MICROCAPSULE MANUFACTURED FROM ISOCYANATE CONTAINING POLYETHYLENE OXIDE

PURPOSE: To prepare microcapsules in an energy-saving manner by using a polyisocyanate which consists exclusively or partially of reaction products of isocyanates having a functionality of 2, 3 or more with polyethylene oxide alcohols. CONSTITUTION: A polyisocyanate to be used consists exclusively o...

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Hauptverfasser:	HARO TOROIBERU, HERUMUUTO RAIFU, YURUGEN BAISAA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COLOUR PRINTING COMPOSITIONS BASED THEREON HUMAN NECESSITIES HYGIENE LINING MACHINES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS STAMPS THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	PURPOSE: To prepare microcapsules in an energy-saving manner by using a polyisocyanate which consists exclusively or partially of reaction products of isocyanates having a functionality of 2, 3 or more with polyethylene oxide alcohols. CONSTITUTION: A polyisocyanate to be used consists exclusively or partially of reaction products of isocyanates having a functionality of 2, 3 or more with polyethylene oxide alcohols. A substance to be enclosed in capsules and the polyisocyanate are dissolved in a hydrophobic solvent. The hydrophobic mixture is emulsified in water continuously or intermittently. Then a polyamine which can be reacted with the isocyanate is added to prepare microcapsules.