Compositions which undergo light-induced cationic curing and their use
First Claim
1. Composition which undergoes cationic curing with visible light, comprising(a) 0.01 to 8 wt. % of at least one diaryliodonium compound,(b) 0.01 to 8 wt. % of at least one α
- -dicarbonyl compound,(c) 10.0 to 99.9 wt. % of at least one compound containing epoxide groups and/or oxetane groups,(d) 0 to 85 wt. % of modifiers, such as fillers, dyestuffs, pigments, flow improvers, thixotropic agents, polymeric thickeners, additives having an oxidizing action, stabilizers and retardants,characterized in that it additionally comprises(e) 0.001 to 5 wt. % of at least one aromatic amine.
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Accused Products
Abstract
The invention relates to compositions which undergo cationic curing with visible light, comprising:
(a) 0.01 to 8 wt. % of at least one diaryliodonium compound,
(b) 0.01 to 8 wt. % of at least one α-dicarbonyl compound,
(c) 10.0 to 99.9 wt. % of at least one compound containing epoxide groups and/or oxetane groups,
(d) 0 to 85 wt. % of modifiers, such as fillers, dyestuffs, pigments, flow improvers, thixotropic agents, polymeric thickeners, additives having an oxidizing action, stabilizers and retardants, characterized in that they additionally comprise
(e) 0.001 to 5 wt. % of at least one aromatic amine.
The compositions have a low intrinsic color, cure with little smell and, after curing, give compositions with very good mechanical properties.
157 Citations
27 Claims
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1. Composition which undergoes cationic curing with visible light, comprising
(a) 0.01 to 8 wt. % of at least one diaryliodonium compound, (b) 0.01 to 8 wt. % of at least one α - -dicarbonyl compound,
(c) 10.0 to 99.9 wt. % of at least one compound containing epoxide groups and/or oxetane groups, (d) 0 to 85 wt. % of modifiers, such as fillers, dyestuffs, pigments, flow improvers, thixotropic agents, polymeric thickeners, additives having an oxidizing action, stabilizers and retardants, characterized in that it additionally comprises (e) 0.001 to 5 wt. % of at least one aromatic amine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
- -dicarbonyl compound,
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14. Composition which undergoes cationic curing with visible light, comprising
(a) 0.01 to 8 wt. % of at least one diaryliodonium compound having the following structure: -
space="preserve" listing-type="equation">[(R.sup.1).sub.a Ar.sup.1)--I--(Ar.sup.2 (R.sup.2).sub.b)].sup.+ Y.sup.-wherein the symbols denote; Ar1 , Ar2 independently of one another different, substituted or unsubstituted, fused or non-fused aromatic systems having 4 to 20 C atoms, preferably phenyl, tolyl, cumyl, anisyl, chlorophenyl, nitrophenyl, naphthyl, thienyl, furanyl and pyrazolyl, R1, R2 independently of one another an H atom, an aliphatic radical having 1 to 19, preferably 1 to 9 C atoms, it being possible for one or more C atoms to be replaced by O, C═
O, --O(C=0)--, F, Cl, Br, SiR33 and/or NR32, wherein R3 is an aliphatic radical having 1 to 7 C atoms, in which one or more C atoms can be replaced by O, C═
O and/or --O(C═
O)--, wherein the aromatics Ar1 and Ar2 can be bonded to one another via R1 and/or R2,a and b independently of one another an integer from 1 to 5 and Y- =B(C6 F5)4-, (b) 0.01 to 8 wt. % of at least one α
-dicarbonyl compound,(c) 10.0 to 99.9 wt. % of at least one compound containing epoxide groups and/or oxetane groups, (d) 0 to 85 wt. % of modifiers, such as fillers, dyestuffs, pigments, flow improvers, thixotropic agents, polymeric thickeners, additives having an oxidizing action, stabilizers and retardants, characterized in that it additionally comprises (e) 0.001 to 5 wt. % of at least one aromatic amine having the following structure;
##STR7## in which R6, R7 and R8 independently of one another denote an H atom, an aliphatic, aromatic or araliphatic radical having 1 to 19 C atoms, it being possible for one or more C atoms to be replaced by O, C═
O, --O(C═
O)--, SiR93 and/or NR92, and R9 is an aliphatic radical having 1 to 7 C atoms, in which one or more C atoms can be replaced by O, C═
O and/or O(C═
O), and z can assume numerical values from 1 to 5 and R6 and R7 and/or R6 and R8 together can form ring structures which can be unsubstituted or substituted by aliphatic cycloaliphatic, aromatic, heteroaromatic or fused aromatic radicals. - View Dependent Claims (15)
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Specification