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US 6,300,399 B1Granted
High specific gravity polyester blend
AssigneeGeneral Electric Company
InventorsRobert R. Gallucci, Galina D. Georgieva, Vinod R. Sastri
Life of this patent
Estimating the term…
Abstract
A filled polyester molding composition which, based on the weight of the total composition, comprises (a) from about 5 to about 40 weight percent of a polyester resin; (b) from about 60 to about 95 percent of tungsten metal filler; and (c) from 0 to 20 weight percent of an impact modifier with a specific gravity greater than about 3.0 g./cc.
Claims1
A metal plated filled polyester molded composition comprising:
- a molded composition consisting essentially of (a) 65-80% tungsten powder, (b) 14-35% of a polyalkylene terephthalate, (b) 1-5% of a poly(ether ester) block copolymer, (c) 0-1.0% of a stabilizer selected from the group consisting of hindered phenols, phosphites, phosphonites and thioesters, and a nickel layer plated on the said molded composition, said polyalkylene terephthalate comprises a poly(1,4-butylene terephthalate) and a poly(ethylene terephthalate) in ratio 1:1 to 3:1 of said poly(1,4-butylene terephthalate) to said poly(ethylene terephthalate).
Dependencies are inferred from the claim text.