Novel 6-acyl-(6H)-dibenz[c,e][1,2]oxaphosphorin 6-oxides, their

Details Novel 6-acyl-(6H)-dibenz[c,e][1,2]oxaphosphorin 6-oxides, their Novel 6-acyl-(6H)-dibenz[c,e][1,2]oxaphosphorin 6-oxides, their

1988-08-22

1991-04-16

Berch, Mark L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

252600, 558124, 430281, 430282, 430285, 430286, 430288, C07F 932, C09D 3727, C08F 250, G03F 710

Patent

active

050084267

ABSTRACT:
The invention relates 6-acyl-(6H)-dibenz[c,e][1,2]oxaphosphorin-6-oxides of the formula ##STR1## wherein each of R.sup.1, R.sup.2 and R.sup.3 may be present one or more times and R.sup.1, R.sup.2 and R.sup.3 represent halogen having an atomic number of from 9 to 35, alkyl or alkoxy each having from 1 to 6 carbon atoms and wherein Ar represents an aromatic hydrocarbon group having from 6 to 10 carbon atoms.
The invention further relates to a process for the preparation of the afore-mentioned compounds and polymerizable compositions containing them as an essential ingredient as a photo-initiator. Finally the invention relates to 6-alkoxy-(6H)-dibenz[c,e][1,2]oxaphosphorin of the formula II ##STR2## wherein each of R.sup.1 and R.sup.2 may be present once or more times and R.sup.1 and R.sup.2 represent halogen having an atomic number of from 9 to 35, alkyl or alkoxy each having from 1 to 6 carbon atoms, at least one R.sup.1 being, however, halogen and wherein R.sup.4 represents alkyl having from 1 to 6 carbon atoms.

REFERENCES:
patent: 3562361 (1971-02-01), Gier
patent: 3826640 (1974-07-01), Theissen
patent: 4292152 (1981-09-01), Lechtken et al.
patent: 4324744 (1982-04-01), Lechtken et al.
patent: 4483279 (1969-12-01), Davis et al.
patent: 4710523 (1987-12-01), Lechtken et al.

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