ESTER RESIN COMPOSITION AND PRODUCTION OF MOLDING

• Main Authors: GO YUTAKA, IZUMI HIROFUMI
• Format: Patent
• Language: English
• Published: 30.06.1997
• Edition: 6
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide an ester resin composition which is excellent in ozone resistance, can be rapidly cured without forming molding cracks, and therefore can be shortened in a molding cycle time (high cycle molding) and to produce a molding from this composition. SOLUTION: This composition is prepared by dissolving 15-65 pts.wt. vinyl ester resin obtained by reacting a hydrogenerated bisphenol A epoxy resin with an unsaturated monobasic acid and 15-65 pts.wt. unsaturated polyester resin obtained by reacting an alcohol component containing hydrogenated bisphenol A with an acid component containing 1,4-cyclohexanedicarboxylic acid and an α,β-unsaturated polybasic acid or its reactive acid derivative in 15-60 pts.wt methacrylic acid or its ester derivative to give a total weight of 100 pts.wt. The process for producing a molding comprises molding this composition.