ANTIMONY-FREE PHOTOCURABLE RESIN COMPOSITION AND THREE DIMENSIONAL ARTICLE

• Main Authors: MESSE, Laurence, PATEL, Ranjana, C, LEYDEN, Richard, FONG, John, Wai, CHAPELAT, Carole
• Format: Patent
• Language: English; French; German
• Published: 30.05.2018
• Subjects: ADHESIVES; ADVERTISING; APPARATUS SPECIALLY ADAPTED THEREFOR; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE; CASTING; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; CINEMATOGRAPHY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; CRYPTOGRAPHY; DIAGRAMS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; DISPLAY; DYES; EDUCATION; EDUCATIONAL OR DEMONSTRATION APPLIANCES; ELECTROGRAPHY; FILLING PASTES; FOUNDRY MOULDING; GLOBES; HOLOGRAPHY; HUMAN NECESSITIES; HYGIENE; INKS; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MATERIALS THEREFOR; MEDICAL OR VETERINARY SCIENCE; METALLURGY; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORIGINALS THEREFOR; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; PLANETARIA; POLISHES; POWDER METALLURGY; SEALS; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention provides a low viscosity photocurable composition including (i) a cationically curable component (ii) a free radically active component (iii) an antimony-free cationic photoinitiator (v) a free radical photoinitiator, and (vi) a toughening agent. The photocurable composition can be cured using rapid prototyping techniques to form three-dimensional articles which can be used in various aerospace and investment casting applications.