Patent ID: 6153661
Filing Date: 2000-11-28
Classification: C07F,C08F,C08G,G03F

Abstract:
A polymerizable or crosslinkable composition comprising:(a) at least one polymerizable or crosslinkable monomer or polymer comprising epoxy group(s) or vinyl ether group(s); and(b) at least one initiator salt selected from onium borates and borates of an organometallic complex, the cationic moiety of which comprising:(1) an onium cation having the formula (I):[(R.sup.1).sub.n --A--(R.sup.2).sub.m ].sup.+ (I)in which A is an element of Groups 15 to 17 of the Periodic Table; R.sup.1 is a C.sub.6 -C.sub.20 heterocyclic or carbocyclic aryl radical; R.sup.2 is R.sup.1 or a linear or branched C.sub.1 -C.sub.30 alkenyl or alkyl radical, said radicals R.sup.1 or R.sup.2 optionally being substituted by at least one C.sub.1 -C.sub.25 alkoxy, C.sub.1 -C.sub.25 alkyl, nitro, chloro, bromo, cyano, carboxyl, ester or mercapto substituent; n is an integer ranging from 1 to v+1, with v being the valence of A; and m is an integer ranging from 0 to v-1, with the proviso that n+m=v+1;(2) an oxoisothiochromanium cation; or(3) an organometallic cation having the formula (II):(L.sup.1 L.sup.2 L.sup.3 M).sup.q+ (II)in which M is a metal of Groups 4 to 10 of the Periodic Table; L.sup.1 is a ligand associated with the metal M via .pi. electrons and is an .eta..sup.3 -alkyl, .eta..sup.5 -cyclopentadienyl or .eta..sup.7 -cycloheptatrienyl ligand or an .eta..sup.6 -aromatic compound selected from among the optionally substituted .eta..sup.6 -benzene ligands and compounds having from 2 to 4 condensed ring members, each ring member contributing to the valence shell of the metal M via 3 to 8.pi. electrons; L.sup.2 is a ligand associated with the metal M via .pi. electrons and is an .eta..sup.7 -cycloheptatrienyl ligand or an .eta..sup.6 -aromatic compound selected from among the optionally substituted .eta..sup.6 -benzene ligands and compounds having from 2 to 4 condensed ring members, each ring member contributing to the valence shell of the metal M via 6 or 7.pi. electrons; and L.sup.3 represents from 0 to 3 identical or different ligands associated with the metal M via .sigma. electrons and is CO or NO.sub.2.sup.+ ligands, the total electron charge q of the complex to which L.sup.1, L.sup.2 and L.sup.3 contribute and the ionic charge of the metal M being positive and equal to 1 or 2; andthe anionic borate moiety of which having the formula:[BX.sub.a R.sub.b ].sup.-in which a is an integer ranging from 0 to 3 and b is an integer ranging from 0 to 4 and a+b=4; the symbols X are each independently a halogen atom or an OH functional group with the proviso that up to two OH functional groups are present at one time; and the symbols R, which may be identical or different, are each a phenyl radical substituted by at least one electron-withdrawing substituent or by at least two halogen atoms, or an aryl radical containing at least two aromatic ring members, or such aryl radical bearing at least one electron-withdrawing substituent.