JPS5923595B2 - Acidic liquid cleanser composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an acidic type liquid cleanser composition having excellent cleaning power and stability, and more particularly, it relates to a water-insoluble abrasive substance, linear alkylbenzene sulfonate (hereinafter referred to as LAS). ) and a surfactant consisting of an aliphatic alkanolamide compound, an acidic substance, and water, and the acidic substance is partially neutralized, obtained by partially reacting an alkanolamine with sulfamic acid or a mixture of sulfamic acid and bisulfate. An acidic liquid cleanser composition characterized in that the substance is an acidic liquid cleanser composition.

The following points are important for an acidic liquid cleanser. (1) Long-term stability under acidic conditions.

(2) Do not allow the abrasive material to settle or separate.

(3) It has a better dirt removal effect on hard surfaces than neutral or alkaline type cleansers.

(4) It should be relatively safe to handle.

As a conventionally known acidic liquid cleanser
No. 61 contains oxalic acid, but its ability to remove contamination is extremely low, making it impractical. Moreover, sodium oxalate, which is used in combination, is difficult to dissolve in water and has extremely poor workability.

In addition, surfactants containing oxalic acid and sodium oxalate have disadvantages such as being economically expensive. Furthermore, since the product disclosed in Japanese Patent Publication No. 50-36847 contains mineral acids, especially hydrochloric acid, there are safety problems such as generation of gas depending on the use, and HLB balance must be taken into account. The selectivity of the surfactant is severe and cannot be said to be common.

In addition, hydrochloric acid has a strong metal corrosive power, making it difficult to use in places with metal materials.

In addition to the above, there have been research and development efforts on liquid cleansers, not limited to acidic ones, but there are very few that guarantee stability from the separation and sedimentation of abrasive substances and have effective cleaning and polishing effects. At present, it is even more difficult to maintain this balance with acidic types.

In the present invention, first, sulfamic acid is used as an essential component as an acidic substance, and bisulfate is used if necessary.

The purpose of this is that bisulfate, also called powdered sulfuric acid, is much easier to handle and safer than liquid sulfuric acid, and has extremely little corrosive power to metals, so it is widely used in solid cleansers and neutralizers. ing.

On the other hand, sulfamic acid is called aqueous ammonosulfuric acid, and like the former, it has strong acidity, but it is less corrosive and is a solid acid that is easily soluble in water and is used as a raw material for sweeteners.
The effective combination of these two itself is disclosed in Japanese Patent Application Laid-Open No. 5233904.
As disclosed in

The present inventor focused on the excellent dirt-dissolving power, handling safety, and relatively low cost of these inorganic solid acids, and developed an alkanolamine, especially viscous triethanol with little ammonia odor, as a means of incorporating it into an acidic liquid cleanser. The purpose is to use amines in a specific proportion to generate partial reactants of acidic components, thereby maintaining acidity and stability over a long period of time.

Typical alkanolamines include monoethanolamine, diethanolamine, triethanolamine, and diisopropanolamine, but triethanolamine is particularly advantageous due to its ease of reaction, low viscosity, and low ammonia odor.

These are commonly used in the field of detergents as urea decomposition inhibitors in cosmetics such as cream lotions, soaps, and liquid detergents, and are extremely safe. The key point of the present invention is that the above-mentioned acidic substance and alkanolamine form a partial reactant, exhibiting non-Newtonian properties with LAS and fatty acid alkanolamide under a certain range of conditions, and suspending the water-insoluble abrasive material. be.

Here, the partial reactant refers to a reactant between sulfamic acid and alkanolamine, for example. The reaction formula is expressed by the following general formula. NH2SO
3H+R-NH2→RNH2・HOSO3NH2NH2
SO3H+R3N-+R3N-HOS3NH2 Specifically, sulfamic acid (NH2SO3H.MW=97)2.
Alkanolamine (triethanolamine (CH2CH2OH)3NMW=149) for 5 to 5.0 parts by weight
1 part by weight is preferred, and when bisulfate and sulfamic acid are used together, it is convenient that the sulfamic acid is 90 to 10 parts by weight to 10 to 90 parts by weight of the bisulfate, and when reacting with triethanolamine, the above Sodium bisulfate, potassium bisulfate, etc. are preferably used as the bisulfate in which 1 part by weight of triethanolamine per 2 to 6 parts by weight of the acidic substance is the most advantageous combination for stability.

The same applies to monoethanolamine and monoisopropanolamine, but an excellent combination is when 80% or less of triethanolamine is used, preferably 80 to 50%. Diethanolamine has an excellent usage amount of 90 to 70% of triethanolamine. Also, LAS and fatty acid alkanolamide used as surfactants are L
Fatty acid alkanolamide 0.15-0.
If the weight is greater or less than 55%, signs of separation of the water-insoluble abrasive material are likely to be observed. Although it is most convenient to use the same amount of these as the acidic substance, they may be freely selected in an amount of 0.50 to 1.50 based on 1 part of the acidic substance in consideration of economy and workability.

The typical LAS salt is soda salt, but potassium salt and triethanolamine salt may also be used.

It is more advantageous for workability to use these in the form of an approximately 25% aqueous solution.

The fatty acid sulfur alkanolamide is preferably diethanolamide of oil fatty acid or lauric acid, and if necessary, ethoxylated monoethanolamide may be used in combination.

These surfactants may be combined with other surfactants that are highly acidic in a total amount of about 20 to 30%.

For example, alkanesulfonate soda salt, alphaolefin sulfonate soda salt, polyoxyethylene alkylphenol sulfonate soda salt, diophthylsulfosuccinate soda salt, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenol ether, polyoxyethylene dialkyl ether, etc.

The water used may be purified water such as distilled water or ion-exchanged water, as well as hard water or tap water. A particularly preferred water-insoluble polishing material contains at least 70% SiO2.
It is an inorganic substance containing the above, and in addition to this, VCAl2O
3. MgO. It may also contain Na2OlK2O. The shape of SiO2 may be amorphous (AMORPHOUS), crystalline, mixed crystal, etc., and it is preferable that the particle size is distributed around 10 microns.

However, if more polishing power is required, particles having a particle size of 20 to 50 microns may be used.

It is also possible to use materials containing less than 70% SiO2, such as kaolin and feldspars, but materials containing carbonates are considered unsuitable due to their properties. The content of water-insoluble abrasive material is 10-70%, preferably 30-50%. In addition, it is okay to add approximately 2% or less of non-alkaline salts such as sodium montmolinite, other ammonium chloride, zinc chloride, sodium chloride, sodium sulfate, etc. to improve stability. There is a possibility that the activator salts out, which is disadvantageous. In addition to the above-mentioned substances, the present invention can also contain dyes and pigments, fragrances, builders, stabilizers (chelating agents, antioxidants), antibacterial agents, preservatives, and the like. Furthermore, PVA. CMC. PVP, xanthan gum, carrageenan, pectin, PVACl styrene monomaleic anhydride copolymer, vinyl methyl ether monomaleic anhydride copolymer, methylolated starch,
It is also possible to contain water-soluble thickeners such as hydroxy starch, viscosity modifiers such as PG, glycerin EG, and the like. The manufacturing method of the liquid cleanser of the present invention is also characterized by being very simple.

That is, it is easily produced by dissolving an acidic substance in tap water and sequentially or simultaneously mixing an alkanolamine, an abrasive substance, and a surfactant thereto.

The pH of this acidic liquid cleanser is approximately 1.
Since it is in a stable liquid state with a value of around 3 to 300 ml, it does not scatter during use and has appropriate fluidity, so it can be squeezed out of a container like a liquid detergent and applied to contaminated surfaces for cleaning. It is efficient and economical. Examples of the present invention will be described below.

Example 1 6.0y of sulfamic acid and 1.5y of triethanolamine (90% or more as triethanolamine) were mixed with 30y of water.
Dissolves in y.

``Next, 25% aqueous solution 18y of LAS soda salt and olefin fatty acid diethanolamide 17 are added, and silicate-based water-insoluble abrasive material 407 is added and mixed well.

Add fragrance and color if necessary, and make 1007 with water.
For comparison, one that does not contain triethanolamine → ALAS = one that uses alkanesulfonate-soda salt instead of soda salt → B one that does not contain oil fatty acid diethanolamide → C that uses glycolic acid instead of sulfamic acid The state of stability of the water-insoluble abrasive material was observed for product →D.

Example 2 1.57 sulfamic acid and 3.5 f7 of sodium bisulfate are dissolved in 1.4 y of triethanolamine and 25 f7 of water.

Next, LAS = 18y of a 25% aqueous solution of soda salt, 1.5y of oil fatty acid diethanolamide and pure silica (Sl
457 (99% or more as O2) is mixed to obtain a slurry cleanser with a white appearance.

This product has a pH of 1.7 viscosity (B type viscometer, 20℃ black -
30 motors (60 rpm) was 1700 cp. As a model of dirt [after adding 107 ml of soybean lecithin, 50 ml of petroleum ether, and 50 ml of ethanol to 10 y of calcium carbonate and mixing well] 10X10CT! Apply to 20 tile surfaces of L, leave for 3 weeks and then wash.

For comparison [sulfamic acid 1.57 and sodium bisulfate 3.5V dissolved in water to make 100f7] → E [oxalic acid 1.22
Dissolve y and sodium oxalate 0.767 in water, add LAS = soda salt 3.34r, ethoxylic oil fatty acid monoethanolamide 1.63y and silica 607, and dissolve with water to 100%.
y]→F [LAS-soda salt 4%, ethoxylated acetate fatty acid monoethanolamide 2%, potassium pyrophosphate 2.38%, acidic sodium pyrophosphate 1.00%
, a silicate abrasive material made up of 50% water and 100% - this is a neutral type] → The following results were obtained for G.

The removal rate is expressed as a percentage of the applied amount (remaining) after cleaning compared to the initial applied amount.

From the above, the present invention has sufficient effects even when simply immersed, and can be removed almost evenly when washed.

Example 3 An acidic liquid cleanser consisting of the following formulation was obtained.

(Numbers are weight %) Signs of separation of the water-insoluble abrasive material were observed after one month at 0 to 5°C, 20°C (room temperature), and 45 to 50°C. Example 4 Add 157% of sodium bisulfate and 157% of sulfamic acid to 77% of tap water.
Thoroughly dissolve 7.87 g of triethanolamine in 0y at 40°C and stir thoroughly.

Claims (1)

[Scope of Claims] 1 Consists of 10 to 70 parts (by weight, the same applies hereinafter) of a water-insoluble abrasive substance, 2 to 20 parts of a surfactant, 2 to 20 parts of an acidic substance, and 20 to 70 parts of water, where the surfactant is A linear alkylbenzene sulfonate and a fatty acid alkanolamide compound, characterized in that the acidic substance is a partially neutralized substance obtained by partially reacting an alkanolamine with sulfamic acid or a mixture of sulfamic acid and bisulfate. Acidic liquid cleanser composition. 2. The acidic liquid cleanser composition according to claim 1, wherein the alkanolamine is triethanolamine. 3 The surfactant is 1 part of a linear alkylbenzene sulfonate and 0.15 to 0.0 parts of a fatty acid alkanolamide compound.
The acidic liquid cleanser composition of claim 1, which is a mixture of 55 parts. 4. The acidic liquid cleanser composition according to claim 1, wherein the acidic moiety is a partially neutralized substance of 2.5 to 5.0 parts of sulfamic acid and 1 part of alkanolamine (as triethanolamine). 5 The acidic substance is a partially neutralized substance of 2 to 6 parts of a mixture of sulfamic acid and bisulfate (mixed weight ratio 70 to 95:5 to 30) and 1 part of alkanolamine (as triethanolamine) Acidic liquid cleanser composition according to scope 1.