Reduction and inhibition of ETU content in alkylenebisdithiocarb

Details Reduction and inhibition of ETU content in alkylenebisdithiocarb Reduction and inhibition of ETU content in alkylenebisdithiocarb

1990-04-24

1991-12-17

Lee, Mary C.

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

Organic compounds

Thiocarboxylic acids or salts thereof

556 39, 558235, C07C 6100, C07C33300, A61K 3121

Patent

active

050736477

ABSTRACT:
A method is provided for stabilizing alkylenebisdithiocarbamates (EBDC) by mixing the EBDC with chloralhydrate to reduce the content of alkylenethiourea (ETU) in the EBDC. The chloralhydrate is preferably added in an amount of about 0.1 to 5 weight percent based upon the EBDC. The preferably liquid (e.g., aqueous or alcoholic) reaction mixture is then preferably dried under vacuum. The stabilized EBDC product contains chloralhydrate, mono- and/or bis-trichloroethylol-alkylenethioureas, and less than about 0.015 weight percent ETU.

REFERENCES:
patent: 2579384 (1951-12-01), Handy et al.
patent: 3210394 (1965-10-01), Nemec et al.
patent: 3379610 (1968-04-01), Lyon et al.
patent: 3869486 (1975-03-01), Van den Boogaart et al.
patent: 4217293 (1980-08-01), Adams, Jr.
patent: 4344890 (1982-08-01), Adams, Jr.

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