JPS6118958B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a polishing cleaning composition used for cleaning floors, furniture, kitchen utensils, and vinyl leather. Conventionally, in this field, nonionic, anionic, or a mixture of these cleaning agents have been used.
Phosphoric acid builders, water-soluble solvents, caustic soda, and the like were also used as auxiliaries to improve the cleaning effect. However, although these conventional cleaning agents were effective in removing oily or hydrophobic stains,
These conventional cleaning agents are less effective against stains that adhere to the surfaces of floors, furniture, kitchen utensils, etc., or stains that have dug into the interior of the surface, and these conventional cleaning agents do not require the removal of cleaning agent components after stain removal, ie, ``rinsing'' or ``rinsing''. It was not always satisfactory from both a performance and work standpoint. For example, vinyl tiles and vinyl asbestos tiles are used in offices,
It is often used as a flooring material in hospitals, etc. Conventionally, a resin wax is applied to this flooring material, and if you walk on it with rubber-soled shoes, you will notice scuff marks (hereinafter referred to as black heel marks) on the soles of your shoes. It digs into the inside of the wax film and remains black. It is difficult to wash off this stain with conventional detergents, so in this case, it is removed together with the resin wax using a detergent containing cellosolves called "removal agents", then wiped off afterwards, and waxed again after the floor is dry. It was necessary to perform The object of the present invention is to provide a cleaning agent that can easily remove stains such as black heel marks without requiring such troublesome cleaning work. The applicant of the present invention has filed a patent application (see Japanese Patent Application No. 55-119865 and Japanese Patent Publication No. 59-555) regarding a cleaning composition that achieves the above object. It was found that the film formed after cleaning did not have sufficient water resistance, causing problems when used on floors that were frequently wiped with water. The present invention was made as a result of research conducted to solve this problem, and by setting the polymer and molecular weight, which are the main components of the cleaning agent, to specific values, cleaning performance and water resistance can be improved. We were able to obtain a cleaning agent that was excellent in all respects and also had a good gloss effect. The polishing cleaning composition of the present invention is an aqueous solution containing 6 to 24 percent by weight of a polymer having the following structural formula and having a weight average molecular weight of more than 8,000 and less than 45,000 and having a pH of 6.5 to 10. . (In the formula, M is another vinyl monomer to be addition-copolymerized if necessary, R ₁ is hydrogen or an alkyl group having 1 to 3 carbon atoms, R ₂ is an alkyl group having 1 to 8 carbon atoms, and an acid value of the polymer) Hydrogen required to make 70 to 650 mg KOH per gram,
m and n represent positive numbers necessary to make the weight average molecular weight of the polymer more than 8,000 and less than 45,000. ) In the above polymer, the monomers are randomly bonded. Examples of the monomer of the present invention include methacrylic acid methyl ester, acrylic acid butyl ester,
Methacrylic acid, acrylic acid, etc., and if necessary, vinyl monomers such as acrylonitrile, vinyl acetate, styrene, etc. can be used as a copolymer.
Moreover, the acid value is adjusted by the amount of acrylic acid or methacrylic acid. The polymerization method is carried out by a conventional solution polymerization method, bulk polymerization method, suspension polymerization method, or emulsion polymerization method. It is also effective to use a chain transfer agent to adjust the molecular weight. Examples of the chain transfer agent include mercaptans and halogenated carbons, such as dodecyl mercaptan, lauryl mercaptan, carbon tetrachloride, and bromotrichloromethane. Molecular weight varies depending on polymerization conditions, but is roughly determined by the molar ratio of chain transfer agent and monomer.
2870116, U.S. Patent 2870117, Patent Application Publication 1970-
14019 etc. Another method of adjusting the molecular weight is by adjusting the polymerization temperature, the concentration of the polymerization initiator, and the type of solvent for solution polymerization, as exemplified in Japanese Patent Application Publication No. 54-64532. If the polymer obtained in this way contains a large amount of chain transfer agent and has a strange odor, or if there are problems such as contamination with solvents or residual monomer odor, it is necessary to remove these. These can be almost completely removed by azeotropic removal with water, steam distillation, vacuum distillation, or the like. The molecular weight of the polymer thus obtained can be easily measured by gel permeation chromatography (GPC method). The resulting polymer has carboxyl groups neutralized with ammonium, amines, or amino alcohols to form a salt, exhibiting water solubility and dissolving in water, and exhibiting a pale yellow or white transparent or translucent appearance. When a water-soluble version of this polymer is applied to the surface of an object, the volatile components are dried and removed, leaving a glossy film. Next, even if dust or oil adheres to this film, such dust or oil can be easily removed by wiping it lightly with an aqueous solution of this polymer. The removal mechanism is thought to be achieved by the following mechanism. Dust or oil that has adhered to the surface of an object previously coated with the polymer of the present invention can be removed by soaking this polymer aqueous solution into a mop or the like and gently wiping it to remove ammonia, amines, amino alcohols, etc. contained in the polymer aqueous solution. This reacts with the carboxyl group of the coating film and turns into a salt of the carboxyl group, causing the coating film to re-dissolve, and the dirt stuck to the coating film is dissolved together with the coating film and wiped off with a mop, etc., and the dirty polymer and new polymer are separated. It is believed that when the coating is replaced and dried, a coating film with good gloss from which dirt or oil has been removed remains. For the coating film obtained in this way to have water resistance, the molecular weight must exceed 8000 in terms of weight average molecular weight.
It must be 45,000 or less (hereinafter, molecular weight refers to weight average molecular weight). When the molecular weight is less than 8,000, it has excellent detergency and gloss, but is significantly inferior in water resistance, while when the molecular weight exceeds 45,000, it has excellent water resistance and gloss, but has poor detergency. Significantly inferior. In order to achieve the object of the present invention, the effect can be further enhanced by adding other auxiliary agents to the solution of the polymer of the present invention. In order to further improve the cleaning performance, it is preferable to raise the pH to 9 or above with ammonia or morpholine, but if the pH exceeds 10, the ammonia odor or amine odor will be strong and may cause problems in use.
Furthermore, water-soluble solvents (e.g., butyl cellosolve, butyl carbitol, N-methylpyrrolidone, etc.) may be added to provide additional detergency, and other conventional nonionic surfactants (e.g., nonylphenol ethylene oxide adducts), anionic activators (e.g. sodium dodecylbenzenesulfonate, etc.), phosphoric acid-based activators (e.g. sodium polyphosphate, etc.), fluorine-based surfactants (e.g. U.S. patent
2937098), caustics (for example, sodium hydroxide, etc.), etc. may also be added.
In addition, to further increase water resistance, polyvalent metal complex salts (e.g. ammine complexes of zinc carbonate, amino acid complexes of zinc, etc.), crosslinking agents capable of crosslinking with carboxyl groups or hydroxyl groups (e.g. polyaziridine compounds, water-soluble epoxy compounds, etc.) are also used. You can also add it. Furthermore, high boiling point water-soluble solvents (for example, ethyl carbitol, etc.) may be added to further impart gloss to the coating film. For the purpose of preventing the adhesion of dirt,
Waxes (for example, emulsions of polyethylene wax, etc.) may be added. Acrylic emulsion polymers, rosin-modified maleic acid resins, styrene maleic acid resins, water-soluble acrylic resins (molecular weight less than 8,000 or more than 50,000), antifoaming agents, etc. may also be added for various other purposes, but the minimum It is better to keep it at that. By using the cleaning agent of the present invention configured as described above, there is no need for post-wiping, drying of the floor surface, and re-waxing, which are required when using conventional cleaning agents containing a stripping agent. Heel marks etc. can also be easily removed. When the water in the composition of the present invention evaporates, a polymeric film is formed on the treated floor surface, giving it not only an excellent gloss but also a water-resistant surface that can withstand frequent wiping. This results in a clean finish, and there is no need to apply wax again, greatly simplifying the cleaning process. Next, the results of tests conducted on representative examples will be described. The compositions in the following description are in parts by weight unless otherwise specified. Polymer Nos. 1 to 4 in Table 1 and Reference Example A,
Water and various additives listed in Table 2 were sequentially added to the polymer B and mixed using a stirrer to obtain Samples 1 to 4 and Reference Samples A and B.

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[Front] Manufactured by San Nopco Co., Ltd.

Claims (1)

[Scope of Claims] 1. A polishing cleaning composition containing 6 to 24 percent by weight of a polymer having the following structural formula and having a weight average molecular weight of more than 8,000 and less than 45,000, and made into an aqueous solution with a pH of 6.5 to 10. . However, in the formula, M is another vinyl monomer to be addition-copolymerized if necessary, R ₁ is hydrogen or an alkyl group having 1 to 3 carbon atoms, and R ₂ is an alkyl group having 1 to 8 carbon atoms and an acid value. Hydrogen required to make 70 to 650 mg KOH per gram of coalesce, m and n are the weight average molecular weight of the polymer 8000
Represents the positive number necessary to exceed 45,000 and be less than 45,000.