JPH01242697A - Liquid cleanser composition - Google Patents

Abstract

PURPOSE:To obtain the title compsn. which has excellent storage stability and does not cause toilet seat cracking, by incorporating a partially crosslinked polyacrylic acid, an anionic surfactant, a fatty acid (salt) and an alkanolamide each of particular type as essential components with the balance being a water- insoluble abrasive material and water. CONSTITUTION:0.1-1.0wt.% (hereinafter simply %) partially crosslinked polyacrylic acid having an average degree of polymn. of 10<3>-10<5> and a Brookfield yield value in 0.3wt.% aq. soln. of 100g/sec.cm or higher, 0.1-5.0wt.% at least one anionic surfactant contg. a sulfate or sulfonate but not contg. an oxyalkyl chain (e.g., alkanolamine salt or alkali metal salt of an alkylbenzensulfonate, etc.), 0.05-2.0% 10-22C fatty acid or alkali (alkaline earth) metal salt or alkanolamine salt thereof and 0.1-5.0% 10-22C fatty acid alkanolamide are incorporated as essential components. Further, 5-55% at least one water-insoluble abrasive material (e.g., silica, zeolite, etc.), and water are added thereto and blended together.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a liquid cleanser composition, more specifically, suitable for cleaning toilet bowls and toilet floors, which does not cause cracking of toilet seats made of ABS resin, and which can be used for a long period of time. The present invention relates to a liquid cleanser composition for flush toilets that has excellent storage stability.

[Prior art and problems to be solved by the invention] Due to concerns about the negative effects of acidic toilet cleaners on the microorganisms in private septic tanks of flush toilets, the use of neutral liquid toilet cleaners for flush toilets has become widespread. . These neutral toilet cleaners usually contain a thickening agent, such as partially crosslinked polyacrylic acid, to improve the ease of cleaning vertical surfaces.

This partially cross-linked polyacrylic acid tends to aggregate in the presence of electrolytes, resulting in low viscosity and low yield values, so the surfactant that is usually used in combination is a nonionic surfactant, especially one containing an oxyethylene group. There are many nonionic surfactants that
1). This type of neutral toilet cleaner does not drip liquid.
Although it has the great advantage of being mild to the skin, it has the drawback of causing cracks in ABS resin toilet seats.

[Means to solve the problem]

The present inventors have conducted intensive studies to provide a liquid cleaning agent composition for flush toilets that is suitable for cleaning toilet bowls and toilet floors and does not cause cracking of toilet seats made of BS resin. or has sulfonate 4,
The present invention was completed based on the discovery that it is sufficient to blend specific amounts of an anionic surfactant containing no oxyethylene group, a fatty acid, a fatty acid alkanolamide, and a water-insoluble abrasive.

That is, the present invention has an average degree of polymerization of (al) of 103 to 103, and a Brookfield yield value of 0.3% by weight aqueous solution of 100 g/sec.
Partially crosslinked polyacrylic acid with ccm or more 0.1~
1.0% by weight (b) One or more anionic surfactants having a sulfate group or a sulfonate group and not containing an oxyalkyl chain 0.1 to 5.0% by weight fc) Number of carbon atoms 10-22 linear or branched saturated or unsaturated fatty acids or their alkali metal salts, alkaline earth metal salts or alkanolamine salts 0.
05 to 2.0% by weight ([+1 Contains 0.1 to 5.0% by weight of linear or branched saturated or unsaturated fatty acid alkanolamide having 10 to 22 carbon atoms as an essential component, and the remainder is 1 type. The above water-insoluble abrasive and water, and the p++ of the composition is 6.0 to 8.0.
The present invention provides a liquid cleanser composition prepared in accordance with the present invention.

(The partially crosslinked polyacrylic acid of the al component has an average degree of polymerization of 1
The pull/cut yield value of a 0.3% by weight aqueous solution is 100 g/sec-cm or more, preferably 100-1000 g/sec-cm. The Brookfield yield value referred to here is determined by measuring the viscosity at 20°C of an aqueous solution of 0.3% by weight of polyacrylic acid, pH 6.0 to 8.0 (adjusted with triethanolamine), and using the following formula. be.

The Brookfield yield value is a numerical value related to the crosslinking state of molecules, and when the molecular weights are the same, the larger this value is, the more crosslinked the molecules are.

The amount of partially crosslinked polyacrylic acid to be blended in the composition is 0.1 to 1.0% by weight, preferably 0.2 to 0.5% by weight. Viscosity of less than 0.1% by weight is 500cp
s or less, the storage stability of the water-insoluble abrasive becomes poor, and if it exceeds 1% by weight, the viscosity decreases to 5000c.
If it exceeds ps, it becomes dry and there is a problem in use.

Examples of the anionic surfactant having a sulfate group or a sulfonate group and not containing an oxyalkyl chain as the component (b) include alkylbenzene sulfonates having a C8 to C24 alkyl group, alkyl sulfates having a C8 to CI8; C8-Cl1l alkenyl sulfate, cll""cz. olefin sulfonate,
C6-C1l+ alkanesulfonate, C6-C2□
Alkali metal salts, alkaline earth metal salts such as α-sulfo fatty acids, C6 to C2□ α-sulfo fatty acid esters, and 04 to C1° sulfosuccinic acid dialkyl esters,
Examples include alkanolamine salts, and these may be used alone or in combination of two or more.

Particularly preferred in the present invention are alkylbenzene sulfonates, alkali metal salts of olefin sulfonates,
or an alkanolamine salt.

The blending amount of anionic surfactant is 0.1 to 5.0
It is preferably 0.3 to 2.0 weight %, more preferably 0.3 to 2.0 weight %. If it is less than 0.1% by weight, sufficient dirt dispersion power cannot be obtained, and if it is more than 5% by weight, the foam breaking property deteriorates, which is not preferable.

(The c1 component, saturated or unsaturated fatty acid or its alkali metal salt, alkaline earth metal salt, or alkanolamine salt, can be derived from natural coconut oil, palm oil, beef tallow, etc., and can also be obtained from the oxidation of petroleum. The alkyl chain length is preferably C6 to C2t.The blending amount is 0.05 to
2.0% by weight, more preferably in the range of 0.1-0.5% by weight.

Examples of the fatty acid alkanolamide of component (d) are:
Examples include fatty acid monoethanolamide and fatty acid jetanolamide having an alkyl group of CI""CI8, and particularly preferred is fatty acid jetanolamide having an alkyl chain of C6 to C2t. This acyl residue can also be derived from naturally occurring glycerides, such as coconut oil, palm oil, soybean oil, beef tallow, and the like. It can also be obtained, for example, by oxidation of petroleum or hydrogenation of carbon monoxide by the Fischer-Tropsch process.

The blending amount is preferably in the range of 0.1 to 5:0% by weight, more preferably in the range of 0.2 to 1.5%. 0.1% by weight
If it is less than 5.0% by weight, sufficient dirt dispersion power will not be obtained, and if it exceeds 5.0% by weight, foaming will occur inside the septic tank, which is not preferable.

The pH of the composition needs to be adjusted to 6.0 to 8.0 from the viewpoint of influence on microorganisms in the septic tank and irritation to the skin.

Examples of water-insoluble abrasives include silicon dioxide, aluminum oxide, magnesium oxide, titanium oxide, aluminosilicate, silicon carbide, iron oxide, crushed silica, and crushed sand. These may be used alone or in combination of two or more. Typically, the abrasive is present in the composition in an amount of 5 to 55%.
% by weight is added.

Further, in carrying out the present invention, small amounts of fragrances, pigments, dyes, bactericides, and solubilizers can be added as necessary.

〔Example〕

EXAMPLES The present invention will be specifically explained below with reference to Examples, but the present invention is not limited to these Examples.

The compositions shown in Table 1 were prepared, and stress fracture tests were conducted to investigate the adverse effects of each composition on ABS resin, and the long-term storage stability of the compositions was evaluated as follows. In addition, the composition in the table is expressed in weight%.

<Test method> ABS Hi no Kokoro U Each composition is tested under the following conditions, and visually judged after completion.

fil Test piece ABS resin 230mm x 35mm x 2mm (
2) Conditioning temperature -20℃ R1165% Contact time = 20Hr Latent application ff1 = 1.3g/100mm x 35nv+
(Cover the coated surface with gauze) (3) Sesotig The test piece was fixed to a PVC pipe as shown in Figure 2.

(4) Judgment criteria ○ No cracks or cracks are observed.

× Cracks and cracks are observed.

Each composition was stored in a glass bottle under the following conditions, and visually evaluated after storage.

(1) Storage conditions Temperature = 50.20, -5℃ Time = 20 days (2) Judgment criteria ○ Not separated.

Δ There is bleeding on the top of the liquid.

× Separated.

(・) (Preparation of 11 model stains A 3cI11×8CII+ iron test piece was coated with 1.0g of rapeseed oil/carbon black (weight ratio: 5/1) and denatured at 150°C for 130 minutes. Pencil hardness 5B) was used.

(2) Test method After weighing the model soil, it was fixed in a cleaning tester and washed 100 times with a sponge scrubber using 1 g of toilet cleaner under a load of 1 kg. Next, this model stain is washed with water, dried, and weighed. The cleaning power is calculated using the formula below.

(3) Standard detergent composition Silica 1000 water
balance

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the strain in the stress fracture test, and FIG. 2 is a diagram showing the setting of the test piece. Applicant's agent Kaoru Furuya Figure 1-L Main strain ε；□ Figure 2 Test piece/＼

Claims (1)

[Scope of Claims] 1. A liquid cleanser, (a) having an average degree of polymerization of 10^3 to 10^5 and a Brookfield yield value of 0.3% by weight aqueous solution of 100 g/se;
Partially crosslinked polyacrylic acid having a particle size of c/cm or more 0.1 to 1
．． 0% by weight (b) 0.1 to 5.0% by weight of one or more anionic surfactants having a sulfate group or a sulfonate group and not containing an oxyalkyl chain (c) 10 to 5.0% by weight ~22 linear or branched saturated or unsaturated fatty acids or their alkali metal salts, alkaline earth metal salts or alkanolamine salts 0.05~
2.0% by weight (d) Straight chain or branched chain saturated or unsaturated fatty acid alkanolamide having 10 to 22 carbon atoms 0.1 to 5.0
% by weight as essential components, the balance being one or more water-insoluble abrasives and water, and the pH of the composition is adjusted to 6.0 to 8.0.