摘要:
In an embodiment, a melt polymerization process comprising: melt polymerizing reactants in the presence of a catalyst composition to form polymerized polycarbonate, wherein the catalyst composition comprising a catalyst; adding a quencher composition to the polymerized polycarbonate , wherein the quencher composition comprises a quencher; directing the polymerized polycarbonate to an extruder.
摘要:
Interior railway components (seat covers and claddings) comprise a thermoplastic composition comprising: a first polymer comprising bisphenol A carbonate units and monoaryl arylate units, or a second polymer comprising bisphenol A carbonate units, monoaryl arylate units, and siloxane units, or a combination comprising at least one of the foregoing polymers; and an organophosphorus compound; wherein a sample of the thermoplastic composition has: a smoke density after 4 minutes (Ds-4) of equal to or less than 300, an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 600, a maximum average heat release (MAHRE) of equal to or less than 90 kW/m2, and a ductility in multiaxial impact of 100%.
摘要翻译:内部铁路部件(座套和包层)包含热塑性组合物,所述热塑性组合物包含:包含双酚A碳酸酯单元和单芳基芳基化物单元的第一聚合物或包含双酚A碳酸酯单元,单芳基芳基化物单元和硅氧烷单元的第二聚合物, 至少一种前述聚合物; 和有机磷化合物; 其中热塑性组合物的样品具有:等于或小于300的4分钟后的烟密度(Ds-4),等于或高于4分钟的烟密度与时间的函数关系的积分(VOF4)等于或小于 小于600,最大平均放热量(MAHRE)等于或小于90kW / m 2,以及100%的多轴冲击延展性。
摘要:
A polyamide-poly(arylene ether) composition is prepared by melt blending specific amounts of components including a polyamide, a poly(arylene ether), a hydrogenated block copolymer of an alkenyl aromatic monomer and a conjugated diene, a compatibilizing agent, and partially saponified ester of a C16-C36 aliphatic carboxylic acid and a C2-C12 aliphatic alcohol. The composition is useful for molding articles that have a significantly reduced incidence of the cosmetic defect known as silver streaks.
摘要:
In some embodiments, a tool includes, in an injection molding machine, a movable internal core configured to receive a molded plastic layer thereon, the molded plastic layer having a thickness. The tool also comprises an injection nozzle configured to inject plastic material over the movable internal core to form the molded plastic layer; an ejection plate connected to the movable internal core; and multiple, movable support plates each having a thickness. The multiple, movable support plates are located behind the ejection plate. A movable support plate of the multiple, movable support plates is configured to determine the thickness of the molded plastic layer.
摘要:
Disclosed herein is a resin composition for molding a reflector for a light-emitting semiconductor diode comprising about 25 to about 80 wt. % of an heat-resistant aromatic polyester, about 5 to 50 wt.% of titanium dioxide filler; and about 5 to 50 wt.% of a glass fibers having a flat surface. In another aspect of the present invention, there is also provided a reflector for a light-emitting semiconductor element, which includes a molded product of the resin composition. In a further aspect of the present invention, there is also provided a light-emitting semiconductor unit comprising a light-emitting semiconductor diode element, leads connecting electrodes of the light-emitting semiconductor diode element with external electrodes, respectively, and the reflector.
摘要:
A light emitting diode lighting device contains a light emitting diode and a lighting device component, wherein the device component comprises a polycarbonate composition comprising a bisphenol A polycarbonate; and 2,2′-(1,4-phenylene)bis(4H-3,1-benzoxazin-4-one) in an amount effective to provide a composition wherein a molded sample of the composition has a UL94 rating of V-2 or better at a thickness of 0.9 mm; an absorbance of less than 2 a.u. in the region of 370 to 380 nanometers; and an increase in yellowness index (ΔYI) of 12 or less at 2.5 mm thickness after heat aging at 130° C. for 5,000 hours.
摘要:
A coated conductor, such as an insulated electrical wire, is formed by a method that includes a specific poly(arylene ether) composition and an extrusion coating apparatus in which molten poly(arylene ether) composition flows through helical channels en route to covering the previously uncoated conductor. There is a synergy between the use of the helical channels and the poly(arylene ether) composition. Specifically, coated conductor formed using the helical channels and the poly(arylene ether) composition exhibits improved resistance to temperature and humidity variations compared to coated conductor formed using the same poly(arylene ether) composition and so-called heart-sleeve channels. This synergy is not seen with alternative insulation compositions, such as those based on poly(vinyl chloride) and polyethylene.