JPS5865795A - Liquid detergent composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a phosphorus-free liquid detergent composition that improves the storage stability of water-bathable polyacrylate, which is a molecular builder and is blended as a detergency enhancer, and is particularly effective against mud stains. The present invention relates to a composition having superior detergency against.

Generally, cleaning compositions are composed of a surfactant and a detergency enhancer. Phosphate builders such as condensed phosphates have traditionally been used as cleaning power improvers, but the problem of eutrophication of rivers, lakes, and marshes has been raised. As a substitute for phosphate builder, NT^, ED
Aminocarvone such as TA #! Hydroxycarboxylic acids such as citric acid, maleic acid, and polyacrylates are known, but they have poor cleaning power, especially in cleaning mud and dirt, storage stability, and safety. It wasn't always enough.

The present inventors focused on water-bathable polyacrylate, which is a polymer builder, and added it to the composition as Bilta.
In order to improve the storage stability, which is a disadvantage of conventional products, and obtain superior cleaning power, we have carefully studied the following methods: (1) As a surfactant, a nonionic surfactant and an anionic surfactant 1+ are a mixture thereof; (2) A phosphorus-free liquid with superior detergency and storage stability by combining a specific water-bathable polyacrylate as a polymer pilgu, and (3) a specific hydrotroso agent as a builder storage stabilizer. It was discovered that a cleaning composition could be obtained, and the present invention was developed.

That is, the liquid cleaning composition of the present invention contains IA) a nonionic surfactant and/or an anionic surfactant.
~15ikjt%, (B) Cm ion trapping ability is 250
(C*COs”9/9) or higher, and the average degree of 1 is 50
0 or less homopolymer of acrylic acid, preferably 1-15% by weight of its water-bathable salt, and the general formula () (wherein R3 and R1 represent hydrogen t or a methyl group,
M represents an alkali metal and fc represents an alkanolamine.

It is characterized by containing 1 to 15 hydrotroso agents represented by 1 to 15 times.

The nonionic or anionic surfactant as component (A) may be used alone or as a mixture, and may be present in the composition with 1-15f.
iii%, preferably 3 to 10%. If this amount is less than 1% vcl'M, the cleaning power will not be sufficient, and if it exceeds 15%, storage stability will be lacking.

Specific examples of nonionic surfactants include (1) c,
~, 6-alkylphenol EO adduct (KO average number of moles added 6 to 12) (2) c, ~fatty alcohol EO adduct (EO
Examples include (average number of added moles of 6 to 13) (al C&~11 secondary-alcohol EO adduct (average number of added moles of EO of 6 to 15). EO coats ethylene oxide.

Specific examples of anionic surfactants include (1) c,
~1゜Aliphatic alcohol EO addition sulfate ester salt (EO
Average number of added moles 1 to 5) (2) ctt~,. α-olefin sulfonate (
3) Cm-u alkylbenzenesulfone w/, salt (4)
Examples include Nisgul sulfate salt of Cs~l and aliphatic alcohol.

Among the above activators, particularly preferred are (I C1
1-8. Secondary-alcohol EO adduct (average number of moles of EO added 7 to 10) (2) Cm-, alkylphenol EO adduct (E
O average number of moles added 7-10) (3) C□-1. Aliphatic alcohol-yvEo adduct (go
The average additional mole A/number 8 to 10).

The above-mentioned activator is a compatible one used in the present invention, and any activator can be used as long as it exhibits activating ability.

The homopolymer of acrylic acid or its water-soluble salt (hereinafter referred to as acrylic acid polymer), which is the component (B), has a Ca ion trapping ability of 250 (CmCO1TIQ/l/
3 or more and an average storm combination of 500 or less is used. In the present invention, homopolymers include both those consisting purely of 11 acrylic rI units and copolymers containing 5 mol % or less of a copolymer component (for example, methacrylic acid, etc.) ↓ Acrylic acid and 5 mol % If a copolymer of methacrylic acid or maleic anhydride, which has been used for a long time, or a copolymer of maleic anhydride and other monomers is used, sufficient detergency against mud stains cannot be obtained. Also,
The water-soluble salt may be one obtained by polymerizing acrylic acid and then neutralizing it with an alkali to form an acrylate, or one obtained by polymerizing an acrylate. Examples of substitutes include polyacrylic acid alkali metal salt, polyacrylic acid ethanolamine salt, etc., and sodium polyacrylate is preferred.

Cm capture ability refers to the amount of Ca that can be captured per li of builder (acrylic acid polymer) until the residual hardness reaches 1 ppm.
k (calculated as CaC01, unit I; 9), and was actually determined by the following method.

(1) Measuring device ion concentration meter Nitoa Denpa Kogyo ■Digital ion concentration meter,
Model IM-2OB Force y sium electrode: Orion Research, 93 series Reference electrode: Orion Research, to-o2-oo amount (2
) Measurement conditions Temperature 25°C, pH 10, liquid volume 3001 (3) Measurement method 300 d of bath liquid with a calcium concentration of 90 ppm (calculated as CaC01) was added, a calcium electrode and a reference electrode were inserted into this solution, and the mixture was stirred with a stirrer. At the same time, 1 ml of a 2% aqueous builder solution was added dropwise, and after stirring for 2 to 3 minutes, the potential (V) was read using an ion densitometer. Repeat this operation to determine the builder iy - residual calcium concentration curve 1i81t from the calibration curve prepared in advance, and set the point where the residual hardness is 1 ppm as the end point.
The amount of CaCO2 (I) that can be captured by this 9 was calculated, and this amount was taken as the Ca capture ability.

In the present invention, an acrylic acid polymer having a Ca trapping ability of 250 or more, preferably 350 or more is used. If this value is less than 250, the detergency against mud stains will be particularly poor, and storage stability will also deteriorate.

,i? The average degree of polymerization of the acrylic acid polymer is 500 or less, preferably 50 to 100. If the average degree of polymerization is greater than 500, both detergency and storage stability will be poor, and those with an average degree of polymerization of several thousand units will act as a flocculant.

The polyacrylic acid electropolymer is contained in the composition in an amount of 1 to 15% by weight, preferably 3 to 10% by weight.

If this amount is less than 1, sufficient combination effect will not be obtained.
Also, even if you burn a 15-weight rice cake, the cleaning power will not improve, and
Fluid properties deteriorate.

Specific examples of component (C) represented by general formula (1) include alkali metal salts or ethanol acine salts of benzenesulfonic acid, toluenesulfonic acid, or xylenesulfonic acid, and preferred ones include p -) Alkali metal salts of luenesulfonic acid, ethanolate, and alkali metal salts of xylenesulfonic acid.

The blending amount of component (C) is 1 to 15% by weight, preferably 3 to 15% by weight.
The amount is 9% by weight, and if this amount exceeds 15%, the high temperature point decreases significantly and the high temperature storage stability deteriorates.

The liquid cleaning composition of the present invention further includes, as an optional component,
It may contain low temperature stabilizers such as ethanol, freezing point depressants, foam control agents such as fatty acid soaps, as well as chelating agents, disinfectants, ultraviolet absorbers, color cleaners, fragrances, bleaching agents, fluorescent agents, etc. In addition to the general liquid type, it is also possible to use a spray set.

According to the present invention, simple storage stability and great cleaning power, especially mud stain cleaning power, are achieved by specifically blending an activator, a specific acrylic acid layer combination, and a nodrotrozo agent of general formula (1). In addition, it is possible to obtain a phosphorus-free liquid detergent composition that has less sliminess than the case where pyrophosphate is used as a builder. Due to the above-mentioned excellent properties, this cleaning composition has a wide range of applications in general residential cleaning products.
In particular, it has a good ability to clean mud and dirt,
It is effective for cleaning rags, footwear such as athletic shoes, tray panties, etc.

Example 1 Compositions were prepared according to the following formulations, and the performance of polymer pill goo was evaluated.

C1l”-11 secondary alcohol EO adduct (E
O average number of moles added 9) 5% by weight polymer builder (listed in Table 1) 7% by weight Sodium p-toluenesulfonate 7% by weight ethanol
2% water by weight
Note that the detergency and storage stability in the table were tested using the following tests.

(1) Cleaning power Using dirt rich in inorganic dirt listed in Table 2, oil chemistry V
A soiled cloth with a reflectance of 42 ± 2 cm was prepared according to the method described in J.O.
The samples were subjected to a cleaning test and washed under the cleaning conditions shown in Table 2, and the cleaning power was calculated.

Cleaning conditions Cleaning device: Tevg-0-Tomsrt@rCleaning concentration: 0.25C Cleaning temperature: 25℃ Washing oil hardness = 3°DH 11Jj during cleaning: 10 minutes bath Ratio: 30 times for calculation of cleaning power /S= (1-,R)”/2 R[Kub@1k H
unk formula] R: Reflectance (Chin (2) Preservation test 1 god of the solution was placed in a poly transparent solution, stored at each storage temperature, and the changes in the solution were visually observed.

○: Transparent and uniform ○ to △; wL cloudy liquid Δ; slightly cloudy liquid ×; cloudy and cloudy 2 @ Separation Example 2 Compositions 9 and 9 were prepared using the following formulations, and their performance was evaluated.

C11-, secondary alcohol EO adduct (average number of moles of EO added 9) 7% by weight Sodium polyacrylate 5% by weight (average blood concentration i70.Ca captured we a 70 my/I) ft
tf hydrotope agent (listed in Table 3) 5wt% water Balance (see margin below) Example 3 Compositions were prepared using the following formulations, and their performance was planned.

Nonionic, anionic activator alone or mixture (g portion A) 5-20% by weight Sodium polyacrylate 5% by weight (Ca trapping capacity 360. Average chassis L 100 ) p-) Potassium luenesulfonate 511% Ethanol
2% water by weight
Balance (margin below)

Claims (1)

[Claims] 1. (A) nonionic surfactant and/or anionic surfactant 1-15% by weight, (B) Ca ion trapping ability of 2 s O [chcosrQ/I) or more, and A homopolymer of acrylic acid or a water-soluble salt thereof having an average degree of polymerization of 500 or less 1 to 15
) (In the formula, "1 and R3 represent hydrogen or a methyl group,
M represents alkali gold, 4, or alkanolamine. A liquid detergent composition comprising a hydrotrope in an amount of 1 to 15 Jt.