Cationic Rosin Sizing Agent

Cationic Rosin Sizing Agent – Reliable Internal Sizing for Acidic and Neutral Papermaking

Cationic Rosin Sizing Agent is a modified rosin-based internal sizing chemical designed for acidic to neutral papermaking systems. It provides excellent hydrophobicity and improves paper water resistance, surface strength, and printability by forming a stable rosin–alum complex within the fiber network.

Compared with traditional anionic rosin sizes, this product features a cationic modification that enhances retention on fibers and improves sizing efficiency, even under conditions with lower aluminum sulfate dosage. It ensures uniform distribution, stable performance, and reduced sizing reversion during storage or high-speed paper production.

Key Features & Advantages:

• Excellent internal sizing performance and water resistance

• Strong fiber affinity and high retention efficiency

• Effective under acidic and weakly neutral conditions

• Improved sizing stability and reduced dosage of alum

• Compatible with various pulps and papermaking additives

Applications:

• Printing and writing paper

• Cultural and offset paper

• Packaging board and specialty grades

• Suitable for high-speed paper machines