Microcapsules having walls of polyaddition products of water-insoluble polyamines with water-soluble polyisocyanate adducts

Microcapsules having a hydrophobic core material and capsule walls formed by the reaction of water-insoluble polyamines with water-soluble bisulphite adducts of polyisocyanates, a process for the production thereof which is characterized in that a mixture of a hydrophobic core material and water-ins...

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Main Authors AWATER; ALBERT, BARNES; JAMES M, JABS; GERT, MUELLER; HANNS P, NEHEN; ULRICH, WEIMANN; NORBERT, DAHM; MANFRED
Format Patent
LanguageEnglish
Published 03.06.1986
Edition4
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COLOUR PRINTING
COMPOSITIONS BASED THEREON
LINING MACHINES
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
STAMPS
THEIR PREPARATION OR CHEMICAL WORKING-UP
THEIR RELEVANT APPARATUS
TRANSPORTING
TYPEWRITERS
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Summary:Microcapsules having a hydrophobic core material and capsule walls formed by the reaction of water-insoluble polyamines with water-soluble bisulphite adducts of polyisocyanates, a process for the production thereof which is characterized in that a mixture of a hydrophobic core material and water-insoluble polyamines is emulsified in water or in an aqueous protective colloid solution to the required particle size, water-soluble bisulphite adducts of polyisocyanates in the form of powders or aqueous solutions are added and the mixture is left to react to completion at temperatures of from 1 DEG to 140 DEG C., and applications thereof.
Bibliography:Application Number: US19850691402