Anionic PAM for Paper Retention & Drainage
CAS Number: 9003-01-4
Anionic polyacrylamide with low-to-medium charge density (10–30% hydrolysis) and MW 5–12 million Da, designed for use as a retention and drainage aid in paper and board manufacturing. Functions as part of a microparticle retention system to improve first-pass retention, paper formation, and wire drainage rates.
Technical Specifications
| packaging | 25 kg kraft bags |
| appearance | White granular powder |
| solid content | ≥ 88% |
| charge density | Low-medium anionic |
| molecular weight | 5–12 million Da |
| hydrolysis degree | 10–30% |
Applications
- Paper and board retention and drainage aid
- Fine particle and filler retention (PCC, clay, titanium dioxide)
- White water clarification in paper mill closed loops
- Microparticle retention system (with bentonite or colloidal silica)
- Newsprint, packaging board, and tissue paper manufacturing
- Broke and recycled fiber treatment
Key Features
- Low-medium anionic charge compatible with cationic starch for dual-component retention
- Wide MW range (5–12 million Da) selectable to match forming speed and fiber type
- Improves first-pass retention of fines and fillers, reducing white water load
- Enhances drainage rate on fourdrinier and gap former machines
- Compatible with bentonite and colloidal silica microparticle retention programs
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