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LR-S165/S165L Ambient-Curing Methyl Phenyl Silicone Resin
Silfluo LR-S165/LR-S165L is an ambient-curing methyl phenyl silicone resin produced by copolymerization of methyl, phenyl, and functional silane monomers, supplied as a 50% solids solution in toluene-containing solvent. The resin crosslinks at room temperature without oven baking, and achieves full crosslinking in 1 hour at 180°C when accelerated cure is required.
Phenyl and methyl substituents on the siloxane backbone provide continuous service resistance to 200–300°C. When formulated with leafing aluminum powder at a 4:1 resin-to-pigment ratio, the cured coating withstands 500 ± 10°C for 3 hours without peeling, cracking, or blistering — relevant for exhaust system, boiler, and industrial furnace coating applications where oven baking of the coated part is not feasible.
