Surface Sizing Agent ST-9 is a new biological agent originated from Japan, which makes breakthroughs after more than 20 years of deep cultivation. with characteristics like excellent printing surface strength, non-toxic, tasteless, non-corrosive, ST-9 is the excellent substitute of the traditional phenylpropyl surface sizing agent which can be widely used for culture paper, kraft paper, wall board paper, etc. with world-class quality, ST-9 has originality and uniqueness in the field of papermaking, the dosage (200-250g/ ton of paper) is 1/20 of the normal dosage of phenylpropyl which can save cost significantly.

Physical Property
Appearance: Pale yellowish brown powder

Ionic: anionic

Volatiles: 5.5% or less

Cold & heat-resistant: - 20 to + 40

Shelf life: A year