Process for manufacturing fiber re-

Claim 1

IN A PROCESS FOR PREPARING A REINFORCED RESIN ARTICLE THE STEPS WHICH COMPRISE ADMIXING A MONORMER-POLYMER SYRUP WHICH IS A MIXTURE OF MONOMERIC AND POLYMERIZED METHYL METHACRYLATE WITH FROM 0.1 TO 20%, BASED ON THE WEIGHT OF SAID MONOMERIC METHYL METHACRYLATE, OF ETHYLENE DIMETHACRYLATE AS A CROSS-LINKING AGENT, AND WITH FROM 10 TO 60%, BASED ON THE TOTAL WEIGHT OF REINFORCED RESIN, OF FIBROUS GLASS REINFORCEMENT, SAID SYRUP CONTAINING FROM 10 TO 50% BY WEIGHT OF THE POLYMERIC COMPONENT, SUBJECTING THE RESULTING MIXTURE, IN THE PRESENCE OF A CATALYST SUITABLE FOR CONVERTING METHYL METHACRYLATE TO SOLID POLYMER, TO A TEMPERATURE IN THE RANGE OF 75* TO 150*C. UNDER A COMPACTING PRESSURE WITHIN THE RANGE OF 10 TO 200 POUNDS PER SQUARE INCH, FOR A PERIOD OF TIME LESS THAN 20 MINUTES UNTIL POLYMERIZATION AND CROSS-LINKING HAVE PROCEEDED FAR ENOUGH TO PERMIT WITHDRAWAL OF THE REINFORCED RESIN IN SELF-SUSTAINING FORM FROM THE INFLUENCE OF SAID COMPACTING PRESSURE, SAID POLYMERIZATION BEING, HOWEVER, INCOMPLETE, AND THEREUPON WITHDRAWING THE SAID REINFORCED RESIN FROM THE INFLUENCE OF THE SAID PRESSURE.