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

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

1990-10-16

1992-03-17

McCamish, Marion E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 16, 522 63, 522 64, 522 81, 430281, 430282, 430285, 430286, 430288, C07F 932, C09D 3727, C08F 250, G03F 7004

Patent

active

050969358

ABSTRACT:
The invention relates 6-acyl-(6H)-dibenz[c,e][1,2]oxaphosphorine-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 carbom 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: 4292152 (1981-09-01), Lechtken et al.
patent: 4447520 (1984-05-01), Henne et al.

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