Alpha-hydroxyketones

摘要

Compounds of the Formula (I) wherein x is an integer from 1-4; p is an integer from 1-3; q is an integer from 0-3; Ar is phenyl, naphthyl, anthryl or phenanthryl each of which optionally is substituted by one or more Cl, CN, OR5, C3-C5alkenyl or C1-C6alkyl which optionally is substituted by one or more OR6, COOR or halogen; R1 if x is 1, is OR7, O—X+, NR8R9, C1-C20alkyl optionally substituted by one or more COOR10, or is C2-C20alkyl interrupted by one ore more O, or is C2-C5alkenyl or phenyl-C1-C4alkyl; R1 if x is 2, is for example C1-C20alkylene; R1 if x is 3, is for example a tri-valent radical; R1 if x is 4, is for example a tetravalent radical; R2 and R3 are hydrogen or C1-C8alkyl, or R2 and R3 together are O, C1-C3alkylene or CH═CH; R4 is C1-C4alkyl; R5, R6, R7, R8, R9 and R10 are for example hydrogen or C1-C4alkyl; and X is a x-valent cationic counter ion; are in particular suitable as photoinitiators for the curing with UV-A light (320-450 nm).;

主权项

1. Compounds of the formula I′ wherein x is an integer from 1-4; Ar is phenyl, naphthyl, anthryl or phenanthryl each of which optionally is substituted by one or more CN, OR5, C3-C5alkenyl or C1-C6alkyl which optionally is substituted by one or more OR6, COOR6 or halogen; R1 when x is 1, is OR7, O−X+, NR8R9, C1-C20alkyl optionally substituted by one or more COOR10, or is C2-C5alkenyl or phenyl-C1-C4alkyl; R1 when x is 2, is C1-C20alkylene, C2-C20alkylene which optionally is interrupted by one or more O, or is O-A-O, O-A-NR15, NR15-A-O, NR′15-A-NR15, NR15a-A1-NR15b or NR′15—(CH2)x′-A-(CH2)x′—NR15 or is O−X2+O−; x′ is an integer from 1-4; R1 when x is 3, is N(R30O)3—; C3-C20alkanetriyltrioxy which optionally is substituted by OH; C3-C20alkanetriyltriamino; a trivalent siloxane, or O3−X3+; R1 when x is 4, is C4-C20alkanetetrayltetraoxy optionally substituted by OH; C4-C20alkanetetrayltetraamino; a tetravalent siloxane; or O4−X4+; R5 is hydrogen, C1-C4alkyl, phenyl which optionally is substituted by one or more C1-C4alkyl, C1-C4alkoxy or halogen; or is (C2-C6alkyleneO)n—R6; n is an integer from 1-20; R6 is hydrogen, C1-C4alkyl, C2-C5alkenyl or C2-C6alkanoyl; R7 is hydrogen, C2-C5alkenyl, C2-C20alkyl which is substituted by one or more OH, NR11R12 or Si(R14)y(OR13)z; or is C2-C20alkyl which is interrupted by one or more O or NR15 and optionally is substituted by one or more OH, NR11R12 or Si(R14)y(OR13)z; or is C1-C20haloalkyl which optionally is substituted by one or more OH, NR11R12 or Si(R14)y(OR13)z; or is C2-C20haloalkyl which is interrupted by one or more O or NR15; R8 and R9 independently of one another are hydrogen, C1-C20alkyl; C1-C8alkyl substituted by CN, COOR11 or Si(R14)y(OR13)z; C2-C8alkyl substituted by one or more NR11R12 or OR11; or are C3-C8cycloalkyl, C3-C5alkenyl, phenyl-C1-C4alkyl or phenyl which optionally is substituted by C1-C4alkyl, OR11 or halogen; or R8 and R9 together are C3-C7alkylene which optionally is interrupted by one or more O or NR15 and which C3-C7alkylene or interrupted C3-C7alkylene optionally is substituted by one or more C1-C4alkyl or COOR11; z is an integer from 0-3; y is an integer from 0-3, wherein the sum of y+z is 3; R10 is hydrogen or C1-C4alkyl; R11 and R12 independently of one another are hydrogen or C1-C4alkyl which optionally is substituted by OH; R13 is hydrogen, C1-C4alkyl or Si(R14)(R′14)(R″14); R14, R′14 and R″14 independently of each other are hydrogen or C1-C4alkyl; R15 and R′15 independently of one another are hydrogen; C1-C20alkyl which optionally is substituted by OH, COOR11 or CN; or is C2-C20alkyl which optionally is interrupted by one or more O; or is C3-C5alkenyl, phenyl-C1-C4alkyl, C1-C5alkanoyl or benzoyl; R15a and R15b independently of one another form an aliphatic ring with a carbon atom of A1 or R15a and R15b together are C1-C3alkylene; R30 is C2-C8-alkylene optionally interrupted by one or more O; A is C2-C20alkylene which optionally is interrupted by one or more O or NR15; C2-C20haloalkylene which optionally is interrupted by one or more O or NR15; C5-C20cycloalkylene; or A is a divalent siloxane A1 is C2-C20alkylene which optionally is interrupted by one or more O or NR15; and X is a x-valent cationic counter ion.