PAPPERSLIMNINGSKOMPOSITION

Particulate solids comprising ketene dimers may be obtained by drying a conventional aqueous dispersion of the dimer to which a water dispersable encapsulating agent has been added. Preferably the encapsulating agent is a cationic starch and the solid is obtained by spray drying the emulsion under c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WATSON, LAWRENCE FORRESTER, JOHNSON, DAVID CHARLES, SHEPHERD, DAVID WILLIAM
Format: Patent
Sprache:fin
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Beschreibung
Zusammenfassung:Particulate solids comprising ketene dimers may be obtained by drying a conventional aqueous dispersion of the dimer to which a water dispersable encapsulating agent has been added. Preferably the encapsulating agent is a cationic starch and the solid is obtained by spray drying the emulsion under controlled conditions. The products retain their sizing properties even on prolonged storage.