Aromatic amines formed by the reaction of isatoic acid anhydride with compounds containing at least one tertiary nitrogen atom and at least two hydroxyl groups
AssigneeBayer Aktiengesellschaft
InventorsJohannes Blahak, Erwin Muller, Karl Hartwig Richert
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Abstract
Aromatic di- and triamines are disclosed which amines are prepared by reacting isatoic acid anhydride with a compound containing at least two hydroxyl groups and at least one tertiary nitrogen group and having a molecular weight of from about 119 to about 1000. These amines are especially suited for preparing polyurethane resins by reaction with polyisocyanates.
Claims10
Diamines of the formula:
- ##EQU6## wherein R is a saturated or unsaturated C.sub.1 to C.sub.18 alkyl radical;
- C.sub.3 to C.sub.10 cycloalkyl radical;
- C.sub.7 to C.sub.11 aralkyl radical or C.sub.6 to C.sub.10 aryl radical;
- and R' and R" are the same or different and represent C.sub.2 to C.sub.30 alkylene radicals which may be interrupted by oxygen atoms.
Triamines of the formula:
- ##EQU9## wherein R', R" and R'" are the same or different and represent C.sub.2 to C.sub.30 alkylene radicals which may be interrupted by oxygen atoms.
Process for the preparation of diamines of the formula ##EQU12## and triamines of the formula ##EQU13## wherein R is a saturated or unsaturated C.sub.1 -C.sub.18 alkyl radical, a C.sub.3 -C.sub.10 cycloalkyl radical, a C.sub.7 -C.sub.11 aralkyl radical or a C.sub.6 -C.sub.10 aryl radical;
- and
- R', r" and R'" which may be the same or different, represent a C.sub.2 -C.sub.30 alkylene radical, if desired, interrupted by oxygen atoms,
- said process comprising reacting compound which contain at least one tertiary nitrogen atom and at least two hydroxyl groups and which have a molecular weight from about 119 to about 1000, with from 0.5 to 1 equivalents of isatoic acid anhydride per equivalent hydroxyl group, at a temperature from about 0.degree.C to about 120.degree.C, in the absence of catalysts.
Dependencies are inferred from the claim text.