JP2005287304A - Titanium dioxide photocatalytic light-shielding agent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a titanium dioxide photocatalytic light-shielding agent enabling optional setting of a light shielding period of time, and provided with odor eliminating, deodorizing, antibacterial and anti-virus effects. <P>SOLUTION: The titanium dioxide photocatalytic light-shielding agent comprises 5-60 wt.% of an anatase-type titanium dioxide having a particle size of 0.1-550 μm and efficiently exhibiting photocatalytic reaction with ultraviolet light, and contains either of polyvinyl acetate resin-based emulsion, or synthetic resin-based alkyd, acrylic, urethane or polyvinyl alcohol in its ingredient as a binder. The light shielding agent can be diluted with water such as ground water, running water or water in a water channel by about 2-100 times so as to be dispersed at the scene when used, and easily sprayed using a power sprayer or the like normally used at a farmhouse or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a photocatalytic light-shielding agent capable of lowering the internal temperature of facility houses, livestock houses, etc. by using titanium dioxide, decomposing odor components, and decomposing bacteria and viruses.

  Up until now, some horticultural horticultural farmers have been devised to protect crops from high temperature damage and sunburn at high temperatures in the summer, and to reduce the temperature inside the facility, from curtain materials to dionet materials and expensive glass greenhouses. In Japan, styrene foam is used. For simplicity, calcium powder, ceramic powder, titanium dioxide powder, white paint, etc. are used on the ceiling, roof, outer wall, etc. of facilities.

  Among the light shielding materials that are used in a simple manner, the type that dilutes the powder in water etc. in the field cannot be well dispersed in water etc. and will precipitate if not sprayed while stirring. There was a problem that the adhesive did not get used well and was easy to peel off due to rain. On the other hand, depending on the adhesive, there is a problem that the shading agent is not peeled off for a long period of time.

  Moreover, in the case of livestock farmers, at the time of high temperatures in summer, some kind of summer was in the state of not only from the body temperature of livestock animals but also ammonia gas from manure. As long as this situation continued, productivity from livestock animals was unavoidable, and pressured the management of livestock farmers.

Conventionally, there was a method of spraying inside the ceiling of the facility, etc., but when spraying, the crop inside the facility was covered with light shielding agent, etc., and on the ceiling, etc., the light shielding agent was long due to the humidity of the facility. There was also a problem of not having it.
JP-A-11-124546 JP 2001-286226 A Academic Publishing Center "Catalyst Chemistry with Light" Quarterly Chemistry Review No. 23, 1994 Akira Fujishima, Kazuhito Hashimoto, Toshiya Watanabe “Light Clean Revolution” Taiyo Printing 1997

  Problems to be solved are to arbitrarily set the light shielding amount and the light shielding period and to provide a deodorizing / deodorizing / antibacterial / antiviral effect.

  The present invention not only lowers the temperature by using titanium dioxide as a light-shielding agent, but also provides a deodorizing, deodorizing, antibacterial, and antiviral effect by utilizing a photocatalytic reaction, and a vinyl acetate resin emulsion as a binder -The light shielding period can be adjusted by using different types of synthetic resin alkyd, acrylic, urethane, and polyvinyl alcohol.

  By using the titanium dioxide photocatalytic light-shielding agent of the present invention, the temperature in the barn / house can be lowered by about 3 to 5 degrees, and deodorizing / deodorizing / antibacterial / antiviral effects are obtained.

  In the field where it is used, it can easily be diluted and dispersed about 2 to 100 times with water such as groundwater, tap water, and waterways, and can be easily sprayed with a power sprayer or the like normally used by farmers. To do.

Example 1 Five pieces of purified water are prepared in a 500 cc container, and 2 g each of vinyl acetate resin-based A emulsion, synthetic resin-based B alkyd, C acrylic, D urethane, and E polyvinyl alcohol are added and stirred to disperse. 10 g of anatase type titanium dioxide was dispersed in the product, and 5 types of A to E were spread on 5 vinyl pieces of 1 m × 1 m, respectively, and a light shielding period and a light shielding amount were tested.

The light shielding periods were A, E, C, B, and D in ascending order. Regarding the light shielding amount and the ultraviolet cut rate, the five types were about 55% to 60%, and there was not much difference. Moreover, the usage method in a house is 4% to 5% 2 kg to 3 kg of titanium dioxide in 60 L of water per 10 a, 1.6% of 1 kg of the binder is stirred and dispersed, and is spread on the roof, outer wall, etc. of the facility.

  The combination of titanium dioxide photocatalyst and vinyl acetate resin emulsion as binder and synthetic resin-based alkyd, acrylic, urethane, polyvinyl alcohol not only shields the light and lowers the temperature, but also provides antibacterial, antiviral, deodorant, and deodorizing effects. Therefore, it can be used not only for in-house cultivation but also for applications where photocatalytic action such as generation of various odor components is indispensable for livestock farmers.

Claims (6)

  When titanium dioxide is used, it is a flowable photocatalytic light-shielding agent comprising 5% to 60% of anatase type titanium dioxide of 0.1 to 50 microns that efficiently performs photocatalytic reaction with ultraviolet light. One or two kinds of vinyl acetate resin emulsion / synthetic resin type alkyd / acrylic / urethane / polyvinyl alcohol are blended in the component at a ratio of 5% to 50%. The photocatalytic light-shielding agent according to claim 1. 3. The photocatalytic light-shielding agent according to claim 2, which can be easily diluted and dispersed about 2 to 100 times with water in groundwater, tap water, waterways, etc., and can be sprayed at an ultra-low cost. The photocatalyst type | mold light-shielding agent of Claim 3 which can be easily spread | dispersed with the power sprayer etc. which are normally used by the farmer. 5. The photocatalytic light-shielding agent according to claim 4, wherein ultraviolet rays are cut and indoor temperature is lowered by coating titanium dioxide on a roof, an outer wall or the like in a greenhouse, a greenhouse, a glass greenhouse, or the like. In livestock farms, such as livestock farmers, the temperature of livestock animals themselves and the temperature in summer make room temperatures unbearable by livestock animals. 5. The coating of titanium dioxide on the roof, outer wall, etc. not only lowers the temperature in the barn, but also can decompose various odor components coming out of the barn, and can also decompose germs and viruses. The photocatalyst type light shielding agent as described.