摘要 |
<p>Amino resins, e.g., urea-formaldehyde and melamine-formaldehyde thermosetting resins, are cured with a latent catalyst which is a thermally-decomposable adduct of an aromatic sulfonic acid (e.g., p-toluene sulfonic acid) and a bicyclic oxazolidines (e.g., 1-aza-3,7-dioxa-5-ethylbicyclo (3.3.0) octane. The coating compositions can contain other conventional co-reactants, such as polyols, polyacids, alkyd resins, polyester resins, epoxies, acrylics and the like. Coatings containing the amino resin, co-reactant, and latent catalyst have an acceptable viscosity stability, cure rapidly at temperatures lower than some other latent catalysts, and produce films with no wrinkles.</p> |
申请人 |
KING INDUSTRIES INC., NORWALK, CONN., US |
发明人 |
CALBO, LEONARD J., BETHEL, CT 06801, US;COUGHLIN, ROBERT D., FAIRFIELD, CT 06430, US |