ANIONIC POLYVINYL ALCOHOL COPOLYMER AS PROTECTIVE COLLOID FOR PESTICIDAL POLYUREA MICROCAPSULES
A process for producing microcapsules containing a shell and a core of a liquid water-insoluble material is disclosed. The microcapsules are prepared using a bifunctional isocyanate, an anionically modified diisocyanate, a bifunctional amine, and a protective colloid. The protective colloid is a pol...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A process for producing microcapsules containing a shell and a core of a liquid water-insoluble material is disclosed. The microcapsules are prepared using a bifunctional isocyanate, an anionically modified diisocyanate, a bifunctional amine, and a protective colloid. The protective colloid is a polyvinyl alcohol copolymer having hydrolysis degrees from 85 to 99.9%. |
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