Hydak® L-series hydrophilic coatings are based on a non-crosslinked form of Hyaluronic Acid (HA). This technology has applications among a gamut of fields including ophthalmology, urology, cardiology, endoscopy, and others. In particular, this coating is ideal for single-use devices that require extremely low coefficients of friction.
These coatings are composed of two layers: a polyacrylate base coat and a proprietary non-crosslinked hyaluronic acid top coat covalently bonded to the base coat. The combination can be applied to a multitude of different substrates. The total thickness of both layers can be as thin as 2 to 3 µm when dry, swelling to 10 µm when wet. The covalent bonding of the top coat to the base coat ensures consistent quality and physical properties.
Unlike some other coating systems, Hydak® is applied via dipping, injecting, spraying, or wiping and is heat cured at temperatures from 40 to 70°C. There is no photo curing equipment necessary. This produces several advantages:
- Hydak® coatings are easily applied to lumens
- UV exposure of the surface is not required
- Heat-sensitive substrates are easily accommodated with
lower curing temperatures
- Heat curing allows for uniform coating properties through
the entire cross section