JPH04348199A - Nonionic powdery detergent composition - Google Patents

Abstract

PURPOSE:To provide the title composition excellent in solubility in its use, also causing no dust production when used, comprising each specific nonionic surfactant, aluminosilicate and polyethylene glycol and CMC, etc., at specified proportion. CONSTITUTION:The objective composition comprising (A) 12-35 (pref. 15-30)wt.% of a nonionic surfactant <=40 deg.C in melting point and 9.0-16.0 in HLB, (B) 20-60 (pref. 30-50)wt.% of an aluminosilicate, (C) 0.05-4 (pref. 0.1-3)wt.% of polyethylene glycol 200-2000 (pref. 200-1000) in average molecular weight, and (D) 0.02-4 (pref. 0.04-0.5)wt.% of at least one kind of substance selected from CMC (salt), methyl cellulose, (carboxymethyl)hydroxyethyl cellulose, hydroxypropyl(methyl) cellulose and hydroxybutyl cellulose.

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 excellent solubility during use and does not leave dust during use.

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. discloses flowable detergents containing 30-100% (up to 4% of highly dispersed silicic acid may be used) and 0-70% of spray-dried detergent. 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. The above technology mainly focuses on research on detergent additives containing nonionic surfactants that are post-blended into spray-dried detergents that have anionic surfactants as the main cleaning base. Sufficient studies have not been conducted on cleaning agents that can be used for cleaning.

[0005] Powdered detergents also have the problem that fine particles may clutter during use or measurement, causing inconvenience to the user, or that particularly high-density detergents have poor solubility when placed in a washing machine. be.

[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 and a specific cellulose derivative are used in combination, The present invention has been completed based on the discovery that the problem of fine powder scattering during measurement and the problem of poor solubility when being put into a washing machine 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). [Ingredients] (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) Polyethylene glycol with an average molecular weight of 200-2000
0.05 to 4% by weight (d) One or more selected from carboxymethylcellulose or its salts, methylcellulose, hydroxyethylcellulose, carboxymethylhydroxyethylcellulose, hydroxypropylcellulose, hydroxybutylcellulose, and hydroxypropylmethylcellulose
0.02-4% by weight.

[0008] The nonionic surfactant as component (a) used in the present invention has a melting point of 40°C or less and an HLB of
Those in the range of 9.0 to 16.0 are suitable because they are excellent in stain removal, foaming, and foam removal. HLB here is J. T. Davies and E. K. Rideal,
Interfacial Phenomena, Aca
demic Press, New York 196
3, p. 371-383.

Specific examples of the 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. ] As detergency builders, those represented by the following general formula are particularly preferred. Na2O・Al2O3・n(SiO2)・w(H2O)
[In the formula, n represents a number of 1.8 to 3.0, and w represents a number of 1 to 6. ]■ Amorphous aluminosilicate x(MeO)・y(M2O)・Al2O3・z(Si
O2)・w(H2O) [In the formula, Me represents an alkaline earth metal such as calcium or magnesium atom;
represents an alkali metal such as a sodium atom and/or a potassium atom. x, y, z, and w are arbitrary positive numbers (x includes 0). ] Crystalline and amorphous aluminosilicates can be used alone or in combination. Component (b) is incorporated in the total composition in an amount of 20 to 60% by weight, preferably 30 to 50% by weight.

The 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 an average molecular weight of 200 to 2000, particularly 200
~1000 is preferred. If the average molecular weight is less than 200, dusting tends to occur;
Those having a molecular weight exceeding 20% can be used in combination with component (c), but the effects of the present invention cannot be obtained sufficiently when used alone. Component (c) can exhibit the effect of the present invention in a smaller amount than expected, and component (c) is contained in the composition of the present invention in an amount of 0.05 to 4% by weight, preferably 0.1 to 3% by weight. %, and a sufficient effect can be obtained even if the amount is 0.5% by weight or less.

[0012] As the cellulose derivative which is the component (d) of the present invention, one or more of the following may be used. That is, carboxymethylcellulose or its salt, methylcellulose,
They are hydroxyethylcellulose, carboxymethylhydroxyethylcellulose, hydroxypropylcellulose, hydroxybutylcellulose and hydroxypropylmethylcellulose. For example, particularly in the case of carboxymethyl cellulose or a salt thereof, those having a molecular weight of 30,000 to 150,000 and a degree of etherification of 0.5 to 0.85 are preferable. These (d) components are present in the composition of the present invention in an amount of 0.02
-4% by weight, preferably 0.04-0.5% 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 cleaning 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, enzymes such as protease, lipase and cellulase, anti-caking agents such as paratoluenesulfonate, sulfosuccinate, talc and calcium silicate, It may contain antioxidants such as tertiary-butylhydroxytoluene and distyrenated cresol, fluorescent dyes, blue tinting agents, fragrances, etc., but these are not particularly limited and may be blended according to the purpose.

[0016]

[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, and fluorescent dye) in the amounts shown in Table 1 were placed in a stirring rotary granulator (Ledige mixer). Gradually introduce the indicated amount of liquid nonionic surfactant and then
Amounts of polymer (polyethylene glycol and cellulose derivatives) melt were added and further enzymes, fragrances and a small amount of zeolite A were added and mixed to obtain a final detergent product having the composition shown in Table 1. Using this detergent product, tests were conducted on powder physical properties, solubility, and dusting during handling. Table 1 shows the results.

■ Apparent specific gravity test method... JIS K 33
62 Synthetic detergent test method■Flowability test method...Using the stand and funnel described in JIS K 3362 Synthetic detergent test method, ASTM: B2
Flow Rate o described in 13-48
f Metal Powders' Flow Rate
Measured according to. ■Detergent dispersion solubility test Co., Ltd. Hitachi fully automatic washing machine 2.8kg "Aozora PF-
2650", place 60 g of detergent at one end of the lower part of the washing tub, add 3 kg of clothing (60 parts by weight of cotton underwear and 40 parts by weight of a polyester/cotton blend dress shirt) on top of it, and pour tap water at 10°C. Water was poured slowly at a flow rate of 8 liters per minute over 5 minutes until the volume reached 40 liters, avoiding direct contact with the detergent. After that, start stirring, and after stirring for 3 minutes, stop stirring,
After draining and dehydrating for 3 minutes, visually determine the amount of detergent remaining on the clothes and washing tub. The judgment criteria are shown below. ◎: No residual detergent ○: Slightly small granular residual detergent △: Many small granular residual detergent or slightly lumpy residual detergent ×: Significant clump-like residual detergent remains ■ Detergent dusting property test JIS K Using the stand and funnel described in 3362 Synthetic Detergent Test Method, pour a scoop of the sample detergent into the funnel, let it fall, and then visually judge the dustability of the powder. The judgment criteria are shown below. ◎: No dusting ○: Slight dusting △: There is dusting ×: Considerable dusting

[0019]

[Table 1]

Example 2 A cleaning agent having the following composition was prepared in the same manner as in Example 1, and tested in the same manner as in Example 1 regarding the powder physical properties of the product, solubility, and dusting during handling. Table 2 shows the results.

[0021]

[Table 2]

Claims (1)

[Claims] Claim 1: The following components (a), (b), (c) and (
d) A nonionic powder cleaning composition comprising: [Ingredients] (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) Polyethylene glycol with an average molecular weight of 200-2000
0.05 to 4% by weight (d) One or more selected from carboxymethylcellulose or its salts, methylcellulose, hydroxyethylcellulose, carboxymethylhydroxyethylcellulose, hydroxypropylcellulose, hydroxybutylcellulose, and hydroxypropylmethylcellulose
0.02-4% by weight