DE506731C - Process for the production of dry seed dressings and pest repellants - Google Patents

Description

GERMAN EMPIRE

JtY

ISSUED ON SEPTEMBER 8, 1930

REICH PATENT OFFICE

PATENT LETTERING

M 506731 CLASS 451 GROUP

I. G. Farbenindustrie Akt- Ges. In Frankfurt a. M. *)

It is already known to the alkyl ethers To use cellulose as protective colloids for disinfectants. Also the use of pulp waste liquors as protective colloids for disinfectants and pesticides or pesticides have already been described. By adding The substances mentioned succeed in producing particularly good and durable emulsions or suspensions of the disinfectants, which show an increased effect due to the fine distribution.

It has now been found that with particular advantage in pest control, specifically for dusting or powdering purposes, e.g. B. for downy mildew or use hay and sourworm control in viticulture, or for the dry dressing of seeds, fungicides or insecticides can, which contain methyl cellulose or are impregnated with methyl cellulose. Due to the methyl cellulose content of these agents a very good adhesion of the same to parts of plants is effected. In the presence of small amounts of moisture, such as dew, Fog or rain, a partial dissolution of the methyl cellulose takes place when it re-enters from drought or warmth, e.g. B. by sunshine, causes the excreting or coagulating methyl cellulose a firm adhesion of the fungicide or insecticide to the parts of the plant to be protected. The use of with methyl cellulose has also proven itself for dry seed dressing impregnated fungicides as beneficial. It is advisable to have a follow-up treatment to carry out the dry, dusted seeds with a small amount of water, the supply of which takes place, for example, in the pickling apparatus itself through a nozzle can. By storing the seed dressed in this way in a warm room for a short time, if necessary or outdoors in the sun's heat is due to, re-coagulating the partially dissolved Methyl cellulose causes the impregnated fungicide to stick intensively to the seed causes so that not even the slightest re-dusting of the dry dressing agent when transferring the seeds or when Sowing takes place; thus every harassment of the working staff is through Dust effect avoided.

The following examples can illustrate this:

example 1

Dusts to combat the Hayworms and sourworms

Proved to be particularly advantageous in the tests, manufactured by grinding of 40 0/0 Calciumarseniat, 3 0/0 methylcellulose, 5 7 o / _o talc.

Compared to the one made from the same materials without methylcellulose, the

*) The patent seeker indicated the following as the inventors:

Dr. Adolf Steindorff and Dr. Kaspar Pfäff in Frankfurt a. M.-Höchst.

The preparation provided has a significantly better adhesion.

Example .2 Means for dry pickling

of seeds

There are ground together: 400/0 Copper carbonate, 5% mercury chloride, 5% Methyl cellulose, 500/0 talc.

Claims (1)

Claim: Process for the production of dry seed dressings and pesticides with the concomitant use of alkyl cellulose, characterized in that fungicides are ground by grinding or insecticides with methyl cellulose and fillers, dry powder mixtures manufactures.