Polyphase CST Troy Preservatives / Biocides / Fungicides Acrylics/ Acrylates ADHESIVE SEALANT Polyphase CST Polyphase CST provides improved biological efficacy with color stability. Polyphase CST has demonstrated improved compatibility with polymer emulsion-based formulas (incuding acrylic, vinyl acrylic, and styrenated acrylics) and is a cost-effective system that frequently provides protection at lower use levels than competitive products. Preservative. Used in adhesives and sealants. Provides improved biological efficacy, color stability and improved compatibility with polymer emulsion-based formulas, incuding acrylic, vinyl acrylic, and styrenated acrylics. Offers protection at low use level.