Abstract: A molded article includes a polycarbonate resin and a colorant, and the molded article, when tested using a 3 mm color plaque, includes a color difference delta E (dE*) of less than about 0.6 following molding under abusive molding conditions as compared to a reference article molded under standard processing conditions. The molded article may include a color difference delta b (db*) of less than about 0.3 after being molded under the abusive molding conditions. The molded article may also exhibit a shift in wavelength of maximum absorbance of less than about 5 nm after being molded under the abusive molding conditions and/or a difference in absorbance intensity of less than about 15% after being molded under the abusive molding conditions as compared to a reference article molded under standard processing conditions. Methods for forming a molded article in accordance with the above are also described.

Abstract: tic composition includes: a high heat polycarbonate comprising optional bisphenol A carbonate units and high heat carbonate units of the formula (1), (2), (3), or a combination thereof; optionally a bisphenol A homopolycarbonate; and 2 to 40 ppm of an organosulfonic stabilizer of the formula (a) wherein the high heat carbonate units are present in an amount of 20 to 49 mol %, preferably 30 to 40 mol % based on the sum of the moles of the high heat polycarbonate and the bisphenol A homopolycarbonate, and optionally the high heat polycarbonate comprises less than 2 ppm by weight of each of an ion of lithium, sodium, potassium, calcium, magnesium, ammonium, chlorine, bromine, fluorine, nitrite, nitrate, phosphite, phosphate, sulfate, formate, acetate, citrate, oxalate, trimethylammonium, and triethylammonium, as measured by ion chromatography; and the thermoplastic composition has: a Vicat B120 of 160° C.

Abstract: A melt-blend composition is formed from, based on the total weight of the melt-blend composition, 0 to 5 wt. % of an additive; and 95 to 100 wt. % of a polymer composition, wherein the polymer composition comprises, based on the total weight of the polymer composition, 5 to 95 wt. % of a first copolycarbonate consisting of bisphenol A carbonate units and first additional carbonate units of the formula (II), (II), (III), (IV) or (V); 95 to 5 wt. % of a second copolycarbonate consisting of bisphenol A carbonate units and second additional carbonate units (phthalimidine carbonate units); and 0.001 to 0.1 wt. % of a transesterification catalyst, wherein the melt-blended composition has a haze of less than 15% and a transmission greater than 75%, each measured using the color space CIE1931 (Illuminant C and a 2° observer) at a 3.2 mm thickness.

Abstract: A lens containing a polycarbonate composition is disclosed. The polycarbonate composition includes a copolycarbonate having bisphenol A carbonate units and second carbonate units of the formula and 2 to 40 ppm of an organosulfonic stabilizer of the formula wherein the second carbonate units are present in an amount of 20 to 49 mol %, preferably 30 to 40 mol % based on the sum of the moles of the copolycarbonate and the bisphenol A homopolycarbonate. The polycarbonate composition has: a Vicat B120 of 160° C. or higher measured according to ISO 306; and a yellowness index of less than 12, measured according to ASTM D1925.

Abstract: A flame retardant thermoplastic composition, comprising: 40-94 wt %, or 60-92 wt %, or 75-90 wt % of a polycarbonate, a polycarbonate copolymer, or a combination thereof; 5-19.7 wt %, or 5-15 wt %, or 8-12 wt % of a fiber reinforcement; 0.2-0.9 wt %, preferably 0.2-0.6 wt %, more preferably 0.2-0.5 wt % of potassium perfluorobutane sulfonate; optionally 1-20 ppm, or 1-10 ppm, or 3-5 ppm by weight of a phosphorous-containing acid stabilizer; optionally a colorant; and 0.05-0.4 wt %, or 0.1-0.3 wt %, or 0.1-0.2 wt % of an anti-drip agent, wherein the fluorine content is 0.1-0.5 wt %, or 0.1-0.4 wt %, or 0.1-0.3 wt %, wherein all weight percent values are based on the total weight of the composition, and wherein the total weight percent is 100 wt %, and preferably a molded article of the composition has a UL94 flammability rating of V0 at a thickness of 1.5 mm, or 1.2 mm, or 1.0 mm, or 0.8 mm.

Abstract: A thermoplastic composition, comprising: 40-94 wt %, or 60-92 wt %, or 75-91 wt % of polycarbonate, polycarbonate copolymer, or a combination thereof; 5-20 wt %, or 5-15 wt %, or 8-12 wt % of fiber reinforcement; optionally 1-20 ppm, or 1-10 ppm, or 3-5 ppm of phosphorous-containing acid stabilizer; 0.01-2 wt %, or 0.02-1 wt %, or 0.03-0.5 wt % of a first colorant, wherein the first colorant does not comprise titanium dioxide; 0.05-0.5 wt %, or 0.1-0.4 wt %, or 0.1-0.3 wt % of anti-drip agent; and 0.3-0.9 wt %, or 0.4-0.8 wt %, or 0.4-0.6 wt % of potassium perfluorobutane sulfonate, based on the total weight of the composition, wherein an injection molded sample of the composition subjected to molding conditions comprising a residence time of 600 seconds at 340° C. has a ?E value of less than or equal to 3.5, or less than or equal to 3, or less than or equal to 2.8, at a thickness of 2.5 mm.

Abstract: The disclosure concerns methods for molding a polycarbonate containing plastic, the method including: (a) injecting a composition into a mold, the composition including (i) about 49 wt % to about 97.9 wt % of polycarbonate, (ii) about 2.0 wt % to about 50 wt % of a polycarbonate-polysiloxane copolymer, and (iii) about 0 wt % to about 1.0 wt % of at least one release agent; and (b) releasing the composition from the mold. The mold includes at least one draft angle of about 0.1 degrees to about 7 degrees. The polycarbonate blend includes a melt flow volume rate (MVR) of at least about 25 cm3/10 min as measured according to ISO 1133 at 300° C. and 1.2 kg.

Abstract: A thermoplastic composition comprises: a copolycarbonate comprising bisphenol A carbonate units and second carbonate units of the formula (I); and 2 to 40 ppm of an organosulfonic stabilizer of the formula (II); wherein the second carbonate units are present in an amount of 20 to 49 mol %, preferably 30 to 40 mol % based on the sum of the moles of the copolycarbonate and the bisphenol A homopolycarbonate, and optionally the copolycarbonate comprises less than 2 ppm by weight of each of an ion of lithium, sodium, potassium, calcium, magnesium, ammonium, chlorine, bromine, fluorine, nitrite, nitrate, phosphite, phosphate, sulfate, formate, acetate, citrate, oxalate, trimethylammonium, and triethylammonium, as measured by ion chromatography; and the thermoplastic composition has: a Vicat B120 of 160° C. or higher measured according to ISO 306; and a yellowness index of less than 12, measured according to ASTM D1925.

Abstract: A composition includes a polycarbonate resin formed via an interfacial polymerization process and from 0.05 ppm to 50 ppm of a sulfonic acid. A molded article formed from the composition may exhibit a yellowness index that is less than that of a reference molded article formed from substantially similar polycarbonate composition comprising the polycarbonate resin but in the absence of the sulfonic acid. Methods for forming the molded article in accordance with the above are also described.

Abstract: A thermoplastic composition comprises: a copolycarbonate comprising bisphenol A carbonate units and second carbonate units of the formula and 2 to 40 ppm of an organosulfonic stabilizer of the formula wherein the second carbonate units are present in an amount of 20 to 49 mol %, preferably 30 to 40 mol % based on the sum of the moles of the copolycarbonate and the bisphenol A homopolycarbonate, and optionally the copolycarbonate comprises less than 2 ppm by weight of each of an ion of lithium, sodium, potassium, calcium, magnesium, ammonium, chlorine, bromine, fluorine, nitrite, nitrate, phosphite, phosphate, sulfate, formate, acetate, citrate, oxalate, trimethylammonium, and triethylammonium, as measured by ion chromatography; and the thermoplastic composition has: a Vicat B120 of 160° C. or higher measured according to ISO 306; and a yellowness index of less than 12, measured according to ASTM D1925.

Abstract: A thermoplastic composition comprising, based on the total weight of the thermoplastic composition, 5 to 30 wt. % of a poly(arylene ether-sulfone); and 50 to 95 wt. % of a polycarbonate component comprising a poly(carbonate-siloxane) and optionally a polycarbonate homopolymer; wherein a sample of the composition has a notched Izod impact value of greater than or equal to 30 kJ/m2; a tensile yield strength retention of 80% and higher after exposure of an ISO tensile bar for 24 hours to sunscreen under 0.5% strain compared to a non-exposed reference; and an elongation at break retention of 80% and higher after exposure of an ISO tensile bar for 24 hours to sunscreen under 0.5% strain compared to a non-exposed reference.

Abstract: A composite material, and methods of making thereof, include a polycarbonate substrate and plasma-enhanced chemical vapor deposition formed layers. In particular, a film formed by a process of plasma-enhanced chemical vapor deposition includes: applying a radio frequency bias to a substrate; and supplying a process gas through an antennae, where microwave power applied to the antennae generates plasma of the process gas at the surface of the substrate thereby forming one or more layers on the substrate. In certain aspects the film exhibits one or more (or all) of favorable oxygen transmission rate, barrier improvement factor, optical transmission, surface roughness, chemical resistance and surface roughness properties.

Abstract: A microneedle comprising a shaft has a proximal end and a distal end and, optionally, a capillary space within said shaft, said capillary space (i) connecting said proximal and distal ends or (ii) extending from the distal end of the shaft and connecting with one or more external openings positioned between the proximal end and distal end or (iii) performing the functions of both (i) and (ii). The microneedle includes a polymer mixture that includes (a) polycarbonate, (b) polycarbonate-polysiloxane copolymer and (c) mold release agent.

Abstract: A molded article includes a polycarbonate resin, an ultraviolet (UV) absorbing component, a heat stabilizer component and an acid stabilizer component. The polycarbonate resin is produced by an interfacial polymerization process and has an end-cap level of at least about 98%, and includes a ratio of bound UV absorbing component to free UV absorbing component of less than about 1.0 when molded under abusive molding conditions. The polycarbonate resin may include high purity polycarbonate. The acid stabilizer component may include a sulfonic acid ester. Methods of forming molded articles are also described.

Abstract: Polycarbonate blend compositions are disclosed. The compositions include at least one polycarbonate useful for high heat applications. The compositions can include one or more additional polymers. The compositions can include one or more additives. The compositions can be used to prepare articles of manufacture, and in particular, automotive bezels.

Abstract: A microneedle includes a shaft having a proximal end and a distal end and a capillary space within the shaft, the capillary space (i) connecting the proximal and distal ends or (ii) extending from the distal end of the shaft and connecting with one or more external openings positioned between the proximal end and distal end or (iii) performing the functions of both (i) and (ii). The microneedle includes a polymer mixture which includes (a) optionally polycarbonate, (b) a polycarbonate-polysiloxane copolymer and (c) a mold release agent.

Abstract: A thermoplastic composition comprises: a copolycarbonate comprising bisphenol A carbonate units and second carbonate units of the formula (I) and optionally, a bisphenol A homopolycarbonate; wherein the second carbonate units are present in an amount of 10 to 49 mol % based on the sum of the moles of the copolycarbonate and the bisphenol A homopolycarbonate, the copolycarbonate comprises less than 2 ppm by weight of each of an ion of lithium, sodium, potassium, calcium, magnesium, ammonium, chlorine, bromine, fluorine, nitrite, nitrate, phosphite, phosphate, sulfate, formate, acetate, citrate, oxalate, trimethylammonium, and triethylammonium, as measured by ion chromatography, and the thermoplastic composition has a bisphenol A purity of at least 99.6%, or at least 99.7% as determined by high performance liquid chromatography. The thermoplastic composition has a Vicat B120 of 155° C. or higher; and an increase in yellowness index of less than 10 during 1000 hours of heat aging at 155° C.

Abstract: A molded article includes a polycarbonate resin and a colorant, and the molded article, when tested using a 3 mm color plaque, includes a color difference delta E (dE*) of less than about 0.6 following molding under abusive molding conditions as compared to a reference article molded under standard processing conditions. The molded article may include a color difference delta b (db*) of less than about 0.3 after being molded under the abusive molding conditions. The molded article may also exhibit a shift in wavelength of maximum absorbance of less than about 5 nm after being molded under the abusive molding conditions and/or a difference in absorbance intensity of less than about 15% after being molded under the abusive molding conditions as compared to a reference article molded under standard processing conditions. Methods for forming a molded article in accordance with the above are also described.

Abstract: A molded article includes a polycarbonate resin, an ultraviolet (UV) absorbing component, a heat stabilizer component, and a colorant. The molded article, when tested using a 2.5 mm color plaque, includes a color difference delta E* (dE*) of less than about 0.6 following molding under abusive molding conditions as compared to a reference article molded under standard processing conditions. The molded article may include a color difference delta b* (db*) of less than about 0.3 after being molded under the abusive molding conditions as compared to a reference article molded under standard processing conditions. The UV absorbing component may include a benzotriazole compound. Methods for forming a molded article in accordance with the above are also described.

Abstract: tic composition includes: a high heat polycarbonate comprising optional bisphenol A carbonate units and high heat carbonate units of the formula (1), (2), (3), or a combination thereof; optionally a bisphenol A homopolycarbonate; and 2 to 40 ppm of an organosulfonic stabilizer of the formula (a) wherein the high heat carbonate units are present in an amount of 20 to 49 mol %, preferably 30 to 40 mol % based on the sum of the moles of the high heat polycarbonate and the bisphenol A homopolycarbonate, and optionally the high heat polycarbonate comprises less than 2 ppm by weight of each of an ion of lithium, sodium, potassium, calcium, magnesium, ammonium, chlorine, bromine, fluorine, nitrite, nitrate, phosphite, phosphate, sulfate, formate, acetate, citrate, oxalate, trimethylammonium, and triethylammonium, as measured by ion chromatography; and the thermoplastic composition has: a Vicat B120 of 160° C.