As an important group of paper chemicals, internal sizing agents can mainly be divided into two dispensable groups comprising acidic sizing agents and neutral-to-alkaline sizing agents.
In recent years have given AKD and fiber degeneration reaction AKD made fiber for the pulp sizing agent to reduce hydrolyzate and enhance sizing effect.
The results proved that the use of the AGP as a surface sizing agent can improve the water-resistance of the paper and reduce the use of the internal sizing agent.