DuPont Industrial Cellulosics by ChemPoint | Applications

Pulp and Paper

Pulp and Paper

Any improvements on making paper more quickly or more efficiently dramatically impact a paper mill’s bottom line.  POLYOX™ water-soluble resins serve as process aids with primary roles as adhesives and flocculants.  It produces benefits such as high degree of wet-tack with dry residue that’s non-tacky.  The higher molecular weight grades have high affinity for a variety of materials and provide efficient flocculation.

In paper manufacturing a broad range of colloidal particles, including fillers, pigments and sizing agents, are added into relatively low solids aqueous suspensions of pulp fibers. It is important that chemical additives, fillers and fibers are retained on the paper machine web during the dewatering process. However, these colloidal particles are often too small to retain on the web during the paper formation. To aid retention, various high molecular weight water-soluble polymers are being applied as flocculants. Poly(ethylene oxide) is an effective retention aid, especially for those pulps which contain anionic electrolytes that interfere with common cationic flocculants. 

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Water-Soluble Polymers with Added Functionality

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POLYOX™ Water-Soluble Polymers are non-charged polymers used in paper applications because of their high affinity for mechanical pulps, fillers and pitch. Their use in filler retention applications has become increasingly important due to the demand for high-opacity, lighter-weight paper and the growing cost of pulps.

POLYOX™ is effective as a retention aid in newsprint and corrugated media to flocculate the fines, fibers, and fillers into the pulp and prevent them from being drained away with the water.

POLYOX™ is used in the treatment of effluent as it improves the removal of lignin from process water. When added to the filtrate, it forms complexes via hydrogen bonding and yields a sludge that is easily extracted by floatation or screening.

POLYOX™ serves as an outstanding formation aid in tissue-making processes where it acts as a thickener and is used to disperse the fibers evenly. As a tissue paper “formation aid” and dispersant POLYOX™ helps improve softness and runability.

High molecular weight POLYOX™ Water-Soluble Polymers are nonionic polymers used as retention and formation aids in various paper productions. Given its high affinity for various substrates, POLYOX™ is used for the process water treatment in paper mills.


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