JP2926420B2 - Nonionic laundry detergent composition - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a granular laundry detergent composition comprising a mixture of a nonionic surfactant and a cationic surfactant.

2. Description of the Related Art Cationic surfactants have been conventionally used in detergent compositions, but generally, apart from detergency, to protect the fibers, for example, the surface of the laundry is sterilized and the fibers are softened. To remove static electricity.

The use of cationic surfactants in detergents is not without their drawbacks. Cationic surfactants precipitate in combination with anionic surfactants and optical brighteners, and confer functional properties of cationic and anionic substances. The properties of anionic fluorescent brighteners and brighteners are easily inhibited in the presence of a cationic surfactant. Cationic substances are also detrimental to soil suspension. Many cationic substances will attract dirt and clean the cloth, thereby reducing the detergency of the detergent composition.

To address the incompatibility between cations and anions, the adaptation measures taken by detergent artisans are that the surfactant system is nearly neutral for cationic and anionic substances, preferably the surfactant anion is positive. It is to provide a detergent composition with more than ions. Otherwise, the cationic material was used in a separate wash cycle to avoid contact between the anionic material and the cationic surfactant. Compositions comprising mixtures of anionic, cationic and nonionic surfactants are known in the prior art. Laundry detergents consisting of a mixture of only a nonionic surfactant and a cationic surfactant are not generally practically used. This is because it is extremely difficult to formulate an appropriately balanced system. High levels of nonionic surfactants and excess cationic surfactants with respect to anionic brighteners have a reduced tendency to whiten and have a strong tendency to redeposit soil on fibers. Thus, the addition of an anionic surfactant to the combination of a nonionic surfactant / cationic surfactant suppresses the reattachment of dirt and prevents the adverse effects of cationic compounds on brighteners. It has been considered necessary. However, this method impairs the detergency of the cationic surfactant and consequently reduces both detergency and whitening. Therefore, the use of a mixture of a nonionic surfactant and a cationic surfactant as a detergent is limited to the use of a special detergent such as a degreasing agent or a pavement detergent. No optical brighteners are used, and (2) washing is not performed in closed containers, such as in washing machines, in which dirt is suspended and redeposits on the wash.

[Problems to be Solved by the Invention] The present invention provides a granular laundry detergent comprising a nonionic surfactant, an anionic fluorescent brightener, a builder and a cationic surfactant containing a quaternary ammonium compound. Wherein, of the quaternary ammonium compounds, three of the alkyl substituents are lower alkyl groups or modified lower alkyl groups, and the fourth substituent is an electronegative group of a long chain bonded to a nitrogen atom. It is an alkyl group or a modified alkyl group, which reduces the adverse effect of the cation on the fluorescent whitening agent and stain reattachment.

[Means for Solving the Problems] The main components of the granular laundry detergent of the present invention include the above-mentioned at least one nonionic surfactant, at least one anionic fluorescent agent, at least one builder, and At least one etheramine based cationic surfactant is included. These main components are contained in the detergent composition in the following range. That is, Cationic Surfactants The cationic surfactants based on quaternary etheramines used in the present invention are of the general formula R1-EzR2R3R4N + X wherein R1 is an alkyl group having 8 to 24 carbon atoms, preferably 8 to 20 carbon atoms. , Most preferably having from 12 carbon atoms
R2, R3 and R4 are the same or different groups, each of which is independently an alkyl group having 2 to 4 carbon atoms or a compound of the formula H (OR
5) a hydroxyalkyl group having x wherein R5 is an alkylene group having 1 to 4 carbon atoms and x is an integer of 1 to 4; E is a divalent electronegative group;
And z is an integer of 1 to 4. Provided that at least one of R2, R3 and R4 has 1 to 4 carbon atoms
And more preferably a methyl group].

The electronegative group (E) z is a divalent group directly connected to a nitrogen atom by a carbon-nitrogen bond. The group E is a general formula:-(A (CH2) y) z wherein A is And is preferably -O-. And y is an integer in the range of 1 to 8, preferably 3. And z is as defined above. Preferably, the electronegative group E has the general formula: O- (CH2R6) m, wherein R6 is a hydrogen atom or, preferably, an alkylene group having 1 to 4 carbon atoms, most preferably 2 carbon atoms. Is an alkylene group. M is 1 to 5
And preferably 1].

R1 is a long-chain alkyl group having 8 to 20 carbon atoms directly connected to the electronegative group by a carbon bond. R1 may be unbranched, but is preferably a highly branched alkyl chain having 4 or less carbon atoms in the longest unbranched chain, and usually isotridecyl is a preferred long-chain alkyl group.

R2, R3 and R4 are the same or different groups, each of which is independently an alkyl group having 1 to 4 carbon atoms, preferably a methyl group and / or H
(OCnH2n) m wherein n is 1 to 4, preferably 2, and m is 1 to 10, preferably 1. Where R2, R
At least one of 3 and R4 is an alkyl group having 1 to 4 carbon atoms, preferably a methyl group.
It is.

Nonionic Surfactants Any nonionic surfactant commonly used in commonly used detergent formulations can be utilized in the present invention. Representative examples of such nonionic surfactants include the following. That is: 1. Polyethylene oxide condensate of alkylphenols. These compounds include alkylphenols having 1 to 15, preferably 6 to 12 carbon atoms in the straight or branched chain and 4 to 4 moles per mole of alkylphenol.
Condensation products with 25 mol, preferably 4 to 16 mol, of ethylene oxide are included. The alkyl substituents of such compounds can be derived, for example, from polymerized polypropylene, diisobutylene, and the like. Examples of compounds of this type include nonylphenol condensed with about 9.5 moles of ethylene oxide per mole of nonylphenol; dodecylphenol condensed with about 12 moles of ethylene oxide per mole of phenol; Dinonylphenol condensed with moles of ethylene oxide. Commercially available nonionic surfactants of this type include Igepal R C0-630 and Rohm and Has (R)
There are Triton X-45, X-114, X-100, and X-102 marketed by Ohm and Hass Company.

2. Condensation products of aliphatic alcohols with 1 to 25 mol, preferably 5 to 16 mol, of ethylene oxide. The alkyl chain of the aliphatic alcohol may be straight or branched, primary or secondary, and usually has about 8 to 22 carbon atoms. Examples of such ethoxylated alcohols are the condensation products of myristyl alcohol condensed with about 10 moles of acetylene oxide per mole of alcohol; about 9 moles of ethylene oxide and coconut alcohol (10 to 10 carbon atoms). 14) (a mixture of aliphatic alcohols having alkyl groups of different lengths). Commercially available nonionic surfactants of this type include Union Carbide.
de Corporation (Te Corporation)
rgitol) 15-S-9; Shell Chem
ical Company) marketed Neodoll (Neodo)
l), 25-7, and Procto & Gamble (Procto)
r & Gamble & Company) has KYROEOB marketed. Ethoxylated alcohols are currently preferred as nonionic surfactants.

3. Condensation products of ethylene oxide with a hydrophobic base obtained by condensing polypropylene oxide and polypropylene glycol. The molecular weight of the hydrophobic portion of these compounds is about 1,
It is 500 to 1,800 and inhibits solubility in water.
The addition of polyoxyethylene to this hydrophobic moiety tends to increase the solubility of water as a whole molecule, and the liquid character of the product is that the polyoxyethylene content is About 50 of total weight
% Is reached, which corresponds to a maximum of about 40 moles of eylene oxide condensing. Examples of this class of compounds include Wyandot Chemical, Inc.
Among some of the PLURONIC surfactants marketed by dot Chemical Corporation.

4. Condensation products of ethylene oxide and the product obtained by the reaction of propylene oxide and ethylenediamine. The hydrophobic portion of these products consists of the reaction product of ethylene dimine and excess propylene oxide, and has a molecular weight of about 2.500 to 3,000. The hydrophobic moiety is condensed with ethylene oxide, resulting in a condensation product of about 40
It contains from about 80% to about 80% by weight of polyoxide ethylene and is reacted to a molecular weight of about 5,000 to about 11,000. Examples of this type of nonionic surfactant include Wyandot Chemical C
Orporation) and some of the commercially available TECTROONIC compounds.

5, one alkyl moiety having 10 to 18 carbon atoms,
A water-soluble amine oxide comprising an alkyl group having 1 to 3 carbon atoms and two moieties selected from the group consisting of hydroxyalkyl groups; one alkyl moiety having 10 to 18 carbon atoms; A water-soluble phosphine oxide comprising 1 to 3 alkyl groups and two moieties selected from the group consisting of hydroxyalkyl groups; one alkyl moiety having 10 to 18 carbon atoms;
A non-polar, non-ionic detergent containing a water-soluble sulfoside containing 1 to 3 alkyl moieties and a moiety selected from the group consisting of hydroxyalkyl moieties.

6, 6 to 30 carbon atoms, preferably 10 to
Alkyl polysaccharides having hydrophilic groups containing 16 carbon atoms and polysaccharides such as polyglycosides, hydrophilic groups having 1.5 to 10, preferably 1.5 to 3, most preferably 1.6 to 2.7 saccharide units. Any reduced caccalides having 5 or 6 carbon atoms can be used, for example, the glucose, galactose and galactosyl moieties can be replaced with glucosyl moieties. The hydrophobic group is 2,
It can be attached at the 3 or 4 position, resulting in glucose or galactose as opposed to glucide or galactoside. The linkage between the saccharides is 1-position of the additional saccharide unit and 2-, 3-, 4- and / or
Or it could be between sixth place. In some cases, although not preferred, a polyalkylene oxide may be present to link the hydrophobic and polysaccharide moieties. Preferred alkylene oxides are ethylene. A typical hydrophobic group is an alkyl group, which has about 8 to about 8 carbon atoms.
18, preferably 10 to 16, which may be any of saturated, unsaturated, branched and unbranched groups. Preferred alkyl groups are straight-chain saturated groups. The alkyl group is
It can contain up to 3 hydroxy and / or polyalkylene oxide groups, up to 10, preferably less than 5,
Most preferably, it may contain zero alkylene oxide moieties. Suitable alkyl polysaccharides include octyl, nonyldecyl, undecyldodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl, di-, tri-,
There are tetra-, penta- and hexaglucoside, galactoside, lactoside, glucose, fructoside, fructose and / or galactose. Suitable mixtures include coconut alkyl, di-, tri-, tetra- and pentaglucosides, as well as talloalkyl, tetra-, penta- and hexaglucosides.

7, a general formula: R7-CO-NR8R8 wherein R7 is an alkyl group having 2 to 21, preferably 9 to 17 carbon atoms, each R8 is hydrogen, hydroxyalkyl having 1 to 4 carbon atoms. Group, and-(C2H4O) n
A surfactant for cleaning aliphatic amines having H, wherein n is 1 to 3, preferably 1.

Fluorescent Brightener / Brightener In practicing the present invention, virtually any known anionic fluorescent brightener and / or fluorescent brightener can be used. Such anionic fluorescent agents include sodium 4,4'-bis- (2-diethanolamino-4-anilino-S-triazin-6-ylamino) -stilbene-2: 2'-disulfonate, 4'-bis-
(2-morpholino-4-anilino-S-triazine-6
-Ylamino) -stilbene-2: 2'-disulfonate, sodium 4,4'-bis- (2,4-diaanilino-S
-Triazin-6-ylamino) -stilbene-2: 2 '
-Disulfonate, sodium 4,4'-bis- (2-anilino-4- (n-methyl-N-2-hydroxyethylamino) -S-triazin-6-ylamino) -stilbene-2: 2'- Disulfonate, sodium 4,4'-bis- (4-phenol-2,1,3-trizol-2-
Yl) -stilbene-2: 2'-disulfonate, sodium 4,4'-bis-2-anilino-4- (1-methyl-
2-hydroxyethylamino) -S-triazine-6-
Ilamino) -stilbene-2: 2'-disulfonate and sodium 2 (stilbene-4 "-) naphth-1 ',
2 ': 4,5) -1,2,3-triazole-2 "-sulfonate, diaminostilbene disulfonic acid-cyanuric chloride, distyrylbiphenyl, naphthotriazolestilbene, 7-dimethylamino-4-methylcoumarin,
7-diethylamino-4-methylcoumarin, 4,4'-
Bis [(4,6-dianilino-triazin-2-yl)
Amino] -2,2'stilbene disulfonic acid, 4,4'-
Bis [(4-anilino-6-bis [(2-hydroxyethyl) amino] -S-triazin-2-yl) amino]
-2,2'stilbene disulfonic acid, 4,4'-bis [(4-anilino-6-morpholino-S-triazin-2-yl) amino] -2,2'stilbene disulfonic acid, 4,4'-bis [(4-anilino-6 [N-2-hydroxyethyl-N-methylamino] -S-triazin-2-yl) amino] -2,2'stilbene disulfonic acid disodium salt, 4,4'-bis [ (4-anilino-6
-[2-hydroxyhydroxylpropyl) amino]-
S-triazin-2-yl) amino] -2,2'-stilbenzsulfonic acid disodium salt, 2,2- (4,4 '
-Biphenylenedivinylene) -disodium dibenzenedisulfonate, and 4, [2H-naphthol (1,2-
d) Triazol-2-yl] -2-stilbenesulfonic acid sodium salt. Currently the most preferred optical brighteners are: That is, 4,4'-bis [(4-anilino-6- [bis (2-hydroxyethyl) amino] -S-triazin-2-yl) amino] -2,2'stilbene disulfonic acid, (DASC
-2) * 4,4'-bis [(4-anilino-6- [N-2-hydroxyethyl-N-methylamino] -S-triazine-
2-yl) amino] -2,2 'stilbene disulfonic acid disodium salt (DASC-4) * and 4- [2H-naphthol (1,2-d) triazole-2
-Yl] -2-stilbenesulfonic acid sodium salt (NT
S-1) *. Nonionic brighteners, such as p- [3- (p-chlorophenyl) -2-pyrazolin-1-yl] benzenesulfonamide (P-1) *, can also be mixed with the granular detergents of the present invention. (Note) * indicates an industrial name.

Builders The granular cleaning composition of the present invention has at least 10%
In particular, water-soluble inorganic and organic electrolytes are included as builder for washing. Suitable electrolytes have an equivalent weight of less than 210,
In particular, it is less than 100 and contains a common alkaline polyvalent calcium ion sequestering agent. The builder can also include a water-soluble calcium ion exchange material.

Non-limiting examples of suitable water-soluble inorganic cleaning builders include alkali metal carbonates, borates, phosphates, polyphosphates, bicarbonates, silicates, sulfates and chlorides.
Specific examples of such salts include sodium and potassium tetraborate, perborate, bicarbonate, carbonate, tripolyphosphate, orthophosphate, pyrophosphate, hexametaphosphate, and sulfate.

Examples of suitable water-soluble organic washing builders include water-soluble aminocarboxylates and aminopolyacetates, such as sodium glycinate and potassium glycinate, ethylenediaminetetraacetate, nitrilotriacetate and N- (2-hydroxyethyl) diamine. There are tolodiacetate and diethylenetriaminepentaacetate; examples of water-soluble salts of phytic acid include sodium phytate and potassium phytate; examples of water-soluble polyphosphates include ethane-1-hydroxy-
There are sodium, potassium and lithium salts of 1,1-diphosphonic acid and sodium, potassium and lithium salts of ethylenediphosphonic acid; examples of water-soluble polycarboxylates include lactic acid, succinic acid, malonic acid, maleic acid,
Citric acid, carboxymethyloxysuccinic acid, 2-oxo-oxa-1,1,3-propanetricarboxylic acid, 1,
There are 1,2,2-ethanetetracarboxylic acid, cyclopentane-cis, cis, cis-tetracarboxylic acid, melitic acid and pyromellitic acid; examples of water-soluble organic amines and amine salts include monoethanolamine, diethanolamine and these. There is salt.

Another type of cleaning builder useful in the compositions of the present invention comprises a water-soluble substance capable of forming an insoluble reaction product using a cation of water hardness, preferably in combination with a crystal nuclide. The detergency builder, wherein the crystallization seed provides a growth point for the reaction product.

Yet another type of cleaning builder useful in the compositions of the present invention is an insoluble sodium aluminosilicate, particularly having a calcium ion exchange capacity of at least 200 milligram equivalents per gram, and
It has a calcium ion exchange rate of at least 2 grams per gram per minute.

Additional Ingredients The composition for granules of the present invention can be supplemented with conventional additives conventionally used in compositions for detergents. In some cases, the component used has a molecular weight of about 400
About 0.1% to 10% by weight containing from about 10,000 to about 10,000 water-soluble salts of carboxymethylcellulose, carboxyhydroxymethylcellulose and polyethylene glycol.
Consisting of an antisedimentation inhibitor. Also, dyes, pigments optical brighteners and fragrances, enzymes, anti-cracking agents such as sodium sulfosuccinate, preservatives such as sodium benzoate, alkali metal or alkali earth metal salts of silicic acid, soapy water Modulator or suppression by (foam)
ssing) agents, natural and synthetic microcrystalline waxes and microcrystalline wax oxides, inorganic and organic peroxide peroxide brighteners, polyphosphonic acids and acid salts. These materials are commonly used in detergent formulations and are used at normal concentrations when practicing the present invention.

Uses and Methods of Preparation The granular detergent compositions of the present invention are typically used in aqueous solutions having a concentration of about 100 to about 3,000 ppm, especially about 500 to about 1,500 ppm.

The detergent composition of the present invention is produced by the following conventional method. For example, the granular detergent composition of the present invention is obtained by spray drying a crutcher mix containing a brightener, a cationic surfactant and a builder component,
Next, the spray-dried particles are produced by absorbing a liquid or molten nonionic surfactant. This method is particularly valuable when the builder is an aluminosilicate and an ion exchange material. In a variant of this method, the detergent composition contains an aluminosilicate builder and the nonionic surfactant is mixed with the crutcher mix for spray drying. However, the surfactant component is premixed before adding the aluminosilicate builder.

In another method, the brightener, builder, and optional additives are spray dried in a conventional manner to form a base powder composition, and the quaternary ammonium cationic surfactant is then retained for this purpose. It can be added to the base powder as a mixture of about 1: 1 with a given builder or filler, or as a mixture with, for example, urea. Alternatively, a cationic surfactant can be sprayed onto the powder, or added as dry mixed spherules agglomerated with an inorganic or organic flocculant, or spray dried separately to the base. It can be added to the powder as dry mixed particles. Alternatively or alternatively, the cationic surfactant and the base powder composition can be independently spray dried in separate stages in a multi-stage spray drying tower.

At present, a desirable method for producing a granular laundry detergent is to mix a dry powder component such as a builder, a fluorescent agent, an anti-cracking agent and the like to obtain a substantially homogeneous mixture. The liquid material, such as a nonionic surfactant and a cationic surfactant, is then mixed with the dry mixture to form a wet powder composition. The wet powder composition is then sprayed with a liquid flocculant such as sodium silicate.

The nonionic surfactant used in the best method is available from Shell Chemical under the trade name Neodol 25-7. The quaternary ammonium cationic surfactant used in the top method was isotridecyloxypropyl-bis (2-hydroxyethyl) methylammonium chloride, trade name Tomer (Toma).
h) Available from Exxon as Q-17-2. The bleach used in the best method is DASC-2,
Available under the trade name Tinopal UNPA-GX from Ciba Geigy.

Experimental Method, Results, and Examples The evaluation of the detergent composition was performed in the following examples.

A laboratory-scale washing machine similar to an agitated household washing machine [Terg-Tometer]
Made by US Testing Company]
And washed. An appropriate amount of detergent formulation is controlled for hardness.
Liters of water. The washing temperature, the stirring speed, the washing time and the washing time can be adjusted by the above-mentioned Terda O. Tometa.
After washing, washing (by machine or hand), and drying, the detergency was determined from the change in reflectance of the cloth. How to assign test points is (as
(sigment of formulas to the test spots) It was randomized using a simple pure random number table.

The efficiency of the cleaning composition was determined from the reflectance obtained by measuring all fabrics before and after washing using a Gardner color difference meter.
Each fabric was individually set in a reflectometer and covered with a white standard ceramic plate. For cloth contaminated with Bandy black clay (Bandy black clay soil cloth), only the Rd value could be measured. In addition to the Rd value, all the fabrics were able to observe the a value and the b value. The whiteness index (W1) was calculated from the Rd value, a value and b value using a reflectometer.

 The types of contamination evaluated are as follows.

Bandy black clay:
An artificially soiled cloth prepared by a dry soiling method in which the clay is applied to the cloth using a ball mill.

TFI: Printed stained cloth (based on mineral oil / carbon black) purchased from Test Fabrics Incorporated.

HCO: Contaminated cloth prepared by dipping in a mixture of lard, margarine and peanut oil / carbon black.

Grass: A contaminated cloth prepared by dipping in an aqueous solution of freshly cut grass.

Spangler: A contaminated cloth prepared by immersing it in a contaminated bath (synthetic fat, dust from air conditioners), stomp and dry.

EMPA: Contaminated cloth prepared by dipping in a mixture of olive oil / carbon black.

DMO: A contaminated cloth prepared by dipping in dirty motor oil.

Cotton, cotton / Dacron, processed cotton, cotton (cotto
n, cotton / Dacron, cotton with finish, cotton): Processed Dacron is used for Bandy Black Clay, TFI, grass,
Used for DMO, HCO and Spangler contamination. Cotton and cotton: Processed Dacron was used for EMPA contamination.

In the following examples, a cleaning composition was prepared by mechanically mixing the dry particulate component, mixing it with the liquid component, and spraying the resulting wet powder composition with a sodium silicate coagulant. In each example, the formulations of the various detergents tested are shown at the beginning of the table.

 All examples contain the indicated components in the indicated amounts.

These common components are hereinafter referred to as the base formulation, to which are added a fluorescent agent, a nonionic surfactant, a cationic surfactant and an anionic surfactant. The cationic surfactant includes a quaternary ammonium cationic surfactant included in the concept of the present invention and a quaternary ammonium cationic surfactant not included in the concept of the present invention.
Ammonium cationic surfactants are included. The latter cationic surfactant is used for comparison purposes.

 The contents of the abbreviations in the examples are as follows.

Optical brightener DASC-2: 4,4'-bis [(4-anilino-6- [bis (2-hydroxyethyl) amino] -s-triazin-2-yl)
Amino] -2,2'-stilbene disulfonic acid.

DASC-4: 4,4'-bis [(4-anilino-6- [N-2-hydroxyethyl-N-methylamino] -s-triazine-2
-Yl) amino] -2,2'-stilbene disulfonic acid disodium salt.

NTS-1: 4- [2H-naphthol (1,2-d) triazole-2-
Yl] -2-stilbenesulfonic acid sodium salt.

Nonionic surfactant Pareth 25-7: C12-15 ethoxylate with 7 moles of ethylene oxide.

Pareth 25-3: C12-15 ethoxylate with 3 moles of ethylene oxide.

712: 4C12 thioethylate with 7 moles of ethylene oxide.

AO: isotridecyloxypropyl bis (2-hydroxyethyl) amine oxide.

Quaternary ammonium cationic surfactants within the scope of the present invention Incat 1: isotridecyloxypropylbis (2-hydroxyethyl) methylammonium chloride Incat 2: isododecyloxypropylbis (2-hydroxyethyl) methylammonium chloride Incat 3: Isodecyloxypropyl bis (2-hydroxyethyl) methyl ammonium chloride Incat 4: N- (branched) C19 alkyloxypropyl bis (2-
(Hydroxyethyl) methylammonium chloride Incat 5: C12-15 linear alkyloxypropyl bis (2-hydroxyethyl) methylammonium chloride Incat 6: isotridecyloxypropylbis (3-hydroxypropyl) methylammonium chloride Incat 7: Isotri Decyloxypropylbis (dihydroxypropyl) methylammonium chloride Incat 8: N- (branched) C16 alkyloxypropylbis (2-
Hydroxyethyl) methylammonium chloride Incat 9: Tallowoxypropyl bis (2-hydroxyethyl) methylammonium chloride Incat 10: C10-12 alkyldioxypropylbis (3-hydroxypropyl) methylammonium chloride Incat 11: C10-12 alkyldi Oxypropylbis (poly (5) hydroxypropyl) methylammonium chloride Incat 12: C10-12 alkyldioxypropyltrimethylammonium chloride Quaternary ammonium cationic surfactant outside the scope of the invention Noncat-1 N-isotridecyloxy Propyl-N, N ', N'-tris (2-hydroxyethyl) -N, N'-dimethyl-1,
3-propanediammonium dichloride Noncat-2 cocotritrimethylammonium methylsulfate Noncat-3 ditallowdimethylammonium chloride Noncat-4 tallowbis (2-hydroxyethyl) methylammonium chloride Noncat-5 distearyldimethylammonium chloride Noncat-6 (branch Separation) C18 alkyl trimethylammonium chloride Noncat-7 Isotridecyloxypropyl bis (2-hydroxyethyl) amine Noncat-8 Benzethionium chloride monohydrate Anionic surfactant LAS Sodium dodecylbenzenesulfonate SLES C12-15 alkyl Sodium ethoxy sulfate As is evident from the reflectance data of the IFI, Spangter and DMO stained cloth tests, conclusively the cleaning composition of the present invention comprises:
The cleaning results are superior to cationic surfactants outside the scope of the present invention. According to the sum of all whiteness differences in the re-fouling cloth test, ie the degree to which the action of the fluorescent agent and the fouling is affected by the action of the surfactant, the composition of the present invention has the problem of re-fouling. , Suggesting that there is no adverse effect on the action of the fluorescent agent.

Test data shows that the detergent composition made in accordance with the present invention is a more potent detergent for removing oily stains than the nonionic surfactant alone. In addition, these compositions have minimal soil redeposition or loss of fluorescer when compared to formulations containing no cationic surfactant. Formulation 2-6, which is outside the scope of the invention,
Compared to -5, both formulations have anionic fluorescent brightener LAS
It can be seen that the addition of the compound of the present invention is superior. Although necessary for Formulations 2-6, it is not necessary to add LAS for the Formulations of the Invention.

It is evident from the data that the detergent composition of the invention has minimal redeposition and loss of whitening agent to soil and efficiently removes various soils from the fabric. Comparative formulation 3-4,3-
Unlike the formulation No. 5, the formulation of the invention has an optimal whitening (brig
No anionic surfactant is required to provide htening). In the case of the comparative formulation, some detergency is sacrificed to optimize whitening. When comparing the detergent formulations of the invention, there is almost no difference in the detergency or whitening ability even when an anionic surfactant is added. Therefore, it is not necessary to add an anionic surfactant to the composition of the invention in order to optimize the detergency and whitening property.

The above data shows the effectiveness of the detergent composition of the present invention in brightening blended fabrics by repeating successive washing cycles. The inventive detergent 4-2 brightens the fabric more than any other cationic / nonionic comparative formulation. Only when an anionic surfactant is used to suppress the comparative cationic surfactant, the whitening properties are comparable to those of the invention.

The above data demonstrates the use and effect of other etheramine-based quaternary ammonium cationic surfactants over a wide range of temperatures and water hardness.
Amine oxide AO-17-2 is a type of nonionic surfactant and does not adversely affect brighteners.

However, the detergency is not as strong as the formulation of the present invention containing a cationic surfactant.

The data show that the detergent of the invention is an effective laundry material, with minimal redeposition of dirt and no significant inhibition of the fluorescent agent. It can be seen from the performance of Formulations 6-5 that only branching of the carbon chain is not the key to determining the detergency and benefits of the optical brightener.

The data show that the addition of an anionic surfactant to the inventive formulation diminishes the detergency against oil stains. Therefore, the invention does not use anionic surfactants. Formula 7
At -6, severe oil re-adhesion that adversely affected the whiteness index occurred.

The data show the effectiveness of the inventive wash with minimal adverse effect on brighteners on the washing of various soiled cloths.

Example IX Removal of Bandy Black Clay Stain All formulations 8-0 to 8-7 were evaluated for cleaning effectiveness on fabrics contaminated with Bandy Black Clay. Washing conditions: 37.7 ° C, water hardness 129pmm
(9 grains / gallon). The results are shown in Table 9-1.

The data show the effect of the inventive detergent composition on the washing of contaminated fabrics while maintaining the effect of the fluorescent agent and avoiding soil redeposition.

Claims (8)

(57) [Claims] 1. At least one nonionic surfactant,
A particulate laundry detergent comprising at least one anionic fluorescent brightener, at least one builder, and at least one cationic surfactant comprising a quaternary ammonium compound, wherein the quaternary ammonium compound comprises: Three of the substituents are a lower alkyl group or a modified lower alkyl group, and the fourth substituent is a long-chain alkyl group or a modified alkyl group bonded to the nitrogen atom by an electronegative group, and the cation has A particulate laundry detergent wherein the negative effects on whitening agents and soil re-adhesion are reduced, wherein said electronegative groups are divalent groups directly linked to a positively charged nitrogen atom by a carbon-nitrogen bond. 2. The nonionic surfactant is present in the range of 7 to 25% by weight, the optical brightener is present in the range of 0.05 to 1.5% by weight, and the builder is present in the range of 10 to 75% by weight.
2. The granular laundry detergent according to claim 1, wherein said cationic surfactant is present in the range of 1 to 6% by weight. 3. The cationic surfactant is represented by the general formula: R ₁ -E _z R ₂ R ₃ R ₄ N + X wherein R ₁ is an alkyl group having 8 to 24 carbon atoms; R ₂ , R ₃ And R ₄ are the same or different groups,
Moreover, each of them is independently an alkyl group having 2 to 4 carbon atoms or a group represented by the formula H (OR ₅ ) x wherein R ₅ is an alkyl group having 1 to 4 carbon atoms and X is 1 to 4 E is a divalent electronegative group, and Z is an integer from 1 to 4, with the proviso that
At least one of R ₂ , R ₃ or R ₄ has 1 carbon atom
Or 4 alkyl groups].
The granular laundry detergent according to claim 1. 4. The electronegative group is represented by the formula: -A (CH ₂ ) c wherein A is -COO-, -OCO-, -O-O, -OCOO-,
Selected from the group consisting of -CONH-, -NHCO-, -OCONH-, and -NHCOO-]. 5. The granular laundry detergent according to claim 4, wherein the electronegative group is —OCH ₂ CH ₂ CH ₂ —. 6. The method of claim ₅ , wherein R ₁ and R ₂ each independently have the formula H (OR ₅ ) x— and R ₄ is methyl.
The granular laundry detergent according to any one of the preceding claims. 7. The granular laundry detergent according to claim 6, wherein R ₂ and R ₃ are each HOCH ₂ CH ₂ —. 8. The nonionic surfactant is present in an amount ranging from 7 to 25% by weight, and the optical brightener is present in an amount of from 0.05 to 25% by weight.
The builder is present in an amount ranging from 10 to 75% by weight, and the cationic surfactant is present in an amount ranging from 1 to 6% by weight. 4. A granular laundry detergent according to claim 3 which is present.