Example 6

0.45 g (0.05 mole %) of 4QP was added to 450 g of PVAc under agitation at 1100 rpm. Let the mixture mix for 5 min to ensure complete dissolution of 4QP. Then 40% phosphoric acid was added to the mixture at room temperature to adjust the pH to 2. Then mixing continued for 1 hour and the mixture was left for 3 days without agitation. Then mixture was then quenched with 10% ammonia water to pH of 7 under agitation to complete the addition reaction.

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