JPS63309596A - Liquid detergent composition for hard surface - Google Patents

Abstract

PURPOSE:To obtain the title composition which prevents the occurrence of water spots, gives excellent washed finish, and is useful for washing a hard surface of, e.g., tableware, by using a surface active agent and a polystyrenesulfonic acid (salt) as its essential constituents. CONSTITUTION:The title composition is prepared by mixing at least 10wt.% surface active agent preferably comprising an anionic or nonionic surface active agent (e.g., sodium n-dodecylbenzenesulfonate); at least 0.3wt.% polystyrenesulfonic acid (salt) having a molecular weight of 3,000-1,000,000, obtained by sulfonation of PS with a sulfonating agent followed by neutralization, if required, with an alkaline reagent; a lower alcohol, a polyhydric alcohol, a hydrotrope, a perfume, a coloring matter, etc. as required; and the balance of water.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid cleaning composition used for cleaning hard surfaces such as tableware.

After cleaning used tableware with a detergent, rinsing it with water, and drying it, it is often seen that spots or films called water spots remain and spoil the original luster of the tableware. As for the cause of this.

In addition to insufficient cleaning, it is thought that the hardness of the rinsing water is high. When rinsing with hard water, the salt contained therein adheres to and remains on the surface of the tableware, forming water spots or a film.

When water spots are formed, it gives the impression that dirt remains even though the dirt has been completely removed, giving an unfavorable appearance.

The following cleaning agents have been proposed for the purpose of preventing water spots.

None of these were still satisfactory, and further improvements were desired.

■ Detergent containing specific gelatin (Japanese Patent Application Laid-open No. 4
9-94701, JP-A-50-46709) Cleaning agent containing quaternary ammonium, polyethylene oxide/polypropylene oxide copolymer, and specific water-soluble compounds (JP-A-50-72908) A cleanser containing an anionic surfactant and a polypeptide of a specific molecular weight (JP-A-50-157404) ■ A cleanser containing an abrasive (JP-A-50-70411) ■ A cationic modified starch and an anionic surfactant (Japanese Unexamined Patent Publication No. 54-87709) The present invention aims to improve water spot prevention in a liquid hard surface cleaning composition.

The liquid hard surface cleaning composition of the present invention is characterized by containing the following components (a) and (b).

(a) 10% by weight or more of surfactant.

(b) Polystyrene sulfonic acid or its salt 0.3
weight% or more.

The present invention will be explained in more detail below.

The surfactant component (,) serves as the main cleaning active ingredient in the liquid hard surface cleaning composition, and is incorporated in the composition in an amount of 10% by weight or more, preferably 15 to 25% by weight.

Examples of the surfactant include anionic surfactants, nonionic surfactants, and amphoteric surfactants, with anionic surfactants and nonionic surfactants being particularly preferred. Specific examples of anionic surfactants include the following.

(1) Higher alkyl polyoxyethylene ether sulfate salt: Preferably, the alkyl group has 8 to 16 carbon atoms (
In particular, 11 to 14), the average number of added moles of ethylene oxide is 1 to 4 (2) Higher alkylbenzene sulfonate: preferably a linear alkyl group having 8 to 5 carbon atoms (3) α-olefin sulfonate: preferably Carbon number 10-20 (especially 1
4-16) Counter ions for anionic surfactants include alkali metals such as sodium, alkaline earth metals such as magnesium,
Examples include organic bases such as alkanolamines.

As the nonionic surfactant, alkyl polyoxyethylene ether (preferably an alkyl group having 8 to 20 carbon atoms,
Examples include ethylene oxide (average number of added moles of 3 to 50), higher fatty acid alkanolamides, and alkylamine oxides having 8 to 18 carbon atoms.

The polystyrene sulfonic acid or salt of component (b) preferably has a molecular weight of 3,000 to 1,000,000, particularly preferably 5,000 to 70,000.

In addition, as counter ions, sodium, potassium, ammonium, monoethanolamine, jetanolamine, triethanolamine, etc. are preferable, and calcium,
Magnesium etc. can also be used.

Polystyrene sulfonic acid or a salt thereof can be produced, for example, by directly sulfonating polystyrene using a sulfonating agent such as sulfuric acid, sulfuric anhydride, or fuming sulfuric acid, and then separating unreacted polystyrene, or by subsequently sulfonating polystyrene with water. It can be obtained by neutralizing with an alkaline agent such as sodium oxide or calcium hydroxide.

(b) component polystyrene sulfonic acid or its salt,
It is incorporated into the liquid detergent composition in an amount of 0.3 wt.

In addition to the above-mentioned essential components, the liquid hard surface cleaning composition of the present invention may contain other optional components as needed and be balanced with water. These optional ingredients include lower alcohols such as ethanol and isopropanol, ethylene glycol,
Polyhydric alcohols such as glycerin, hydrotropes such as toluene sulfonate, urea, benzoate, fragrances, pigments, etc. are used.

According to the present invention, the occurrence of water spots can be effectively prevented by blending polystyrene sulfonic acid or its salt into a liquid hard surface cleaning composition containing a surfactant as a main cleaning active ingredient. It is possible to achieve excellent washing results.

The liquid cleaning composition of the present invention can be applied to glass, ceramics, metals,
It is suitable as a cleaning agent for hard surfaces such as washing plastic dishes and kitchen equipment such as sinks and refrigerators.

The present invention will be described in detail below, but prior to this, evaluation methods used in Examples will be shown.

(1) Number of water spots Apply 0.5g of butter to the inside of the glass tip, and after air-drying, scrub the inside 5 times and the outside 4 times using a sponge in a cleaning solution (cleaning agent concentration: 0.15%). . Rinse the washed glass tip three times with overflow tap water.

Further, after being immersed in a blue dye aqueous solution, it is dried at 105° C. for 4 minutes. After cooling, the number of water spots remaining inside the tip was counted visually. The same operation was performed on four glass chips, and the average value per glass was taken as the number of water spots.

(2) Number of dishes washed (cleaning power) Washing liquid with a capacity of 3Q, a concentration of 0.15%, and a liquid temperature of 25°C
In a 0cm vat, put a butter-stained dish (0.5g/1
Rub the front side of the sheet 5 times and the back side 3 times with a sponge,
Number of dishes that could be washed until the foam height of the washing liquid reached ll1lI.

Each liquid hard surface cleaning composition shown in Table 1 was prepared and evaluated for performance.

(Margin below)

Claims (1)

Claims: 1. A liquid hard surface cleaning composition comprising (a) 10% by weight or more of a surfactant and (b) 0.3% by weight or more of polystyrene sulfonic acid or a salt thereof.