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A glass fiber-filled poly(arylene ether)/polyamide composition exhibits reduced die build-up during profile extrusion. The composition includes specific amounts of polyamide, poly(arylene ether), glass fibers, and polypropylene. The reduced die build-up means that the profile extrusion equipment nee

A glass fiber-filled poly(arylene ether)/polyamide composition exhibits reduced die build-up during profile extrusion. The composition includes specific amounts of polyamide, poly(arylene ether), glass fibers, and polypropylene. The reduced die build-up means that the profile extrusion equipment needs to be shut down and cleaned less often, resulting in a substantial productivity improvement.

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1. A method of profile extrusion, comprising: extruding through a die a thermoplastic composition having a temperature of about 275 to about 310° C.; andcooling the extruded composition to form an extruded thermoplastic article;wherein the thermoplastic composition comprises the product of melt blen

1. A method of profile extrusion, comprising: extruding through a die a thermoplastic composition having a temperature of about 275 to about 310° C.; andcooling the extruded composition to form an extruded thermoplastic article;wherein the thermoplastic composition comprises the product of melt blending about 35 to about 55 weight percent of a polyamide,about 30 to about 50 weight percent of a poly(arylene ether),about 5 to about 15 weight percent of glass fibers,about 0.5 to about 4 weight percent of a polypropylene, andone or both of about 0.5 to about 2 weight percent of low density polyethylene, andabout 0.02 to about 0.5 weight percent of a copolymer of vinylidene fluoride and hexafluoropropylene, the copolymer having a fluorine content of about 60 to about 70 weight percent based on the total weight of the copolymer;wherein all weight percents are based on the total weight of the thermoplastic composition unless a different weight basis is specified. 2. The method of claim 1, wherein the polypropylene is a homopolypropylene having a weight average molecular weight of at least 15,000 atomic mass units. 3. The method of claim 1, wherein the polyamide comprises a polyamide-6,6. 4. The method of claim 1, wherein the poly(arylene ether) comprises a poly(2,6-dimethyl-1,4-phenylene ether) having an intrinsic viscosity of about 0.35 to about 0.5 deciliter per gram measured at 25° C. in chloroform. 5. The method of claim 1, wherein the thermoplastic composition comprises the low density polyethylene. 6. The method of claim 1, wherein the thermoplastic composition comprises the copolymer of vinylidene fluoride and hexafluoropropylene. 7. The method of claim 1, wherein the thermoplastic composition comprises the low density polyethylene and the copolymer of vinylidene fluoride and hexafluoropropylene. 8. The method of claim 1, wherein the thermoplastic composition comprises less than or equal to 0.5 weight percent of an unhydrogenated or hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene. 9. The method of claim 1, wherein the thermoplastic composition comprises less than or equal to 5 weight percent of homopolystyrene. 10. The method of claim 1, wherein the thermoplastic composition comprises less than or equal to 1 weight percent of impact modifiers. 11. The method of claim 1, wherein the thermoplastic composition comprises less than or equal to 0.3 weight percent of electrically conductive agents. 12. The method of claim 1, wherein the composition thermoplastic comprises a continuous phase comprising the polyamide and a disperse phase comprising the poly(arylene ether). 13. The method of claim 1, wherein the thermoplastic composition is extruded through the die at a temperature of about 280 to about 300° C.;wherein the thermoplastic composition comprises about 40 to about 50 weight percent of the polyamide,about 35 to about 45 weight percent of the poly(arylene ether),about 7 to about 13 weight percent of the glass fibers,about 1 to about 3 weight percent of the polypropylene,about 0.5 to about 2 weight percent of the low density polyethylene, andabout 0.02 to about 0.5 weight percent of the copolymer of vinylidene fluoride and hexafluoropropylene;wherein the polyamide comprises a polyamide-6,6;wherein the poly(arylene ether) comprises a poly(2,6-dimethyl-1,4-phenylene ether) having an intrinsic viscosity of about 0.35 to about 0.46 deciliter per gram measured at 25° C. in chloroform; andwherein the polypropylene is a homopolypropylene having a weight average molecular weight of about 20,000 to about 500,000 atomic mass units. 14. A profile-extruded article produced by the method of claim 1. 15. A thermoplastic composition, comprising: about 35 to about 55 weight percent of a polyamide,about 30 to about 50 weight percent of a poly(arylene ether),about 5 to about 15 weight percent of glass fibers,about 0.5 to about 4 weight percent of a polypropylene, andone or both of about 0.5 to about 2 weight percent of low density polyethylene, andabout 0.02 to about 0.5 weight percent of a copolymer of vinylidene fluoride and hexafluoropropylene, the copolymer having a fluorine content of about 60 to about 70 weight percent based on the total weight of the copolymer;wherein all weight percents are based on the total weight of the thermoplastic composition unless a different weight basis is specified. 16. The thermoplastic composition of claim 15, wherein the polypropylene is a homopolypropylene having a weight average molecular weight of at least 15,000 atomic mass units. 17. The thermoplastic composition of claim 15, wherein the polyamide comprises a polyamide-6,6. 18. The thermoplastic composition of claim 15, wherein the poly(arylene ether) comprises a poly(2,6-dimethyl-1,4-phenylene ether) having an intrinsic viscosity of about 0.35 to about 0.5 deciliter per gram measured at 25° C. in chloroform. 19. The thermoplastic composition of claim 15, comprising the low density polyethylene. 20. The thermoplastic composition of claim 15, comprising the copolymer of vinylidene fluoride and hexafluoropropylene. 21. The thermoplastic composition of claim 15, comprising the low density polyethylene and the copolymer of vinylidene fluoride and hexafluoropropylene. 22. The thermoplastic composition of claim 15, comprising less than or equal to 0.5 weight percent of an unhydrogenated or hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene. 23. The thermoplastic composition of claim 15, comprising less than or equal to 5 weight percent of homopolystyrene. 24. The thermoplastic composition of claim 15, comprising less than or equal to 1 weight percent of impact modifiers. 25. The thermoplastic composition of claim 15, comprising less than or equal to 0.3 weight percent of electrically conductive agents. 26. The thermoplastic composition of claim 15, comprising a continuous phase comprising the polyamide and a disperse phase comprising the poly(arylene ether). 27. The thermoplastic composition of claim 15, wherein the thermoplastic composition comprises about 40 to about 50 weight percent of the polyamide,about 35 to about 45 weight percent of the poly(arylene ether),about 7 to about 13 weight percent of the glass fibers, andabout 1 to about 3 weight percent of the polypropylene,about 0.5 to about 2 weight percent of the low density polyethylene, andabout 0.02 to about 0.5 weight percent of the copolymer of vinylidene fluoride and hexafluoropropylene;wherein the polyamide comprises a polyamide-6,6;wherein the poly(arylene ether) comprises a poly(2,6-dimethyl-1,4-phenylene ether) having an intrinsic viscosity of about 0.35 to about 0.46 deciliter per gram measured at 25° C. in chloroform; andwherein the polypropylene is a homopolypropylene having a weight average molecular weight of about 20,000 to about 500,000 atomic mass units. 28. A profile-extruded article comprising the composition of claim 15.