (a) component is 12 to 35% by weight in the total composition;
Preferably, it is blended in an amount of 15 to 30% by weight.

The aluminosilicate which is component (b) of the present invention is a crystalline or non-crystalline aluminosilicate as shown by the following formula. ■ Crystalline aluminosilicate (zeolite) represented by the following formula x(M'2O or M''O)・Al2O3・y(SiO
2)・w(H2O) [In the formula, M' is an alkali metal atom,
M'' is an alkaline earth metal atom exchangeable with calcium, x, y, w represent the number of moles of each component, generally 0.7≧x≧1.5, 0.8≦y≦6 ,
w is any positive number. ]■ Amorphous aluminosilicate x(M2O)・Al2O3・y(SiO2)・w(H2
O) [In the formula, M represents a sodium atom and/or a potassium atom, and x, y, and w satisfy 0.7<x≦1.
2, represents the number of moles of each component within the range of 1.6≦y≦2.8. w is an arbitrary positive number. ] Component (b) is incorporated in the total composition in an amount of 20 to 60% by weight, preferably 30 to 50% by weight.

Component (c) of the present invention has a molecular weight of 2
00 to 2000 polyethylene glycol can be produced by blowing and polymerizing ethylene oxide into ordinary ethylene glycol in the presence of a catalyst under pressure and heat. The component (c) used in the present invention has a molecular weight of 200 to 2000, particularly 200 to 1
000 is preferred. Those having a molecular weight exceeding this range can be used in combination with component (c), but the effects of the present invention cannot be obtained sufficiently when used alone. Also, (c)
The effect of the present invention can be exerted in a smaller amount than expected, and (c) component is present in the composition of the present invention at 0.0
It is blended in an amount of 5 to 4% by weight, preferably 0.05 to 1% by weight.

As the rinsing agent which is component (d) of the present invention, it is preferable to use one or more of the following 1) to 3).

1) Silicone As the silicone, dimethyl silicone oil, silicone paste, silicone emulsion, organically modified polysiloxane, fluorosilicone oil, etc. can be used, but those in which these are absorbed into silica powder are particularly preferred.

2) Fatty acid salt having 8 to 20 carbon atoms The fatty acid salt may be either a saturated fatty acid or an unsaturated fatty acid salt. As such fatty acids, coconut acid whose main component is lauric acid, beef tallow fatty acid whose main component is oleic acid, palm fatty acid, etc. can be used. The blending amount of such fatty acid salt is 0.
．． If it is less than 0.02% by weight, no effect on rinsability is observed, and if it exceeds 5% by weight, the effect contributing to rinsability remains unchanged, which is not preferable.

3) Polyoxyethylene polyoxypropylene alkyl ether having an alkyl group having 8 to 20 carbon atoms, the number of moles of ethylene oxide added is 3 to 14, and the number of moles of propylene oxide added is 1 to 14. The compound is a block type polyoxyethylene polyoxypropylene alkyl ether represented by the following general formula (1).

[0015]

[Chemical formula 1]

(Here, R is a straight or branched alkyl group having 8 to 20 carbon atoms, m and n are the number of moles added,
m represents 3-14, and n represents 1-14. ) If the amount of polyoxyethylene polyoxypropylene alkyl ether is less than 0.02% by weight, no effect on rinsability is observed, and if it exceeds 5% by weight, the effect contributing to rinsability remains unchanged, but on the contrary, it reduces turbidity. This is not preferable because it may occur.

These components (d) are incorporated in the composition of the present invention in an amount of 0.02 to 10% by weight, preferably 0.1 to 2.0% by weight.

The composition of the present invention includes the above (a) to (d).
In addition to the essential components, the following various surfactants can be used in combination. Examples of anionic surfactants include alkylbenzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, α-olefin sulfonates, α-sulfo fatty acid salts or ester salts,
Examples include alkyl or alkenyl ether carboxylates, amino acid type surfactants, N-acylamino acid type surfactants, alkyl or alkenyl phosphate esters or salts thereof.

Examples of amphoteric surfactants include carboxy-type or sulfobetaine-type amphoteric surfactants, and examples of cationic surfactants include quaternary ammonium salts.

In addition, the nonionic powder detergent composition of the present invention may contain conventional auxiliary additives such as tripolyphosphate,
Phosphates such as pyrophosphate, aminotri(methylenephosphonic acid), 1-hydroxyethylidene-1,1-diphosphonic acid, ethylenediaminetetra(methylenephosphonic acid)
, diethylenetriaminepenta(methylenephosphonic acid)
, and salts thereof, salts of phosphonocarboxylic acids such as 2-phosphonobutane-1,2-dicarboxylic acid, salts of amino acids such as aspartic acid and glutamic acid, aminopolyacetates such as nitrilotriacetate and ethylenediaminetetraacetate, Polymer electrolytes such as polyacrylates and polyaconitates, non-dissociated polymers such as polyvinyl alcohol, JP-A-1987
Polyacetal carboxylic acid polymers described in JP-A No. 60-227895, builders such as layered silicates, diglycolic acid, and oxycarboxylic acid salts, divalent metal ion scavengers, silicates, and carbonates described in JP-A-60-227895 Alkaline agents or inorganic electrolytes such as salts and sulfates, anti-recontamination agents such as polyvinylpyrrolidone and carboxymethyl cellulose, anti-caking agents such as paratoluene sulfonate, sulfosuccinate, talc and calcium silicate, tertiary butyl hydroxytoluene, It may contain an antioxidant such as a distyrenated cresol, a bluing agent, a flavoring agent, etc., but these are not particularly limited and may be blended according to the purpose.

[0021]

[Examples] The present invention will be further explained in the following examples, but the present invention is not limited to these examples.

Example 1 Powder raw materials (beef tallow fatty acid soda, zeolite A, amorphous silica, soda carbonate, sodium polyacrylate, fluorescent dye, etc.) in the amounts shown in Table 1 were stirred in a rotary granulator (Ledige mixer). , and gradually introduced liquid nonionic surfactant in the amount shown in Table 1, then added polyethylene glycol and rinsing agent in the amounts shown in Table 1, and further added enzyme, fragrance, and a small amount of zeolite A, and mixed. A final detergent product having the composition shown in Table 1 was obtained. Using this detergent product, antifoaming properties and rinsing properties were tested by the following methods. Table 1 shows the results. ■ Defoaming and rinsing test method Pour 30 liters of tap water at 20℃ into a pulsator type electric washing machine (manufactured by Toshiba), add 25 g of sample, stir and dissolve, then add cotton underwear and a polyester/cotton blend dress shirt. A total of 1 kg of stained cloth and 2 g of a model oil-based stain having the composition shown below are placed in the above washing solution and agitated with strong inversion for 10 minutes. After stopping the agitation, drain the water, dehydrate the clothes for 1 minute, rinse the pulsator with tap water, and then rinse it again with tap water for 30 minutes.
liter, clothes were added, and batch rinsing was performed on a strong inversion for 3 minutes. Defoamability was determined by the amount of foam after stirring was stopped, and rinsing performance was determined by the turbidity of the rinse water.

*Model oily stain composition Cottonseed oil 60
wt% cholesterol 10wt% oleic acid 10
Weight% palmitic acid 10
Weight% Liquid and solid paraffin 10% by weight *Defoaming evaluation criteria A: Almost no foam is seen on the liquid surface after washing B: Foam is present on about 1/4 of the liquid surface after washing C: Washing Bubbles are present on about 1/2 of the liquid surface after cleaning * Rinseability evaluation criteria A: Washing liquid is transparent B: Washing liquid is almost transparent C: Washing liquid is cloudy

[0024]

[Table 1]

[0025]

[Table 2]

[0026]

[Table 3]

Claims (2)

[Claims] Claim 1: The following components (a), (b), (c) and (
d) A nonionic powder cleaning composition comprising: (a) Melting point is 40°C or less and HLB is 9.0~
Nonionic surfactants in the range of 16.0


12-35% by weight (b) aluminosilicate

20-60% by weight (c) Molecular weight is
200-2000 polyethylene glycol
0.05-4% by weight (d) Rinse agent

0.02-10% by weight [Claim 2] (d) The rinsing agent as the component is the following 1)
The nonionic powder detergent composition according to claim 1, which is one or more selected from 3) to 3). 1) Silicone 2) Fatty acid salt having 8 to 20 carbon atoms 3) Having an alkyl group having 8 to 20 carbon atoms, the number of moles of ethylene oxide added is 3 to 14, and the number of moles of propylene oxide added is 1 to 14. A polyoxyethylene polyoxypropylene alkyl ether