WO2007069796A1

WO2007069796A1 - Insecticidal composition containing boric acid

Info

Publication number: WO2007069796A1
Application number: PCT/KE2006/000016
Authority: WO
Inventors: Anna Vansilievna Chepkonga
Original assignee: Anna Vansilievna Chepkonga
Priority date: 2005-12-13
Filing date: 2006-08-08
Publication date: 2007-06-21
Also published as: ZA200807676B; AP2008004498A0

Abstract

An insecticidal composition comprising boric acid 35-38%, petroleum jelly 24-29%, water 7-10%, glycerin 7.5-9.5%, sugar 7-10%, garlic powder 1-2.5%, The formulation that carries the active ingredient is comprised of an active ingredient, a emulsifying agent, a gelling agent, antifoaming agent, a moisturing agent, and a flavoring agent.

Description

TITLE: INSECTICIDAL COMPOSITIONS

BACKGROUND OF THE INVENTION

Field of the Invention.

The invention relates to insecticidal composition, which are particularly suitable for handling during processing, packaging, transportation and storage. The invention specifically relates to insecticidal compositions with most or all the aforementioned desired characteristics and with long term effective pest control.

Discussion of Prior Art.

Crawling insects have a long history as a major problem to mankind. These insects have been controlled in many ways including the use of insecticidal composition. There are a number of attempts to prepare insecticidal compositions for control of such crawling insects. Considerable effort has been put to into the development of a long lasting insecticidal composition. However, there have many difficulties that have been experienced in producing an optimum insecticidal composition with 10 desired characteristics by the users.

The major requirement of any long lasting and effective insecticidal compositions is the chemical stability to ensure efficacy and uniform activity. However, safety must come high on the list of important attributes of a good insecticidal composition.

Other important attributes include worker exposure, safety for the

Environment, including spills and container disposal issues. Most of these chemicals are applied under furniture and craves or cracks which occasionally come into contact with people. For formulation to be safe they need to be physically stable and this includes separation or breakdown of the product, which affects any of the other properties.

Another desirable property includes the ability to not leave any marks or stains on furniture or walls where it is applied. The other properties desirable for such formulations also include the ability to withstand low or high temperatures without affecting the loading of the active ingredient. This includes melting at high temperatures and crystallization during low temperatures. The formulations must be useable without excess forming or bad smells or odours, be compatible with other commonly used pesticides and at the same time maintain the biochemical activity.

The insecticidal composition has to be ^f^toifeeφaefcaglfS'ϊn^' conventional

formulation ratio and show the desirable characϊeFΪS'lϊtfS "m order to wipe out the entire population of these pests over a long period of time.

Many of the insecticidal compositions used today have quite a number of undesirable characteristics. Firstly many of them are made up with materials that when applied will always leave ugly marks or sports where they were applied. This is not a desire attribute to the users. The other problem of known convention and composition are made up of rough materials and desired means of application like the syringe applicator or tube with a long nozzle cannot be used to apply such compositions.

Other compositions are effective but are harmful to the environment or unsafe when exposed to workers or the people living in homes where such compositions are used.

An object of the instant invention is to provide an insecticidal composition that has most or all the aforementioned desired properties.

An object of the instant invention is to provide insecticidal compositions containing an active ingredients, most preferred active ingredients for purposes of this invention being Boric acid and having most or all the aforementioned desired characteristics or properties needed in an insecticidal composition.

SUMMARY OF INVENTION

The insecticidal compositions according to the invention comprising a specific ratio of compounds, contained in a water soluble mixture comprising an active ingredient and solvent, and at least one gelling agent and at least one emulsifier, and at least one antifoaming agent, and at least one moistening agent, and at least one flavoring/baiting agent to attract the crawling insect to consume the insecticidal composition. An important feature of this instant invention relates to an insecticidal composition for use against insect pests and method therefore comprising an effective amount of active ingredient, preferred active ingredient for purposes of this instant invention being Boric acid.

Another feature of the instant invention is the ability of the insecticidal composition to be used and not to leave an ugly marks or spots on furniture or walls and is also effective for a long period of time.

Another feature of the instant invention is the ability of the insecticidal composition to be early applied through simple application by hand and also be able to be applied using state of the art application methods like syringe and tube with pointed nozzles for domestic users.

Another feature of the instant invention is that the composition has no toxicity to workers handling it during its preparation and also does not have any danger to people who are exposed to the insecticidal composition.

Another feature of the instant invention is the fact that the insecticidal composition as claimed in this invention is environmental friendly and therefore do not cause any harm to the environment.

Still another aspect of this invention is a method of controlling insect pests by applying the insecticidal composition to affected areas and being able to work Effectively over along period of time.

Detailed Description of the Invention.

Many kinds of insecticidal compositions are presented in form of paste and other crude formulations like granules or pellets have presented a number of problems. These problems include but not limited to leaving behind messy residues after application, affect asthmatic patients and those who are allergic, is irritating to surface application and has foul smell.

An essential aspect of this invention is the development of an insecticidal composition devoid of all the above mentioned shortcomings and contains a water soluble solvent, active ingredient and at least one selling agent and at least one emulsifier and at least one flavoring agent and at least one moisturizer. Boric acid is a white Solid, Odorless, and has a melting Point of 171%C.The density isl .435g/cm and has a Solubility of 5.6g in 100ml of water at 20'C; 63.5g/ at 30 'C. Boric acid is stable under ambient conditions, has a vapor Pressure of kPa at 20 'C, is non flammable and Hygroscopic above

Boric acid and its sodium salts have insecticidal properties and can be used in variety of sites, including sewage systems, outdoor residential areas and indoor sites such as homes, hospitals and commercial buildings.

Insecticidal Formulations of contalfe^i^tδύrf^'δkl^liig®^ aerosols, Liquid

pellets/tablets, pastes baits etc.

Boric acid is often used as

a rel^^h^eno^ogci^i^^eitide for the control of the cockroaches, termites, fire

ants, WsS^Baasa^Ff^oXher insects and is an active ingredient of many commercial insecticide formulations.

As an insecticide, boric acid acts as a stomach poison, affecting the insect's metabolism and protoplasma. Boric acid is generally known as a desiccant; in other words it kills by removing the moisture form the body of the pests, causing severe dehydration, which will affect electrolyte metabolism with the potential of metabolic acidosis.

Ingestion of boric acid causes insects deaths, three to ten days later, of starvation and dehydration. Due to its unique mode of action, insects do not develop resistance to borates. Boric acid/Borates are very effective against many crawling insects' pests including cockroaches, silverfish, larder beetles, carpenter ants and other woodborers as well as organisms causing wood decay.

Baits containing boric and food ingredients work on a simple principle, attract the cockroach with a promise of easy food; when it eats the food, it also ingests a poison.

For best results, clean, clean the area to be treated. Apply the paste with a stick; smear it on the surfaces in the corners of rooms, shelves, cupboards drawers, and other hidden dark places of the infested areas. he Boric acid paste can be applied in domestic ^emis^P,J^βά$L%ndli,

appliances, in electrical and office equipment. Cockroaches will usually die within seven days after application, in cases of severe infestation; a second application may be required after 14 days.

Boric acid naturally occurs in air, water (surface and ground water), soil and plants, including food crops. It enters the environment through weathering of rocks, volatilization from seawater and volcanic activity. Most boron compounds convert to boric acid in the environment, and boric acid is the boron compound of environmental significance. Boric acid is adsorbed to soil particles and aluminum and iron minerals.

Experiment 1

The efficacy of the above preparation was tested in five houses. The insecticidal composition was smeared on a flat surface - such as on a small piece of paper with approximately 5gm-10gm of the insecticide. It was then placed in the kitchen corners and other hidden spaces in four houses. The fifth house acted as a control. No insecticide was placed there. The cockroaches that died were young ones basically nymphs.

The results are shown in the following table: -

COCKROACHES DEAD

HOUSES DAY 1-6 DAY 7-14

1 0 8

2 0 3

3 0 2

4 0 2

5 (Control) 0 0

The efficacy of the insecticide paste was tested in the laboratory. Ten ( 10) cockroaches were placed in a cage in which a filter paper smeared with 5gm-10gm of the composition was kept. All the (10) cockroaches died on Day 7.No lethal dose (LD50) was observed as all the cockroaches died at the same time - day 7.No eggs were laid before the cockroaches died.

The above preparation is safe to use as a public Health pesticide against cockroaches. The insecticide is specific against cockroach "Blatania Orientalis" and "Blatta germanica"

The amount of active ingredien^. ^th§iiHS^Ϊi^icϊal,compos\|ion of the invention is

generally comprised between 3|f> and 3tPfo oΨm4total inse^ticidal composition.

The amount of emulsifier in the Ir^^j^^ϋP^ftn^^ή of the invention is generally comprised between 7 and lO^^me total insecticidal composition

The amount of moisturizer in the insecticidal composition of the invention is generally comprised between 7 and 10% of the total insecticidal composition.

The amount of gelling agent in the insecticidal composition of the invention is generally comprised between 24 and 28 % of the total insecticidal composition..

The amount of flavoring agent in the insecticidal composition of the invention is generally comprised between 1.0 and 2.5 % of the total insecticidal composition.

A particular embodiment of the present invention is an insecticidal composition containing an active ingredient, preferably Boric acid and a solvent and at least one selling agent and at least one emulsifier and at least one flavoring agent.

Another particular embodiment of the present invention is an insecticidal composition according to any one of the previous embodiments wherein the solvent is any conventional solvent could be used preferred according to the present invention is water.

Another particulars embodiment of the present invention is an insecticidal composition according to any of the previous embodiments wherein the emulsifying agent is any conventional emulsifying agent that could be used the preferred agent according to the present invention is sucrose and glycerin.

Another particular embodiment of the present invention is an insecticidal composition according to any of the previous embodiment wherein the selling agent is any of the conventional gelling agents; preferred for this present invention the gelling agent is petroleum jelly and milking jelly.

Another particular embodiment of the present invention is all insecticidal composition according to any of the previous embodiment wherein the flavoring agent is any of the conventional flavoring agents, preferred for this invention is garlic powder.

The following examples are given to illustrate the invention and some mode of carrying out the invention. The following examples are only the preferred embodiment for carrying out the present invention; however, it is not intended to restrict the invention to these particular examples. Any actions or activities that are in the spirit of the present invention are considered part of this invention.

Example 1

Stirring the following compounds in the ratios indicated bellow made a uniform mixture. The mixture was then heated to a temperature of 70 degrees centigrade.

Stearyl alcohol 5 grams

Liquid paraffin 5 grams

Petroleum jelly 15 grams

Water 5 grams

20 grams of Very fine Boric acid was passed through a 180 um sieve and then added to the molten ointment based mixture.

After cooling or solidifying the mixture 5 grams of glycerin and 5 grams sucrose were added and passed through a 180um sieve then the mixture was mixed Thoroughly and packaged.

The final mixture therefore was made up of the following compounds in the following ratios.

Stearyl alcohol 5 grams

Petroleum jelly 15 grams Water 5 grams

Boric acid 20 grams

Glycerin 5 grams

Sugar 5 grams

Garlic powder 1 grams

Example 2

The following compounds were mixed in the following ratios stirred thoroughly to form a uniform mixture. This mixture is not ointment based unlike example 1 which is ointment based. The gelling agent is milking jelly.

Boric acid 13grams

Milking j elly 10 grams

Glycerin 6 grams

Sugar 5 grams

Garlic powder 1 grams

The Boric acid and sugar were passed through a 180um sieve then mixed thoroughly and package.

The insecticidal composition according to this invention acts by retarding the growth of the cockroach and inhibits the egg laying process. It kills the cockroach slowly due to retardation over a period of time. It is non-Irritant, Odorless and has a repelling effect on the cockroach population.

The composition was applied insect infested areas and the following results reported. The insecticidal composition as claimed in the present invention is preferred since once used it does not leave any spots or marks in the placed it is applied. The insecticidal composition according to the present invention has smooth particles and can be applied into cracks, crevices in the walls or joints of furniture where the insects hide. This is a major advantage and is preferred by users who are in possession of state of the art like the syringe applicators. Ability to be applied on specific targets- through the use of a tube with a nozzle and syringe application.

The insecticidal composition according to the present invention has a longer shelf life as compared to those already known insecticidal composition. This is an added advantage and encourages longer storage and transportation times.

The insecticidal composition according to the present invention is not toxic and is not harmful to the environment.

The insecticidal composition according to the present invention can be made in different colors most preferred being the clear color and color of furniture or walls. The insecticidal composition according to the present invention is more hygienic than the known conventional insecticidal composition.

Claims

1. An insecticidal composition comprising 35-38% boric acid, petroleum jelly 24- 29%, water 7-10%, glycerin 7.5-9.5%, sugar 7-10%, garlic powder 1-2.5%,

2. A process of manufacturing an insecticidal composition comprising 35-38% boric acid, petroleum jelly 24-29%, water 7-10%, glycerin 7.5-9.5%, sugar 7-10%, garlic powder 1-2.5%,

3. A process for the manufacturing of insecticide as claimed in land 2 above whereas the active ingredient is boric acid.

4. An insecticide according to claim 1 above, which has all the desired characteristics of a, good insecticidal composition.

5. A process for manufacture of insecticide as claimed in 1 and 2 where as the said insecticide has long term control of insects by removing moisture from the insect therefore causing death through dehydration and inhabiting the reproductive cycle of the insects

6. The insecticide according to claim one whereas the formulation that carries the active ingredients are comprised of an active ingredient, a emulsifying agent, a gelling agent, antifoaming agent, a moisturing agent, a binding agent and a flavoring agent.

7. An insecticide according to claim 1 which is easy to manufacture, is non-toxic, is no irritating to the skin, has no allergies, environmental friendly, leaves no messy residues when applied, has a longer shelf life and controls the insects for a longer period of time.