JP2009057529A - Detergent for exterior wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To develop a safe, environmentally friendly, inorganic detergent free of conventionally used toxic substances which are subject to regulation under the Act on the Evaluation of Chemical Substances and Regulation of Their Manufacture, etc. <P>SOLUTION: The detergent which is excellent in detergency, is harmless to humans and causes no environmental pollution is successfully developed by using a neutral salt of a fluoride, which is a non-toxic substance free from regulation under the Act on the Evaluation of Chemical Substances and Regulation of Their Manufacture, etc. A complex compound formed between the neutral salt and a weak acid comprising an organic acid is used as the inorganic detergent. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a cleaning agent that is exposed to wind and rain for a long time and is weathered and dirty, such as dirty outer walls, tiles, sidewalks, outer walls of structures, toilets in houses, bathrooms, kitchens, and the like. Conventional cleaning agents cannot remove stubborn stains due to inorganic deposits and adhesion with ordinary detergents, that is, surfactants. As inorganic cleaning agents, cleaning agents have been used for mineral acids such as hydrochloric acid, nitric acid, sulfuric acid and hydrofluoric acid. The present invention relates to cleaners that are milder and more environmentally friendly and human-friendly than those mineral acids.

  As the cleaning agent, organic surfactants mainly composed of petroleum hydrocarbons are predominantly used, but mineral-based cleaning agents are mainly used for inorganic contaminants. The dirt from weathering of outer wall tiles, toilet urine seats, tombstones, mold growth in kitchens and bathrooms, and stubborn contamination with reds cannot be cleaned with organic detergents. Mineral acid detergents have been used to remove these stains. Mineral acid cleaning agents are mainly hydrochloric acid, nitric acid, sulfuric acid, hydrofluoric acid, etc., and they belong to powerful poisons, and their use was not good for human body and environment.

  The problem to be solved is not to use the mineral acid that is a poisonous deleterious substance that has been used until now, but also to use chemical substances that are friendly to humans and the environment, without using chemical poisonous deleterious substances, The purpose is to develop higher performance cleaning agents than ever before. Even when the outer wall was washed away, it was able to wither plants and prevent contamination and damage from deleterious substances, and prevent damage and damage caused by adhesion to the human body. Conventional cleaning agents can be discolored, peeled, corroded, or altered when they come into contact with aluminum sashes, glass, metal, plastics, etc., and claims have not been able to withstand.

  Conventionally used hydrochloric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid, and acid ammonium fluoride are designated as chemical poisonous and deleterious substances and are subject to legal restrictions in handling, and strict care has been required for their handling. The present invention makes this handling easy. The present invention is intended to solve the problem by increasing the detergency without using the chemical poisonous or deleterious substance defined by this law.

Means for Solving the Invention

  The present invention comprises a mixture of a neutral salt and a weak acid mainly composed of an organic acid without using a designated poisonous or deleterious substance. Therefore, the main component of the cleaning agent is a non-toxic deleterious substance, which is the neutral salt of chrysonite (aka bauxite), sodium fluoride (aka sodium fluoride), lithium fluoride, neutral ammonium fluoride, fluoride. Potassium chloride and the like. There are many fluoride salts that are hardly soluble in water, but they can be dissolved by using a complex compound while heating with a polyvalent carboxylic acid. Neutral ammonia fluoride is obtained by neutralizing hydrofluoric acid with ammonia to PH of 7. Addition of ammonia may facilitate complex formation.

  Furthermore, in order to enhance the cleaning effect, the cleaning effect is improved by adding weak acids or organic acids such as citric acid, tartaric acid, succinic acid, malic acid, hydroxyacetic acid, adipic acid, aminosulfonic acid, sulfamic acid, etc. Can be raised. In particular, the combination of a neutral fluoride and a polycarboxylic acid having a hydroxyl group forms a complex compound with the fluoride, so the effect is outstanding. The weak acid at k here refers to sulfamic acid or ammonium phosphate neutralized with weak alkali. This complex is weakly acidic, has a particularly strong detergency, is gentle to the human body, and does not pollute the environment. Moreover, since this cleaning agent is an aqueous solvent, it can be easily formulated and handled easily.

The invention's effect

  With the cleaning liquid of the present invention, even when the outer wall is scattered around the outer wall, the plant can be withered, contamination and damage caused by deleterious substances can be prevented, and damage and damage due to adhesion to the human body can be prevented. Conventional cleaning agents can be discolored, peeled, corroded, or altered when they come into contact with aluminum sashes, glass, metal, plastics, etc., and claims have not been able to withstand. The present invention has solved these various serious problems.

  In the present invention, it is necessary to avoid the use of poisonous and deleterious substances. First, the main agent is dissolved in water, such as chrysonite, lithium fluoride, sodium fluoride, aluminum fluoride, potassium fluoride, etc. It can be dissolved by adding an organic acid such as citric acid, malic acid, hydroxyacetic acid, etc. In particular, an organic acid having two or more carboxylic acids and a fluoride salt form a complex and thus have a good cleaning effect.

  The raw material fluoride salt used is 3 to 15%, and the organic acid may be prepared by dissolving 5 to 20% in water. Further, when neutral ammonium fluoride is added 3 to 5% catalytically, the effect is further improved. Thus, the cleaning liquid obtained by blending becomes a cleaning solution that is very mild, does not pollute the environment, is gentle to the human body, has no irritating odor as in the past, and has excellent cleaning power.

  Hereinafter, the embodiment will be specifically described. However, the present invention is not limited to the matters described here.

50 g of chrysonite (NaF.AlF ₃ ) and 100 g of malic acid are dissolved in 1 little water and heated to 80-90 ° C. to dissolve. Furthermore, the solution in which 50 g of citric acid was dissolved was able to remove the stubborn stains on the old exterior wall tiles where the plaque was deposited.

  In 1 liter of water, 60 g of sodium fluoride, 60 g of tartaric acid, 20 g of hydroxyacetic acid are dissolved by heating to 60 ° C., and 3 g of carboxycellulose is added as an anti-sagging solution. Excellent cleaning effect.

  The cleaning agent obtained by adding 60 g of potassium fluoride, 50 g of sulfamic acid, and 20 g of itaconic acid to 1 liter of water has been very difficult for cleaning soiled substrates.

  The cleaning liquid obtained by adding 60 g of bauxite, 60 g of dibasic ammonium phosphate and 50 g of itaconic acid to 1 liter of water was optimal for removing soiled acrylic lysine paint.

  A solution obtained by adding 45 g of chrysonite, 30 g of potassium fluoride, 35 g of 28% ammonia water, and 65 g of sulfamic acid to 1 liter of water and heating and stirring for 11 hours showed good detergency.

Claims (2)

  The main ingredient is an aqueous solution containing 3 to 20% of a mixture of two or more kinds of compounds mainly composed of fluoride salts of nontoxic deleterious substances in the Chemical Substances Control Law, and 3 to 3 weakly acidic compounds mainly composed of organic acids. A cleaning agent comprising an aqueous solution containing 15%.   An inorganic detergent characterized by comprising 3 to 20% of a mixture of a non-toxic deleterious fluoride salt or a single substance in the Chemical Substances Control Law as a main ingredient and 3 to 15% of a weakly acidic compound.