Dry Strength Additive Polyacrylamide
Anionic polyacrylamide emulsion increases paper dry tensile strength and burst resistance during sheet formation. Classified HTS 3809.92.5050 as paper finishing preparation improving machine direction strength. Essential for linerboard and sack paper production.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If bulk polyacrylamide, not paper-formulated
Acrylic polymers without paper-specific additives classify as plastics.
If emulsifier content dominates
Surface-active preparations may supersede finishing agent function.
Not sure which classification is right?
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Import Tips & Compliance
• Document charge density (anionic degree) for Customs verification; include shear stability test results; avoid bulk polymer imports which classify under Chapter 39
Related Products under HTS 3809.92.50.00
AKD Wax Emulsion Sizing Agent
Alkyl ketene dimer (AKD) wax emulsion is a hydrophobic sizing agent applied during paper manufacturing to impart water resistance to paper surfaces. It falls under HTS 3809.92.5050 as a finishing preparation specifically used in the paper industry for surface treatment. This product prevents ink feathering and improves print quality on writing and packaging papers.
Cationic Starch Retention Aid
Modified cationic starch solution used in paper mills to improve fiber and filler retention during the papermaking process. Classified under HTS 3809.92.5050 as a paper industry finishing preparation that enhances sheet formation and reduces white water solids. It improves paper strength and machine efficiency.
Synthetic Wet Strength Resin
Polyamide-epichlorohydrin (PAE) resin applied to paper during manufacturing to maintain strength when wet. Falls under HTS 3809.92.5050 as a paper finishing agent essential for tissue, towel, and liquid packaging papers. Provides permanent wet strength without affecting paper recyclability.
Fluorescent Whitening Agent for Paper
Optical brightening agent (OBA) containing stilbene derivatives that absorb UV light and emit blue light for paper brightening. HTS 3809.92.5050 classification for paper industry finishing preparations enhancing visual brightness without affecting paper structure. Used in printing and writing papers.
Defoamer Silicone Emulsion for Paper
Silicone-based antifoam emulsion controls foam generation in paper mill white water systems and size press applications. HTS 3809.92.5050 as paper finishing preparation preventing process disruptions and defects. Maintains consistent paper quality and production rates.
Paper Surface Sizing Polymer
Styrene-acrylic copolymer emulsion applied at size press for paper surface strength and printability. Falls under HTS 3809.92.5050 as paper finishing agent improving coating holdout and ink receptivity. Used on coated publication and board grades.