Acylphosphine oxide compounds of the general formula ##STR1## where R.sup.1 is alkyl, cyclohexyl, cyclopentyl, aryl which is unsubstituted or substituted by halogen, alkyl or alkoxy, or an S-containing or N-containing five-membered or six-membered heterocyclic radical, R.sup.2 has one of the meanings of R.sup.1 (but R.sup.1 and R.sup.2 may be identical or different) or is alkoxy, aryloxy or aralkoxy, or R.sup.1 and R.sup.2 together form a ring and R.sup.3 is an at least disubstituted phenyl, pyridyl, furyl or thienyl radical which carries, at least at the two carbon atoms adjacent to the linkage point of the carbonyl group, the substituents A and B, which may be identical or different, and each of which is alkyl, alkoxy or alkythio of 1 to 6 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, phenyl or halogen, or R.sup.3 is .alpha.-naphthyl substituted by A and B at least in the 2- and 8-positions or is .beta.-naphthyl substituted by A and B at least in the 1- and 3-positions, a process for the preparation of these acylphosphine oxide compounds from acid halides of the general formula ##STR2## where X is chlorine or bromine, and a phosphine of the general formula ##STR3## and the use of these acylphosphine oxide compounds as photoinitiators in photopolymerizable surface coatings, finishes and printing inks.
一般式为##STR1##的酰基膦氧化物化合物,其中R.sup.1是烷基,环己基,环戊基,未取代或取代为卤素,烷基或烷氧基的芳基,或者是含有S或N的五元或六元杂环基团,R.sup.2具有R.sup.1的一种含义(但R.sup.1和R.sup.2可以相同或不同),或者是烷氧基,芳氧基或芳基烷氧基,或者R.sup.1和R.sup.2一起形成环,R.sup.3是至少二取代的苯基,
吡啶基,
呋喃基或
噻吩基基团,其携带在羰基团连接点相邻的至少两个碳原子上的取代基A和B,这些取代基A和B可以相同或不同,且每个取代基都是1至6个碳原子的烷基,烷氧基或烷
硫基,5至7个碳原子的环烷基,苯基或卤素,或者R.sup.3是α-
萘基,在2-和8-位置上至少被A和B取代,或者是β-
萘基,在1-和3-位置上至少被A和B取代,一种从一般式##STR2##的酸卤化物(其中X是
氯或
溴)和一般式##STR3##的膦化合物制备这些酰基膦氧化物化合物的方法,以及将这些酰基膦氧化物化合物用作光
引发剂,用于光聚合表面涂层,饰面和印刷油墨。