Liquid photoinitiator mixtures
AssigneeCiba-Geigy Corporation
InventorsGodwin Berner, Franciszek Sitek, Rinaldo Husler
Life of this patent
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Abstract
Liquid highly active photoinitiators are obtained by dissolving a solid photoinitiator of the titanocene type in liquid photoinitiators of the acetal or ketal type. The liquid mixtures have a long dark storage stability.
Claims9
A compound of the formula I ##STR14## in which Ar.sup.1 and Ar.sup.2 are independently of each other phenyl or C.sub.1 -C.sub.4 -alkyl- or halogen-substituted phenyl and R.sup.1 and R.sup.2 have the same meaning and each is a C.sub.9 -C.sub.16 -alkyl radical.
A compound of the formula I ##STR15## in which Ar.sup.1 and Ar.sup.2 are independently of each other phenyl or C.sub.1 -C.sub.4 -alkyl- or halogen-substituted phenyl and R.sup.1 and R.sup.2 are independently of each other a C.sub.9 -C.sub.15 -alkyl radical.
A compound of the formula I ##STR16## in which Ar.sup.1 and Ar.sup.2 are independently of each other phenyl or C.sub.1-C.sub.4 -alkyl- or halogen-substituted phenyl and R.sup.1 and R.sup.2 are independently of each other a C.sub.9 -C.sub.11-alkyl radical.
A compound of the formula I ##STR17## in which Ar.sup.1 and Ar.sup.2 are independently of each other phenyl or C.sub.1 -C.sub.4 -alkyl- or halogen-substituted phenyl and R.sup.1 and R.sup.2 are independently of each other a C.sub.12 -C.sub.15 -alkyl radical.
A mixture of compounds having the formula ##STR18## wherein R.sup.1 and R.sup.2 are --C.sub.9 H.sub.17 to --C.sub.11 H.sub.23.
Dependencies are inferred from the claim text.