JP5160079B2 - Detergent composition for clothing - Google Patents

Description

  The present invention relates to a laundry detergent composition.

In recent years, from the viewpoint of further improving detergency, blending nonionic surfactants such as glycerol monoalkyl ethers and polyglycerol monoalkyl ethers, which are mainly made from glycerin derived from plant-derived natural fats and oils, It is disclosed in Patent Documents 1-6.
JP 2001-49290 A JP 2001-49291 A JP 11-310792 A JP-A-4-506367 JP-A-7-500861 Japanese Patent Laid-Open No. 3-17496 JP 2000-160190 A

  However, these glyceryl monoethers or polyglyceryl monoethers are not always satisfactory in terms of detergency when used in a laundry detergent composition. The invention of Patent Document 7 relates to a low-foaming detergent, and the blending thereof is not suitable as a detergent composition for clothing.

  The subject of this invention is providing the detergent composition for clothes excellent in the detergency.

  The present invention comprises a polyglyceryl monoether (a1) [hereinafter referred to as component (a1)] having a hydrocarbon group having 4 to 22 carbon atoms and a degree of condensation of glycerol of 1 to 7 and an alkali agent (b) [hereinafter, (B) Component] and a detergent composition for clothing comprising (a1) a polyglyceryl monoether (a) represented by the following general formula (1) (hereinafter referred to as component (a)) Relates to a detergent composition for clothing.

[In formula, R is a C4-C22 hydrocarbon group, and n is a number of 3-5. ]

  ADVANTAGE OF THE INVENTION According to this invention, the detergent composition for clothing which shows the outstanding detergency is provided.

<(A1) component and (a) component>
The present inventors have found that when a monoalkyl ether of glycerin or a monoalkyl ether of polyglycerin is used in a detergent composition for clothing, the bonding mode of the glycerin skeleton greatly affects the cleaning power. That is, as the polyglyceryl monoether of the component (a) used in the present invention, the one having a linear polyglycerin structure in which glycerin skeletons are linearly bonded and having a glycerin condensation degree in a specific range is excellent Detergency is shown.

  That is, in the present invention, it is necessary that n = 3 to 5 in the compound represented by the formula (1), and the component (a) is 70% by mass or more, preferably 70 to 99% by mass in the component (a1). More preferably, it occupies 90 to 100% by mass. In particular, the content of the component with m = 1, 2 is preferably less than 30% by mass, more preferably less than 20% by mass, and even more preferably less than 10% by mass in the component (a1) from the viewpoint of detergency. Preferably it is less than 5 mass%. On the other hand, the content of the component of m = 6, 7 is preferably less than 30% by mass, more preferably less than 20% by mass, even more preferably less than 10% by mass in the component (a1) from the viewpoint of detergency. Preferably it is less than 5 mass%.

  In addition, it is preferable that polyglyceryl ethers other than the component (a1) are not included.

  In the general formula (1) of the component (a), R is a hydrocarbon group having 4 to 22 carbon atoms, and preferably an alkyl group having 6 to 20 carbon atoms from the viewpoint of cleaning performance.

  The component (a1) containing the polyglyceryl monoether of the component (a) used in the present invention in the ratio of the present invention is represented by the polyglycerin represented by the following general formula (2) and the following general formula (3). It can be obtained by reacting with alkyl glycidyl ether (R is preferably an alkyl group having 6 to 20 carbon atoms).

  The polyglycerin represented by the general formula (2) can be synthesized by glycerin acetal and epihalohydrin.

  The alkyl glycidyl ether represented by the general formula (3) can be synthesized with the corresponding alcohol and epihalohydrin. Moreover, as a commercial item, Yokkaichi Gosei Co., Ltd. Epogosey EX, cetyl glycidyl ether, stearyl glycidyl ether, etc. are mentioned.

<(B) component>
Examples of the component (b) include carbonates, bicarbonates, silicates, orthosilicates, metasilicates, crystalline silicates, and phosphates. As the salt, alkali metal salts such as sodium salt and potassium salt are preferable. These alkaline agents can be used alone or as a mixture of two or more. Specific examples include sodium carbonate, potassium carbonate, sodium hydrogen carbonate, No. 1 sodium silicate, No. 2 sodium silicate, No. 3 sodium silicate, sodium tetraborate, sodium pyrophosphate, sodium tripolyphosphate, and the like. Here, the crystalline silicate has a maximum pH of 11 or more in a dispersion dispersed in 0.1% by mass in ion exchange water at 20 ° C. It is an alkaline substance that requires a 0.1 N HCl aqueous solution, and is distinguished from zeolite (crystalline aluminosilicate). The crystalline silicate is preferably a layered one. JP 7-89712 A, JP 60-227895 A and Phys. Chem. Glasses 7, p127-p138 (1966), Z. Kristallogr., 129, p396. -p404 (1969) etc. can be used. 0.42Na ₂ O · 0.14K crystalline silicate represented by _{2 O · SiO 2 · 0.03CaO ·} 0.0005MgO is preferably used. In addition, powdered and granular products are available from Hoechst under the trade name “Na-SKS-6” (δ-Na ₂ Si ₂ O ₅ ).

<Detergent composition for clothing>
The detergent composition for clothing of the present invention can contain components known in the field of detergents, zeolites and other detergents for clothing, in addition to the above components (a1) and (b).

<Surfactant>
The detergent composition for clothing of the present invention can contain a surfactant other than the component (a1). Examples of the surfactant other than the component (a1) include one or a combination of an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, and a cationic surfactant. Is an anionic surfactant and a nonionic surfactant.

  Examples of the anionic surfactant include a sulfate ester salt of an alcohol having 10 to 18 carbon atoms, a sulfate ester salt of an alkoxylate of an alcohol having 8 to 20 carbon atoms, an alkylbenzene sulfonate, an alkyl sulfate ester salt, and a paraffin sulfonate. , Α-olefin sulfonate, α-sulfo fatty acid salt, α-sulfo fatty acid alkyl ester salt or fatty acid salt are preferred. In the present invention, a linear alkyl benzene sulfonate having an alkyl chain having 10 to 14 carbon atoms, more preferably 12 to 14 carbon atoms is particularly preferable. As a counter ion of these salts, alkali metal salts and amines are preferable, and sodium and / or potassium, monoethanolamine, and diethanolamine are particularly preferable.

  Nonionic surfactants include polyoxyalkylene alkyl (carbon number 8-20) ether, alkyl polyglycoside, polyoxyalkylene alkyl (carbon number 8-20) phenyl ether, polyoxyalkylene sorbitan fatty acid (carbon number 8-8). 22) Ester, polyoxyalkylene glycol fatty acid (carbon number 8 to 22) ester, and polyoxyethylene polyoxypropylene block polymer are preferable. In particular, as a nonionic surfactant, 4 to 20 moles of alkylene oxide such as ethylene oxide or propylene oxide is added to an alcohol having 10 to 18 carbon atoms [HLB value (calculated by Griffin method) is 10.5 to 15. 0, preferably from 11.0 to 14.5] polyoxyalkylene alkyl ethers are preferred.

<Silicate compound>
What is widely utilized as a builder for detergents can be used for the silicate compound of this invention. For example, crystalline or non-crystalline aluminosilicate, silicate, etc. are mentioned. Of these, zeolite is preferable.

  As the zeolite, a compound represented by the formula (c1) is preferable, and a compound represented by (c2) is more preferable.

a (M ₂ O) · Al ₂ O ₃ · b (SiO ₂ ) · w (H ₂ O) (c1)
(In the formula, M represents an alkali metal atom, a, b, and w represent molar ratios of the respective components. Generally, 0.7 ≦ a ≦ 1.5, 0.8 ≦ b ≦ 6, and w is an arbitrary value. Represents a positive number.)
_{Na 2 O · Al 2 O 3} · n (SiO 2) · m (H 2 O) (c2)
(Here, n represents a number from 1.8 to 3, and m represents a number from 1 to 6.)

  Examples of the zeolite include synthetic zeolite represented by A-type, X-type and P-type zeolite. A suitable average particle size of zeolite is 0.1 to 10 μm.

<Other ingredients>

  Moreover, the detergent composition for clothes of this invention can contain organic builders and inorganic builders other than (b) component and a zeolite. Organic builders include carboxylates (aminocarboxylates, hydroxyaminocarboxylates, hydroxycarboxylates, cyclocarboxylates, maleic acid derivatives, oxalates, etc.), organic carboxylic acid (salt) polymers (acrylic acid) Polymer and copolymer, polyvalent carboxylic acid polymer and copolymer, glyoxylic acid polymer, polysaccharides and salts thereof, and the like. Of these, organic carboxylic acid (salt) polymers are preferred. In these builder salts, the counter ion is preferably an alkali metal salt or an amine, particularly sodium and / or potassium, monoethanolamine, or diethanolamine. These builders can be used alone or in combination of two or more.

  The detergent composition for clothing of the present invention comprises a bleaching agent (percarbonate, perborate, bleach activator, etc.), a recontamination inhibitor (carboxymethylcellulose, etc.), a softening agent (dialkyl type quaternary ammonium salt). , Clay minerals, etc.), reducing agents (sulfites, etc.), fluorescent brighteners (biphenyl type, aminostilbene type, etc.), foam control agents (silicone, etc.), perfumes, enzymes (proteases, cellulases, pectinases, amylases, lipases, etc.) ) And the like can be contained.

  Further, surface modification may be performed from the viewpoint of fluidity and caking resistance when the composition is in the form of particles. As the surface modifier, zeolite can be used. Besides, silicate compounds such as calcium silicate, silicon dioxide, bentonite, talc, clay, amorphous silica derivatives, metal soap, powder surfactants, etc. Fine powder, carboxymethyl cellulose, polyethylene glycol, polyacrylic acid soda, water-soluble polymers such as polycarboxylic acid salts such as copolymers of acrylic acid and maleic acid or salts thereof, and fatty acids. More preferred is zeolite. Among the components (b), crystalline silicate is preferable because it also has an effect as a surface modifier.

  The detergent composition for clothing of the present invention preferably contains 1 to 80% by mass, further 3 to 40% by mass, particularly 5 to 20% by mass of the component (a1).

  Moreover, it is preferable that the detergent composition for clothing of this invention contains (b) component 1-90 mass%, 5-50 mass%, especially 10-40 mass%.

  Moreover, it is preferable that the detergent composition for clothes of this invention contains 0.1-50 mass% surfactant other than (a1) component, 3-30 mass%, especially 5-15 mass%.

  Moreover, it is preferable that the detergent composition for clothes of this invention contains 1-90 mass% of zeolite, 5-50 mass%, especially 10-40 mass%.

  Moreover, it is preferable that the detergent composition for clothes of this invention contains 0.1-80 mass% of inorganic salts other than (b) component, Furthermore, 5-50 mass%, Especially 10-40 mass% is contained.

  The detergent composition for clothing of the present invention may be liquid or powder. However, when it is powdery for reasons of detergency, the bulk density is 300 to 1000 g / L, more preferably 500 to 900 g / L, and particularly 600 to It is preferable that it is 800 g / L. Moreover, it is preferable that an average particle diameter is 150-3000 micrometers, 500-1500 micrometers, especially 600-1200 micrometers.

  In the case of a liquid form for solubility reasons, the viscosity is preferably 1 to 1000 mmPa · s, more preferably 10 to 500, and particularly preferably 50 to 300. The pH is preferably 4 to 13, more preferably 5 to 11, and particularly preferably 7 to 11.

  A detergent composition shown in Table 1 was prepared using the following components, and the detergency was evaluated by the following method. The results are shown in Table 1.

A-1: lauryl glycidol and 3-glycolyl linear addition lauryl ether obtained by reacting polyglycerol with n ′ of 1 in the general formula (2) [component (a) in component (a1) Content of 100 mass%]
A-2: lauryl glycidol and 4-glycolyl linear addition lauryl ether obtained by reacting polyglycerin having n 'of 2 in general formula (2) [component (a) in component (a1) Content of 100 mass%]
A-3: lauryl glycidol and 5-glycolyl linear lauryl ether added by reacting polyglycerin having n ′ of 3 in the general formula (2) [component (a) in component (a1) Content of 100 mass%]
A-4: polyglyceryl lauryl ether obtained by reacting lauryl alcohol with 4 moles of glycidol in the presence of an alkali catalyst [content of component (a) in component (a1) 20% by mass]
・ Ethoxylate nonion: polyoxyethylene dodecyl ether with an average addition mole number of 6 mol ・ LAS: Neoperex G-15 manufactured by Kao Corporation
・ Zeolite: 4A type zeolite with an average particle size of 3 μm, manufactured by Tosoh Corporation

[2] Detergency Evaluation Method After dissolving 0.6667 g of the detergent composition shown in Table 1 with respect to 1 L of tap water, 5 spinach-contaminated cloths prepared as described below were put, and 80 revolutions / minute using a tartometer. Washing was performed at 20 ° C. for 10 minutes under the following conditions. After rinsing sufficiently, it was dried and the washing rate was measured by the following formula.

Washing rate (%) = (reflectance after washing−reflectance before washing) / (reflectance of white cloth−reflectivity before washing) × 100

  The reflectance was measured with NDR-10DP manufactured by Nippon Denshoku Industries Co., Ltd. using a 460 nm filter.

<Preparation of spinach-contaminated cloth>
After commercially available spinach was pulverized with a mixer, the produced liquid portion was filtered off with a cotton cloth. 0.5 g of the obtained liquid was uniformly applied onto a 6 cm × 6 cm cotton gold cloth # 2023 and dried at 20 ° C. for 12 hours for the test.

Claims (4)

Polyglyceryl monoether (a1) [hereinafter referred to as component (a1)] having a hydrocarbon group having 4 to 22 carbon atoms and a degree of condensation of glycerol of 1 to 7 , an alkali agent (b), and a component (a1) A detergent composition for clothing containing a surfactant other than
(A1) 3 to 40% by mass of component, (a1) 3 to 30% by mass of surfactant other than component,
In the component (a1), polyglyceryl monoether (a) represented by the following general formula (1) (hereinafter referred to as component (a)) occupies 70% by mass or more.
A detergent composition for clothing.

[In formula, R is a C4-C22 hydrocarbon group, and n is a number of 3-5. ] The detergent composition for clothing according to claim 1, wherein R in the general formula (1) of the component (a) is an alkyl group having 6 to 20 carbon atoms. The detergent composition for clothing according to claim 1 or 2, which contains 1 to 90% by mass of component ( b). The detergent composition for clothing according to any one of claims 1 to 3, which is a powdery composition.