FluorAcryl 1939A is a 70% solids bifunctional perfluoropolyether acrylate additive that is compatible with most polar formulations. Cationic cure of 1939 adds lubricity, repellency and weather resistance. FluorAcryl-1939 was first commercialized in the year 2005. Films and coatings made with FluorAcryl-1939 may be expected to provide long-lasting antifouling and easy cleaning from fingerprints and other contaminants. Compatible with many monomers, oligomers and solvents, the properties of 1939 can be modified to provide increased processability, hardness, abrasion resistance, elasticity and/or adhesion to metals, glass and plastics. When added and cured into other coatings, inks and paints, 1939 provides water, oil, and stain repellency.
Size: 100 grams (~125 ml) Application methods: Screen printing, pad printing, direct or reverse roll, offset gravure, metering rod, slot die, knife over roll, air knife, curtain, immersion, spin, dipping, etc. Curing: 12W/sqcm @ 385/395/405 nm for 3 seconds Color: Clear - Cloudy Water contact angle: over 100° Oil contact angle: over 60°
When used as an additive at low dosage (0.5% - 5% w/w) in another UV-curable formulation, 1939 does not require special curing conditions. When a high content (25% to 90% w/w) of 1939 is desired, a suitable photoinitiators (such as Speedcure TPO-L) and reactive diluents (such as Sartomer SR351/TMPTA, SR238/HDDA and/or SR285/THFFA) may be needed. After diluting the mixture with butyl-acetate, ethyl-acetate or similar solvent, apply the mixture on the substrate using spray, roll, doctor blade, meter rod, etc. to obtain a coating of the desired thickness. After the solvent has evaporated, irradiate with LED lights (12W/sqcm @ 385/395/405 nm) for 3 seconds with the light source 4 mm from the mask (alternatively, if a MicroCure CTO-46 is used photo-initiator, irradiate with a medium pressure vapor mercury lamp (220-320 nm UV, if possible under inert nitrogen) to a pencil hardness of greater than #2 at 3 Joules per square centimeter for 60 seconds).