Patent ID: 6433036
Filing Date: 2002-08-13
Classification: C08F

Abstract:
A composition comprising:(a) a 2-cyanoacrylate of the formula H2C&boxH;C(CN)â€”COOR, wherein R is selected from the group consisting of C1-15 alkyl, alkoxyalkyl, cycloalkyl, alkenyl, aralkyl, aryl, allyl and haloalkyl groups, (b) a metallocene, and (c) a polymerisingly effective amount of a photoinitiator to render the composition capable of photocuring in air upon exposure to at least one type of electromagnetic radiation selected from the group consisting of visible light, electron beam, x-ray and infrared radiation, wherein the composition has a viscosity from 1-15 cps, and wherein the metallocene component includes materials within the following structure: whereinR1 and R2 may occur at least once on each ring, may be the same or different and may be selected from H; any straight- or branched-chain alkyl constituent having from 1 to about 8 carbon atoms; acetyl; vinyl; allyl; hydroxyl; carboxyl; â€”(CH2)nâ€”OH, wherein n may be an integer in the range of 1 to about 8; â€”(CH2)nâ€”COOR3, wherein n may be an integer in the range of 1 to about 8 and R3 may be H; Li; Na; any straight- or branched-chain alkyl constituent having from 1 to about 8 carbon atoms; â€”(CH2)nâ€², wherein nâ€² may be an integer in the range of 2 to about 8; â€”(CH2)nâ€”OR4, wherein n may be an integer in the range of 1 to about 8 and R4 may be any straight- or branched-chain alkyl constituent having from 1 to 8 carbon atoms; and â€”(CH2)nâ€”Nâˆ’(CH3)3 Xâˆ’, wherein n may be an integer in the range of 1 to about 8 and X may be selected from Clâˆ’, Brâˆ’, Iâˆ’, ClO4âˆ’ and BF4âˆ’; Y1 and Y2 may or may not be present, but when present at least once may be the same or different and may be selected from H, Clâˆ’, Brâˆ’, Iâˆ’, cyano, methoxy, acetyl, hydroxy, nitro, trialkylamines, triaryamines, trialkylphosphines, triphenylamine, and tosyl; A and Aâ€² may be the same or different and may be C or N; m and mâ€² may be the same or different and may be 1 or 2; and Me is selected from Fe, Ti, Ru, Co, Ni, Cr, Cu, Mn, Pd, Ag, Rh, Pt, Zr, Hf, Nb, V and Mo.