KR20220147321A - Detergent composition - Google Patents

Abstract

The present invention relates to a laundry detergent composition capable of suppressing or removing the smell of laundry after washing. The present invention provides the laundry detergent composition comprising at least one surfactant selected among polyethyleneimine (PEI) to which neither propoxylate nor ethoxylate is added; at least one anionic surfactant selected from anionic surfactants of a chemical formula 1; and nonionic surfactants of chemical formula 2.

Description

Laundry detergent composition {Detergent composition}

The present invention relates to a laundry detergent composition capable of suppressing or removing the smell of laundry after washing.

As people's living standards are improving and interest in quality of life has been highlighted, attention is being paid to the emotional part of the sense of smell by the scent and the hygiene part through sterilization and antibacterial through second-class washing, which is worn every day.

Conventional detergents have a disadvantage of only masking with a strong scent rather than a fundamental solution to the raw material odor of the detergent itself or the odor caused by washing behavior.

Recently, there are products that use a photocatalyst to give detergents a function, but there is a problem that blue spots appear when the laundry is soaked in the detergent for a long time.

In addition, the existing deodorization method is a method that paralyzes the sense of smell by using a stronger fragrance than the raw material odor or bad odor of the detergent. There was a problem that could cause.

An object of the present invention is to provide a laundry detergent composition that can substantially remove the smell of laundry after washing.

In order to achieve the object of the present invention, neither propoxylate nor ethoxylate is added polyethylene imine (polyethylene imine, PEI); and an anionic surfactant of Formula 1; and a nonionic surfactant of Formula 2; It provides a laundry detergent composition comprising; at least one surfactant selected from among.

<Formula 1>

R ₁ -OXY-SO ₃ -Z

(In Formula 1, R ₁ is C ₈ to C ₁₆ straight-chain alkyl or alkenyl, branched-chain alkyl or alkenyl, and X is (C ₂ H ₄ O) _n , where n is an integer from 1 to 15, Y is (C ₃ H ₆ O) _m , where m is an integer from 0 to 5, and Z is an alkali metal, alkaline earth metal ion, C ₁ to C ₃ alkanolamine and alkylalkanolamine salt having cationic polarity. It is one type selected from

<Formula 2>

R ₂ -O-(EO)m(PO)nH

(However, in Formula 2, R ₂ is a straight-chain alkyl, alkenyl or alkynyl group having 9 to 18 carbon atoms, EO is ethylene oxide, and x is 2 to 50 as an average added mole number of ethylene oxide, PO is propylene oxide, , n represents the average number of added moles of propylene oxide, 0 to 6)

According to one embodiment, the molar average molecular weight of the polyethyleneimine is preferably 800 to 25,000. .

According to one embodiment, the polyethyleneimine is preferably included in an amount of 0.05 to 3.0% by weight of the total composition.

According to one embodiment, the surfactant is preferably included in an amount of 5 to 40% by weight of the total composition.

According to one embodiment, it is preferable that the ratio of the anionic surfactant to the polyethyleneimine is included in a weight ratio of 5:1 to 20:1.

According to one embodiment, it is preferable that the pH of the laundry detergent composition is 8.5 to 10.5.

According to one embodiment, the laundry detergent composition is preferably used for suppressing or removing the smell of laundry after washing.

The laundry detergent composition according to the present invention not only has excellent washing power, but also can remove or suppress odors such as odors and raw material odors that may remain in the laundry after washing, so that the user can feel refreshed after washing.

In particular, since odor suppression is not simply a method of covering an existing fragrance with a new fragrance, it is possible to solve a problem that a more severe odor may be generated due to improper storage or improper drying.

Hereinafter, the present invention will be described in more detail.

The present invention includes polyethylene imine (PEI) to which neither propoxylate nor ethoxylate is added; and an anionic surfactant of Formula 1; and a nonionic surfactant of Formula 2; It provides a laundry detergent composition comprising; at least one surfactant selected from among.

<Formula 1>

R ₁ -OXY-SO ₃ -Z

(In Formula 1, R ₁ is C ₈ to C ₁₆ straight-chain alkyl or alkenyl, branched-chain alkyl or alkenyl, and X is (C ₂ H ₄ O) _n , where n is an integer from 1 to 15, Y is (C ₃ H ₆ O) _m , where m is an integer from 0 to 5, and Z is an alkali metal, alkaline earth metal ion, C ₁ to C ₃ alkanolamine and alkylalkanolamine salt having cationic polarity. It is one type selected from

According to an embodiment of the present invention, the anionic surfactant is a straight-chain or branched alkylbenzenesulfonic acid, alkylsulfuric acid, alkenylsulfuric acid, alphasulfone fatty acid ester, alphaolefinsulfonic acid, alkylethersulfonic acid, alkylethercarboxylic acid, alkenyl At least one selected from the group consisting of ether carboxylic acid, alkane sulfonic acid, sulfosuccinic acid alkyl ester, acylamino alkane sulfonic acid, alkyl ester sulfonic acid, alkenyl ester sulfonic acid, alkyl ether, alkenyl ether, and salts thereof, preferably A salt in which an alkylene oxide having an average added mole number of 0.5 to 6 of an alkylene oxide having 10 to 20 carbon atoms is added to alkylbenzenesulfonic acid, alkylethersulfonic acid and alkenylestersulfonic acid may be used.

<Formula 2>

R ₂ -O-(EO)x(PO)nH (wherein, in Formula 2, R ₂ is a straight-chain alkyl, alkenyl or alkynyl group having 9 to 18 carbon atoms, EO is ethylene oxide, and x is the average added mole number of ethylene oxide 2 to 50, PO is propylene oxide, and n is 0 to 6 to represent the average added mole number of propylene oxide)

In the case of using polyethyleneimine to which either propoxylate or ethoxylate is added, the deodorizing effect may be weakened.

According to one embodiment, the molar average molecular weight of the polyethyleneimine is preferably 800 to 25,000.

If the molar average molecular weight is less than 800, the content of unreacted substances in polyethyleneimine increases, which may adversely affect the odor removal function and product stability and safety. As it becomes difficult, the deodorization effect may be reduced.

According to one embodiment, the polyethyleneimine is contained in an amount of 0.05 to 3.0% by weight, preferably 0.3 to 1.5% by weight of the total composition. If the content of polyethyleneimine is included less than the above range, the deodorizing effect may be lowered, and if it is included in a large amount, the performance of the product may be deteriorated.

According to an embodiment, the surfactant is included in an amount of 5 to 40% by weight, preferably 10 to 30% by weight of the total composition. If the content of the surfactant is too small, the phase stability at high temperature is lowered, and if the content is too large, a gelling phenomenon may occur and thus usability may be deteriorated.

According to one embodiment, the ratio of the anionic surfactant to the polyethyleneimine is preferably included in a weight ratio of 5:1 to 20:1, preferably 10:1 to 20:1. If the content of the anionic surfactant is relatively small compared to the content of polyethyleneimine, phase stability may be deteriorated, and if it is included in a relatively large amount, the deodorizing function may be lowered.

According to one embodiment, it is preferable that both the anionic surfactant and the nonionic surfactant are included, and the anionic surfactant and the nonionic surfactant may be included in a weight ratio of 3:1 to 1:3, and the cleaning power can be higher

According to one embodiment, it is preferable that the pH of the laundry detergent composition is 8.5 to 10.5. This is because there is a problem in that the stability of polyethyleneimine in the product is lowered in a weakly acidic or neutral pH range.

According to one embodiment, the laundry detergent composition is preferably used for suppressing or removing the smell of laundry after washing. Although the composition according to the present invention is excellent in washing effect, it can suppress or remove odors that may remain in the laundry, odors of raw materials of laundry detergent, and fragrances caused by reactions such as additives, so that the user can substantially Allows you to feel the freshness of washing.

The laundry detergent composition according to the present invention is preferably used as a liquid detergent composition. As the solvent that can be preferably used, water and organic solvents may be used.

The laundry detergent composition according to the present invention may further comprise an electrolyte. The electrolyte exhibits a thickening effect in the composition containing the surfactant, and increases the solubilization stability of the surfactant and the additive, thereby improving the washing power of the laundry detergent composition.

The type of the electrolyte is not particularly limited, and any electrolyte used in the art may be used without limitation. For example, a salt of a monovalent or polyvalent organic or inorganic acid may be used as the electrolyte. The salt may be chloride, bromide, iodide, acetate, bicarbonate, phosphate, citrate, sulfate, polyphosphate, pyrophosphate, triphosphate, tetraphosphate, carbonate, hydroxide, alkali metal salt, or mixtures thereof. As the counter cation of the anion of the salt, sodium, calcium, magnesium, zinc, aluminum, iron, or the like may be used.

The electrolyte may be used in an amount of 0.1 to 10% by weight, or 1 to 5% by weight based on the total weight of the laundry detergent composition. When the content of the electrolyte is less than 0.1% by weight, the synergistic effect of solubilization stability and cleaning power is insignificant, and when it exceeds 10% by weight, there is a risk that the salts of the electrolyte interfere with the structuring of the surfactants.

The laundry detergent composition of the present invention may include an alkali material as a kind of the electrolyte, and the alkali material may increase the cleaning power of the surfactant. As the alkali material, any component that is completely soluble in water can be used (here, completely soluble in water means completely soluble in water at 25° C. based on the standard amount of laundry detergent used. Specifically, the alkali material silver, ethylenediaminetetraacetic acid, potassium hydroxide, potassium carbonate, sodium gluconate, sodium carbonate, sodium hydrogen carbonate.

The laundry detergent composition according to the present invention, in addition to the above-described components, additionally an organic solvent, detergent auxiliary, stabilizer, enzyme, preservative, dye, viscosity modifier, metal ion rod, within the scope not impairing the object of the present invention It may further include one or more additives selected from the group consisting of a collector, a thickener, a solubilizer and a pH adjuster.

As the organic solvent, mono- or polyhydric alcohol may be used. Specifically, methanol, ethanol, propanol, isopropanol, butanol, glycerin, and mixtures thereof may be used as having 1 to 4 carbon atoms.

As the preservative, ethanol, phenoxy ethanol, benzisothiazolinone, pentynediol, parabens, sodium benzoate, etc. may be used, but is not limited thereto.

The solubilizing agent includes polyethylene glycol, glycerin, propylene glycol, alkanols having 1 to 4 carbon atoms, alkylaryl sulfonates, carboxylic acid sulfates, carboxylic acid sulfonate salts, urea, hydrocarboxylate, carboxylate, or mixtures thereof. can be used As the alkanol having 1 to 4 carbon atoms, methanol, ethanol, propanol, isopropanol, linear or branched butanol, and the like may be used.

The pH adjusting agent is excellent in removing oil stains, and any low molecular weight inorganic or organic compound that provides neutrality may be used. Specifically, a liquid alkali agent of monoethanolamine, diethanolamine, triethanolamine, sodium hydroxide, potassium hydroxide, and citric acid, malic acid, salicylic acid, tartaric acid, lactic acid, acetic acid, sorbic acid, benzoic acid, and the like can be used.

The metal ion scavenger can be used to increase the formulation and phase stability of the liquid composition of the present invention, and EDTA, EDTA-2Na, EDTA-4Na, DTA, NTPA, phosphates, polyacrylic acid, gluconic acid, sorbates , one or more selected from the group consisting of sodium bicarbonate may be used.

In addition, the enzyme is used to further increase the cleaning effect of the laundry detergent composition, and mainly alkaline proteolytic enzymes can be used. Specifically, it can be used by selecting from the group consisting of protease, lipase, amylase, mannanase, and mixtures thereof.

Hereinafter, the present invention will be described in detail by way of Examples. However, the following examples are only illustrative of the present invention, and the content of the present invention is not limited to the following examples.

Examples and Comparative Examples

Laundry detergent compositions according to Examples and Comparative Examples were prepared by mixing at a temperature of 25 to 40° C. with the configurations shown in Tables 1 to 5 below.

(Unit: % by weight) ingredient Example One 2 3 4 5 6 7 8 9 PEI-1* 0.05 0.05 0.05 0.1 0.5 1.0 3.0 3.0 3.0 PEI-2 - - - - - - - - - PEI-3 - - - - - - - - - anionic surfactant 5.0 - 8 10 10 10 15 15 20 nonionic surfactant - 5.0 8 10 10 10 10 20 20 Additives ^** 10 10 10 10 10 10 10 10 10 water remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount Sum 100 100 100 100 100 100 100 100 100

(Unit: % by weight) ingredient Example 10 11 12 13 14 15 16 17 18 PEI-1 1.0 - - - - - - 0.5 - PEI-2 - 0.5 1.0 3.0 - - - 0.5 0.5 PEI-3 - - - 0.5 1.0 3.0 - 0.5 negative ions
Surfactants 20 10 10 15 10 10 15 10 10 nonionic
Surfactants 20 10 10 10 10 10 10 10 10 Additives ^** 10 10 10 10 10 10 10 10 10 water remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount Sum 100 100 100 100 100 100 100 100 100

(Unit: % by weight) ingredient Example 19 20 21 22 23 PEI-1 0.5 - - 0.5 0.5 PEI-2 - 1.0 1.0 - - PEI-3 0.5 - - - - Anionic surfactant 1 10 20 - 2.5 5.0 Nonionic Surfactant 1 10 - 20 10 10 Additives ^** 10 10 10 10 10 water remaining amount remaining amount remaining amount remaining amount remaining amount Sum 100 100 100 100 100

(Unit: % by weight) ingredient Example 24 25 26 27 28 30 32 PEI-1 0.01 0.03 - - - 0.5 3.0 0.5 - PEI-4 - - 0.05 1.0 3.0 - - - One negative ions
Surfactants 2 6 10 10 15 2.5 15 10 25 nonionic
Surfactants 11 12 10 10 12 16 25 10 25 Additives ^** 10 10 10 10 10 10 10 10 10 water remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount remaining amount Sum 100 100 100 100 100 100 100 100 100

(Unit: % by weight) ingredient Comparative Example 1 Comparative Example 2 Comparative Example 3 PEI-4 - - - PEI-5 One - - PEI-6 - One - Anionic surfactant 1 10 10 10 Nonionic Surfactant 1 - - 10 Additives ^** 10 10 10 water remaining amount remaining amount remaining amount Sum 100 100 100

- PEI-1: polyethyleneimine (Lupasol FG, BASF, molar average molecular weight 800)

- PEI-2: polyethyleneimine (Lupasol G 20 wfr, BASF, molar average molecular weight 1,300)

- PEI-3: polyethyleneimine (Lupasol HF, BASF, molar average molecular weight 25,000)

- PEI-4: polyethyleneimine (Lupasol P, BASF, molar average molecular weight 750,000)

-PEI-5: ethoxylate-propoxylate-added polyethyleneimine

(Lupasol types, BASF))

-PEI-6: EO-added Polyethyleimine Sokalan HP20, BASF

-Anionic surfactant: ethylene oxide was added to a linear alkylbenzenesulfonate (product name: ASCO 96, AK Chemtech Co., Ltd.) obtained by neutralizing benzenesulfonic acid having an alkyl group having 10 to 14 carbon atoms with sodium and a fatty alcohol having 10 to 16 carbon atoms. As the sum of alkylethoxy sulfate neutralized with sodium or alkylethoxy sulfate (product name: ASCO 24 series, AK Chemtech Co., Ltd.) neutralized with sodium and ethylene oxide and propoxyylene oxide added to fatty alcohols having 10 to 16 carbon atoms and neutralized with sodium , A mixture of straight-chain alkylbenzenesulfonic acid and sodium-neutralized alkylethoxy sulfate in a ratio of 1:1.2

- Nonionic Surfactant 1: Polyoxyethylene alkyl ether having a mixed alkyl group having 9 to 14 carbon atoms and a sum of EO added moles of 7 to 15 moles (Product name: SUNFOL LA-9, SFC)

- **: Additives are mixed in a ratio of 5 to 8.0% of a mixture of solvent, polymer and enzyme and 0.5 to 2.0% of a mixture of preservative, color and fragrance.

Experimental Example 1: Evaluation of odor inhibition efficacy (sensory evaluation)

Make a test piece by applying sebum stains to 10A white cloth (cotton) and 30A white cloth (polyester) with a size of 40 cm * 40 cm. Cut the sebum source (Sebum ASTM (ASTM 4265-98), CFT) selected according to the composition of human contamination into a size of 10 cm * 20 cm and put 20 g in a pocket-shaped nonwoven fabric (LIVSEN SS NA NA1, Toray Advanced Materials). seal it Put the prepared sebum-contaminated bag and 2 specimens (1 sheet of 10A, 1 sheet of 30A) into a drum washing machine and wash with a standard course (washing water temperature of 40°C), and then apply the sebum contamination to the test piece. The specimens coated with sebum contamination are washed using a washing machine, aged for 24 hours in a chamber at 35°C simulating an indoor drying environment in summer, and then completely dried. . Table 6 shows the evaluation criteria.

※Standard of odor suppression efficacy Odor suppression effect ◎: Very good (smells good) ○: Excellent (no smell) △: Normal (weak bad smell remains) X: Bad (there is a lot of bad smell)

Experimental Example 2: Phase Stability Evaluation

Changes over time according to stability conditions such as -5°C, 25°C, 40°C, and 60°C were observed and determined according to the standards shown in Table 7.

※Phase stability standard phase stability ◎: very good (no phase separation phenomenon) ○: Excellent (fine suspension occurs) △: Moderate (severe suspension occurs) X: bad (phase separation)

Experimental Example 3: Evaluation of cleaning power

1g of sample per 1L of water and artificial soiled cloth were put into agitation and mixing detergency tester (Terg-O-tometer, United States TestingCo., Inc.) 10 minutes and rinsing were performed twice each for 3 minutes, respectively, and the cleaning effect on the artificial contaminated fabric before and after washing was measured by measuring the whiteness with a colormeter (colormeter, Japan testing Co., INC.), and calculated according to the following formula. Detergency was determined by the evaluation criteria shown in Table 8 below.

Cleaning power (%) = {(C-B)/(A-B)}*100

A: Whiteness of white cloth

B: Whiteness of contaminated cloth before washing

C: Whiteness of contaminated cloth after washing

Criteria for cleaning power
(K10D, cotton) ◎: Very good (cleaning power 45% or more) ○: Excellent (cleaning power 40 ~ 45%) △: Normal (cleaning power 35 to 40%) X : Poor (less than 35% cleaning power) Criteria for cleaning power
(K20D, cotton, poly blend) ◎: Very good (cleaning power 45% or more) ○: Excellent (cleaning power 40 ~ 45%) △: Normal (cleaning power 35 to 40%) X : Poor (less than 35% cleaning power) Criteria for cleaning power
(JIS, cotton) ◎: Very good (cleaning power 45% or more) ○: Excellent (cleaning power 40 ~ 45%) △: Normal (cleaning power 35 to 40%) X : Poor (less than 35% cleaning power)

The artificial stained fabric used K10D (Center For Testmaterials BV) and JIS (wet artificial stained fabric), the K10D stained fabric was a stained fabric made with oily stains on cotton fibers, and the K20D stained fabric was transverse to oily stains on the blended fiber. Each sample was cut into 8x8cm length and 6 sheets were used. In addition, the JIS stained cloth was artificially made from contamination that may occur in the human body on cotton fibers, and was cut into 5x5cm in width and length and 8 sheets were used for each sample.

The experimental results are shown in Tables 9 to 13 below.

Item condition over time Example image stability temperature period One 2 3 4 5 6 7 8 9 -5 ℃ 2 weeks ○ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 25 ℃ 4 weeks ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 40 ℃ 4 weeks ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 60 ℃ 1 week ◎ ○ ◎ ◎ ◎ ◎ ○ ○ ◎ Odor suppression effect
(sensory evaluation) ○ ○ ○ ○ ◎ ◎ ◎ ◎ ◎ cleaning power K10D △ △ ◎ ◎ ◎ ◎ ○ ◎ ◎ K20D △ △ ○ ◎ ◎ ○ ○ ○ ○ JIS △ △ ◎ ◎ ◎ ◎ ◎ ◎ ◎

Item condition over time Example image stability temperature period 10 11 12 13 14 15 16 17 18 -5 ℃ 2 weeks ◎ ◎ ◎ ○ ◎ ◎ ○ ◎ ◎ 25 ℃ 4 weeks ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 40 ℃ 4 weeks ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 60 ℃ 1 week ◎ ◎ ◎ ◎ ◎ ◎ ○ ◎ ◎ Odor suppression effect
(sensory evaluation) ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ cleaning power K10D ◎ ◎ ◎ ○ ○ ○ ○ ◎ ○ K20D ◎ ○ ○ ○ ○ ○ ○ ○ ○ JIS ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎

Item condition over time Example image stability temperature period 19 20 21 22 23 -5 ℃ 2 weeks ◎ ○ ◎ ◎ ◎ 25 ℃ 4 weeks ◎ ◎ ◎ ◎ ◎ 40 ℃ 4 weeks ◎ ◎ ◎ ◎ ◎ 60 ℃ 1 week ◎ ◎ ○ ◎ ◎ Odor suppression effect
(sensory evaluation) ◎ ◎ ◎ ◎ ◎ cleaning power K10D ◎ ○ △ △ ○ K20D ○ △ △ ○ ○ JIS ◎ ○ △ △ △

Item condition over time Example image stability temperature period 24 25 26 27 28 30 32 -5 ℃ 2 weeks ◎ ◎ ○ △ △ △ △ △ △ 25 ℃ 4 weeks ◎ ◎ ○ ○ ○ ○ ◎ ○ △ 40 ℃ 4 weeks ◎ ◎ ○ ○ △ △ ◎ △ △ 60 ℃ 1 week ◎ ◎ △ △ △ △ ○ △ △ Odor suppression effect
(sensory evaluation) ○ ○ ○ ○ ○ ○ ◎ ○ ○ cleaning power K10D ◎ ◎ ◎ ○ ○ △ ◎ △ ◎ K20D ◎ ◎ ◎ ○ ◎ △ ○ △ ◎ JIS ◎ ◎ ◎ ◎ ◎ ○ ◎ △ ◎

Item condition over time comparative example image stability temperature period One 2 3 -5 ℃ 2 weeks ○ ○ ○ 25 ℃ 4 weeks ◎ ◎ ◎ 40 ℃ 4 weeks ○ ○ ◎ 60 ℃ 1 week △ ○ ○ Odor suppression effect
(sensory evaluation) X X X cleaning power K10D ○ ○ ○ K20D ○ ○ ○ JIS ○ ○ ◎

As can be seen from the above table, Comparative Examples 1 and 2 have good phase stability, but the odor suppression effect, which is a key function of the present patent, is inferior to that of Examples.

Example 32 is a case where the content of the surfactant is out of the preferred range, and although the cleaning power is good, the odor suppression effect and phase stability are somewhat inferior compared to the other examples.

Comparative Example 3 is a case in which PEI, which is the core raw material of the present patent, is not used, and has good phase stability but poor odor suppression effect.

Experimental Example 4: Evaluation of deodorization performance

After simulating the KS K 0891 deodorization performance test method, the fabric absorbs the odor-causing substance, washes it, and analyzes it with GC-MS. The odor-causing substances were isovaleric acid, which is the main component of foot odor, and 4-ethenylpyridine, which is the main component of cigarette odor. The deodorization performance standards are shown in Table 14, and the results are shown in Table 15.

※Deodorization performance standard deodorization performance ◎: Very good (removal rate of 99% or more compared to the initial stage) ○: Excellent (removal rate of 95% or more compared to the initial stage) △: Normal (90% or more removal rate compared to initial stage) X: Bad (less than 90% of initial removal rate)

Item condition over time Example comparative example 3 5 19 One 2 3 Deodorization performance (analysis of GC-MS certified laboratory) ◎ ◎ ◎ △ △ △

As can be seen from the above results, it can be seen that only when the laundry detergent composition constructed according to the present invention is used, the deodorization performance is excellent, and the washing ability and stability are good.

In addition, when out of each content range or the molecular weight range of polyethyleneamine, the odor removal effect is somewhat lowered, but it is more effective than when using PEI in which ethoxylate and propoxylate are added together or only ethoxylate is added is found to be excellent.

Claims (7)

polyethylene imine (PEI) with neither propoxylate nor ethoxylate added; and
at least one anionic surfactant selected from the anionic surfactant of Formula 1; and a nonionic surfactant of Formula 2; A laundry detergent composition comprising one or more surfactants selected from among.
<Formula 1>
R ₁ -OXY-SO ₃ -Z
(In Formula 1, R ₁ is C ₈ to C ₁₆ straight-chain alkyl or alkenyl, branched-chain alkyl or alkenyl, and X is (C ₂ H ₄ O) _n , where n is an integer from 1 to 15, Y is (C ₃ H ₆ O) _m , where m is an integer from 0 to 5, and Z is an alkali metal, alkaline earth metal ion, C ₁ to C ₃ alkanolamine and alkylalkanolamine salt having cationic polarity. It is one type selected from

<Formula 2>
R ₂ -O-(EO)m(PO)nH
(However, in Formula 2, R ₂ is a straight-chain alkyl, alkenyl or alkynyl group having 9 to 18 carbon atoms, EO is ethylene oxide, and x is 2 to 50 as an average added mole number of ethylene oxide, PO is propylene oxide, , n represents the average added mole number of propylene oxide 0 to 6). According to claim 1,
The molar average molecular weight of the polyethyleneimine is 800 to 25,000 laundry detergent composition. According to claim 1,
A laundry detergent composition comprising the polyethyleneimine in an amount of 0.05 to 3.0% by weight. According to claim 1,
The surfactant is 5 to 40% by weight of the laundry detergent composition. According to claim 1,
A laundry detergent composition comprising a ratio of the anionic surfactant to the polyethyleneimine in a weight ratio of 5:1 to 20:1. According to claim 1,
A laundry detergent composition having a pH of 8.5 to 10.5 of the laundry detergent composition. According to claim 1,
The laundry detergent composition is a laundry detergent composition for suppressing the smell of laundry after washing.