Welcome to Henan Sinotech!
Chinese english French Japanese Korean Russian

Hydrolyzed Polyacrylonitrile sodium salt Na-HPAN

Na-HPAN is copolymer of several polymers such as acrylamide and sodium acrylate acrylonitrile. soluble in water, and its solution is alkalescent, widely used for water-based drilling fluid loss with some role of viscosifier; In freshwater drilling fluid system, anti-scar can reach 250℃ and is stable.


Specification and performance:

Appearance, Free-flowing powder or granules

Loss on drying, ≤10.0%

Screen margin, ≤5.0%

Residue on ignition, ≤3.0%

Ammonium, ≥5.5%


Technical index

Freshwater system

Salt water system

Base mud

Apparent viscosity, mPa.s



Filtration, mL



Base mud+Na-HPAN

Apparent viscosity, mPa.s



Reduced filtration rate,%




Packing: 25 kgs PE bag.