ACRONAL 4888
ACRONAL 4888
ACRONAL® 4888 is a self-crosslinking styrene-acrylic binder that contains acrylonitrile and is used to bring strength to nonwovens used in commercial roofing applications. The unique properties of ACRONAL 4888 are crucial when working with polyester nonwovens, especially when producing asphalt shingles and build-up roof (BUR) membranes that require binding strength, flexibility, and the ability to stand up to hot asphalt. ACRONAL 4888 provides excellent adhesion to polyester and glass fibers, high heat resistance, and outstanding thermal dimensional stability.
Applications
- Ideally suited for use in commercial roofing applications
- Excellent binder for polyester nonwovens, including recycled polyethylene terephthalate (PET)
For more information on this product, check out the Product Value Card
Features & Benefits
- Water-based self-crosslinking binder
- Good adhesion to polyester and glass fibers
- High heat resistance
- Outstanding thermal dimensional stability
Performance Data
Properties
| Typical Properties | Value |
| Solids Content | ~ 50.0% |
| pH | ~ 7.5 |
| Viscosity at 23°C (Brookfield RV, Spindle #2, at 20 rpm) | ~ 60 – 1,000 cps |
| Other Properties of the Dispersion | Value |
| Density | 1.05 g/cm3 |
| Type of Dispersion | Anionic |
| Freeze-Thaw Stability | Not stable |
| Properties of the Film | Value |
| Appearance | Colorless, transparent |
| Surface | Tack-free |
| Glass Transition Temperature Tg (DSC) | ca. 31°C |
