(1) One polymer that is widely used for extruded balloon catheters is polyamide (nylon).(2) Nylon 66 is a polyamide based on hexamethylene diamine and adipic acid.(3) This molecular weight is relatively low and not far from the critical molecular weight of polyamides , which is generally near 15,000 g/mole.(4) Generically known as a group of polyamides , nylon is chemically distinguished by its amide linkages to two aromatic rings.(5) Examples of polymers produced in this way include polyesters, polyamides , polyurethanes, polyethers, and polysulfones.
