Aliphatic acyl-containing amine hydrochlorides
AssigneeRohm and Haas Company
InventorsWilliam D. Emmons, Jerome F. Levy
Life of this patent
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Abstract
Novel acyl-containing amine hydrochlorides are produced by first converting the amino group or groups of an amino acid to an acid salt by reaction with hydrochloric acid and the resulting product is reacted with an alkanolamine or diol in an inert liquid medium while passing a stream of hydrogen chloride gas therethrough. The amine hydrochlorides produced in this manner may be converted to the corresponding isocyanates by reaction with phosgene or other carbonyl dihalide.
Claims8
An amine having the formula ##EQU3## wherein m and n are either 1 or 2, R.sub.6 is an alkylene or cycloalkylene radical having 2 to 8 carbon atoms and up to one hetero oxygen or sulfur atom in the alkylene chain, and
- R.sub.7 is a divalent organic alkylene or cycloalkylene radical having 3 to 18 carbon atoms.
An amine salt having the formula ##EQU4## wherein m and n are either 1 or 2, R.sub.6 is an alkylene or cycloalkylene radical having 2 to 8 carbon atoms and up to 1 hetero oxygen or sulfur atom in the alkylene chain,
- R.sub.7 is a divalent organic alkylene or cycloalkylene radical having 3 to 18 carbon atoms, and
- Hx is a strong mineral acid.
Dependencies are inferred from the claim text.