Urea-Formaldehyde Resin (Paper Wet Strength Grade)
CAS Number: 9011-05-6
Urea-formaldehyde (UF) resin is a temporary wet strength resin used in papermaking where controlled wet strength and repulpability are required. It provides good initial wet tensile strength economically and is commonly used in tissue paper, toweling, and industrial absorbent products. The wet strength effect diminishes with prolonged water soaking, facilitating recycling and repulping.
Technical Specifications
| pH | 7.5–9.5 |
| appearance | Clear colorless to pale yellow liquid |
| solid content (%) | 50±2 |
| free formaldehyde (%) | ≤ 0.5 |
| viscosity (mPa·s, 25°C) | 50–300 |
Applications
- Temporary wet strength in facial tissue and toilet paper
- Industrial wipes and absorbent paper products
- Fluff pulp products requiring controlled wet integrity
- Agricultural and horticultural paper applications
- Medical and hygiene paper products
Key Features
- Temporary wet strength enabling easy repulping and recycling
- Economical cost compared to PAE wet strength resin
- Compatible with standard wet-end additives
- Adjustable wet strength level by dosage control
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