Patent ID: 6051708
Filing Date: 2000-04-18
Classification: C08K

Abstract:
A process for preparing a melamine condensation product comprising the steps of:selecting a starting material consisting essentially of at least one material selected from a group consisting of melamine and melamine salts, said melamine salts being prepared from phosphoric acid, nitric acid, sulfuric acid, formic acid, or fatty acids;combining said starting material with an organic acid to form a reaction mixture, said organic acid being selected from the group consisting of carboxylic, sulfonic, and phosphoric acids, said starting material and said organic acid having a molar ratio of between about 20:1 and about 1:5;heating said reaction mixture to a temperature of at least 250.degree. C. thereby condensing said starting material and releasing ammonia;continuing said heating step until substantially all of said starting material has been converted into said melamine condensation product.