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UCAR Latex 9176 In order to attain high levels of performance in sealant applications, it is necessary to impart elastomeric properties to the sealant. Conventional acrylic latex polymers have limited elastomeric properties because only a small amount of crosslinking between polymer chains can be achieved without interfering with film coalescence. UCAR™ Latex 9176 features an ambient crosslinking mechanism that imparts the required interconnections between polymer chains without interfering with film formation. The result is a latex sealant
binder that:
- Wets typical architectural substrates to attain high adhesive bonding;
- Wets typical pigments well and can be used at high P/B ratio;
- Consists of a low Tg polymer with excellent low temperature flexibility;
- Cures within several days to provide a very tough, low tack polymer;
- Has exterior performance typical of an acrylic polymer with reduced dirt pickup;
- Can also be cured relatively rapidly with the application of heat.
UCAR Latex 9176 can be formulated into both translucent and pigmented sealants that easily pass the requirements of the ASTM C-920, Class ± 25% standard. The crosslinking mechanism is pH dependent so that the sealants have excellent shelf stability under alkaline conditions and then cure when the volatile base used is released during the film formation and drying process.
Typical Properties(1)
| Property |
Value |
| Total Solids, % by weight |
61.0 |
| Particle Size, microns |
0.35 |
| Viscosity, cP |
500 |
| Weight per Gallon, lb |
 |
Latex |
| Polymer |
|
8.65
9.4 |
| pH Value |
8.0 |
(1) The data provided for these properties are typical values, intended only as guides, and should not be construed as sales specifications.
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