JPH10298599A - Liquid detergent composition for coating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a liquid detergent composition, capable of manifesting the viscosity for facilitating the coating and a sufficient coating detergency required to effectively remove any foulings causing practical problems in the life such as oil, mud, stain foulings by coating a severely fouled part therewith and then washing the part in a washing machine in relation to washing of mainly textile products and effectively removing the foulings without using the washing machine or other detergents even by coating the textile products therewith and subsequently rinsing the products with water. SOLUTION: This composition contains (a) 10-20 wt.% alkanolamine salt of oleic acid and (b) 0.1-5 wt.% chelating agent, has a pH 8-12 and is obtained by regulating the viscosity of the composition within the range of 20 to 1,000 mPa.s at a temperature within the range of 5-30 deg.C and the viscosity ratio (viscosity at 5 deg.C/the viscosity at 25 deg.C) to <=1 by further including (c) 1-5 wt.% water-soluble solvent therein.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating liquid detergent composition having a viscosity characteristic that makes it easy to apply even when the temperature during use changes.

[0002]

2. Description of the Related Art Conventionally, it is necessary to apply a liquid detergent composition or solid soap in advance to stains on textiles which are difficult to remove only by ordinary washing, and to further remove the stains by hand washing. That is being done. As a liquid detergent composition for this pretreatment, a liquid heavy detergent or a detergent for application is generally used, and intensive studies have been made on containers and preparations thereof.

[0003] For example, Japanese Patent Application Laid-Open No. 60-101199 discloses a composition in which a chelating agent and a specific surfactant are combined. This composition, which is supposed to be sprayed from a bottle, is considered to have a very low viscosity.However, a low-viscosity composition is easy to spread on an object to be washed, and has a high diffusion rate during washing. There was a problem that it was difficult to contribute to power improvement. Conversely, as a composition having a high viscosity, JP-A-62-268871 discloses a paste-like composition in which a nonionic surfactant, a nitrogen-containing compound and a polyhydric alcohol are combined. But,
As described above, the composition having a high viscosity of 1000 mPa · s or more has a problem that it is difficult to come out of the container when the residual liquid is reduced.

A composition having "easy to use" viscosity at room temperature (20.degree. C. or 22.degree. C.) is disclosed in
No. 47100 discloses a composition combining sodium triphosphate, an anionic detergent and a nonionic detergent,
JP-A-59-78300 discloses a nonionic detergent,
A composition combining an anionic detergent, a builder and an alkali metal silicate is disclosed. However, considering the usage conditions such as the temperature difference due to the season in Japan, the viscosity may increase sharply especially at low temperatures in winter, and sufficient technology has not yet been established for application usability corresponding to temperature changes. Did not.

On the other hand, as a patent focusing on the viscosity characteristics of the composition, JP-A-61-69895 discloses a composition comprising a solid suspension builder having characteristics such as non-shear sensitivity and shear stability, an electrolyte and an active ingredient. , JP 6
JP-A-3-69896 and JP-A-63-150393 disclose aqueous thixotropic liquid compositions using clay. The viscosity characteristics of these compositions are based on the relationship between shear force and viscosity at a constant temperature. No mention was made of "viscosity to temperature change (application applicability)".

[0006]

The present invention focuses on the "viscosity" of the composition when it is applied and used. If the viscosity of the composition is too high, it is difficult for the composition to come out of the container and the spinnability is easy to come out. If the temperature is low, the diffusion will be fast and the effect on the target area will not be effective.The viscosity will increase at low temperatures, and the contents will not easily come out of the container during application in winter. Thought.

[0007]

Means for Solving the Problems As a result of intensive studies focusing on coating and washing, there is a viscosity range suitable for coating use, and it becomes an important physical property in terms of usability. Viscosity during use (5 ° C to 30 ° C): 20 mPa · s to 10
Viscosity ratio at 00 mPa · s and temperature (viscosity at 5 ° C. /
(Viscosity at 25 ° C.) was 11 or less.

[0008] In terms of detergency, various studies were conducted on oil stains, mud stains and spot stains, which are typical of hard-to-remove stains. As a result, the alkanolamine salt of oleic acid was removed in the pH range of 8 to 12. A remarkable effect can be obtained when used in combination with a chelating agent.
-5%, more preferably 1-3%,
The present inventors have found that a composition having a viscosity suitable for application cleaning can be obtained while maintaining the effect of the cleaning power, and completed the present invention.
That is, the liquid detergent composition for application of the present invention comprises: (a) an alkanolamine salt of oleic acid: 10 to 20.
% By weight (b) Chelating agent: containing 0.1 to 5% by weight, and its pH
Is from 8 to 12, and (c) further containing 1 to 5% by weight of a water-soluble solvent, so that the viscosity of the composition falls within the range of 20 mPa · s to 1000 mPa · s in the temperature range of 5 ° C to 30 ° C. And a viscosity ratio according to temperature (viscosity at 5 ° C./viscosity at 25 ° C.) of 11 or less.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The alkanolamine in the alkanolamine salt of oleic acid as the component (a) includes:
Mono-, di- and triethanolamine can be used,
Of these, mono- or diethanolamine is preferred from the viewpoint of detergency. In addition to alkanolamine salts of oleic acid, alkali metal salts of oleic acid and saturated or unsaturated, linear or branched fatty acids of C ₈ to C ₂₂ such as lauric acid, myristic acid Also, components such as alkanolamine salts and alkali metal salts of fatty acids such as palmitic acid, stearic acid, arachidic acid, linoleic acid and arachidonic acid can be added within a range that does not impair the stability. The alkanolamine salt of oleic acid as the component (a) is blended in the composition of the present invention in an amount of 10 to 20% by weight, preferably 10 to 15% by weight. If the amount is less than 10% by weight, sufficient detergency cannot be obtained, while if it exceeds 20% by weight, the viscosity of the composition tends to increase and it is not economical.

As the chelating agent of the component (b), ethylenediaminetetraacetates, (N-hydroxyethyl)
Ethylenediaminetoluate, nitrilotriacetate, citrate, 1-hydroxyethane-1,1-diphosphonate and the like are used. Chelating agents preferred in terms of detergency are ethylenediaminetetraacetates,
Nitrilotriacetic acid salts, 1-hydroxyethane-1,1
-Diphosphonates. In particular, 1-hydroxyethane-1,1-diphosphonates are more preferable when it is desired to enhance the mud stain cleaning power. In addition, a polymer chelating agent can be added as needed. The chelating agent of the component (b) is incorporated in the composition of the present invention in an amount of 0.1 to 5% by weight, preferably 0.5 to 3% by weight. If the amount is less than 0.1% by weight, sufficient detergency cannot be obtained, while
If it exceeds 5% by weight, problems tend to occur in the stability of the composition.

As the water-soluble solvent of the component (c), a solvent in which ethylene oxide and propylene oxide are added to a lower alcohol or phenol is used. In particular, an alkylene glycol monohydrate obtained by adding ethylene oxide or propylene oxide to butanol is used. Butyl ether is preferred. The water-soluble solvent as the component (c) is blended in the composition of the present invention in an amount of 1 to 5% by weight, preferably 1 to 3% by weight, whereby the composition of the present invention can be adjusted to an appropriate viscosity range.

In the present invention, it is necessary that the composition has an appropriate viscosity within a temperature range at the time of use, the change in viscosity is less than a certain value, and the change in usability is small. The following points are required. (1) The viscosity at 5 ° C. to 30 ° C. is 20 mPa · s to 100
0 mPa · s. (2) The viscosity ratio depending on the temperature (the ratio of the viscosity at 5 ° C./the viscosity at 25 ° C.) is 11 or less. By satisfying the above conditions, it is possible to obtain coating properties that are easy to apply and that are substantially uniform over a wide operating temperature range.
The viscosity is a value measured at 12 rpm by a B-type viscometer. Although the composition of the present invention is balanced with water, if necessary, a nonionic surfactant such as alcohol ethoxylate or an anionic surfactant such as a sulfonate can be added to the composition. .

[0013]

According to the liquid detergent composition for application according to the present invention, oily dirt, mud dirt, stains and the like are mainly obtained by applying to a heavily soiled part and then washing it with a washing machine when cleaning textiles. It exhibits the easy-to-apply viscosity and sufficient application detergency necessary to effectively remove any dirt that actually matters in life, such as dirt. Rinsing with water after application can also effectively remove dirt without using a washing machine or other cleaning agents.

[0014]

EXAMPLES According to the composition tables shown in Tables 1 and 2 below,
A detergent composition was prepared and its viscosity was measured at 25 ° C and 5 ° C. The ionic acid salts in the table have alkanolamine contained in each composition as a counter ion. Each of the compositions of Examples 1 to 9 showed almost uniform and good coating performance at a use temperature of 5 to 30 ° C. On the other hand, the comparative example product was poor in solidification or coating performance.

[0015]

[Table 1]Table 1: Composition and viscosity of the examples Example 1 2 3 4 5 6 7 Composition wt (%) Oleate 10 12 12 12 12 12 12 Alkanolamine Monoethanolamine 10 − − − − − − Diethanolamine − 10 8 10 10 10 10 Chelating agent 1-hydroxyethane-1, 1 1 1 1 1 1 1 1 1-diphosphonic acid Water-soluble solvent Trialkylene glycol 22 3 − − − 2¹  Butyl carbitol---2-2- Phenoxyethanol----2-- Nonionic surfactant Emarex 707 *^Two− − − − − 3 3 EP15030 * ³ − − − − − − − − pH 11.4 9.8 9.8 9.8 9.8 9.8 9.8 Viscosity (mPas) *^Four  25 ° C 90 64 40 38 100 47 200 5 ° C 990 310 84 250 1000 150 580 Ratio (5/25 ° C) 11.0 4.8 2.1 6.6 10.0 3.2 2.9 * 1) An adduct of ethylene oxide (EO) with an average of 1 mol and propylene oxide (PO) with an average of 2 mol with respect to butanol. * 2) C₁₂Adduct of EO added to alcohol on average 7 mol * 3) C₁₃An adduct obtained by adding 15 mol of EO and 3 mol of PO on average to alcohol * 4) The viscosity was measured at 12 rpm using a B-type viscometer.

[0016]

[Table 2]Table 2: Composition and viscosity of Examples and Comparative Examples Example Example Comparative Example8 9 1 2 Composition wt (%)Oleate 13 13 10 12 Alkanolamine Monoethanolamine − − 10 −Diethanolamine 7 7 − 10 Chelating agent 1-hydroxyethane-1, 1 1 1 11-diphosphonic acid Water-soluble solvent Trialkylene glycol 22-¹  Butyl carbitol----Phenoxyethanol---- Nonionic surfactant Emarex 707 *^Two3 4 − −EP15030 * ³ 1 0 − − pH 9.5 9.5 11.4 9.8 Viscosity (mPas) *^Four  25 ℃ 130 270 Solidified 8000 5 ℃ 300 610 Solidified SolidifiedRatio (5/25 ° C) 2.3 2.3 − − * 1) An adduct of ethylene oxide (EO) with an average of 1 mol and propylene oxide (PO) with an average of 2 mol with respect to butanol. * 2) C₁₂Adduct of EO added to alcohol on average 7 mol * 3) C₁₃An adduct obtained by adding 15 mol of EO and 3 mol of PO on average to alcohol * 4) The viscosity was measured at 12 rpm using a B-type viscometer. Further, the effect of coating and cleaning by the composition of Example 2 in the composition table was confirmed and is shown in Table 3.

[0017]

Table 3: Detergency (rate) of Example 2 Application without application / washing machine washing application / rinse washing machine washing cleaning rate (%) EMPA104 26 14 5 Black clay 24 16 10 Black tea 20 17 3

Each stained cloth was used as a representative of the following stains. As a representative of oil stains, EMPA104 soil cloth (olive oil / carbon stain) As a representative of mud stains, black soil soil cloth (a horticultural black soil dispersed in water and prepared with a cotton knit cloth) As a typical example, black tea stains (prepared by baking cotton cloth in black tea put in boiling water) Washing machine washing is a method of washing a commercial detergent (super top) using tap water at 25 ° C. 10 using standard usage
For 3 minutes and rinsed with running water for 3 minutes.
Rinsing is a running rinse of running tap water at 25 ° C. for 3 minutes. The detergency was determined by the normal equation shown in the following equation 1 based on the change in reflectance before and after cleaning. Here, as the reflectance, a Z value measured by a color difference meter Z-90 manufactured by Nippon Denshoku was used.

[0019]

(Equation 1)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C11D 1:46 3:36 3:34)

Claims (1)

[Claims] (1) An alkanolamine salt of oleic acid: 10 to 20% by weight (b) A chelating agent: 0.1 to 5% by weight, and its pH
Is 8 to 12, and (c) further contains 1 to 5% by weight of a water-soluble solvent, so that the viscosity of the composition is 20 m in a temperature range of 5 ° C to 30 ° C.
And the viscosity ratio (viscosity at 5 ° C./viscosity at 25 ° C.) according to the temperature is 1 Pa · s to 1000 mPa · s.
A liquid detergent composition for coating, wherein the composition is 1 or less.