US 7,482,392 B2
	White solid photoinitiator in the form of powder and preparation thereof
Gabriele Norcini, Comabbio (Italy); Stefano Romagnano, Gallarate (Italy); Marco Visconti, Varese (Italy); and Gluseppe Li Bassi, Gavirate (Italy)
Assigned to Lamberti SpA, Albizzate (Italy)
Appl. No. 10/577,194 PCT Filed Oct. 14, 2004, PCT No. PCT/EP2004/052532 § 371(c)(1), (2), (4) Date Apr. 26, 2006, PCT Pub. No. WO2005/040083, PCT Pub. Date May 06, 2005.
Claims priority of application No. VA2003A0040 (IT), filed on Oct. 27, 2003.
Prior Publication US 2007/0135531 A1, Jun. 14, 2007
Int. Cl. C08F 2/50 (2006.01); C07C 49/00 (2006.01); C07C 49/17 (2006.01); C07C 45/00 (2006.01); C07C 45/46 (2006.01)

U.S. Cl. 522—42  [522/14; 522/103; 522/107; 522/173; 568/337; 568/347]

20 Claims

15. A white solid photoinitiator composition comprising 2-hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)-phenoxy]-phenyl}-2-methyl-propan-1-one wherein the 2-hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)-phenoxy]-phenyl}-2-methyl-propan-1-one is a powder having a melting point of from 96° to 99° C.