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US 4,395,569 AGranted
Method of preparing sulfonic acid salts of acyloxyalkylamines and polymers and compounds therefrom
AssigneeRohm and Haas Company
InventorsSheldon N. Lewis, Jerome F. Levy
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Abstract
A sulfonic acid salt of an acyloxyalkylamine is prepared by reaction of an organic acid or amino-acid with a sulfonic acid salt of an alkanolamine. Isocyanates are prepared therefrom by reaction with phosgene.
Claims2
Process for the production of an ester of an organic acid which comprises reacting:
- (a) at least one alkanolamine sulfonic acid salt said alkanolamine having from two to eight carbon atoms, one primary amino group and either a primary or secondary hydroxyl group, with
- (b) at least one organic acid or salt thereof selected from the group consisting of:
- (1) aliphatic and aromatic dicarboxylic acids and
- (2) acrylic, methacrylic, fumaric, maleic and
- (3) a sulfonic acid salt of an amino acid selected from the group consisting of monoamino-monocarboxylic, monoamino-dicarboxylic, diamino-monocarboxylic, and diamino-dicarboxylic acids,
- at a temperature of at least 40.degree. C. while removing water as the reaction proceeds.
3 more elements
Dependencies are inferred from the claim text.