C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
252/121, 402/263
C08J 3/28 (2006.01) C08F 2/50 (2006.01)
Patent
CA 1159815
A B S T R A C T A new initiator system for radiation curable compositions is dis- closed. In said system there are incorporated: a) a compound of the formula: Image where R1 = H or a substituted or unsubstituted alkyl group having 1 to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms, a cycloalkyl or cycloalkenyl group having 5 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, a furfuryl group or the group - ? - O - Z, where Y represent a methyl group and Z an alkyl group having 2 to 4 carbon atoms or Y and Z together form a 1,3- or 1,4- alkylene group having 3 or 4 carbon atoms which is substituted or not with an alkoxy group having 1 to 4 carbon atoms; R2 = a substituted or unsubstituted alkyl group or alkenyl group having 4 to 20 car- bon atoms, a cycloalkyl group or cycloalkenyl group having 5 to 8 carbon atoms, an alkaryl group having 4 to 16 carbon atoms in the alkyl group or a furfuryl group; R3 and R4 may be the same or different and represent a hydrogen, a chlorine or a bromine atom or a phenyl group, a substituted or unsubstituted alkyl group or alkoxy group having 1 to 4 carbon atoms, or a dialkyl amino group of which the alkyl groups have 1 to 4 carbon atoms and may be substituted wit a hydroxyl group, and b) a synergistic amount of a Na, K and/or Li-salt of an organic acid that is compatible with the curable compositions; and optionally some amount of solvent c for component b. The initiator system cures rapidly and has good storage stability.
374025
de Klein Willem J.
Giezen Egenius A.
Hageman Hendrik J.
Akzo N.v.
Marks & Clerk
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