Highly dense thermoplastic molding compositions
AssigneeGeneral Electric Company
InventorsJoel D. Allen, Dennis W. Champlain, Richard J. Clark, Lawrence R. Wallace
Life of this patent
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Abstract
Compositions comprising copolyetherester resins, copolyetherimide ester resins, or mixtures thereof, in combination with a high molecular weight polyester resin or mixture of such resins, with relatively high loadings of fillers selected from zinc oxide, barium sulfate, zirconium oxide, zirconium silicate, strontium sulfate or a mixture of any of such fillers, provide highly dense thermoplastic molded articles with properties suitable to replace ceramics and filled thermosets in many important applications.
Claims29
A thermoplastic resin composition having high impact strength comprising:
- A. from about 80 to about 15 parts by weight of a resinous composition comprising a combination of:
- (a) a copolyetherester resin;
- (b) a copolyetherimide ester resin;
- or
- (c) a mixture of (a) and (b);
- and
- (d) at least one polyester resin having an intrinsic viscosity of at least about 0.4 dl/g as measured in a 60:40 phenol tetrachloroethane mixture at 30.degree. C., and correspondingly,
- B. from 20 to 85 parts by weight of
- at least one filler selected from, barium sulfate, zirconium oxide, zirconium silicate or strontium sulfate.
A thermoplastic resin composition having high impact strength consisting essentially of
- A. from about 50 to about 15 parts by weight of a resinous composition consisting essentially of a combination of:
- (a) a copolyetherester resin;
- (b) a copolyetherimide ester resin;
- or
- (c) a mixture of (a) and (b);
- and
- (d) a polyester resin having an intrinsic viscosity of at lest about 0.4 dl/g as measured in a 60:40 phenol tetrachloroethane mixture at 30.degree. C., and, corresspondingly,
- B. from 50 to 85 parts by weight of:
- (a) a filler selected from zinc oxide, barium sulfate, zirconium oxide, zirconium silicate or strontium sulfate;
- or
- (b) a mixture of any of such fillers.
A thermoplastic resin composition having high impact strength consisting essentially of
- A. from about 40 to about 15 parts by weight of a resinous composition consisting essentially of a combination of:
- (a) a copolyetherester resin;
- (b) a copolyetherimide ester resin;
- or
- (c) a mixture of (a) and (b);
- and
- (d) a polyester resin having an intrinsic viscosity of at least about 0.4 dl/g as measured in a 60:40 phenol tetrachloroethane mixture at 30.degree. C., and, correspondingly,
- B. from 60 to 85 parts by weight of:
- (a) a filler selected from zinc oxide, barium sulfate, zirconium oxide, zirconium silicate or strontium sulfate;
- or
- (b) a mixture of any of such fillers.
Dependencies are inferred from the claim text.