Fluorinated Anti-smudge Coating KY-100 Series KY-100 Series are coating materials consist of organofluorine group and reactive silyl group. When very thin coatings with KY-100 Series are applied onto various substrates, excellent surface characteristics are obtained. Features of KY-100 Series Anti-smudge A smooth fluorinated layer is formed on the surface and prevents stains with dirt. Removability of fingerprint Persistent fingerprint can be removed easily by wiping. Water and oil repellency Repels water/oil and keeps substances clean. Low dynamic friction Low friction makes wiping off easy and protects surfaces from scratches. Very thin layer Preserves substance’s optical properties and texture. Coating layer formation mechanism Applications Anti-smudge, water/oil repellency, fingerprint removability and low dynamic friction are realized by formation of a smooth fluorinated layer on various surfaces such as inorganic anti-reflective coating (SiO2), glass, and hard coating layer. Optical lens Displays Anti-reflective film Hardcoated film China and porcelain Electronic devices Glass Mirror Molding Marker ink repellency test illustrates the effect of the coating Treatment with KY-164 provides marker ink repellency and ease of ink wiping off. ■Properties Test item Unit Standard Soluble in common solvents KY-164 KY-108 Viscosity at 25ºC mm²/s 1.1 1.2 Specific gravity at 25ºC - 1.46 1.43 Solid content wt% 20 20 Solvent - Novec HFE 7200 (3M) Novec HFE 7200 (3M) Applicable thinner - Fluorinated solvents Common solvents (IPA, MEK, etc.) Contact angle Water deg 110 115 Oleic acid deg 70 78 Sliding angle Oleic acid deg 2 10 Release force * 1 N/19mm 0.10 1.20 Antifouling Marker ink repellency - ◎ 〇 Ease of fingerprint wiping off - Completely removed within 2 wipes Completely removed in 3 to 5 wipes Dynamic friction coefficient * 2 - 0.08 0.30 Test conditions Coating process: Dipping (soaking for 10 sec → pull up at the speed of 150mm/min → cure) Solid content of coating solution: 0.2% [thinner: Novec 7200 (3M)] Substrate: Slide glass Cure condition: 40ºC/80%RH for 8hr *1 No.31B adhesive tape (Nitto Denko, 19mm width); Adhesive tape pressing at 20g/cm² for 24hr; Peal off with 180º direction and 300mm/min speed. *2 BEMCOT unwoven cloth (Asahi Kasei, 10mm X 30mm); 100g load ■Coating process