C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 173/00 (2006.01)
Patent
CA 2231521
A release agent for rolls, particularly rolls in paper making such as press rolls is described which comprises one or more release active components and optionally conventional additives and which is in the form of a microemulsion. Suitable compositions include those which are essentially free from water and to which water is only added before actual application. The microemulsion or the microemulsion, which upon water dilution is at least intermediately formed, is unstable upon dilution with water to the application concentration which results in a good and homogeneous application of the active ingredients to the press surface. In this way the efficiency of the release agent and the release properties of the rolls are improved. Further, less deposits are formed on the roll surface.
L'invention porte sur un agent de séparation pour rouleaux, notamment pour les rouleaux utilisés dans l'industrie papetière. Ledit agent qui se présente sous forme de microémulsion contient un ou plusieurs composants actifs et facultativement des additifs usuels. Les compositions adéquates, pratiquement exemptes d'eau, n'en reçoivent qu'avant usage. La microémulsion formée au moins de manière intermédiaire est instable lorsqu'elle est diluée dans l'eau à la concentration d'application, d'où une application facile et homogène des ingrédients à la surface de la presse. De ce fait, l'efficacité de l'agent de séparation et les propriétés de séparation des rouleaux s'en trouvent améliorées, tandis que les dépôts à la surface des rouleaux sont réduits.
Basstanie Esther
Vanhecke Franck
Betzdearborn Inc.
Borden Ladner Gervais Llp
Hercules Incorporated
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