Acylphosphine oxides and their use
AssigneeBASF SE
InventorsAndreas Henne, Anton Hesse, Manfred Jacobi, Gunnar Schornick, Rudolf Vyvial, Klaus Holoch
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Abstract
Acylphosphine oxides of the general formula ##STR1## where R.sup.1 is methyl or ethyl, R.sup.2 is a branched or straight-chain alkyl radical or chlorine, alkoxy or hydrogen, R.sup.3 and R.sup.4 are identical or different, and are each alkyl, alkoxy, alkylthio or chlorine and R.sup.5 is hydrogen, chlorine, alkoxy, alkylthio or alkyl, may be used as photoinitiators in photopolymerizable materials.
Claims6
An acylphosphine oxide which may be used as a photoinitiator and is of the formula (I) ##STR13## where R.sup.1 is methyl, R.sup.2 is a branched or straight-chain alkyl radical of 1 to 4 carbon atoms, chlorine, alkoxy of 1 to 4 carbon atoms or hydrogen, R.sup.3 and R.sup.4 are identical or different, and are each alkyl, alkoxy or alkylthio, each of 1 to 4 carbon atoms, or chlorine, and R.sup.5 is hydrogen, chlorine, or alkoxy or alkylthio, each of 1 to 6 carbon atoms, or a branched or straight-chain alkyl radical of 1 to 12 carbon atoms.
Dependencies are inferred from the claim text.