Abstract: Thermoplastic compositions include: (a) a polycarbonate resin: (b) a poly (carbonate-siloxane) copolymer having a siloxane content of at least about 5 wt %; and (c) from about 0.15 wt % to about 4.5 wt % of a carbon nanotube filler. The carbon nanotubes have an average diameter of from about 8-12 nanometers (nm), a length of about 5 micron (?m) or less, a surface area of about 220 square meters per gram (m2/gr) or higher, and a volume resistivity lower than about 10?2 Ohm·centimeters (Ohm·cm). The composition has a volume electrical resistivity of at least about 1.0E+06 Ohm·cm as determined in accordance with ASTM D257. A molded sample of the composition has a percent absorbed power measured in Transmission mode of at least about 60% when observed according to a Free Space method at frequencies from about 75 GHz to 110 GHZ.

Abstract: Fiber-reinforced composite (e.g., for portable electronic devices), and methods of molding such fiber-reinforced composite parts. Such a fiber-reinforced composite part comprises one or more fiber layers and a plurality of ceramic particles within a polymer matrix such that ceramic particles and polymer are disposed above and below each of the fiber layer(s), with the ceramic particles comprising from 30% to 90% by volume of the composite part, the polymer matrix comprising from 6% to 50% by volume of the composite part, and the fiber layer(s) comprising from 1% to 40% by volume of the composite part; the ceramic particles having a Dv50 of from 50 nanometers to 100 micrometers; the ceramic particles being substantially free of agglomeration; and the composite part having a relative density greater than 90%.

Abstract: A polycarbonate composition includes particular amounts of a bisphenol A polycarbonate homopolymer, a particular polycarbonate-siloxane copolymer a poly(ester-carbonate), and, optionally, an organophosphorus flame retardant. Methods of making the composition and articles including the composition are also described.

Abstract: Disclosed is a composite comprising: from about 50 wt. % to about 99 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polyester; and from about 0.1 wt. % to 15 wt. % of a carbon fiber filler, wherein the carbon fiber has a bulk density of at least 500 g/l and a volume electrical resistivity of less than 2,000??#cm, with individual filaments that have a length-to-diameter ratio of at least 300, wherein a 3.175 mm thick molded sample of the composite exhibits a Transmission of less than 15% of incident microwave radiation when observed according to a Free Space method, measured at frequencies of 75 to 110 GHz, wherein the combined weight percent value of all components does not exceed 100 wt. %, and all weight percent values are based on the total weight of the composite.

Abstract: A poly(phenylene ether) copolymer comprising first repeating units comprising a C1-6alkyl(C6-30cycloalkenyl) pendant group; second repeating units different from the first repeating units; a copolymer of Formula (3); and optionally, at least one terminal functional group comprising (meth)acrylate, styrene, —CH2—(C6H4)—CH?CH2, allyl, cyanate ester, glycidyl ether, anhydride, aniline, maleimide, an activated ester, or a combination thereof.

Abstract: Thermoplastic compositions include: from about 50 wt % to about 70 wt % of a PEEK (polyether ether ketone) component; from about 5 wt % to about 20 wt % of a PEI (polyetherimide) component; and from about 20 wt % to about 40 wt % of a glass fiber component. The combined weight percent value of all components does not exceed 100 wt %, and all weight percent values are based on the total weight of the composition. Methods for forming a molded article including the thermoplastic composition are described.

Abstract: Thermoplastic compositions include: a thermoplastic polymer component including a polyester; and from greater than 0.10 wt % to about 1.95 wt % of a carbon nanotube (CNT) fdler. A 6 in×8 in×? in molded sample of the composition has a percent Absorbed Power measured in Transmission mode of at least 60% when observed at a 77 GHz frequency according to a Free Space method. In some aspects the polyester includes polybutylene terephthalate (PBT). Further aspects include articles (e.g., a radar sensor, a camera, an electronic control unit, etc.) including a molded part including a microwave absorbing material (absorber). The article may have at least two openings to allow the transmission of microwave radiation between a transmitting antenna and a receiving antenna located in/on the printed circuit board of the sensor.

Abstract: Thermoplastic compositions, methods of making the compositions, and articles including the compositions are described. The thermoplastic compositions can contain 30 wt. % to 70 wt. % of a semi-crystalline polyester, 10 wt. % to 50 wt. % of a halogenated polycarbonate, 3 wt. % to 25 wt. % of a first poly(carbonate-siloxane) copolymer having a siloxane content of less than 30 wt. %, wherein the siloxane content is based on the total weight of the first poly(carbonate-siloxane) copolymer, and 3 wt. % to 25 wt. % of a second poly(carbonate-siloxane) copolymer having a siloxane content of greater than 30 wt. %, wherein the siloxane content is based on the total weight of the second poly(carbonate-siloxane) copolymer.

Abstract: Disclosed is a composite comprising from about 50 wt. % to about 97 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polyester; and from about 3 wt. % to about 15 wt. % of a carbon-based filler, wherein the carbon-based filler has a primary surface area of from about 500 to about 1000 m2/g, wherein the composite exhibits a dielectric constant ?? of between 5 and 30 and a dissipation loss ?? of between 0.5 and 45, measured at frequencies between about 10 and about 120 GHz. A molded sample of the composite exhibits a percent reflected power measured in transmission mode of at least 15% when observed according to a Free Space method at frequencies from about 75 GHz to 110 GHz.

Abstract: Thermoplastic compositions include: (a) from about 10 wt % to about 65 wt % of at least one virgin polycarbonate; (b) from about 10 wt % to about 40 wt % of a polybutylene terephthalate (PBT) component derived from a post-consumer recycled (PCR) polymer; (c) from about 25 wt % to about 65 wt % of at least one PCR polycarbonate; (d) from about 10 wt % to about 40 wt % of a polycarbonate-siloxane (PC-Si) copolymer; (e) from 0.1 wt % to about 10 wt % of a phosphazene flame retardant; and (f) from 0.1 wt % to about 2 wt % of a silicone oil.

Abstract: A composition includes particular amounts of a liquid crystalline polymer; a thermoplastic polymer including a polyetherimide, a polyarylate, or a poly(arylene ether-sulfone); and a compatibilizer including a polyepoxy compound or a poly(ester-carbonate). Methods for the manufacture of the compositions and articles including the composition are also provided.

Abstract: Thermoplastic compositions, methods of making the compositions, and composites including the compositions are described. The thermoplastic compositions can contain 55 wt. % to 85 wt. % of a poly(methyl methacrylate) (PMMA) or copolymers thereof, 2 wt. % to 25 wt. % of a poly(carbonate-siloxane) copolymer having a siloxane content of 30 wt. % to 50 wt. %, and an acrylic copolymer based impact modifier.

Abstract: A foamed polymer composition includes a matrix polymer component, and from 0.01 wt % to 2 wt %, based on the weight of the polymer composition, of a nanostructured fluoropolymer, a nanostructured fluoropolymer encapsulated by an encapsulating polymer, or a combination thereof. The matrix polymer component includes polybutylene terephthalate (PBT), polyetherimide (PEI), polyethylene terephthalate (PET), polycarbonate (PC), poly(p-phenylene oxide) (PPO), polystyrene (PS), polyphenylene sulfide (PPS), polypropylene (PP), polyamide (PA), polytrimethylene terephthalate (PTT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), copolymers thereof, or a combination thereof. Methods for forming foamed polymer compositions, including core-back molding methods and extrusion foaming methods, are also described.

Abstract: A method includes depolymerizing post-consumer or post-industrial recycled polyethylene terephthalate (rPET) to form bis(2-hydroxyethyl) terephthalate (BHET), and reacting at least a portion of the BHET with a catalyst to form an alcohol. The alcohol includes cyclohexanedimethanol (CHDM) or 1,4-phenylenedimethanol (PDM). Further steps of the method include polymerizing the alcohol in the presence of additional BHET to form a polyester. The polyester may include poly(cyclohexylenedimethylene terephthalate (PCT), polyethylene terephthalate glycol (PETG) copolyester, polycyclohexylene dimethylene terephthalate glycol (PCTG) copolyester, polycyclohexylene dimethylene terephthalate acid (PCTA), or a monomer having repeating units with the structure (I), wherein n is an integer having a value of at least 20.

Abstract: A method for forming foamed beads includes: saturating pellets with a blowing agent to form saturated pellets; and depressurizing the saturated pellets in a pressure vessel to form the foamed beads. The pellets include: a matrix polymer component, and from 0.01 wt % to 2 wt %, based on the weight of the pellets, of a nanostructured fluoropolymer, a nanostructured fluoropolymer encapsulated by an encapsulating polymer, or a combination thereof.

Abstract: A curable thermosetting composition, comprising a capped poly(arylene ether) copolymer comprising a reactive end group, wherein the capped poly(arylene ether) copolymer is derived from an alkyl, aryl-phenol.

Abstract: A composition includes particular amounts of a poly(phenylene ether), a poly(phenylene ether-siloxane), or a combination thereof; a polyamide composition, wherein the polyamide composition includes at least one polyamide having an amine end group content of less than 75 milliequivalents per gram; and at least one of a polystyrene-poly(ethylene-propylene) diblock copolymer impact modifier, or a polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer impact modifier, or a combination thereof, or an ethylene-propylene-diene monomer-modified polyamide, or a polyamide having an amine end group content of 75 to 140 milliequivalents per gram, as a part of the polyamide composition, or a combination thereof. The composition can be particularly useful for forming various articles.

Abstract: Polymer-ceramic composite articles with relatively low dissipation factor (Df) and relatively high dielectric constant (Dk), as well as polymer-ceramic core-shell powders and pellets adapted for making such composite articles.

Abstract: Methods of forming a ceramic-polymer composite powders comprise: superheating a mixture of polymer, solvent, and ceramic, to dissolve the polymer in the solvent; agitating the superheated mixture while substantially maintaining the mixture at an elevated temperature and pressure; and cooling the mixture to cause the polymer to precipitate on the particles of the ceramic and thereby form a plurality of the present polymer-ceramic core-shell particles. Methods of molding a part comprise subjecting a powder of the present polymer-ceramic core-shell particles that substantially fills a mold to a first pressure while the powder is at or above a first temperature above a melting temperature (Tm) of the polymer. The ceramic can be selected from the group of ceramics consisting of: Al2O3, Fe2O3, ZnO, ZrO2, and SiO2.

Abstract: A film extrusion composition includes specific amounts of a heat-resistant copolycarbonate, a slip agent, and a particulate crosslinked polymethylsilsesquioxane having particles of a specific size. An extruded film prepared from the film extrusion composition exhibits a beneficial balance of telescoping, blocking, and dielectric properties. The extruded film is useful for forming electrostatic film capacitors.