Abstract 1. A PROCESS FOR CASTING EYEGLASS FRAMES OR PARTS THEREOF COMPRISING (A) FORMING A LIQUID MIXTURE OF SUBSTANTIALLY 100% REACTIVE QUANTITIES OF A DEHYDRIC PHENOL EPOXY COMPOSITION AND A HARDENER, (I) SAID LIQUID MIXTURE CHARACTERIZED BY A VISCOITY OF LESS THAN 20,000 CENTIPOSIES AT 25*C.; (II) SAID LIQUID MIXTURE BEING CAPABLE OF BEING POLYMERIZED OR CURED AT A TEMPERATURE OF APPROXIMATELY 200*F.; (B) HEATING SAID LIQUID MIXTURE TO DECREASE ITS VISCOSITY AND ENHANCE EASE OF DEGASSING (I) MAINTAINING THE LIQUID MIXTURE IN A POURABLE LIQUID-CASTING CONDITION DURING SAID HEATING; (C) CASTING SAID PREHEATED MIXTURE INTO A MOLD HAVING EYEGALSS FRAME OR PARTS CAVITIES OF A DESIRED CONFIGURATION AT A RATE TO PREVENT FORMATION OF GAS BUBBLES IN SAID LIQUID MIXTURE; (D) HEATING SAID MOLD AND SAID CONTAINED LIQUID TO A TEMPERATURE OF AT LEAST 170*F. SUFFICIENT TO POLYMERIZE OR CURE SAID LIQUID MIXTURE; (E) REMOVING POLYMERIZED OF CURED EYEGLASS FRAMES OR PARTS FROM SAID MOLD AT AN ELEVATED TEMPERATURE THEREBY CAUSING DISTORTION OF SAID FRAMES OR PARTS, DEGATING AND REMOVING FLASH FROM SAID FRAMES AND PARTS; AND (F) SUBJECTING THE EYEGLASS FRAMES OR PARTS TO A LIQUID COOLING BATH TO RESTORE CAST CONFIGURATION (I) SAID EYEGLASS FRAMES OR PARTS THEREOF CHARACTERIZED BY THE PROPERTY, UPON DEFORMATION AFTER COMPLETION OF CURING OR POLYMERIZATION, OF RETURNING TO ITS ORIGINAL CAST CONFIGURATION WHEN HEATED TO A TEMPERATURE IN THE RANGE 100 TO 150*F.
A PROCESS FOR CASTING EYEGLASS FRAMES OR PARTS THEREOF COMPRISING (A) FORMING A LIQUID MIXTURE OF SUBSTANTIALLY 100% REACTIVE QUANTITIES OF A DEHYDRIC PHENOL EPOXY COMPOSITION AND A HARDENER, (I) SAID LIQUID MIXTURE CHARACTERIZED BY A VISCOITY OF LESS THAN 20,000 CENTIPOSIES AT 25*C.; (II) SAID LIQUID MIXTURE BEING CAPABLE OF BEING POLYMERIZED OR CURED AT A TEMPERATURE OF APPROXIMATELY 200*F.; (B) HEATING SAID LIQUID MIXTURE TO DECREASE ITS VISCOSITY AND ENHANCE EASE OF DEGASSING (I) MAINTAINING THE LIQUID MIXTURE IN A POURABLE LIQUID-CASTING CONDITION DURING SAID HEATING; (C) CASTING SAID PREHEATED MIXTURE INTO A MOLD HAVING EYEGALSS FRAME OR PARTS CAVITIES OF A DESIRED CONFIGURATION AT A RATE TO PREVENT FORMATION OF GAS BUBBLES IN SAID LIQUID MIXTURE; (D) HEATING SAID MOLD AND SAID CONTAINED LIQUID TO A TEMPERATURE OF AT LEAST 170*F. SUFFICIENT TO POLYMERIZE OR CURE SAID LIQUID MIXTURE; (E) REMOVING POLYMERIZED OF CURED EYEGLASS FRAMES OR PARTS FROM SAID MOLD AT AN ELEVATED TEMPERATURE THEREBY CAUSING DISTORTION OF SAID FRAMES OR PARTS, DEGATING AND REMOVING FLASH FROM SAID FRAMES AND PARTS; AND (F) SUBJECTING THE EYEGLASS FRAMES OR PARTS TO A LIQUID COOLING BATH TO RESTORE CAST CONFIGURATION (I) SAID EYEGLASS FRAMES OR PARTS THEREOF CHARACTERIZED BY THE PROPERTY, UPON DEFORMATION AFTER COMPLETION OF CURING OR POLYMERIZATION, OF RETURNING TO ITS ORIGINAL CAST CONFIGURATION WHEN HEATED TO A TEMPERATURE IN THE RANGE 100 TO 150*F.
Claim 2
Dependent Claim
229 words
A PROCESS FOR CASTING EYEGLASS FRAMES OR PARTS THEREOF COMPRISING (A) FORMING A LIQUID MIXTURE OF SUBSTANTIALLY 100% REACTIVE QUANTITIES OF A DEHYDRIC PHENOL EPOXY COMPOSITION AND A HARDENER, (I) SAID LIQUID MIXTURE CHARACTERIZED BY A VISCOITY OF LESS THAN 20,000 CENTIPOSIES AT 25*C.; (II) SAID LIQUID MIXTURE BEING CAPABLE OF BEING POLYMERIZED OR CURED AT A TEMPERATURE OF APPROXIMATELY 200*F.; (B) HEATING SAID LIQUID MIXTURE TO DECREASE ITS VISCOSITY AND ENHANCE EASE OF DEGASSING (I) MAINTAINING THE LIQUID MIXTURE IN A POURABLE LIQUID-CASTING CONDITION DURING SAID HEATING; (C) CASTING SAID PREHEATED MIXTURE INTO A MOLD HAVING EYEGALSS FRAME OR PARTS CAVITIES OF A DESIRED CONFIGURATION AT A RATE TO PREVENT FORMATION OF GAS BUBBLES IN SAID LIQUID MIXTURE; (D) HEATING SAID MOLD AND SAID CONTAINED LIQUID TO A TEMPERATURE OF AT LEAST 170*F. SUFFICIENT TO POLYMERIZE OR CURE SAID LIQUID MIXTURE; (E) REMOVING POLYMERIZED OF CURED EYEGLASS FRAMES OR PARTS FROM SAID MOLD AT AN ELEVATED TEMPERATURE THEREBY CAUSING DISTORTION OF SAID FRAMES OR PARTS, DEGATING AND REMOVING FLASH FROM SAID FRAMES AND PARTS; AND (F) SUBJECTING THE EYEGLASS FRAMES OR PARTS TO A LIQUID COOLING BATH TO RESTORE CAST CONFIGURATION (I) SAID EYEGLASS FRAMES OR PARTS THEREOF CHARACTERIZED BY THE PROPERTY, UPON DEFORMATION AFTER COMPLETION OF CURING OR POLYMERIZATION, OF RETURNING TO ITS ORIGINAL CAST CONFIGURATION WHEN HEATED TO A TEMPERATURE IN THE RANGE 100 TO 150*F.