JP3468791B2 - Anti-algal and anti-fungal coating composition for ground-based construction - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to
The present invention relates to an anti-algal and anti-fungal coating composition for preventing molds and algae that adhere to and grow on the surface of buildings on the ground such as a freezer warehouse, a house, an apartment, a cooling tower, and a bridge for a long period of time. Therefore, the present invention can be effectively used in the architectural field, for example, a building on the ground. [0002] There are various molds and algae in nature. For example, molds such as Aspergillus, Penicillium, and Cladosporium, and algae such as Chlorococcum, Trentporia, and Nostock often grow on outer walls of buildings. [0003] These molds and algae adhere to and grow on the surface of the building, and for example, adversely affect the building by impairing the appearance of the building surface, deteriorating the coating film, and causing cracks. Exert. Further, in a cooling tower or the like, the growth of algae and molds causes clogging of pipes and a decrease in cooling efficiency. On the other hand, the active ingredient of the present invention, pyridine-
Triphenylborane (hereinafter, referred to as “Compound A”)
It is known as an antifouling component of underwater antifouling paints (US Pat. No. 3,111,679). The other active ingredient, 3- (3,4-dichlorophenyl) -1,1-
Dimethylurea (hereinafter, referred to as “compound B”) is a herbicide that is absorbed from the foliage or roots of a weed and accumulates in the leaves to exhibit herbicidal activity by inhibiting photosynthesis (Agricultural Chemical Handbook, 1992, 1992. On July 30, the Japan Plant Protection Association issued a
223874) and a seaweed growth promoter (Japanese Unexamined Patent Publication No.
No. 123710). [0005] However, it has not been known to use a mixture of two kinds of compounds A and B as an anti-algal and anti-fungal coating composition for above-ground construction. [0006] In order to prevent microbial deterioration of molds and algae in ground structures such as buildings and cooling towers, these microorganisms are to be prevented in a long-term and eradication manner. It must be a composition. However, conventionally used drugs are not always sufficient in terms of toxicity and effect. For example, organotin compounds or other metal compounds which are useful from the viewpoint of effectiveness are highly toxic, and less toxic drugs do not have sufficient antialgal and antifungal effects in terms of residual activity. Compounds A and B, which are the active ingredients of the present invention, both have such disadvantages in terms of their effects, and therefore are difficult to use alone. Accordingly, the present invention has high safety in place of the conventional anti-algal and fungicide agents, and can prevent the generation of molds and algae for a long period of time by eradication, thereby deteriorating buildings or cooling towers or deteriorating their functions. It is an object of the present invention to provide a novel anti-algal and anti-fungal coating composition of a novel ground-based construction which is highly safe. Means for Solving the Problems The inventors of the present invention have tried various drugs to achieve the above-mentioned object, and have studied diligently. As a result, a mixture of two kinds of compounds A and B represented by the following chemical structural formulas is blended into a paint as an active ingredient and used as an anti-algal and fungicide paint for exteriors of ground-based structures, etc. It was found to be effective and to meet the above purpose. Compound A: pyridine-triphenylborane Compound B: 3- (3,4-dichlorophenyl) -1,1-dimethylurea That is, the gist of the present invention is as follows.
An anti-algal and anti-fungal coating composition for a ground-based construction, comprising pyridine-triphenylborane and 3- (3,4-dichlorophenyl) -1,1-dimethylurea as active ingredients. The coating resin used in the anti-algal and anti-fungal coating composition of the ground construction of the present invention is one of substrates for forming an anti-algal and anti-fungal coating film, and is used in conventional coatings. Can be used as well. Such examples include, for example, vinyl chloride-vinyl acetate copolymers, vinyl chloride-vinyl isobutyl ether copolymers, styrene-butadiene copolymers, chlorinated rubber resins, chlorinated polypropylene resins, petroleum-based Resin, alkyd resin, acrylic resin, phenolic resin, synthetic rubber, epoxy resin,
Silicon rubber, silicon-based resin, Teflon-based resin, rosin resin, and the like can be given. In the anti-algal and anti-fungal coating composition of the ground construction of the present invention, the compounding amount of the compound A and the compound B is 0.1 to 350 parts by weight, preferably about 1 to 100 parts by weight of the coating resin. ~ 150 parts by weight is suitable. The compounding ratio of the compound A to the compound B is not particularly limited, but is 1 to 90 or 9
It can be mixed at a ratio of 0 to 1. Further, the plasticizer is desirably compounded in an amount of 20 parts by weight or less per 100 parts by weight of the resin for coating. The anti-algal and anti-fungal coating composition of the above-mentioned ground construction according to the present invention may be, if necessary, provided with a coloring material (for example, titanium white, redwood, carbon, cyanine blue, cyanine green, etc.) or an extender pigment (for example, talc, barita, etc.). , Zinc white, etc.), and water or an organic solvent can be used to adjust the viscosity of the paint. The type of the organic solvent used is not particularly limited as long as it can dissolve or disperse the coating resin or each component. For example, water, alcohols (methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, ethylene glycol, benzyl alcohol, etc.), aromatic hydrocarbons (benzene, toluene, xylene, ethylbenzene, chlorobenzene, cumene, methyl) Naphthalene, etc.), halogenated hydrocarbons (chloroform, carbon tetrachloride, dichloromethane, chloroethylene, trichlorofluoromethane, dichlorodifluoromethane, etc.), ethers (ethyl ether, ethylene oxide, dioxane, tetrahydrofuran, etc.), ketones ( acetone,
Methyl ethyl ketone, cyclohexanone, methyl isobutyl ketone, etc.), esters (ethyl acetate, butyl acetate, ethylene glycol acetate, amyl acetate, etc.), nitriles (acetonitrile, propionitrile, acrylonitrile, etc.), sulfoxides (dimethylsulfoxide, etc.), alcohol Ethers (ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, etc.), amines (ethylamine,
Dimethylamine, triethylamine, isobutylamine, etc.), aliphatic or alicyclic hydrocarbons (n-hexane, cyclohexane, etc.), industrial gasoline (petroleum ether, solvent naphtha, etc.) and petroleum fractions (paraffins, kerosene, gas oil) Etc.). In the formulation of the anti-algal and anti-fungal coating composition of the above-mentioned ground construction of the present invention, a surfactant is used for the purpose of emulsification, dispersion, wetting, foaming and spreading. Examples of such surfactants include the following, but are not limited to only these examples. Nonionic type (polyoxyethylene alkyl ether, polyoxyethylene alkyl ester, polyoxyethylene sorbitan alkyl ester, sorbitan alkyl ester, etc.), anionic type (alkylbenzene sulfonate, alkyl sulfosuccinate, alkyl sulfate, polyoxyethylene) Alkyl sulfates, aryl sulfonates, etc.), cationic [alkylamines (laurylamine, stearyltrimethylammonium chloride, alkyldimethylbenzylammonium chloride, etc.)], amphoteric (betaine) sulfates, etc. Alcohol (PVA), carboxymethylcellulose (CMC), gum arabic, polyvinyl acetate, gelatin, casein, Gin sodium, various adjuvants such as titanium oxide can be used. The anti-algal and anti-fungal coating composition of the ground construction of the present invention can exert a sufficient effect even when two kinds of compound A and compound B are used as active ingredients. Antifungal and algal inhibitors such as 2- (4-thiazolyl) benzimidazole, parachloromethaxylenol, benzyl bromoacetate, 2,3,5,6-tetrachloro-4-methylsulfonylpyridine, N-dimethyl-N '
-Phenyl- (N'-fluorodichloromethylthio) -sulfamide, 1,2-benzisothiazolin-3-one, 2,4,5,6-tetrachloroisophthalonitrile, 2,6-dichlorobenzonitrile, 2-methyl -4
-Isothiazolin-3-one, manganese ethylenebisdithiocarbamate, zinc dimethyldithiocarbamate, 4,5-dichloro-2-n-octyl-3 (2
H) Isothiazolone, 2-pyridinethiol-1-oxide (zinc salt), tetramethylthiuram disulfide, 2,4,6-trichlorophenylmaleimide, 3-
Iodo-2-propargyl butyl carbamate, diiodomethyl paratolyl sulfone, bisdimethyldithiocarbamoyl zinc ethylenebisdithiocarbamate, phenyl (bispyridine) bismuth dichloride, 4-chlorophenyl-3-iodopropargyl formal, 1,
2-dibromo-2,4-dicyanobutane, N- (trichloromethylthio) -4-cyclohexane-1,2-dicarboximide, 2- (methoxycarbonylamino) benzimidazole, dodecylbenzenesulfonic acid, parachloromethcresol , 2- (4-thiocyanomethylthio) benzothiazole, 2-methylthio-4,6-bis (ethylamino) -s-triazine, 2,4-dichlorophenoxyacetic acid, 2-methylthio-4-tert-butylamino One or two of -6-cyclopropylamino-s-triazine and salts or esters thereof may be used in combination. In addition, these antifouling and antifungal agents are described in the aforementioned "Agrochemical Handbook 1992 Edition" and "Encyclopedia of Antibacterial and Antifungal Agents" (edited by the Publication Committee of the Encyclopedia of Antifungal and Antifungal Agents, August 22, 1986; Compounds published by the Society of Antifungal Society). Hereinafter, the present invention will be further described with reference to examples. Example 1 Acrylic resin emulsion 40.0 parts (solid content: 50% by weight) Titanium oxide 35.0 parts Sodium dodecylbenzenesulfonate 4.0 parts Xanthan gum 0.5 parts (RHODOPOL23, Rhone Compound A 0.5 part Compound B 0.5 part Water 19.5 parts A mixture of each of the above components was uniformly dispersed to obtain a coating material of Example 1. The composition of Example 2 was prepared in the same manner as in Example 1. Table 1 shows the compositions of Comparative Examples 1 to 8 prepared in the same manner as in Example 2 and Examples 1 and 2 and subjected to comparative tests. [Table 1] Paint formulation Test Example 1 On the northern concrete wall of a building, 5 cm × 20 in one section
The paints of Example 1 and Comparative Examples 1 to 4 and 8 were applied to an area of 1 cm. Investigations were conducted at 6, 12, 18 and 24 months after application, and the growth area of molds, algae and other microorganisms on the coating film was measured, and the anti-algal and anti-fungal effect was measured. (%) Was calculated by the following equation. Table 2 shows the results. ## EQU1 ## [Table 2] Test Example 2 The paints obtained in Example 2 and Comparative Examples 5 to 8 were applied to a thickness of about 50 μm on an entire surface of an undercoat coated on an iron plate having a size of 20 cm × 4 cm and dried at room temperature, and dried at room temperature. After that, it was installed on the surface of the cooling tower where water was splashed. The survey was conducted at 6, 12, 18 and 24 months after the installation, and the growth areas of molds, algae and other microorganisms on the coating film were measured. The anti-algal and anti-fungal effect (%) was calculated. Table 3 shows the results. [Table 3] When the anti-algal and anti-mold coating composition of the present invention is applied to the exterior of a building such as a building or a cooling tower, it is possible to prevent the adhesion of fungi or algae for a long period of time. The anti-algal and anti-fungal effects and the duration of the active ingredient are superior to those of the active ingredient used alone in the present invention. The active ingredient of the present invention has low toxicity to humans and animals and can be used with confidence. Accordingly, the present invention is useful as an anti-algal and anti-fungal coating composition for above-ground structures such as buildings and cooling towers.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-223874 (JP, A) JP-A-4-353568 (JP, A) JP-B-39-28579 (JP, B1) US Patent 3211679 (US , A) (58) Field surveyed (Int. Cl. ⁷ , DB name) C09D 5/14 C09D 5/16 A01N 47/30 A01N 55/08

Claims (1)

(57) [Claims 1] Pyridine-triphenylborane and 3-
(3,4-dichlorophenyl) -1,1-dimethylurea as an active ingredient, an anti-algal and anti-fungal coating composition for ground-based construction