Abstract:
The invention pertains to novel oligofunctional photoinitiators of the formula (1) or (1A). R 1 and R 2 are methyl or together are -(CH 2 ) 5 -; and n is 2 or 3, and the solvent in (1A) is water or an organic solvent; and their use in photopolymerizable compositions, in particular inks.
Abstract:
The present application provides a uv dose indicator film and ink showing a color change depending on the absorbed radiation-dose, comprising (a) a selected acid responsive colorant; (b) a sulfonyloxime ester compound or a -N-O-sulfonyl compound as photolatent acid and (c ) a UV-absorber.
Abstract:
The invention pertains to high-molecular photoinitiator compounds comprising a photoactive moiety Q and an amine functionality, preferably a tertiary amino group, where the photoactive moiety Q is a benzoyl photoactive moiety.
Abstract:
The present application provides a uv dose indicator film and ink showing a color change depending on the absorbed radiation-dose, comprising (a) a selected acid responsive colorant; (b) a sulfonyloxime ester compound or a -N-O-sulfonyl compound as photolatent acid.
Abstract:
Photoinitiator compounds comprising both a photoactive moiety and an amine functionality, bonded to a polyhedral oligomeric silsesquioxane, which photoinitiator is represented by formula (1) or (1') wherein n is 2m; m is an integer of 2 to 30; the sum of n' + a is an integer 4-60; n' is an even-numbered integer; a is an even-or uneven-numbered integer; and for example different A C 1 -C 12 alkyl, or a photoactive moiety Q1, or a group of formula (2); E for example is a direct bond, L is linear or branched C 1 -C 3 alkylene, preferably propylene; R 1 and R 2 for example are a photoactive moiety Q, or C 2 - 20 alkyl; Q is for example a group of formula (4); Z 2 is for example C 1 -C 6 alkylene which is unsubstituted or substituted by one or more OR 6 ; and R 6 , R 12 , R 13 and R 14 for example are hydrogen; are especially suitable as low-migrating photoinitiators.
Abstract:
Photoinitiators mixture comprising (i) at least one compound selected from the group consisting of alpha-hydroxy ketones, monoacylphosphine oxides, bisacylphosphine oxides, ketosulfones, benzil ketals, benzoin ether, phenylglyoxylates, borates and titanocenes; and (ii) at least one compound of the formula (I) or (I') R 1 , R' 1 ,R 2 and R 2 ' R' 9 independently of each other for example are hydrogen or C 1 -C 12 alkyl R 7 , R 8 , R 9 , R' 8 and R' 9 independently of each other for example are hydrogen, C 1 -C 12 alkyl which optionally is substituted or phenyl which optionally is substituted, exhibit excellent photoinitiating properties.
Abstract:
Photoinitiator mixture comprising at least one alpha-amino ketone compound; and at least one compound of the Formula (I) or (I' ) wherein R 1 and R' 1 for example are hydrogen, C 3 -C 8 cycloalkyl or C 1 -C 12 alkyl R 2 and R 2 ' for example are hydrogen; unsubstituted C 1 -C 20 alkyl or substituted C 1 -C 20 alkyI; and R 8 and R 9 for example are are hydrogen, C 1 -C 12 alkyl which optionally is substituted, or phenyl which optionally is substituted; exhibit an unexpectedly good performance in photopolymeri- zation reactions.
Abstract:
Photoinitiator mixture comprising at least one alpha-amino ketone compound; and at least one compound of the Formula (I) or (I' ) wherein R 1 and R' 1 for example are hydrogen, C 3 -C 8 cycloalkyl or C 1 -C 12 alkyl R 2 and R 2 ' for example are hydrogen; unsubstituted C 1 -C 20 alkyl or substituted C 1 -C 20 alkyI; and R 8 and R 9 for example are are hydrogen, C 1 -C 12 alkyl which optionally is substituted, or phenyl which optionally is substituted; exhibit an unexpectedly good performance in photopolymeri- zation reactions.
Abstract:
Compounds of the Formula (I), (II) and (III) wherein Ar is for example phenylene, biphenylene or naphthylene, all of which are unsubstituted or substituted by C1-C4-alkyl, C2-C4-alkenyl, CN, OR11, SR11, CH2OR11, COOR12, CONR12R13 or halogen; R1, R2, R7 and R8 independently of one another other are hydrogen or C1-C6-alkyl; R3 and R5 together and R4 and R6 together form a C2-C6-alkylene bridge which is unsubstituted or substituted by one or more C1-C4-alkyl; R11 is hydrogen or C1-C6-alkyl; R12 and R13 independently of one another for example are hydrogen, phenyl, C1-C18-alkyl, C1-C18-alkyl which is interrupted by one or more O; n is 1-10; X is O, S or NR10; A and A1 are suitable linking groups; are suitable as photolatent bases.