JP2006051614A - Persimmon tannin/citric acid composition which contributes to enhancement of ant-proof capacity of wood, and execution method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ant-proof agent comprising a composition constituted of a natural material and a food raw material in the enhancement of the ant-proof capacity of wood. <P>SOLUTION: The composition constituted of persimmon tannin and citric acid is applied or blown to target wood to realize the enhancement of the ant-proof capacity of the wood. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention improves the ant-repellent performance by sufficiently infiltrating or spraying wood with an aqueous solution obtained by mixing a certain amount of a persimmon astringent liquid extracted and collected from persimmon astringent and citric acid of organic acids. Is a feature.

Both the antiseptic and waterproofing performances can be improved by fixing the above-mentioned mixed aqueous solution of persimmon juice and citric acid to the surface of wood.

In improving the ant protection of wood, tar-based creosote oil, phenol-based bentachlorphenyl laurate, triprolphenol, quinoline-based B-oxyquinoline agent, naphthenic acid-based naphthenic acid agent, organotin-based tryptyltin oxide , Organic iodine chlorophenyl, iodopropargyl formal, chromium / copper / arsenic, phenol fluorine, borax / boric acid, etc. The impact on the environment was a challenge.

Constructed from substances that are harmless to the human body, such as the present invention, such as persimmon astringent natural ingredients that have been used in coating materials since ancient times, and citric acid used as food ingredients and seasonings There was no ant protection.

From the current state of the art, the present invention has been developed in order to improve the ant protection performance of wood. Another object of the present invention is to provide an anti-anticide comprising a mixed composition of citric acid, which is a food material. And it is further imparted to the improvement of antiseptic and durability.

According to the present invention, an improvement in ant-proofing performance can be realized by applying and spraying a composition obtained by mixing a certain amount of natural amber astringent and citric acid, which is a raw material of food, onto a wood. Persimmon astringents have been used as a preservative and waterproofing agent since ancient times in Japan. Citric acid is an eating disorder substance for termites, and the composition is applied to and sprayed on wood to adhere and penetrate the wood surface, and the citric acid is fixed by astringency.

In the detailed description of the present invention, the application and application range are shown correctly. Further, the type, shape, form, etc. of the wood are not limited in the detailed description of the present invention.

In the ant-control composition of the present invention, the astringent astringent is water-soluble, does not change with temperature changes, and maintains its quality even at a high temperature of 250 ° C. The chemical property is a polymer condensate composed of tannins such as catechin gallate, gallocatechin gallate, and catechin and having a molecular weight of about 15,000, and becomes plasticized in an air-dried state. In addition, as a conventional method of using astringent shibu, it has been used for reinforcement of materials, antiseptic, and waterproofing by applying to bamboo, paper, fish net, cloth and wood. At present, removal of formaldehyde as a sick house substance, removal of odorous substances such as ammonia, trimethylamine, and nicotine has been chemically revealed.

Citric acid in the termite-proofing composition of the present invention is a crystalline organic acid, which is weak in acidity and about 1/3 of acetic acid, and is a substance contained in dried plums, lemons and the like. Currently, starch is used as a raw material, and this is fermented. Appearance is white or colorless crystals, has a molecular weight of 210, a melting point of 130 to 150 ° C., and a high solubility in water: 60% at 20 ° C. and 80% at 100 ° C. This citric acid is beneficial to humans, but it is an eating disorder for termites.

The characteristics of the persimmon and citric acid composition will be described in detail. By applying and spraying on the wood, the surface of the wood is infiltrated into the wood, and further air-dried, so that citric acid is recrystallized and the persimmon is made into plastic. From the above, it is possible to prevent the outflow and divergence of citric acid effective for ant-proofing properties, and to keep the ant-proofing effect on wood for a long time.

Crystalline organic acids that are harmless to citric acid are ascorbic acid, aspartic acid, glutamic acid, aconitic acid in citric acid cycle, isocitric acid, α-ketoglutaric acid, succinic acid, fumaric acid, malic acid, oxaloacetic acid Is effective, but citric acid is most suitable as an inexpensive and stable organic acid.

As a substitute for astringent astringent materials, any natural polymer such as chitosan, chemical water-soluble paraffin, water-soluble silicon, etc. can be used as long as it is a polymer that can be plasticized in an air-dried state, but it does not cause environmental impact Because it is optimal, the astringency is good. The natural ingredient chitosan is also a promising substance, but it is very expensive at present, so it cannot be said that it is suitable as a composition for wood ant protection at present.

In the composition of persimmon astringent and citric acid of the present invention, a mixing ratio of 2 to 15% citric acid is effective per 1 part by weight of persimmon astringent, but 6% is optimal as an effective and economical mixing ratio. .

The method of applying the ant control agent by the strawberry astringent and citric acid composition of the present invention may be applied to or sprayed on the target wood. Specifically, in an existing wooden building, the entire underfloor timber is sprayed with a commercially available sprayer. It ’s fine. The construction period is preferably around May when the weather is stable, and it is desirable to perform construction twice or three times after the initial spraying. In addition, construction by professionals is not necessary, because it is a mixture of persimmon and citric acid, so it does not affect safety and the environment. From the above, there is no problem even if it diffuses in the lower part under the floor, and it gives to the ant protection performance.

Claims (1)

Applying and spraying a certain amount of an aqueous solution containing tannins and citric acid in a certain ratio in the ant protection and durability of wood, and applying it to the wood, it does not place an impact on the human body. Harmless and citric acid composition and construction method characterized by being harmless and imparting a healthy living environment.