Olsano uses Nylon 6.6, a high-quality nylon fibre with excellent heat resistance, for its kitchen utensils. Chemically and physically speaking, Nylon 6.6 is a polyamide from the Nylon class. This polymer is obtained through two polymerization reactions: Step-growth polymerisation and Condensation polymerisation. Nylon 6.6 consists of adipic acid and hexamethylenediamine, for a total of 12 carbon atoms in each repeating unit. This polymer has a melting point of 268 °C which is very high for synthetic fibres. This makes it extremely heat and friction resistant, allowing it to tolerate the retention torsion through heat-setting. Another property that makes it very resistant is the structure of its molecular chain with several hydrogen bonds. Another property that makes it very resistant is the structure of its molecular chain with several hydrogen bonds. The dense structure of its small and equidistant pores makes Nylon difficult to dye, but once dyed, the colour fastness is superior and hardly tends to fade due to external agents. Among the other properties of Nylon 6,6 are therefore high mechanical strength, great rigidity and good heat stability. It is used for electro-insulating elements, pipes, profiles and various machine parts. Other most common applications are carpet fibres, clothing, airbags, tyres, clamps, ropes, conveyor belts and hoses.