RHOPLEX® PR-33

• 100% acrylic composition
• Unique ambient crosslinking technology provides:
• Excellent tannin, marker, water, and nicotine stain blocking
• Enhanced adhesion to a variety of repaint and new substrates
• Wide formulation latitude provides performance at high PVC
• Excellent flash rust and nail head rust resistance
• Excellent exterior crack resistance over dimensionally unstable substrates and weathered wood
• Good zinc oxide stability
• Low VOC

Exterior Durability
With over five years of exterior exposure data, the all-acrylic composition ofRHOPLEX® PR-33 Emulsion Polymer provides excellent exterior durability in primer formulations.
Figure 1 shows the outstanding crack resistance, over weathered white pine, of a primer based on RHOPLEX® PR-33 Emulsion Polymer.

Crack Resistance of Primers on 3-Month Weathered White Pine Exposed at South 45

Exterior Resistance Properties
Table 1 displays the excellent exterior tannin stain blocking, rust resistance and blistering characteristics of RHOPLEX® PR-33 Emulsion Polymer versus a competitive latex vehicle and a self-primed topcoat.

Table 1: Exterior Performance Comparison of Partners 6 Months Exposure (00AJ)

Enhanced Adhesion
Figure 2 shows the enhanced wet adhesion of RHOPLEX® PR-33 Emulsion Polymer, over a variety of substrates, compared to a conventional acrylic primer. The primers were tested in a 31 PVC/35 VS formulation after one week dry at 25°C and 50% RH. The primers were placed in a streaming fog box for five hours prior to testing.

Figure 2: Wet Adhesion of RHOPLEX® PR-33 Emulsion Polymer

Another area where RHOPLEX® PR-33 Emulsion Polymer excels in stain blocking performance is over many common household stains.
Table 3 shows the comparative stain blocking performance of RHOPLEX® PR-33 Emulsion Polymer over a variety of difficult household stains. These stains include nicotine, water, tannin, grape juice, coffee and lipstick.

Household Stain Blocking Performance

Ratings: 10 = Best, no visible stain 0 = Complete bleen through
¹ One coat of primer applied via drawdown and allowed to dry 2 hours. One application of flat PVA topcoat.
² Two coats of respective primer and one application of flat PVA topcoat. One hour to dry between coats.
³ Primer applied at 350 ft²/gal., dry 4 hours, topcoat with G-08-2 exterior acrylic semigloss.

Based on similar materials, this product is not expected to be toxic via single acute oral or dermal exposure. It may be a mild to moderate skin and eye irritant.