High-performance photopolymer resins for industrial production Evonik entered the 3D printing market for photopolymer resins to upend the limitations which pre- vent the manufacturing industry to widely adopt Additive Manu- facturing as a reliable method for end-use part production. We are committed to support your journey toward Additive Manufac- turing on a production scale with our INFINAM® photopolymer resin product range. With our portfo- lio we are covering many aspects, including properties such as high impact, high-temperature resistance, and even elastomeric behavior. From a chemical point of view, pho- topolymer resins are closely related to irradiation curing coatings, where the coating film can be considered as the first layer of a 3D printed ob- ject. Research in the area had been conducted since the 1970s, but the term stereolithography (SLA) was coined by Chuck Hull in 1984 when he applied for a patent on the pro- cess, which was granted in 1986. The 3D printing process involves curing with a laser, which makes the process rather slow. A significant improvement has been made, when the light source was exchanged by a diode projector, where the full layer is printed in one go. This vat photopolymerization technology is called digital light processing (DLP). Instead of an DLP projector, also an LCD screen can be used as light source. At a TED talk in March 2015, Joseph DeSimone demonstrated a 3D printer prototype using a contin- uous variant of the DLP technology and produced a relatively complex object in less than 10 minutes, 100 times faster than the original SLA technology. Next to increasingly more power- ful DLP projectors of 8k or even Current Emerging Pixel-by-pixel (SLA) Layer-by-layer (DLP/LCD) Continuous (cDLP) Future Volumetric z z z z laser x y projector projector projector > 10 hours 2 to 4 hour(s) 0.5 to1 hour(s) < 0.5 hour(s) Epoxies, acrylates Acrylates, methacrylates Acrylates, methacrylates Acrylates, methacrylates Formlabs Asiga, Nexa3D Carbon LLNL** As photopolymer 3D printing technologies mature, chemistries are changing accordingly