Molding of aminotriazine-formaldehyde resins to produce coffee-stain resistant moldings

Claim 1

THE PROCESS OF PRODUCING AMINOTRIZINE FORMALDEHYDE MOLDING RESISTANT TO COFFEE-STANDING WHICH COMPRISES REACTING FORMALDEHYDE WITH AN ALIPHATIC GUANAMINE SELECTED FROM THE GROUP OF DIGUANAMINES AND TRIGUANAMINES IN THE MOLAR PROPORTIONS OF FROM 1.5 TO 3 MOLES OF FORMALDEHYDE PER TRIAZINE NUCLEUS IN THE ALIPHATIC GUANAMINE TO PRODUCE A RESIN SYRUP IN THE UNCURED STATE, DRYING THE RESIN SYRUP THUS PRODUCED TO PRODUCE DRY UNCURED RESIN; MIXING THE DRY UNCURED RESIN WITH AN ACID ACCELERATOR WHICH WILL NOT EFFECT CURING OF THE RESIN UNDER THE CONDITIONS OF THE MIXING TO PRODECE A SUBSTANTIALLY HOMOGENEOUS MIXTURE HAVING A CONCENTRATION OF FROM 0.5% TO 5% BY WEIGHT OF THE ACCELERATOR; MOLDING THIS MIXTURE FOR FROM 30 SECONDS TO 5 MINUTES AT A TEMPERATURE OF FROM 300*F. TO 400*F. WITH THE MOLDING TIME CORRELATED WITH THE CONCENTRATION OF THE ACCELERATOR SO THAT WITH CONCENTRATIONS NEAR THE LOWER PORTION OF THE ACCELERATOR CONCENTRATION RANGE OF FROM 0.5% TO 5% LONGER CURING TIMES WITHIN THE 30 SECONDS TO 5 MINUTES RANGE ARE USED AND WITH ACCELERATOR CONCENTRATIONS NEARER THE UPPER PORTION OF SAID RANGE OF FROM 0.5% TO 5% SHORTER CURING TIMES NEARER THE LOWER PORTION OF THE 30 SECONDS TO 5 MINUTES RANGE ARE USED.