摘要:
A thermoset composition exhibiting reduced water absorption in the cured state includes an olefinically unsaturated monomer and a capped poly(arylene ether) prepared by the reaction of an uncapped poly(arylene ether) with an anhydride capping agent. The capped poly(arylene ether) is isolated and/or purified by methods that reduce the concentrations of polar impurities that contribute to water absorption by the cured composition.
摘要:
A curable composition includes an olefinically unsaturated monomer and a poly(arylene ether) having two polymerizable groups and an intrinsic viscosity of about 0.05 to about 0.30 deciliters per gram. The composition exhibits an improved combination of high flow during molding and high post-cure stiffness and impact strength. The composition is particularly useful for fabricating plastic-packaged electronic devices.
摘要:
Disclosed herein is a method comprising inspecting a mold for a defect; determining a type of defect present on the mold; sorting the mold by type of defect present; treating the mold with a cleaning process that is suitable to remove the defect; and pressing the mold against a polymeric film to produce a series of defect free light management films; wherein the yield of light management films manufactured from the mold is higher than the yield of light management films that are produced from a comparative mold that has not been treated with the cleaning process.
摘要:
A curable molding composition is provided having a binder system and a filler system. The molding composition is useful as an electronic material composition for electronic devices.
摘要:
A tack-free composition comprising a functionalized polymer having a having a glass transition temperature greater than about 24° C., a reactive monomer, said reactive monomer having a melting point or softening point greater than about 24° C., a reinforcing filler, and an initiator (curing agent) is provided. The tack-free composition is useful as a molding composition for encapsulation of electronic devices and electronic device components.
摘要:
A curable composition includes an olefinically unsaturated monomer and a poly(arylene ether) having two polymerizable groups and an intrinsic viscosity of about 0.05 to about 0.30 deciliters per gram. The composition exhibits an improved combination of high flow during molding and high post-cure stiffness and impact strength. The composition is particularly useful for fabricating plastic-packaged electronic devices.
摘要:
A thermoset composition exhibiting reduced water absorption in the cured state includes an olefinically unsaturated monomer and a capped poly(arylene ether) prepared by the reaction of an uncapped poly(arylene ether) with an anhydride capping agent. The capped poly(arylene ether) is isolated and/or purified by methods that reduce the concentrations of polar impurities that contribute to water absorption by the cured composition.
摘要:
A curable composition includes a functionalized poly(arylene ether) resin, an acryloyl monomer, and a phosphorus flame retardant. The composition exhibits an improved balance of properties such as toughness, flame retardance, heat-resistance, and moisture resistance. It is useful, for example, as an encapsulant for semiconductor products.
摘要:
A curable composition includes a functionalized poly(arylene ether) resin, an acryloyl monomer, and a metallophosphorus flame retardant. The composition exhibits an improved balance of properties such as toughness, flame retardance, heat-resistance, and moisture resistance. It is useful, for example, as an encapsulant for semiconductor products.
摘要:
Disclosed herein are embossing drums, systems, methods for their use and their maintenance, and films made using the drums. In one embodiment, an embossing drum system can comprise: a mandrel, a primary journal extending from a first end of the mandrel, a secondary journal extending from a second end of the journal, and a seamless sleeve disposed around the mandrel to form a drum. The sleeve comprises a pattern cut into a sleeve outer surface. In one embodiment, a method of making optical films, comprises: introducing a polymer to an embossing drum system, forming the pattern into a surface of the polymer to produce a film, and removing the film from the drum. The embossing drum system comprises a drum with a pattern cut into a drum outer surface. The film has a continuous, seamless pattern having a length that is greater than the drum circumference.