Coprecipitated resins, products containing same, and processes of making both of same

Claim 1

A PROCESS WHICH COMPRISES MIXING A COLLOIDAL AQUEOUS SOLUTION OF A CATIONIC MELAMINE-FORMALDEHYDE RESIN WITH AN AQUEOUS DISPERSION OF A SYNTHETIC, WATER-INSOLUBLE THERMOPLASTIC RESIN, SAID DISPERSION BEING FORMED BY MEANS OF AN ANIONIC DISPERSING AGENT, WHEREBY SAID DISPERSION IS FLOCCULATED AND THE MELAMINE-ALDEHYDE RESIN COPRECIPITATED WITH SAID THERMOPLASTIC RESIN, SAID MELAMINE-FORMALDEHYDE RESIN BEING ONE HAVING A GLASS ELECTRODE PH VALUE WITHIN THE RANGE OF ABOUT 0.5 TO ABOUT 3.5 WHEN MEASURED AT 15% SOLIDS, SAID RESIN CONTAINING ABOUT 2-2.5 MOLS OF COMBINED FORMALDEHYDE FOR EACH MOL OF MELAMINE AND HAVING A DEGREE OF POLYMERIZATION LESS THAN THAT WHICH CHARACTERIZES GELS AND PRECIPITATES WHICH ARE UNDISPERSIBLE BY AGITATION WITH WATER BUT SUFFICIENT TO BRING THE PARTICLES THEREOF WITHIN THE COLLOIDAL RANGE, SAID RESIN HAVING A DEFINITE POSITIVE ELECTRICAL CHARGE AS SHOWN BY ITS MIGRATION TOWARD THE CATHODE UPON ELECTROPHORESIS OF THE SOLUTION.