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 | , , , , , , |
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Format | Patent |
Language | English |
Published |
03.06.1986
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Edition | 4 |
Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: US19850691402 |