Retanning and filling agent for all leathers – based on dyciandiamide SYNTAN DF 585 is a retanning and filling agent for all leathers, based on dyciandiamide. Suitable applications include: shoe upper, bag leather, upholstery. Characteristics SYNTAN DF 585 gives a very notable improvement in grain tightness. It levels out fullness differences in the various parts of a hide. The leathers have a full and round, medium soft handle. TDS request Request a TDS of product TDS Sample request Request a sample of product Request Part of Smit’s Renewability range Discover our bio-based wet end solutions for excellent leather performance. Download brochure