Unsaturated molding compositions containing an unsaturated polyester resin, a polymerizable monomer, an epihalohydrin polymer, and optionally, reinforcing fibers, catalyst, thermoplastic polymers, thickening agent and fillers. The epihalohydrin polymer improves the toughness of the molding composition.
Molding compositions containing a divinyl polyester resin, a polymerizable monomer, an epihalohydrin and, optionally, catalyst and other additives. The epihalohydrin improves the toughness of the divinyl polyester molding compositions.
Alan R. Siebert - Maple Heights OH Eugene H. Rowe - Akron OH
Assignee:
The B. F. Goodrich Company - Akron OH
International Classification:
C08G 4504
US Classification:
260837R
Abstract:
Hard and strong epoxy resin products of high impact resistance are made from a di-epoxy compound, a smaller than equivalent proportion of chain extender which is preferably a bis-phenol, and about 5% (based on the amount of the di-epoxy compound) of a functionally terminated elastomer which is preferably a phenol terminated liquid copolymer of butadiene and acrylonitrile, together with a curing agent active at elevated temperatures.
Alan R. Siebert - Maple Heights OH Eugene H. Rowe - Akron OH
Assignee:
The B. F. Goodrich Company - Akron OH
International Classification:
C08L 9100 C08L 6302 C08L 6310
US Classification:
260 23EP
Abstract:
Hard and strong epoxy resin products of high impact resistance are made from a di-epoxy compound, a smaller than equivalent proportion of a dicarboxylic acid which functions as a chain extender, and a bifunctional liquid elastomer, together with a curing agent active at elevated temperatures. Preferably the quantity of bifunctional liquid elastomer is about 5 to 10% of the amount of the di-epoxy compound.