Synolite 2710-U-2 Unsaturated polyester based on tetrahydrophthalic anhydride DSM Polyester >> Unsaturated >> Aromatic SEALANT >> Putty Synolite 2710-U-2 is an unsaturated polyester based on tetrahydrophthalic anhydride, dissolved in styrene. The resin is pre-accelerated with polymeric amines, has a medium viscosity, and a high reactivity. Synolite 2710-U-2 yields highly flexible polymers, and is applied for highly filled knifing fillers for use on metal, wood and mineral substrates. In putties for car refinishes, Synolite 2710-U-2 is applied as the flexible component in blends for soft sanding pastes. This resin is cold-curing, even around 0°C. Fillers based on Synolite 2710-U-2 cure fully when applied in both thick and thin layers. They can be made harder by the addition of, for example, Synolite 9248-U-3 or Synolite 6494-U-2. Storage stability of putties made from Synolite 2710-U-2 is excellent. Fillers based on Synolite 2710-U-2 show very good adhesion to various substrates, including mild steel, galvanized steel, aluminium, wood, and polyester. Suitable extenders are talc, dolomite/calcite, crystalline chalk and barytes with a low iron content. Talc is applied as the main component because it improves sanding properties, and the adhesion to the substrate. In addition, the more spherical extenders such as dolomite, chalk and barites ensure dense packing. Unsaturated polyester based on tetrahydrophthalic anhydride pre-accelerated with polymeric amines. Used in putties for car refinishes. Provides very good flexibility. Possesses medium viscosity and high reactivity. Shows very good adhesion to various substrates, including mild steel, galvanized steel, aluminium, wood, and polyester. Can be used in combination with extenders such as talc, dolomite/calcite, crystalline chalk and barytes with a low iron content.