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Sizing agents alkaline conditions

The pH of the system and the acidity/alkalinity tend to decide the type of sizing agent reqnired. In general rosin size tends to be favonred in acidic conditions and ASA, or AKD, sizing in alkaline conditions. [Pg.82]

The most commonly used sizing agents today are rosins, commonly used in acidic papermaking systems, and synthetic sizing agents such as alkyl ketene dimer (AKD) and alkenyl succinic anhydride (ASA), as shown in Figure 7.18. The latter two components are suitable for papermaking processes under neutral and alkaline conditions. [Pg.140]

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