Polyamidoamine-Epichlorohydrin Resin (PAE Wet Strength Resin)
CAS Number: 25152-84-5
Polyamidoamine-epichlorohydrin (PAE) resin is the leading wet strength resin for papermaking, providing permanent wet tensile and burst strength to paper and tissue products. It forms covalent cross-links with cellulose under curing conditions, ensuring paper retains its mechanical strength when wet. PAE is non-formaldehyde, environmentally acceptable, and effective across a wide pH range.
Technical Specifications
| pH | 3.5–5.5 |
| appearance | Clear to slightly hazy amber liquid |
| solid content (%) | 12.5±2 |
| viscosity (mPa·s, 25°C) | 20–100 |
Applications
- Permanent wet strength in tissue and towel paper
- Wet strength for food packaging and cup stock
- Saturating grades and industrial filter papers
- Wet strength in printing and writing papers
- Map, currency, and specialty wet-strength papers
Key Features
- Permanent wet strength without formaldehyde emission
- Effective over broad pH range (4–9)
- Self-crosslinking during drying and curing on machine
- Repulpable under alkaline conditions for recyclability
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CAS Number
25152-84-5
Category
Paper / Pulp ChemicalsAvailability
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