Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1982-09-20
1984-07-03
Torrence, Dolph H.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260453A, C07C11800, C07C119045
Patent
active
044578717
ABSTRACT:
A process is disclosed for selectively making trans-cyclohexane-1,4-diisocyanate, trans-cyclohexane-1,4-diamine, a trans-cyclohexane-1,4-diurethane, a trans-cyclohexane-1,4-diurea and trans-cyclohexane-1,4-disulphonyl urea by reacting ammonia with a mixture of cis and trans cyclohexane-1,4-dicarboxylic acid, a lower alkyl ester, a glycol ester, an oligomeric ester or a polyester to make a solid trans-dicarboxylic acid diamide in a first step. The diamide is chlorinated to form trans-cyclohexane-1,4-dicarboxylic acid-bis-N-chloramide. The latter compound is then converted into a
REFERENCES:
patent: 2728787 (1955-12-01), Hurwitz et al.
patent: 2773086 (1956-12-01), Slocombe et al.
patent: 3644459 (1972-02-01), Cross
Bergfeld Manfred
Zengel Hans
Akzona Incorporated
Green Robert F.
Torrence Dolph H.
Young Francis W.
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