JP6511257B2 - Thixotropic agent - Google Patents

Description

  The present invention relates to a thixotropic agent for liquid detergent compositions.

  In recent years, consumers have sought not only cleaning performance but also fabric care performance such as softness, or residual odor performance, to liquid detergent compositions. It is known to incorporate particles encapsulating fabric care compounds, perfume compositions and the like into liquid detergent compositions for clothing. It is known that the liquid detergent composition for clothing may be separated when the capsule particles containing those functional bases are suspended. While thickening of the composition is known to be useful to inhibit separation, thickening of the composition makes it difficult for the consumer to handle the cleaning composition. As such, it is known that external structuring systems that provide suitable rheological properties, in particular thixotropic properties, are useful.

  Patent Document 1 describes the preparation of a filiform structuring system with a hydroxyl group-containing structurant, a nonionic surfactant emulsifier, a liquid carrier and a low loading of anionic surfactant.

  In Patent Document 2, the formation of spherical crystals is suppressed by using an anionic surfactant hydroxyl group-containing structuring agent, a liquid carrier, and converting the neutralization salt of an anionic emulsifier from an inorganic ion to an alkanolamine, thereby forming a filamentous thread Techniques are disclosed to improve the rheological behavior of structured systems.

Japanese Patent Application Publication No. 2005-534800 Japanese Patent Application Publication No. 2013-503949

  The invention described in Patent Document 1 does not specify the effects of the structured system having a nonionic surfactant content of 9% by mass or less, and the inventions described in Patent Document 1 and Patent Document 2 Since the viscosity at the time of high shear of the structured system before blending into the liquid detergent composition has a high viscosity, there is a concern that the handling property has a problem and the equipment load is large.

  An object of the present invention is to provide a thixotropic agent for liquid detergent compositions having a low viscosity at high shear, and to provide a method for producing the same. Another object of the present invention is to provide a liquid detergent composition containing a thixotropic agent, which has a high viscosity at low shear and is easy to handle.

  That is, in the present invention, 1 mass% or more and 5 mass% or less of fatty acid glyceride having a hydroxyl group in an aliphatic acyl group as component (A), and 0 mass% or more of nonionic surfactant as component (B) 9 Mass% or less, 0 mass% or more of anionic surfactant as component (C), and water are contained, and the total content of the content of component (B) and the content of component (C) is 0 mass %, 9% by mass or less, and the mass ratio of the content of the component (C) to the content of the component (B) [(C) component / (B) component] is 0 or more and less than 0.25. The present invention relates to a thixotropic agent for liquid detergent compositions, which comprises spherical crystal particles containing the component (A) in the water-containing phase.

  Moreover, this invention mixes the said (A) component, (B) component, (C) component, and water above melting | fusing point of (A) component, and the process (1) of obtaining an emulsion liquid, and the said emulsion liquid The present invention relates to a method for producing a thixotropic agent for a liquid detergent composition, including the step (2) of cooling to 5 ° C. or more and 40 ° C. or less.

  Furthermore, the present invention relates to a liquid detergent composition comprising the liquid composition containing the thixotropic agent and a surfactant.

  The thixotropic agent of the present invention imparts rheological properties to the liquid detergent composition and maintains the viscosity at low shear of the liquid detergent composition high, while the viscosity at high shear of the thixotropic agent is It is possible to keep it low.

  The property of the conventional thixotropic agent is only emphasized that the viscosity at low shear of the liquid detergent composition can be increased, and the thixotropic agent is a composition having a thread-like structure with high viscosity at high shear Met. However, in the present invention, it contains spherical crystal particles capable of simultaneously satisfying the effect of increasing the viscosity at low shear of the liquid detergent composition and the effect of suppressing the viscosity at high shear of the thixotropic agent. And a liquid detergent composition comprising the thixotropic agent and the thixotropic agent.

  Although the mechanism of expression of the effects of the present invention is not clear, it is presumed as follows.

  According to the mechanism of the present invention, the viscosity of the thixotropic agent at high shear can be suppressed to a low level by the spheroidization of the crystals of the component (A) by the (B) component present in the thixotropic agent. By suppressing the secondary particle formation of the crystals of component (A) by the component (B) present in the thixotropic agent, the viscosity at low shear of the liquid detergent composition containing the thixotropic agent can be increased. Furthermore, by decreasing the compounding amount of the component (B), viscosity reduction at high shear of the thixotropic agent and viscosity at low shear of the liquid detergent composition containing the thixotropic agent are increased. It is estimated that it can be done.

The thixotropic agent according to the present invention contains fatty acid glyceride having a hydroxyl group in an aliphatic acyl group as component (A), nonionic surfactant as component (B), and water, and optionally component (C). As an anionic surfactant.
Hereinafter, each component contained in the thixotropic agent for the liquid detergent composition of the present invention will be described.

<(A) component>
Component (A) is a fatty acid glyceride having a hydroxyl group in an aliphatic acyl group. The component (A) is preferably a fatty acid glyceride having an aliphatic acyl group having a carbon number of 14 or more and 18 or less, in which one or more of hydrogen atoms are substituted with a hydroxyl group, from the viewpoint of high effect of imparting thixotropy. By having a hydroxyl group in the aliphatic acyl group, the intermolecular hydrogen bond between the components (A) promotes the crystal growth of the component (A). In addition, fatty acid glycerides having a hydroxyl group in the aliphatic acyl group can have at most three aliphatic acyl groups having a hydroxyl group in the aliphatic acyl group. The average number of acyl groups of the fatty acid glyceride having a hydroxyl group in the aliphatic acyl group is 1 or more, preferably 2 or more, more preferably 2.5 or more from the point of promoting crystal formation. Most preferably 3 from the point of storage stability of the crystal. Further, the iodine value of the fatty acid glyceride having a hydroxyl group in the aliphatic acyl group is 5 or less in that the viscosity at low shear of the liquid detergent composition is further increased by generating more uniform crystals. 4 or less is more preferable, 3 or less is more preferable, and 2 or less is more preferable. The iodine value can be determined according to the method described in JIS K 0070: 1992 (Test method for acid value, saponification value, ester value, iodine value, hydroxyl value and unsaponifiable matter of chemical products). As the component (A), it is preferable to use hydrogenated castor oil or hydrogenated castor oil.
As the component (A), at least one type may be used, and two or more types can be used in combination.

  The content of the component (A) in the thixotropic agent of the present invention is 1% by mass or more and 5% by mass or less. 2 mass% or more is preferable from a viewpoint which can raise the viscosity at the time of low shear of the liquid detergent composition containing a thixotropic property imparting agent, 2.5 mass% or more is more preferable. It is preferably 4% by mass or less, and more preferably 3.5% by mass or less from the viewpoint that the viscosity at high shear of the thixotropic agent can be lowered.

<(B) component>
The component (B) is a nonionic surfactant. The nonionic surfactant which is the component (B) preferably has an HLB of 11.5 or more and 12.5 or less according to the Griffin method. 11.9 or more and 12.3 or less are preferable and, as for HLB, the one near 12.0 is more preferable from the point which can make the viscosity at the time of high shear of a thixotropic property imparting agent low. The HLB is preferably 11.8 or more and 12.3 or less, and more preferably close to 12.0 from the viewpoint that the viscosity at low shear of the liquid detergent composition can be increased. The HLB is preferably 11.5 or more and 12.5 or less from the point that it is considered that the affinity between the (A) component and the (B) component is important in order to stably disperse the crystal of the (A) component, 11.7 or more and 12.2 or less are more preferable. As nonionic surfactants, polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, alkyl polyglycoside, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene fatty acid ester, polyoxyethylene / polyoxypropylene block polymer, alkyl glyceryl ether Can be mentioned. Among them, from the viewpoint of the dispersibility of the component (A) in water, the component (B) is preferably a polyoxyalkylene alkyl ether containing a polyoxyethylene group or a polyoxyalkylene alkenyl ether.

Furthermore, as the component (B), a monohydric alcohol having a linear or branched alkyl group having 8 to 20 carbon atoms and having 1 to 20 carbon atoms, 1 mol of the alcohol, and 2 to 9 mol of ethylene oxide Among condensation products, those having an HLB of 11.5 or more and 12.5 or less according to the Griffin method are preferable. The carbon number of the alkyl group is preferably 8 or more, more preferably 10 or more, still more preferably 12 or more, and preferably 18 or less, more preferably 16 or less, from the viewpoint of dispersibility of the component (A). 14 or less is more preferable. In the case of using a plurality of compounds as the component (B), the HLB weight average HLB by the Griffin method is used.
As the component (B), at least one type may be used, and two or more types can be used in combination.

  The content of the component (B) in the thixotropic agent of the present invention is more than 0% by mass and 9% by mass or less. 2.5 mass% or more is preferable at the point which suppresses secondary particle formation of the crystal | crystallization of (A) component, 3 mass% or more is more preferable, and 4 mass% or more is still more preferable. 8 mass% or less is preferable at the point which can make the viscosity at the time of high shear of the thixotropic property imparting agent itself low, 7 mass% or less is more preferable, and 6 mass% or less is still more preferable.

<(C) Component: Anionic Surfactant>
The component (C) is an anionic surfactant. The anionic surfactant is preferably an anionic surfactant having an aliphatic alkyl group having a carbon number of 8 or more and 20 or less and a sulfonate group in that the viscosity at low shear of the liquid detergent composition can be further increased. . Specific examples of the anionic surfactant having an aliphatic alkyl group having a carbon number of 8 or more and 20 or less and a sulfonate group are selected from alkyl benzene sulfonates, alkyl ester sulfonates, and primary or secondary alkane sulfonates. One or more compounds may be mentioned. The carbon number of the alkyl group is preferably 8 or more and 18 or less from the viewpoint of the dispersion stability of the component (A) in water. The carbon number of the alkyl group is preferably 10 or more and 16 or less from the viewpoint of solubility at the time of blending. An anionic surfactant containing an alkyl benzene sulfonate having an aliphatic alkyl group having a carbon number of 10 or more and 16 or less is preferable from the viewpoint that the viscosity at low shear of the liquid detergent composition can be increased.

Examples of the salt of the component (C) include alkanolamine salts and alkali metal salts having a total carbon number of 2 or more and 6 or less. Specific examples of the alkanolamine having 2 to 6 carbon atoms in total include monoethanolamine, diethanolamine and triethanolamine. A sodium salt is mentioned as an example of an alkali metal salt.
As the component (C), at least one type may be used, and two or more types can be used in combination.

  When an anionic surfactant having an aliphatic alkyl group having 8 or more carbon atoms and 20 or less carbon atoms and a sulfonate group is employed as the component (C), the aliphatic carbon having 8 or more carbon atoms and 20 or less carbon atoms in the component (C) 60 mass% or more is preferable, as for content of the anionic surfactant which has an alkyl group and a sulfonate group, 70 mass% or more is more preferable, 80 mass% or more is more preferable, 90 mass% or more is still more preferable, 95 mass% or more is the most preferable.

  The content of the component (C) in the thixotropic agent of the present invention is 0% by mass or more. It is preferably 1.8% by mass or less, more preferably 1% by mass or less, that is, 0% by mass, from the viewpoint of suppressing the formation of crystals of shapes other than spherical crystal particles in the thixotropic agent. % Is more preferred.

  The total content of the content of the component (B) in the thixotropic agent and the content of the component (C) is more than 0% by mass and 9% by mass or less. 1 mass% or more is preferable, 1.5 mass% or more is more preferable, and 2 mass% or more is more preferable from the point which can raise the viscosity at the time of low shear of the liquid detergent composition containing a thixotropic property imparting agent. It is preferably 8% by mass or less, more preferably 7% by mass or less, and still more preferably 6% by mass or less from the viewpoint that the viscosity at high shear of the thixotropic agent can be lowered.

  Moreover, mass ratio [(C) component / (B) component] of content of (C) component and content of (B) component is 0 or more and less than 0.25. The content of the component (C) and the component (B) from the point that the viscosity at low shear of the liquid / liquid detergent composition can be further increased by suppressing the crystal formation other than the spherical crystal particles in the thixotropic agent. 0.20 or less is preferable, as for mass ratio [(C) component / (B) component] with content of a component, 0.15 or less is more preferable, 0.10 or less is still more preferable, 0.05 or less is especially preferable. , 0 is most preferred.

  Also, from the point of suppression of the secondary particles of spherical crystal particles in the thixotropic agent, the mass ratio of the content of the component (A) to the total content of the components (B) and (C) { The component (A) / [component (B) + component (C)] is preferably 1/9 or more, more preferably 1/3 or more, and in that the viscosity at high shear of the thixotropic agent can be lowered, 5 / 2.5 or less is preferable and 3 / 2.5 or less is more preferable.

<Water>
There is no particular limitation on water, but tap water, distilled water and water selected from ion exchange water can be used. The water content is the balance of the total amount of (A) component, (B) component, (C) component and the following optional components, and is 80% by mass or more, 85% by mass or more, and 98% by mass or less, 95% by mass % Or less can be mentioned.

<Optional ingredient: Organic solvent>
The thixotropic agent of the present invention may contain an organic solvent as an optional component. Preferred organic solvents include alcohols, glycerols, glycols, polyalkylene glycols, and mixtures thereof because they do not separate in the formulation. The content of the organic solvent in the thixotropic agent is preferably 1% by mass or more, more preferably 2% by mass or more, from the viewpoint of the effect of reducing the viscosity of the thixotropic agent. The content of the organic solvent inhibits the formation of dispersed spherical crystal particles and further promotes the formation of secondary particles, thereby inhibiting the effect of increasing the viscosity at low shear of the liquid detergent composition. More preferably, it is low, 5% by mass or less is preferable, and 4% by mass or less is more preferable.

<Optional ingredients: Other>
To the thixotropic agent of the present invention, as other components, preservatives such as 1,2-benzisothiazolin-3-one can be appropriately blended.

<Thixotropic agent)
The thixotropic agent of the present invention contains spherical crystal particles containing the component (A). The spherical crystal particles are stably dispersed in the form of spheres by the component (B) and optionally the component (C) in the phase in which the crystals of the component (A) contain water. The spherical crystal particles may not be true spheres, but may be elliptical. In the case of an elliptical shape, the ratio of the major axis length to the minor axis length (major axis length) / (minor axis length) includes shapes of 1/1 or more and 3/1 or less. . The average diameter of the spherical crystal particles is preferably 50 μm or less, more preferably 20 μm or less, still more preferably 10 μm or less, and preferably at a point that the effect of increasing the viscosity at low shear of the liquid detergent composition is higher. The size is preferably 1 μm or more, more preferably 2 μm or more.
The average diameter of the above-mentioned spherical crystal particles is the diameter of the spherical crystal particles observed with a digital microscope (VH-250R, manufactured by Keyence Co., Ltd.) by dropping a thixotropic agent onto the slide glass and covering the glass cover. Measured using a digital microscope scale, it can be obtained by averaging the diameters of 20 spherical crystal particles. When the spherical crystal particle is an ellipse, the area of the ellipse can be determined, and the diameter when the ellipse is regarded as a circle can be calculated and determined.

The viscosity at high shear of the thixotropic agent is determined using a TVB-10M viscometer (M type, manufactured by Toki Sangyo Co., Ltd.) compatible with the B viscometer described in JIS Z 8803: 2011. The viscosity at a temperature of 20 ° C. after 1 minute when measured at a rotor rotational speed of 60 rpm is preferably 1000 mPa · s or less. The rotor used at the time of measurement is No. 1 of the M type rotor set. 1 to No. Use 4 Measurement is rotor No. If an upward arrow is displayed next to the value displayed on the display unit, the rotor No. 1 is used. Sequentially raise and measure again. When the value is displayed, calculate the viscosity based on the value.
The viscosity at a temperature of 20 ° C after 1 minute when measured at a rotor rotational speed of 60 rpm using a TVB-10M viscometer is 900 mPa · s or less from the point of securing a good handling property of the thixotropic agent. Preferably, 800 mP mPa · s or less is more preferable.
In the present invention, the viscosity at high shear is the viscosity measured at a rotor rotational speed of 60 rpm.

<Method of producing thixotropic agent>
The process for producing the thixotropic agent according to the present invention comprises the steps of: mixing the component (A), the component (B), the component (C) and the water above the melting point of the component (A) to obtain an emulsion (1) And a step (2) of cooling the emulsion to 5 ° C. or more and 40 ° C. or less.

<Step (1)>
Step (1) of the present invention is a step of mixing the above-mentioned component (A), component (B), component (C) and water at a temperature above the melting point of component (A) to obtain an emulsion. In order to promote the crystallization of spherical crystal particles containing component (A) in the droplets of the emulsion in the next step 2, a temperature higher by 1 ° C. or more than the melting point of component (A) is preferable, and 3 ° C. or more Temperatures which are preferably higher than 5 ° C., more preferably higher than 7 ° C. are even more preferable. The upper limit value of the temperature is, for example, 95 ° C. or less and 90 ° C. or less from the viewpoint of reduction of the heat energy applied during manufacturing.

<Step (2)>
The process (2) of this invention is a process (2) which cools the said emulsion to 5 degreeC or more and 40 degrees C or less. 20 degreeC or more is preferable and 30 degreeC or more is more preferable than the point which can make the viscosity at the time of high shear of the thixotropy imparting agent obtained by process (2) lower. From the point of stability of the spherical crystal particles, 38 ° C. or less is preferable.

  In the step (2), the cooling rate is preferably 0.2 ° C./min or more and 5 ° C./min or less. It is preferably 0.5 ° C./min or more from the viewpoint that the viscosity at low shear of a liquid detergent composition containing a thixotropic agent can be further increased by suppressing the enlargement of spherical crystal particles. 7 ° C./min or more is more preferable. 2 ° C./min or less is preferable from the point that the viscosity at low shear of a liquid detergent composition containing a thixotropic agent can be further increased by suppressing the secondary particle formation of spherical crystal particles, and 1.5 or less. C./min or less is more preferable. Cooling can be performed by bringing the emulsion and the refrigerant into contact with each other.

<Liquid composition>
The liquid composition of the present invention contains a surfactant. As surfactant of a liquid composition, 1 or more types chosen from anionic surfactant, cationic surfactant, nonionic surfactant, and amphoteric surfactant are mentioned. As surfactant of a liquid composition, surfactant containing 1 or more types chosen from anionic surfactant and nonionic surfactant is preferable.

As an anionic surfactant, alkyl benzene sulfonic acid or its salt, α-olefin sulfonic acid or its salt, alkyl sulfuric acid ester or its salt, polyoxyalkylene alkyl ether sulfuric acid or its salt, α-sulfo fatty acid ester or its salt And fatty acids or salts thereof. Among them, alkyl benzene sulfonic acid or a salt thereof, alkyl sulfuric acid ester or a salt thereof, polyoxyalkylene alkyl ether sulfuric acid or a salt thereof is preferable. Here, the carbon number of the alkyl group in the anionic surfactant is preferably 8 or more, more preferably 10 or more, more preferably 12 or more, and preferably 18 or less, more preferably 16 or less, More preferably, it is 14 or less. Also, the oxyalkylene group is preferably an ethyleneoxy group. The average addition mole number is preferably 0.5 or more, more preferably 1 or more, and preferably 10 or less, more preferably 5 or less. The salt of the anionic surfactant is preferably an alkali metal salt.

  Examples of nonionic surfactants include polyoxyalkylene alkyl ethers, alkyl polyglycosides, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene fatty acid esters, polyoxyethylene / polyoxypropylene block polymers, alkyl glyceryl ethers and the like. Among them, polyoxyalkylene alkyl ether is preferable. The carbon number of the alkyl group in the nonionic surfactant is 10 or more, preferably 12 or more, and 18 or less, preferably 14 or less. As the alkyleneoxy group, an ethyleneoxy group is preferable. The average addition mole number is 1 or more, preferably 2 or more, and 20 or less, preferably 15 or less, more preferably 10 or less.

  Examples of cationic surfactants include di-long-chain alkyl quaternary ammonium salts, mono-long-chain alkyl quaternary ammonium salts, di-long-chain alkyl imidazolinamide quaternary salts, trialkyl benzyl ammonium salts, alkyl imidazolates. And salts thereof, N-alkyl-polyoxyalkylene trimethyl ammonium salts and the like. The carbon number of the alkyl group in the cationic surfactant is preferably 10 or more and 18 or less.

  The amphoteric surfactant includes alkyl carboxybetaine, amidopropyl betaine, hydroxysulfobetaine, amide amino acid salt, alkylaminodicarboxylic acid, alkyldiaminoethylglycine, amine oxide and the like. The carbon number of the alkyl group in the amphoteric surfactant is preferably 10 or more and 18 or less.

  The content of the surfactant in the liquid composition is preferably 5% by mass or more, more preferably 10% by mass or more, and still more preferably 15% by mass or more in the liquid composition of the present invention. And it is 50 mass% or less, More preferably, it is 40 mass% or less, More preferably, it is 30 mass% or less, More preferably, it is 25 mass% or less.

  When an anionic surfactant or nonionic surfactant is employed in the liquid composition, the total content of the anionic surfactant or nonionic surfactant is preferably in the liquid composition of the present invention, It is 5% by mass or more, more preferably 10% by mass or more, and further preferably 15% by mass or more. Further, the total content of the anionic surfactant or the nonionic surfactant is preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 30% by mass or less, in the liquid composition of the present invention. Still more preferably, it is 25% by mass or less.

  In the liquid composition of the present invention, as other components, water-soluble neutral inorganic salts, water-soluble polymers, enzymes, anti-recontamination agents, reducing agents (such as sulfites), foam inhibitors (such as silicones), bleaching agents Bleach activators, fluorescent dyes, color particles, perfumes, colorants (pigments and dyes) and the like can be appropriately blended.

<Liquid cleaner composition>
The liquid detergent composition of the present invention contains a liquid composition containing the thixotropic agent of the present invention and a surfactant.

  The liquid detergent composition is obtained by mixing the thixotropic agent and the liquid composition. The mixing is preferably performed at a temperature of 5 ° C. or more and 40 ° C. or less. The mixing is preferably performed at 25 ° C. or higher, more preferably 30 ° C. or higher, from the viewpoint of facilitating uniform dispersion of the thixotropic agent in the liquid composition. From the viewpoint of the stability of the spherical crystal particles containing the component (A), the mixing is more preferably performed at 40 ° C. or less.

The liquid detergent composition was stirred for 1 minute at a rotor rotational speed of 60 rpm using a TVB-10M viscometer (M type, manufactured by Toki Sangyo Co., Ltd.) compatible with a B-type viscometer and data 1 The viscosity is preferably 300 mPa · s or more at a temperature of 20 ° C. after 1 minute when it is left to stand for a minute and measured at a rotor rotational speed of 6 rpm. From the point of dispersion stability of the particles in the liquid cleaning composition, after stirring for 1 minute at a rotor rotational speed of 60 rpm using a TVB-10M viscometer, it is allowed to stand for 1 minute and measured at a rotor rotational speed of 6 rpm The viscosity at a temperature of 20 ° C. after 1 minute is preferably 320 mPa · s or more, and more preferably 400 mPa · s or more. The rotor used at the time of measurement is No. 1 of the M type rotor set. 1 to No. Use 4 Measurement is rotor No. If an upward arrow is displayed next to the value displayed on the display unit, the rotor No. 1 is used. Sequentially and measure. When the value is displayed, calculate the viscosity based on the value.
The viscosity at low shear in the present invention is the viscosity calculated by the method of measuring the viscosity of the liquid detergent composition described above.

  The content of the thixotropic agent in the liquid detergent composition is, after stirring for 1 minute at a rotor rotational speed of 60 rpm, leaving at rest for 1 minute and measuring at a rotor rotational speed of 6 rpm at a temperature of 20 ° C. after 1 minute. The viscosity of the liquid detergent composition can be appropriately adjusted to be a liquid detergent composition having a viscosity of 300 mPa · s or more. Specifically, the content of the thixotropic agent in the liquid detergent composition is preferably 20% by mass or less, more preferably 10% by mass or less, from the viewpoint of ease of blending into the liquid detergent composition. .

  Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited by these implementations.

<Raw material>
The compounds and liquid compositions used in the following Examples or Comparative Examples are shown below.
<(A) component>
Hydrogenated castor oil (iodine value _1.5g-I 2 / 100g)
<(B) component>
The compound which adjusted HLB by the Griffin method to 11.5-12.5 by changing suitably the average added mole number of the oxyethylene group added to the lauryl alcohol to 4.8-6. Calculation of HLB by the Griffin method was calculated based on the average added mole number of oxyethylene group.
<(C) component>
Sodium lauryl benzene sulfonate <water>
Ion-exchanged water <liquid composition>
Linear alkyl benzene sulfonic acid sodium salt 16 mass%
Polyoxyethylene (10) lauryl ether 11% by mass
[The number in () is the average added mole number of oxyethylene group]
Lauric acid 0.8% by mass
Dimethylaminopropyl stearic acid amide 3% by mass
Diethylene glycol butyl ether 3 mass%
Ethanol 3% by mass
Citric acid 0.8% by mass
p-toluenesulfonic acid 3% by mass
Sodium hydroxide 3 mass%
Proxel BDN (preservative) 0.05% by mass
Sodium sulfite 0.05 mass%
Water 56.3% by mass

Example 1
<Preparation of a thixotropic agent>
In a glass beaker of 100 mL capacity, 47.5 g (92.2 mass%) of ion exchanged water, 2.5 g (4.9 mass%) of polyoxyethylene lauryl ether (HLB 11.5), 1.5 g (2 of hardened castor oil) 9 mass%) was added. The stirrer was 1 cm in diameter and 3.5 cm in length. The beaker was heated in a water bath so that the temperature of the contents was in the temperature range of 90 ° C to 95 ° C. Next, in a temperature range of 90 ° C. to 95 ° C., cooling was performed at a cooling rate of 1.0 ° C./min to a room temperature of 25 ° C. with a 6-series stirrer (As One RS-60D) at 600 rpm. A thixotropic agent was obtained.

<Preparation of Liquid Detergent Composition>
In a 100 mL glass beaker, 90 g of the liquid composition at 25 ° C. and 10 g of the thixotropy imparting agent at 35 ° C. were loaded, and a rod-shaped stirrer piece made of Teflon (registered trademark) having a diameter of 2 cm was used. The mixture was stirred for a minute to prepare a liquid detergent composition. The results are shown in Table 1.

Examples 2 to 8
The same operation as Example 1 was performed except having changed the nonionic surfactant which is (B) ingredient into the compound (HLB11.8-12.5) of Table 1. The results are shown in Table 1.

Examples 9 to 12 and Comparative Examples 1 to 3
Example 1 was followed except that the amount of each component was changed to obtain the composition described in Table 1. When an anionic surfactant is used as the component (C), the method of preparing the thixotropic agent of Example 1 is carried out except that it is introduced into the beaker together with the nonionic surfactant which is the component (B). The same procedure as in Example 1 was followed. The results are shown in Table 1.

<Evaluation method>
<Method of measuring viscosity of thixotropic agent>
The viscosity beaker containing the thixotropic agent was placed in a thermostat to adjust the temperature of the thixotropic agent to 20 ± 1 ° C. In the TVB-10M viscometer, no. 1 was set, and the viscosity after 1 minute was measured at a rotational speed of 60 rpm. If an upward arrow is displayed next to the value displayed on the display unit, the rotor No. 1 is displayed. Sequentially and measure. When the value was displayed, the viscosity was calculated based on the value. The results are shown in Tables 1 to 3. A viscosity of 1000 mPa · s or less is acceptable, and the lower the value, the better.

<Method of Measuring Viscosity of Liquid Detergent Composition>
The viscosity beaker containing the liquid detergent composition was placed in a thermostat to adjust the temperature of the liquid detergent composition to 20 ± 1 ° C. In the TVB-10M viscometer, no. After setting 1 and operating at a rotational speed of 60 rpm for 1 minute, it was allowed to stand for 1 minute, and then its viscosity was measured after operating at 6 rpm for 1 minute. If an upward arrow is displayed next to the value displayed on the display unit, the rotor No. 1 is displayed. Sequentially and measure. When the value was displayed, the viscosity was calculated based on the value. The results are shown in Table 1. A viscosity of 300 mPa · s or more is a pass, and the higher the value, the better.

Claims (7)

1% by mass or more and 5% by mass or less of fatty acid glycerides having a hydroxyl group in an aliphatic acyl group as component (A), more than 0% by mass, and 9% by mass or less of nonionic surfactants as component (B) ) Containing 0% by mass or more of an anionic surfactant as a component, and water
The fatty acid glyceride having a hydroxyl group in the aliphatic acyl group is hydrogenated castor oil and / or hydrogenated castor oil,
The nonionic surfactant has an HLB of 11.5 or more and 12.5 or less according to the Griffin method,
The total content of the content of the component (B) and the content of the component (C) is more than 0% by mass and 9% by mass or less, and the content of the component (C) and the content of the component (B) Mass ratio [(C) component / (B) component] of 0 or more and less than 0.25,
A thixotropic agent for a liquid detergent composition, comprising spherical crystal particles containing the component (A) in the water-containing phase. The thixotropic agent according to claim 1 , wherein the component (C) is an anionic surfactant containing a compound having an aliphatic alkyl group having a carbon number of 8 or more and 20 or less and a sulfonate group. The thixotropic agent according to claim 1 or 2 , wherein the viscosity at a temperature of 20 ° C after one minute when measured at a rotor rotational speed of 60 rpm using a B-type viscometer is 1000 mPa · s or less. It is a manufacturing method of the thixotropic property imparting agent in any one of Claims 1-3 ,
Process (1) which obtains an emulsion liquid by mixing the said (A) component, (B) component, (C) component, and water above melting | fusing point of (A) component, and 5 to 40 degreeC of said emulsion liquid A method of producing a thixotropic agent for a liquid detergent composition, comprising the step (2) of cooling to The method for producing a thixotropic agent for a liquid detergent composition according to claim 4 , wherein the cooling rate is 0.2 ° C / min or more and 5 ° C / min or less in the step (2). A method for producing a liquid detergent composition , comprising the step of mixing a liquid composition containing the thixotropic agent according to any one of claims 1 to 3 and a surfactant. After stirring for 1 minute at a rotor rotational speed of 60 rpm using a B-type viscometer, the viscosity at a temperature of 20 ° C. after 1 minute when measured at a rotor rotational speed of 6 rpm after standing for 1 minute is 300 mPa · s or more A method of producing a liquid detergent composition according to claim 6 .