Process for the preparation of stable aqueous suspensions of methyl N-(2-benzimidzolyl)-carbamate

The invention relates to a new process for the preparation of stable aqueous suspensions of methyl N-(2-benzimidazolyl)carbamate. According to the invention an aqueous solution of an addition salt of methyl N-(2-benzimidazolyl)carbamate and an inorganic acid, optionally containing an excess amount o...

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Hauptverfasser:	KOVATS, FERENC, GOMBOS, LASZLO, OEZ, SIMON, IMRE, SZEGOE, ANDRAS, BONE, ISTVAN, PETERDI, VIKTORIA
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY FISHING FORESTRY HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HUNTING METALLURGY ORGANIC CHEMISTRY PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF TRAPPING
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creator	KOVATS FERENC GOMBOS LASZLO OEZ FERENC SIMON IMRE SZEGOE ANDRAS BONE ISTVAN PETERDI VIKTORIA
description	The invention relates to a new process for the preparation of stable aqueous suspensions of methyl N-(2-benzimidazolyl)carbamate. According to the invention an aqueous solution of an addition salt of methyl N-(2-benzimidazolyl)carbamate and an inorganic acid, optionally containing an excess amount of acid is reacted with an aqueous potassium, sodium or ammonium hydroxide solution or ammonia gas, in the presence of a wetting, dispersing and antifoaming agent and optionally of a protecting colloid at a temperature of 50 DEG C. to 100 DEG C., and if desired, the suspension obtained is concentrated or diluted. The suspension prepared by this process can either be used directly or can be supplemented with further additive(s) conventionally used in the preparation of plant protecting agents.
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According to the invention an aqueous solution of an addition salt of methyl N-(2-benzimidazolyl)carbamate and an inorganic acid, optionally containing an excess amount of acid is reacted with an aqueous potassium, sodium or ammonium hydroxide solution or ammonia gas, in the presence of a wetting, dispersing and antifoaming agent and optionally of a protecting colloid at a temperature of 50 DEG C. to 100 DEG C., and if desired, the suspension obtained is concentrated or diluted. 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subjects	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY FISHING FORESTRY HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HUNTING METALLURGY ORGANIC CHEMISTRY PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF TRAPPING
title	Process for the preparation of stable aqueous suspensions of methyl N-(2-benzimidzolyl)-carbamate
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