Back to results
US 4,303,573 AGranted
Molding blends comprising polyester, ionomer resin and grafted EPDM
AssigneeE. I. Du Pont de Nemours and Company
InventorGeorge J. Ostapchenko
Life of this patent
Estimating the term…
Abstract
A molding blend of polyethylene terephthalate, a selected ionomeric terpolymer and a selected graft terpolymer provides molded articles of good toughness.
Claims8
A molding blend consisting essentially of
- (a) polyethylene terephthalate,
- (b) 2 to 20% by weight of blend of an ionomeric terpolymer consisting of 60 to 99% by weight ethylene, 0.5 to 20% by weight methacrylic acid, and 0.5 to 20% by weight isobutyl acrylate, in which the acid moieties are neutralized to the extent of 5 to 100% with divalent metallic cations,
- (c) 2 to 20% by weight of blend of a second terpolymer of 60 to 90% by weight ethylene, 10 to 38% by weight propylene, 2 to 10% by weight 1,4-hexadiene and 0 to 5% by weight 2,5-norbornadiene which has 0.2 to 9% by weight succinic groups appended to the terpolymer chain.
Dependencies are inferred from the claim text.