Excellent heat stability
Excellent indoor air quality (low VOCs)
Plastisoles are used for a wide variety of products. However, they must have excellent thermal stability, and comply with many standards, including for VOCs, odor and toxicity. In particular, stabilizers have a significant impact on the processibility of plastisols. Plastisols are dispersions of paste PVC resins in plasticizer. As liquids, plastisols allow pressure-free molding at room temperature. Plastisols fuse or gel when heated, and turn into a homogenous melt at about 150 – 210 °C. Liquid BaZn, CaZn stabilizers, pastes and modern solid CaZn stabilizers are widely used for plastisol processing.
Contrary to other PVC processing methods, the required amount of stabilizer is relatively small. Lubricants are normally not used for processing, e.g. release agents can be applied directly to the mold instead of being incorporated into the plastisol. If necessary, both heat and light stability of mixed metal stabilizers can be enhanced by adding epoxidized soya bean oil (ESBO) like Baerostab LSA or epoxidized fatty acid ester like Baerostab LSU. Low-toxicity, low-odor and low-volatility stabilizer systems have become more and more common in plastisol applications, e.g. in flooring, wall coverings, toys, car interiors, etc.