Patent ID: 6265459
Filing Date: 2001-07-24
Classification: C08G,G03F

Abstract:
A method comprising the step of adding an accelerator to increase the rate, or reduce the temperature, of cure of an energy-polymerizable composition wherein the composition comprises a cationically curable material and at least one salt of an organometallic complex cation, wherein said cation contains at least one carbon atom bonded to a transition metal atom, and wherein said accelerator, or an active portion thereof, comprises at least one compound selected from classes 1 and 2whereinclass 1 comprises compounds represented by the following formula ##STR3##wherein molecules of Class 1 comprise dihydroxy aromatics wherein each R.sup.1, independently, can be hydrogen or a radical moiety selected from substituted and unsubstituted alkyl, alkenyl, alkynyl, and alkoxy groups containing from 1 to 30 carbon atoms, or groups of one to four substituted or unsubstituted aromatic rings wherein two to four rings can be fused or unfused, or two R.sup.1 s taken together can form at least one ring which is saturated or unsaturated and the ring can be substituted or unsubstituted and wherein when the molecule contains more than two aromatic hydroxy groups, at least two of the hydroxy groups are adjacent to each other andclass 2 comprises compounds represented by the following formula ##STR4##wherein molecules of Class 2 comprise those compounds having a .beta.-diketone moiety wherein each R.sup.2 can be the same or different and, excluding hydrogen, can be the same as R.sup.1 described for the Class 1 accelerators, and wherein R.sup.3 can be a substituted or unsubstituted alkyl or aryl group.