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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Bibliographische Detailangaben
Hauptverfasser: FRIHAUF John, MECFEL-MARCZEWSKI Joanna, REPAGE Ronald, BOWE Steven, BURAKOWSKA-MEISE Ewelina, BRATZ Matthias, DENUELL Wolfgang
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%.