Method for making diaryliodonium salts

Details Method for making diaryliodonium salts Method for making diaryliodonium salts

1978-10-30

1980-12-09

Lee, Mary

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260429R, 260446, 260447, 546 1, 546 3, 546 9, 568931, 260440, 570182, C07F 968, C07F 902, C07F 922

Patent

active

042383943

ABSTRACT:
A method is provided for making certain diaryliodonium salt photoinitiators, based on the initial formation of a diaryliodonium bisulfate. Methylene chloride is substituted for acetic acid during the reaction between potassium iodate and benzene in the presence of acetic anhydride and sulfuric acid. The diaryliodonium bisulfate is then reacted with a counterion source, such as a metal salt, to produce the desired diaryliodonium salt which can be used as a photoinitiator. The iodonium salt photoinitiators made by the method of the present invention can be used to make UV curable compositions.

REFERENCES:
patent: 3729313 (1973-04-01), Smith
patent: 3808006 (1974-04-01), Smith
patent: 4151175 (1979-04-01), Crivello et al.
Beringer et al., J.A.C.S., vol. 81, pp. 342-351, (1959).
Berry et al., Twelvth Intl. Cong. Pure and App. Chem., N.Y., N.Y. (9/51) p.465.
Masson et al.; J. Chem. Soc. (London), (1937), pp. 1718-1723.
Masson; Nature, vol. 139, pp. 150-151, (1937).
Caserio et al., J.A.C.S., vol. 81, (1959) pp. 336-342.
Masson et al., J. Chem. Soc. (1938), pp. 1099-1701.

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