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A particulate material for powder bed fusion has specific particle size characteristics and includes a thermoplastic and a sulfonate salt having the structure (A), wherein Z is a phosphorus atom or a nitrogen atom; each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen; b, d, and e are integers from zero to 12; c is 0 or 1 provided that when c is 1, d and e are not both zero; R.sup.11-13 are each independently C.sub.1-C.sub.12 hydrocarbyl; R.sup.14 is C.sub.1-C.sub.18 hydrocarbyl; and Y is selected from (B)—wherein R.sup.15 is hydrogen or C.sub.1-C.sub.12 hydrocarbyl. Also described is a method of powder bed fusion utilizing the particulate material.

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A particulate material for powder bed fusion has specific particle size characteristics and includes a thermoplastic and a sulfonate salt having the structure (A), wherein Z is a phosphorus atom or a nitrogen atom; each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen; b, d, and e are integers from zero to 12; c is 0 or 1 provided that when c is 1, d and e are not both zero; R.sup.11-13 are each independently C.sub.1-C.sub.12 hydrocarbyl; R.sup.14 is C.sub.1-C.sub.18 hydrocarbyl; and Y is selected from (B)—wherein R.sup.15 is hydrogen or C.sub.1-C.sub.12 hydrocarbyl. Also described is a method of powder bed fusion utilizing the particulate material.

A particulate material useful for additive manufacturing contains a semicrystalline polycarbonate or a semicrystalline polyetherimide. The particles of the particulate material are characterized by a narrow volume-based distribution of equivalent spherical diameters in which the median equivalent spherical diameter (Dv50) M is in the range 35 to 85 micrometers, the equivalent spherical diameter corresponding to 1 percent of the cumulative undersize distribution (DvO1) is greater than 2 micrometers, and the equivalent spherical diameter corresponding to 99 percent of the cumulative undersize distribution (Dv99) is less than 115 micrometers. Also described is a method of additive manufacturing utilizing the particulate material.

A particulate material useful for additive manufacturing contains a semicrystalline polycarbonate or a semicrystalline polyetherimide. The particles of the particulate material are characterized by a narrow volume-based distribution of equivalent spherical diameters in which the median equivalent spherical diameter (Dv50) M is in the range 35 to 85 micrometers, the equivalent spherical diameter corresponding to 1 percent of the cumulative undersize distribution (DvO1) is greater than 2 micrometers, and the equivalent spherical diameter corresponding to 99 percent of the cumulative undersize distribution (Dv99) is less than 115 micrometers. Also described is a method of additive manufacturing utilizing the particulate material.

Ways of preparing a partially crystalline polycarbonate powder are provided that include dissolving an amorphous polycarbonate in a polar aprotic solvent to form a first solution of solubilized polycarbonate at a first temperature. The first solution is then cooled to a second temperature, the second temperature being lower than the first temperature, where a portion of the solubilized polycarbonate precipitates from the first solution to form a second solution including the partially crystalline polycarbonate powder. Certain partially crystalline polycarbonate powders resulting from such methods are particularly useful in additive manufacturing processes, including powder bed fusion processes.

Provided is an optically clear protective cover plate for Human Machine Interface (HMI) touch panel displays wherein the cover plate is formed from a thermoplastic polymer comprising a high melt flow polycarbonate. The polycarbonate is characterized by a melt flow rate (MFR), or melt flow index (MFI), of between about 60 and about 80 g/10 min (ASTM D-1238, 300′C/1.2 kg).

Provided is an optically clear protective cover plate for Human Machine Interface (HMI) touch panel displays wherein the cover plate is formed from a thermoplastic polymer comprising a high melt flow polycarbonate. The polycarbonate is characterized by a melt flow rate (MFR), or melt flow index (MFI), of between about 60 and about 80 g/10 min (ASTM D-1238, 300′C/1.2 kg).

Ways of preparing a partially crystalline polycarbonate powder are provided that include dissolving an amorphous polycarbonate in a polar aprotic solvent to form a first solution of solubilized polycarbonate at a first temperature. The first solution is then cooled to a second temperature, the second temperature being lower than the first temperature, where a portion of the solubilized polycarbonate precipitates from the first solution to form a second solution including the partially crystalline polycarbonate powder. Certain partially crystalline polycarbonate powders resulting from such methods are particularly useful in additive manufacturing processes, including powder bed fusion processes.

To provide a resin composition that excels both in transparency and mechanical strength, as well as a formed article, and a formed article with hard coat layer. The resin composition contains 5 to 100 parts by mass of a glass filler, per 100 parts by mass of a resin component, the resin component containing 40 to 85 parts by mass of a polycarbonate resin that contains a structural unit represented by Formula (1), and 15 to 60 parts by mass of a thermoplastic resin other than the polycarbonate resin, the resin component and the glass filler demonstrating an absolute difference in refractive index of 0.0042 or smaller, and the resin component demonstrating a coefficient of dynamic friction, measured in compliance with ISO 19252, of 0.40 or smaller: In Formula (1), R.sup.1 represents a methyl group.

##STR00001##

To provide a resin composition that excels both in transparency and mechanical strength, as well as a formed article, and a formed article with hard coat layer. The resin composition contains 5 to 100 parts by mass of a glass filler, per 100 parts by mass of a resin component, the resin component containing 40 to 85 parts by mass of a polycarbonate resin that contains a structural unit represented by Formula (1), and 15 to 60 parts by mass of a thermoplastic resin other than the polycarbonate resin, the resin component and the glass filler demonstrating an absolute difference in refractive index of 0.0042 or smaller, and the resin component demonstrating a coefficient of dynamic friction, measured in compliance with ISO 19252, of 0.40 or smaller: In Formula (1), R.sup.1 represents a methyl group.

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