METHOD OF PRODUCING POLYURETHAN-POLYCARBAMIDE MICROCAPSULES

Pressure-resistant polyurethane-polyurea particles with textured internal mass prepared from a liquid phase immiscible with water and containing organic solvents, isocyanate prepolymers and optionally active substances or mixtures of active substances, the liquid phase being dispersed in an aqueous...

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Bibliographische Detailangaben
Hauptverfasser:	KONRAD ALBREKHT,DE, RUDOLF KHAJNRIKH,DE, KHAJNTS FRENSH,DE
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON FISHING FORESTRY GENERAL PROCESSES OF COMPOUNDING HUMAN NECESSITIES HUNTING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PEST REPELLANTS OR ATTRACTANTS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING TRAPPING WORKING-UP
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Beschreibung
Zusammenfassung:	Pressure-resistant polyurethane-polyurea particles with textured internal mass prepared from a liquid phase immiscible with water and containing organic solvents, isocyanate prepolymers and optionally active substances or mixtures of active substances, the liquid phase being dispersed in an aqueous phase at temperatures of from 0 DEG C. to 95 DEG C., wherein the liquid organic phase contains as isocyanate prepolymer a reaction product of a stoichiometric excess of an aliphatic, aromatic, cycloaliphatic, or araliphatic di- or polyisocyanate with a di- or polyol, the reaction product having a mean molecular weight in the range of from about 300 to 10,000, and an alkyl and/or alkoxyalkyl acetate of the formula in which m is zero, 1 or 2, n is 1 to 4, and R is (C1-C5)alkyl, and the aqueous phase contains a protective colloid and optionally a surface-active agent.