ALKYL OLEATE SUCCINIC ANHYDRIDE AS A NEW MODIFICATION OF INTERNAL PAPER SIZING AGENT

There are two common synthetic sizing agents which are used in neutral-alkaline paper making: alkyl ketene dimer (AKD) and alkenyl succinic anhydride (ASA). However both show many disadvantages on application. Using alkyl oleate enabled us to improve the performance of the sizing chemicals. Two alkyl oleate succinic anhydride: methyl and ethyl oleate succinic anhydrides have been prepared, converted to aqueous emulsion and used in sizing of paper hand sheets at laboratory scale. The sizing performance of each was compared with that of the commercial sizing agents.