850G-1040 Water-Based Surface Chemistry Technology
Next-Generation Surface Chemistry
Miller-Stephenson Medical in unison with Chemours™ has developed a series of water-based, medical coatings which offer next-generation performance, surface adhesion, durability, and superior surface smoothness all while eliminating the use of chromium VI. Its lower hazardous classification and stability at ambient temperature also help with handling, application pot-life, and storage conditions. The 850G-104X not only provides our smoothest surface finish but does so with an average film thickness of only 6-12 microns.
Coating Equipment & Application Recommendations
All of our PTFE coatings can be applied via spray, dip or spool-to-spool methods. Proper pre-coating wire cleaning treatment and post-application curing equipment is critical to guarantee performance and durability. Acceptable curing equipment includes high-temperature ovens which can safely maintain temperatures of 246 °C (475 °F) or utilize IR ovens. This will ensure proper sintering of the coatings onto the wire and promote the best surface characteristics that can be achieved.
Coating Property Data
|Typical Film Thickness||6 – 12 microns|
|Coverage,2 m2/kg (m2/L) (ft2/gal)||4.44 (4.88) (199)|
|Viscosity,3 centipoises||400 – 600|
|Volume Solids, %||10.2 – 14.2|
|Weight Solids,4 %||18.0 – 21.0|
|Density, kg/l (lbs/gal)||1.10 (9.17)|
|VOC content, U.S. lb/gal (g/L) (less exempt)|
|As Packaged||0.401 (48.0)|
|Less Exempt||3.93 (472)|
|Maximum In-Use Temperature, °C (°F)||260 (500)|
|Flash Point, SETA closed cup, °C (°F)||>93 (200)|
ASTM & ISO Standards Met
- ASTM 1894 Coefficient of Friction
- ASTM D3359 Adhesion Test
- ISO 7802 Wire Wrap Test
- ISO 11070 Corrosion Resistance Test
- Coated smooth stainless steel panels passed Adhesion test, ASTM-3359
- Coated stainless steel catheter guidewires passed flexibility/adhesion tests, ISO 7802 Annex F wrapping test
- Coated stainless steel catheter guidewires passed corrosion resistance, ISO11070 Annex B, saline soak test
All Miller-Stephenson’s formulations generate very uniform thin films which exceed all ISO and ASTM requirements.
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