VISIBLE-LIGHT CURABLE EPOXY SYSTEM WITH ENHANCED DEPTH OF CURE

• Main Authors: KAISAKI, DAVID A, DEVOE, ROBERT J, SCHULTZ, WILLIAM J, MITRA, SUMITA B
• Format: Patent
• Language: English; French
• Published: 08.05.2007
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; HYGIENE; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

A visible-light photopolymerizable composition comprising a) a cationically polymerizable epoxy resin, b) a hydroxyl-containing material, c) an aryliodonium salt and d) a visible-light sensitizer that is an alpha-dicarbonyl compound having an extinction coefficient less than about 1000. Particularly, preferred compositions of the present inventi on are dental materials.