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US 5,705,641 AGranted
Process for the preparation of 1,3,5-triazine carbamates from amino-1,3,5-triazines and organic carbonates
AssigneeCytec Technology Corp.
InventorsLawrence A. Flood, Ram B. Gupta, Revathi Iyengar, David A. Ley, Vankatarao K. Pai
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Abstract
Provided is a process for preparing an at least bis-carbamate functional 1,3,5-triazine by contacting an at least diamino-1,3,5-triazine, an acyclic organic carbonate and a base, as well as certain novel compositions producible thereby. Also provided are substantially halogen contamination free crosslinker compositions comprising the products obtainable by the process, and curable compositions based upon these crosslinkers.
Claims31
A process for preparing a carbamate functional 1,3,5-triazine comprising the steps of:
- (1) contacting, at a temperature and for a length of time sufficient to produce a carbamate functional 1,3,5-triazine, a mixture comprising:
- (a) an amino-1,3,5-triazine represented by the formula:
- ##STR13## wherein Z is selected from the group consisting of hydrogen, hydrocarbyl and a group represented by the formula NHQ, and
- each Q is independently selected from the group consisting of hydrogen, a hydrocarbyl and a hydrocarbyloxy hydrocarbyl, with the proviso that at least two of the Q groups are hydrogen, and
- each hydrocarbyl is independently selected from the group consisting of an alkyl of 1 to 20 carbon atoms, alkenyl of 3 to 20 carbon atoms, aryl of 6 to 20 carbon atoms and aralkyl of 7 to 20 carbon atoms;
- (b) an acyclic organic carbonate;
- and
- (c) a base;
- and
- (2) neutralizing the product from (1) with an acid.
7 more elements
Dependencies are inferred from the claim text.