BG1066U1 - Insecticide for cockroach extermination - Google Patents

Abstract

The insecticide is non-toxic for warm-blooded animals and people. In is in the form of hard and durable tablets that attract the roaches and have a one-year residual effect. The insecticide contains the following ingredients in mass parts: 10 to 50 boric acid; >50 to 90 potato or maize meal in a ratio of 10:90 to 90:10; 3 to 15 egg powder; 0.5 to 8 gelatin as a 10 percent water solution; 0.01 to 0.2 oligomeric plasticizer with a molecule mass of 4á000 to 8á000 and with an acid number up to 0.5, obtained from adipic, cebacic or pelargonic acid, polyethylene glycol 200 and isooctanol; 0.2 to 10 polymer obtained in the radical copolymerization of vinyl acetate and acrylamide with mole ratios of 1:0 to 1:0.1 in the form of a 50 percent water dispersion of particles having a diameter of up to 120 nm or in the form of a polymer obtained in the radical copolymerization of methyl methacrylate with butylacrylate in mole ratios of 1:1 to 2:1 and of acrylic or methacrylic acid in a quantity of 1.30 mass percent in the form of a 50 percent water dispersion of particles having a diameter of up to 80 nm.

Description

(54) INSECTICIDES FOR DRUG DESTRUCTION

Technical field

A useful model relates to an insecticidal agent for the destruction of cockroaches.

BACKGROUND OF THE INVENTION

Fighting sinantropic cockroaches takes up a large part of disinfection activities. However, the number of cockroaches is steadily increasing in the context of urbanization. For the destruction of cockroaches, food baits based on boric acid or its sodium salt [1,2,3] or water-soluble borates [4], phosphorus containing insecticide [5], a cockroach attracting substance [6] are used.

The poisonous food baits are liquid, pasty, powdery and solid and are made on the basis of various formulations with active ingredients.

The disadvantage of liquid, paste and powder baits is the difficulty in collecting and removing them, if necessary. Powdered baits also require excellent mixing of the components in order to achieve a homogeneous composition in each powder.

Solid poisonous food baits are preferable because they are more durable and retain their insecticidal activity for a longer time, with the lowest risk of environmental contamination. To obtain them, it is necessary to adhere the particles of the exits of the substances. Some compositions provide this adhesion due to crystallization of boron compounds with water [7]. Some nutritional, odorizing and coloring additives disrupt crystallization processes and prevent the formation of solids from boron compounds. Formulations with minimal amounts of up to 3% of such additives are known [8]. Some nutritional supplements have adhesive properties [9]. A disadvantage of the disaccharide used in this case is the water solubility of the baits. Compositions with non-sugar-like polysaccharides [10] are difficult to form in bodies with the required rigidity and, in a humid atmosphere, these bodies swell and disintegrate.

Appropriate polymeric solutions are used to adhere the components of the solid poisonous food baits [3,11,12]. The disadvantage of these compositions is the adsorption of the polymer solutions in the particles of the baits due to their porosity.

The technical nature of the utility model

The purpose of the utility model is to create a non-toxic insecticide in the form of tablets with the necessary insecticidal effect, attractive for cockroaches, with the required hardness, to maintain their properties in a dry and humid atmosphere and to have increased water resistance. .

This objective is achieved by using a composition of an insecticidal cockroach eradicator containing in wt. hours: from 10 to 50 boric acid, from 50 to 90 potatoes and corn flour in a ratio of 10:90 to 90:10, from 3 to 15 egg powder, from 0.5 to 8 gelatin as a 10% aqueous solution , from 0.01 to 0.2 oligomeric plasticizer having a molecular weight of 4000 to 8000 and an acid number to 0.5, obtained from adipic, sebacic or pellaric acid, polyethylene glycol 200 and isooctanol, from 0.2 to 10, a polymer, obtained by radical copolymerization of vinyl acetate and acrylamide with molar ratios from 1: 0 to 1: 0.1 in the form of a 50% aqueous dispersion of particles up to 120 pg in diameter or of a polymer obtained radical copolymerization of methyl methacrylate and butyl acrylate with a mole ratio of from 1: 1 to 2: 1, and acrylic or methacrylic acid in an amount of 1,30% by weight. in the form of a 50% aqueous dispersion of particles up to 80 m in diameter. Particles of this size are distributed over as large a part as possible of the surface of the components of the solid poisonous food baits, which enables tableting to cylindrical tablets with increased resistance in dry and humid atmospheres and with increased water resistance. ie give the tablet a property of making the tablets attractive to cockroaches and ensuring their destruction.

Examples of implementation of the utility model

The useful model is illustrated by the following examples.

1066 w

Example 1. To 32 wt. h. corn flour and 32 wt. h. potato flour 25 wt. hours of finely ground boric acid. After homogenization, 5 wt. including egg powder, 2 wt. pp. gelatin as 10% aqueous solution, 0.02 wt. h. oligomeric plasticizer with a molecular weight of 6200 and an acid number of 0.4 obtained from adipic acid, polyethylene glycol 200 and isooctanol, 0.5 wt. h. polymer obtained by radical copolymerization of vinyl acetate and acrylic amide with a molar ratio of 0.96: 0.04 iodine form of a 50% aqueous dispersion of particles up to 120 m in diameter. After homogenization, the mixture is tableted on a tablet machine to tablets stable in use in dry and humid atmospheres, with increased water resistance, determined by European Pharmacopoeia (Ph. Eur. Method 2.9.1) degradation time - 81 s and with insecticidal characteristic, according to a known method [1], in which 3 adult cockroaches are in contact with the insecticide agent indoors and after the third day all cockroaches are dead.

Example 2. To 30 wt. h. corn flour and 30 wt. h. potato flour 25 wt. hours of finely ground boric acid. After homogenization, 7 wt. including egg powder, 2 wt. h. gelatin in the form of a 10% aqueous solution, 0.02 wt. h. an oligomeric plasticizer with a molecular weight of 7000 and an acid number of 0.4 obtained from pellargic acid, polyethylene glycol 200 and isooctanol, 0.5 wt. h. polymer obtained by radical copolymerization of methyl methacrylate and butyl acrylate with a molar ratio of 1.02: 1 and 1.30% by weight. methacrylic acid in the form of a 50% aqueous dispersion of particles up to 80 nm in diameter. After homogenization, the mixture was tableted on a tablet machine to tablets stable in use in dry and humid atmospheres with increased water resistance, determined as in Example 1, with a breakdown time of 98 s and with an insecticidal characteristic, determined as in Example 1 after the third day all the cockroaches are dead.

The suitability of the compositions of Examples 1 and 2 under different conditions of use was determined to be good since no cracks were observed on the tablets after 10 days of operation in a dry and humid atmosphere.

The tablets are 16 mm in diameter and 18 mm high in light yellow color.

Example 3 (comparative) of US 4759930

As described in the patent, an insecticidal mixture is prepared, the characteristics of which are determined as in Example 1. The three adult cockroaches die after the fifth day.

Example 4 (comparative) according to BG 405 Y1.

According to the description in Example 2 of BG 405 Y1, a mixture is prepared which is tableted on a tablet machine to tablets which are determined by water resistance with a decay time of 61s.

Claims (2)

Claims An insecticidal cockroach killer, characterized in that it contains from 10 to 50 wt. hours of boric acid, from 50 to 90 wt. h. potato and corn flour at ratios from 10:90 to 90:10, from 3 to 15 wt. including egg powder, from 0.5 to 8 wt. hours gelatin as a 10% aqueous solution, from 0.01 to 0.2 wt. h. an oligomeric plasticizer having a molecular weight of 4000 to 8000 and an acid number below 0.5, obtained from adipic, sebacic or pellaric acid, polyethylene glycol 200 and isooctanol, from 0.2 to 10 wt. h. polymer obtained by radical copolymerization of vinyl acetate and acrylic amide with molar ratios from 1: 0 to 1: 0.1 as a 50% aqueous dispersion of particles up to 120 nm in diameter or to a polymer obtained by radical copolymerization of methyl methacrylate and butyl acrylate with a molar ratio of 1: 1 to 2: 1 and of acrylic or methacrylic acid in an amount of 1.30% by weight. as a 50% aqueous dispersion of particles up to 80 nm in diameter. An insecticidal agent according to claim 1, characterized in that the egg powder, gelatin, polymer dispersions of vinyl acetate and acrylic amide or of methyl methacrylate, butyl acrylate and acrylic or methacrylic acid are binders and the oligomeric plasticizer of adipic acid, sebaceous or pellargonic acid, polyethylene glycol 200 and isooctanol is a gliding and plasticizing agent.