Patent ID: 6361925
Filing Date: 2002-03-26
Classification: B33Y,C07F,C08F,C09D,G03F,Y10S

Abstract:
A photoinitiator mixture consisting essentially ofa compound of the formula (Ia) in whichR1 is C1-C4alkyl; R2 is hydrogen, C1-C4alkyl or C1-C4alkoxy, and R3, R4, R5, R6 and R7 independently of one another are hydrogen, halogen, or C1-C20alkyl; and a compound selected from the group consisting of a compound of the formula (II), (III) and (IV) R8 is hydrogen, C1-C18alkyl, C1-C18alkoxy, â€”OCH2CH2â€”OR12; R9 and R10 independently of one another are hydrogen, C1-C6alkyl, phenyl, C1-C16-alkoxy, or R9 and R10, together with the carbon atom to which they are attached, form a cyclohexyl ring; R11 is hydroxyl, C1-C16alkoxy or â€”O(CH2CH2O)qâ€”C1-C16alkyl; where R9, R10 and R11 are not all simultaneously C1-C16alkoxy or â€”O(CH2CH2O)qâ€”C1-C16alkyl, R12 is hydrogen, C1-C8alkyl, R15, R15a, R16 and R17 independently of one another are hydrogen, methyl, phenyl, methoxy, â€”COOH, unsubstituted or C1-C4alkyl-substituted phenyl, or a group â€”OCH2CH2OR12 or â€”SCH2CH2OR12; R18 is hydrogen, C1-C4alkyl, C1-C4alkoxy, C1-C4alkylthio, or a group N(R22)(R23); R19 is as defined for R18; R20 is C1-C8alkyl; R21 is hydrogen, or phenyl which is unsubstituted or is substituted one to three times by C1-C12alkyl; and R22 and R23 independently of one another are C1-C4alkyl, or R22 and R23, together with the nitrogen atom to which they are attached, form a five- or six-membered saturated or unsaturated ring which can be interrupted by â€”Oâ€”, â€”NHâ€” or â€”N(CH3)â€”.