KR101421350B1 - Liquid detergent composition - Google Patents

Abstract

The present invention relates to a liquid detergent composition comprising, based on 100 parts by weight of a liquid detergent composition, a) 40 to 80 parts by weight of at least one nonionic surfactant represented by formula (1); b) 1 to 30 parts by weight of an anionic surfactant; c) 0.1 to 5 parts by weight of a fatty acid salt; And d) from 0.05 to 1 part by weight of the cationic polymer.
[Chemical Formula 1]
RO- (EO) x-Aw-H
(Wherein R is a linear or branched alkyl or alkenyl group having 9 to 16 carbon atoms, EO is an oxyethylene group, A is an oxypropylene group (PO) or oxybutylene group (BO) Wherein the average addition mole number of the oxide is 5 to 20, and w is the average addition mole number of the propylene oxide or the butylene oxide is 0.5 to 10.)
The liquid detergent composition of the present invention is excellent in phase stability even at a low temperature and excellent in solubility and dispersibility in cold water even when an organic solvent is not used. And is excellent in cleaning power and rinsability.

Description

[0001] Liquid detergent composition [0002]

The present invention relates to a liquid detergent composition and, more particularly, to a liquid detergent composition having a high detergency against various contaminants at a low use amount, excellent rinsability, excellent phase stability at a temperature change, and excellent solubility and dispersibility in cold water .

Recently, interest in enriched liquid detergents has been increasing as interest in the environment has increased, and detergents with less environmental load are preferred. The concentrated liquid detergent is considered to be effective in that the container size can be reduced by lowering the concentration of the cleaning component than the conventional liquid detergent, the transportation cost can be reduced, and the amount of garbage after use can be reduced.

In order to solve such a problem, a variety of detergent compositions characterized by low foaming properties have been researched in order to solve such a problem.

Conventionally, liquid detergents containing organic solvents are known. However, the use of an organic solvent increases the cost of the organic solvent, and it causes a problem of solvent extraction, which limits the selection of the perfume and lowers the surfactant ratio which can contribute to the cleaning power.

Accordingly, there is a demand for a liquid detergent composition that does not contain an organic solvent, has excellent phase stability, and has excellent detergency and rinsability.

An object of the present invention is to provide a liquid detergent composition which does not contain an organic solvent and is excellent in phase stability, does not cause phase separation, and has excellent solubility and dispersibility in cold water.

In addition, it is an object of the present invention to provide a concentrated liquid detergent composition having excellent detergency against various contaminants with a small amount of usage and excellent rinsability.

The present invention relates to a liquid detergent composition comprising, based on 100 parts by weight of a liquid detergent composition, a) 40 to 80 parts by weight of at least one nonionic surfactant represented by formula (1); b) 1 to 30 parts by weight of an anionic surfactant; c) 0.1 to 5 parts by weight of a fatty acid salt; And d) from 0.05 to 1 part by weight of the cationic polymer.

[Chemical Formula 1]

R-O- (EO) x-Aw-H

(Wherein R is a linear or branched alkyl or alkenyl group having 9 to 16 carbon atoms, EO is an oxyethylene group, A is an oxypropylene group (PO) or oxybutylene group (BO), x is The average addition mole number of ethylene oxide is 5 to 20, and w is an average addition mole number of propylene oxide or butylene oxide of 0.5 to 10.)

The liquid detergent composition according to the present invention is excellent in phase stability and does not cause phase separation at a temperature change. Even if it is diluted with water, it does not deteriorate solubility due to gelling and is excellent in dispersibility.

Also, it has high cleaning power against various pollution even with a small amount of usage and has excellent rinsing property.

The inventors of the present invention have developed a liquid detergent composition which is excellent in phase stability and detergency even when an organic solvent is not included in the study of the liquid detergent composition and can not be formed into a gel.

The present invention relates to a liquid detergent composition comprising, based on 100 parts by weight of a liquid detergent composition, a) 40 to 80 parts by weight of at least one nonionic surfactant represented by formula (1); b) 1 to 30 parts by weight of an anionic surfactant; c) 0.1 to 5 parts by weight of a fatty acid salt; And d) from 0.05 to 1 part by weight of the cationic polymer.

[Chemical Formula 1]

R-O- (EO) x-Aw-H

(Wherein R is a linear or branched alkyl or alkenyl group having 9 to 16 carbon atoms, EO is an oxyethylene group, A is an oxypropylene group (PO) or oxybutylene group (BO) Wherein the average addition mole number of the oxide is 5 to 20, and w is the average addition mole number of the propylene oxide or the butylene oxide is 0.5 to 10.)

The nonionic surfactant represented by the formula (1) may be a nonionic surfactant represented by the following formula (2).

(2)

R < ^{1 >} -O- (EO) x- (PO) yH

(Wherein R ¹ is a linear or branched alkyl or alkenyl group having 9 to 16 carbon atoms, EO is an oxyethylene group, PO is an oxypropylene group, and x is an average addition mole number of ethylene oxide To 20, and y represents an average addition mole number of propylene oxide of 0.5 to 10.)

The nonionic surfactant represented by the formula (1) may be a nonionic surfactant represented by the following formula (3).

(3)

R ² -O- (EO) x- (BO) z H

(Wherein R ² is a linear or branched alkyl or alkenyl group having 9 to 14 carbon atoms, EO is an oxyethylene group, BO is an oxybutylene group, and x is an average addition mole number of ethylene oxide To 20, and z is an average addition mole number of the butylene oxide ranges from 0.5 to 10.)

The nonionic surfactant may be contained in an amount of 40 to 80 parts by weight, preferably 40 to 60 parts by weight, based on the total composition. Use of a nonionic surfactant within the above range increases the value as a concentrated liquid detergent. If the nonionic surfactant is used in an amount less than 40 parts by weight, the detergency of the liquid detergent may be lowered. When added in an amount exceeding 80 parts by weight, phase stability may deteriorate, resulting in phase separation or opacity during storage for a long period of time.

The anionic surfactant as the component b) of the present invention can improve solubility and detergency. The anionic surfactant may be contained in an amount of 1 to 30 parts by weight, preferably 10 to 25 parts by weight, based on the composition. If it is contained in an amount of less than 1 part by weight, the effect of improving solubility is insignificant, and if it is contained in an amount exceeding 30 parts by weight, the stability may be deteriorated.

The anionic surfactant may be selected from the group consisting of linear or branched alkylbenzenesulfonic acids, alkylsulfuric acids, alkenylsulfuric acids, alpha-sulfone fatty acid esters, alpha olefin sulfonic acids, alkyl ether sulfonic acids, alkyl ether carboxylic acids, alkenyl ether carboxylic acids, An alkyl sulfonate, an alkyl ester sulfonate, an alkyl ether, an alkenyl ether, and salts thereof, or a mixture thereof. More preferably an alkylbenzenesulfonic acid having an alkyl group having 10 to 20 carbon atoms or a salt thereof; A polyoxyethylene alkyl ether sulfonic acid or its salt having an average alkyl group of 10 to 20 carbon atoms and an average ethylene oxide addition molar number of 0.5 to 6; An alkyl or alkenyl ester sulfonic acid or a salt thereof having an alkyl or alkenyl group having 10 to 20 carbon atoms; And alpha olefin sulfonic acid having 10 to 20 carbon atoms or a salt thereof, or a mixture thereof.

Examples of the counter ion of the anionic surfactant include alkali metal ions such as sodium and potassium, alkaline earth metal ions such as magnesium and calcium, alkanolamines such as ethanolamine, diethanolamine and triethanolamine, monomethyldiethanolamine, And alkyl alkanolamines such as an amine, etc., can be used.

The c) fatty acid salt of the present invention not only contributes to the improvement of the detergency, but also reduces the amount of bubbles generated at the initial stage of washing, thereby improving the rinsability. The fatty acid salt may be a form in which a saturated or unsaturated fatty acid having 12 to 18 carbon atoms is neutralized with an alkali metal, an alkaline earth metal, an alkanolamine or an alkylalkanolamine. That is, the fatty acid salt may be an alkali metal ion such as sodium, potassium or the like; Alkaline earth metal ions such as magnesium, calcium (Calcuim); Alkanolamine such as ethanolamine, diethanolamine, and triethanol amine; Or salts having a cationic polarity such as monomethyl diethanolamine and alkyl alkanolamine such as dimethyl ethanolamine can be used.

The fatty acid salt may be contained in an amount of 0.1 to 5 parts by weight, preferably 2 to 4 parts by weight, based on the total composition. If the amount is less than 0.1 part by weight, the effect of increasing the rinsability is insignificant. If the amount is more than 5 parts by weight, the stability of the composition may be deteriorated.

The d) cationic polymer of the present invention may be a copolymer of acrylamide and diallyldimethylammonium chloride or a copolymer of acrylamide, diallyldimethylammonium chloride and acrylic acid. Concretely, it is possible to use alone or a mixture thereof selected from the group consisting of polyquaternium-7 and polyquaternium-39, preferably polyquaternium-7 which is a copolymer of acrylamide and diallyldimethylammonium chloride .

The cationic polymer may be included in an amount of 0.05 to 1 part by weight, preferably 0.05 to 0.5 part by weight based on the total composition. If it is contained in an amount of less than 0.05 part by weight, the effect of increasing the rinsability is insignificant, and if it exceeds 1 part by weight, the decontamination ability against various contaminants may be lowered.

The cationic polymer having a molecular weight of 10 ³ to 10 ⁸ may be used. Preferably 10 ⁵ to 10 ⁶ can be used. If the molecular weight is less than 10 ³ , the effect of increasing the rinsability is insignificant. If the molecular weight exceeds 10 ⁸ , the decontamination ability against various contaminants may be lowered.

The composition of the present invention may further contain an enzyme as component e). The enzyme used in the detergent is not particularly limited. However, when the liquid detergent composition of the present invention is used as a liquid detergent for a garment, it may be a protease, an amylase, a lipase, a cellulase, a mannanase, Pectinase and the like can be used in combination. Specific examples include the following.

As the protease, Protease available from Novozymes, Savinase 16L, Savinase Ultra 16L, Savinase Ultras 16XL, Everlase 16L TypeEX, Everlase Ultra 16L, Esperase 8L, Alcalase 2.5L, Alcalase Ultra 2.5L, Liquanase 2.5L, Liquanase Ultra 2.5L, Liquanase Ultra 2.5XL, Coronase 48L, and protease products Purafect, Purafect Prime and Properase L available from Zenenco.

As the amylase, Termamyl 300L, Termamyl Ultra 200L, Duramyl 300L, stainzyme 12L, stainzyme Plus 12L available from Novoba Incorporated, Purastar ST L and Purastar HP Am available from Zenenco, .

Examples of the lipase include Lipex 100L and Lipolase 100L available from Novoba Incorporated.

Cellulase 5000L, Celluzyme 0.4L, Carzyme 4500L, and cellulase product name Puradux EG L available from Zenenco can be used as Celluase.

Mannanase is Mannaway 4L, available from Novozymes.

Pectinase includes Xpect, which is available from Novozymes.

The content of the component (e) is not particularly limited in terms of storage stability, but is included in an amount of 0.01 to 2 parts by weight, preferably 0.1 to 1.5 parts by weight, for improving the stability of the enzyme while improving the washing performance. If it is used in an amount of less than 0.01 part by weight, a desired washing power can not be obtained, and when it is used in an amount of more than 2 parts by weight, stability between enzymes may be deteriorated.

The composition of the present invention may further contain at least one compound selected from boric acid, borax and borate as f) component. Examples of the borate include sodium borate, potassium borate, ammonium borate, sodium tetraborate, potassium tetraborate and ammonium tetraborate.

The content of the f) component is preferably 0.1 to 3 parts by weight. When the amount is less than 0.1 part by weight, the function of improving the stability of the enzyme is insufficient and the effect thereof can not be expected. When the amount is more than 3 parts by weight, the efficiency is lowered and the phase stability may be adversely affected.

In addition, the liquid detergent composition according to the present invention may be blended with an appropriate amount of additives, if necessary, insofar as the effects of the present invention are not impaired, such as solubilizing agents, preservatives, perfumes, antifoaming agents and dyes. As the solubilizing agent, propylene glycol may be preferably used, but is not limited thereto.

The additive may be included in the composition in an amount of 0.01 to 10 parts by weight, preferably 0.01 to 5 parts by weight, based on the composition. However, the content of the additive may vary according to the object, purpose and method of cleaning the object to be cleaned, Or the contents thereof can be arbitrarily controlled by those skilled in the art within a range not deteriorating the human and environmental stability and storage stability.

The liquid detergent composition of the present invention is preferably alkaline in order to obtain an effective detergency, and the pH of the aqueous solution containing the above-described components is preferably 7.0 to 11.0. Higher pH values above 11 are unsafe for use at home. The pH can be adjusted by adding a suitable alkaline material.

Hereinafter, the present invention will be described in more detail by way of examples and comparative examples, but the technical scope of the present invention is not limited thereto. Unless otherwise stated in the following table, the unit is parts by weight.

≪ Examples and Comparative Examples &

Liquid detergent compositions were prepared by conventional methods known in the art with the compositions of Table 2 in Table 1 below.

ingredient Example One 2 3 4 5 6 7 8 9 10 Nonionic surfactant -1 ¹⁾ 50 - 25 30 20 25 25 25 25 25 Nonionic surfactant -2 ²⁾ - 50 25 35 20 25 25 25 25 25 Anionic surfactant ^{3 )} 20 20 20 One 30 20 10 20 20 20 Fatty acid salt ^{4 )} 3 3 3 3 3 0.1 5 3 3 3 Cationic polymer-1 ⁵⁾ 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.05 One - Cationic polymer-2 ⁶⁾ - - - - - - - - - 0.2 Boric acid One One One One One One One One One One Propylene glycol 2 2 2 2 2 2 2 2 2 2 Additive ^{7 )} 2 2 2 2 2 2 2 2 2 2 water Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Sum 100 100 100 100 100 100 100 100 100 100

1) Nonionic Surfactant-1: Polyoxyethylene propylene alkyl ether in which R is an alkyl group in which C12 to C14 are mixed and A is an oxypropylene group (PO) and the molar sum of EO and PO average is 5.5 to 20

2) Nonionic surfactant-2: Polyoxyethylene butylene alkyl ether wherein R is an alkyl group in which C12 to C14 are mixed, A is oxybutylene group (BO), and EO and BO are an average molar number of addition of 5.5 to 20 (LF 45: Dow chemical)

3) Anionic surfactant: A straight chain alkyl benzene sulfonate (LAS) obtained by neutralizing benzene sulfonic acid having an alkyl group having 10 to 14 carbon atoms (ASCO 96, ACKEMECHT Co., Ltd.) with sodium,

4) Fatty acid salt: Saturated fatty acid salt of 14 carbon atoms neutralized with sodium

5) Cationic polymer 1: polyquaternium 7 (MERQUAT 550, Nalco company), molecular weight 1.6 × 10 ⁶ , cationic polymer having acrylamide and DADMAC (diallyldimethylammonium chloride) as monomers

6) Cationic polymer-2: polyquaternium 39 (MERQUAT 3330, Nalco company), molecular weight 1.6 x 10 ⁶ , cationic polymer having acrylic acid, acrylamide and DADMAC as monomers.

7) Additives: a mixture of preservatives, coloring enzymes and fragrances

ingredient Comparative Example One 2 3 4 5 6 7 8 9 10 Nonionic surfactant -1 ¹⁾ - - 38 - 40 50 50 25 25 35 Nonionic surfactant-3 ⁸⁾ 50 - - 25 - - - 25 - 35 Nonionic surfactant - ^{9 9)} - 50 - 25 - - - - 25 - Anionic surfactant ^{3 )} 20 20 35 20 20 20 20 20 20 - Fatty acid salt ^{4 )} 3 3 3 3 6 - 3 3 3 3 Cationic polymer-1 ⁵⁾ 0.2 0.2 0.2 0.2 0.2 0.2 1.5 0.2 - 0.2 Boric acid One One One One One One One One One One Propylene glycol 2 2 2 2 2 2 2 2 2 2 Additive ^{7 )} 2 2 2 2 2 2 2 2 2 2 water Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Sum 100 100 100 100 100 100 100 100 100 100

8) Nonionic surfactant-3: Softanol having an alkyl group of 12 to 14 carbon atoms mixed and having an EO sum of 9 moles.

9) Nonionic Surfactant-4: Polyoxyethylene alkyl ether (AEO) having a mixed alkyl group having 9 to 14 carbon atoms and a molar sum of EO addition of 7 to 15 moles,

The stability of the liquid detergent compositions prepared according to the above Examples and Comparative Examples against washing power, phase stability, rinsing ability and solubility was measured as follows.

<Experimental Example>

1) Evaluation of cleaning power

The detergency evaluation was carried out by using a stirring and mixing type cleaning power tester (Terg-O-tometer, United States Testing Co., Inc.), which is mainly used for a laboratory. The washing rate was measured at 25 ° C with a rotating RPM of 120, and the amount of the sample was 1 g of water in 1 L of water. The washing time was 10 minutes, and the rinsing was carried out twice for 3 minutes each.

C10 (Center For Test Materials) BV and K10D (wfk Testgewebe GmbH) were used for the measurement. Each contaminated cloth was made of cotton, wool, protein and sebum contaminated cloth and cut into 8 × 8cm in size.

Before and after washing, the degree of whiteness was measured with a colorimeter (colorimeter, Japan testing Co., INC.), And the cleaning power calculated according to the following formula was evaluated according to the evaluation criteria shown in Table 3, The results are shown in Tables 4 and 5.

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

A: White whiteness

B: Pollution degree before washing

C: Pollution whiteness after washing

Criteria for cleaning power
(C10; cotton) ◎: very good (cleaning power 45% or more) Good: Excellent (cleaning power 40 to 45%) △: Normal (cleaning power 35 to 40%) X: poor (less than 35%)
Criteria for cleaning power
(K10D; cotton) ◎: very good (cleaning power 45% or more) Good: Excellent (cleaning power 40 to 45%) △: Normal (cleaning power 35 to 40%) X: poor (less than 35%)

Example One 2 3 4 5 6 7 8 9 10 C12; if ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ K10D; if ◎ ◎ ◎ ◎ ○ ◎ ◎ ◎ △ ○

Comparative Example One 2 3 4 5 6 7 8 9 10 C12; if ◎ ◎ ○ ◎ ◎ ◎ ◎ ◎ ◎ ◎ K10D; if ◎ ◎ ○ ◎ △ ◎ X ◎ ○ ○

2) Phase stability evaluation

The stability of the liquid detergent compositions prepared according to the above Examples and Comparative Examples was evaluated by the following method after changing with time according to the temperature.

Phase stability ◎: Very good (no phase separation phenomenon, excellent fluidity) ○: Excellent (occurrence of fine phase separation, fluidity is normal) △: Normal (severe suspension phenomenon, low fluidity) X: poor (phase separation, no fluidity)

Example One 2 3 4 5 6 7 8 9 10 Phase stability ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎

Comparative Example One 2 3 4 5 6 7 8 9 10 Phase stability ○ ○ X ◎ X ◎ X ○ ◎ ◎

3) Evaluation of rinsability

The rinseability evaluation was carried out using a front-load washing machine (LG Electronic) used in ordinary households. The washing temperature was adjusted to 40 ° C, washed for 30 minutes, and rinsed twice for 5 minutes each. Dehydration of the laundry was carried out at 800 rpm for 5 minutes.

20 ml of each composition of Examples 1 to 10 and Comparative Examples 1 to 10 were used for the measurement, and 1.2 kg of cotton towels were used for the rinsability measurement.

The rinsability was evaluated according to the evaluation criteria shown in Table 9 on the basis of the amount of bubbles generated in the rinsing step by marking the scale from 0 to 25 in the transparent window of the washing machine, and the results are shown in Tables 10 and 11.

Rinseability criteria ◎: Very good (bubble amount is less than display scale 1) ○: Excellent (the amount of bubbles generated is indicated by scale 1 to 3) △: Normal (bubble generation amount is indicated by scale 3 to 5) X: Defective (bubble generation amount exceeding display scale 5)

Example One 2 3 4 5 6 7 8 9 10 Rinseability ◎ ◎ △ ◎ ◎ ◎ ◎ ◎ ◎ ◎

Comparative Example One 2 3 4 5 6 7 8 9 10 Rinseability ○ ○ X ◎ X X X ○ △ ◎

4) Solubility evaluation

The solubility was evaluated by using a liquid detergent measuring cup at the inlet of a drum washing machine (Front-Load Washing Machine, LG Electronic). 1.5 times of the standard usage was weighed, and water of constant temperature 10 ° C was filled twice in the measuring cup.

As the samples used for the measurement, 25 g each of the compositions of Examples 1 to 10 and Comparative Examples 1 to 10 were used.

The solubility of the detergent in the measuring cup was determined according to the criteria shown in Table 12. The results are shown in Tables 13 and 14.

Solubility determination criteria ◎: Very good (dissolve immediately after one injection) ○: Excellent (dissolves immediately after the second injection) △: Normal (weakly gelled in the measuring cup, but drained) X: Poor (gelled in the measuring cup and not drained)

Example One 2 3 4 5 6 7 8 9 10 Solubility ○ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎

Comparative Example One 2 3 4 5 6 7 8 9 10 Solubility X X X X X ○ ○ △ △ △

As described above, the liquid detergent composition of the present invention is excellent in cleaning power against various pollution and stability, and is excellent in rinsing property and solubility in a drum washing machine.

Claims (9)

Based on 100 parts by weight of the liquid detergent composition
a) 40 to 80 parts by weight of at least one nonionic surfactant represented by the general formula (3);
b) 1 to 30 parts by weight of an anionic surfactant;
c) 0.1 to 5 parts by weight of a fatty acid salt; And
d) 0.05 to 1 part by weight of cationic polymer
&Lt; / RTI &gt;
(3)
R ² -O- (EO) x- (BO) z H
(Wherein R ² is a linear or branched alkyl or alkenyl group having 9 to 14 carbon atoms, EO is an oxyethylene group, BO is an oxybutylene group, and x is an average addition mole number of ethylene oxide To 20, and z is an average addition mole number of the butylene oxide ranges from 0.5 to 10.) delete delete The method according to claim 1,
The anionic surfactant may be selected from the group consisting of linear or branched alkylbenzenesulfonic acids, alkylsulfuric acid, alkenylsulfuric acid, alpha-sulfone fatty acid ester, alpha olefin sulfonic acid, alkyl ether sulfonic acid, alkyl ether carboxylic acid, alkenyl ether carboxylic acid, Wherein the liquid detergent composition comprises at least one member selected from the group consisting of a succinic acid alkyl ester, an acylamino alkanesulfonic acid, an alkyl ester sulfonic acid, an alkenyl ester sulfonic acid, an alkyl ether, an alkenyl ether and salts thereof. The method according to claim 1,
Wherein the fatty acid salt is at least one selected from the group consisting of alkali metal salts, alkaline earth metal salts, alkanolamine salts and alkylalkanolamine salts of saturated or unsaturated fatty acids having 12 to 18 carbon atoms. The method according to claim 1,
Wherein said cationic polymer is a copolymer of acrylamide and diallyldimethylammonium chloride or a copolymer of acrylamide, diallyldimethylammonium chloride and acrylic acid. The method according to claim 1,
e) an enzyme. &lt; / RTI &gt; 8. The method of claim 7,
The enzyme may be at least one selected from the group consisting of Protease, Amylase, Lipase, Celluase, Mannanase, and Pectinase. Lt; / RTI &gt; The method according to claim 1,
f) at least one compound selected from the group consisting of boric acid, borax and borate.