SU472490A3 - Insecticidal composition - Google Patents

Description

(54) INSECTICIDE COMPOSITION

and / or polystyrene, and / or polyethylene, and / or polyvinyl chloride, and / or chlorinated polyethylene, and the ratio of the amount of block copolymer to the amount of polymer added varies from 1: 9 to 9: 1, the solid carrier may also contain silica or rubber. The composition contains 0,0-dimethyl-0- (2,2dichlorovinyl) -phosphate in an amount of from 0.01 to 50 weight. % and from 25 to 95 wt. % solid media.

The stabilizer content in the new composition is 0.01-50 wt. %

The pesticidal composition can be of any shape suitable for diffusing the insecticide into space, and have a flat sheet, bar or strip shape. The composition may be enclosed in an appropriate casing consisting of an inert material, for example, a lacquered metal or plastic, polyethylene or polypropylene, cardboard. Shell can be executed

closing so that, if necessary, the product can be isolated from the atmosphere, the latter compositions are particularly suitable for the latter case. The pesticidal compositions according to the invention can be used to achieve a constant release of the pesticidal compound over several months.

Example. A variety of compositions are prepared in the form of strips having dimensions of 25x6, 4x0.6 cm.

The strips covered with a waterproof film, which is removed for 2 minutes every 24 days, are kept in an atmosphere at 23 ° C and 75% relative humidity (OV).

Stripes in the table. 1, 3, 4, 5 are made in the mold, and the strip in table. 2 - soaked.

The composition and properties of the compositions are presented in table. 1-5.

Table 1

 On a scale (dry - very wet)

Thus, administration to the composition without stabilizer is moistened after 6 days.

12.4 wt. including polyethylene glycol leads to 90 days the degree of humidity of the composition

the fact that the primary humidity appears without a stabilizer is significantly more steep on the 33rd day, while composition 25 is less than the humidity of a composition with a stabilizer.

table 2

Content in the composition, wt. h

As can be seen from the table, the introduction in the composition of 7.5 and 12.4 weight. including stabilizer value Polyethylenegol with mol. weighing 1500.

but it increases the time for the onset of nervous humidity.

Table 3

Table 4

Table 5

7 Subject and content

The insecticidal composition, the content of 0,0-dimethyl-O - (2,2-dichlorovinyl) phosphate and a solid carrier, characterized in that, in order to increase the stability of the composition, a stabilizer in the form of polyalkylene glycol is introduced into it, and mainly in the form of polyethylene glycol The average molecular weight is from 200 to 20000, the solid carrier completely or partially consists of a thermoplastic material in the form of polyvinyl chloride, or the solid carrier consists entirely or partially of a block sonolimer having the formula

A-B- (A), A- (BA) 2-5ILIA-B (BA) 2-5,

in which A is the same or different polymer blocks of a monoalkyl replaced aromatic hydrocarbon, B is a polymer block of a hydrocarbon disk with conjugated8

By these connections, any two polymer blocks B with conjugated links are considered as a single-unit block B; each block A has a molecular weight of from 5,000 to 50,000, and each block-polymer B has an average molecular weight of from 40,000 to 500,000; the amount of A is 10-65% of the total weight of the block copolymer, which is configured as polystyrene-nolybutadiene-polystyrene; in addition to the block copolymer, the carrier contains an ethylene-vinyl acetate copolymer and / or polystyrene and / or polyethylene and / or polyvinyl chloride, and or chlorinated polyethylene, and the ratio of the amount of block copolymer to the amount of polymer added varies from 1: 9 to 9: 1, and the composition contains 0,0-dimethyl-O- (2,2-dichlorovinyl) phosphate in an amount of 0.0 up to 50 weight. % and from 25 to 95 wt. % solid media.