Abstract:
Disclosed are weatherable multilayer articles comprising (i) a coating layer comprising a block copolyestercarbonate comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one aromatic dicarboxylic acid, (ii) a second layer comprising a polymer comprising carbonate structural units, (iii) an adhesive layer comprising a polyester with structural units derived from at least one glycol and at least one dibasic carboxylic acid, and (iv) a substrate layer, wherein the coating layer is in contiguous contact with the second layer, and the adhesive layer is in contiguous contact with the second layer and the substrate layer. Also disclosed is a method for making the multilayer article.
Abstract:
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.
Abstract:
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.
Abstract:
In one embodiment, an embossing drum system comprise: a mandrel (4) having outer surface with an external taper, a primary journal (10) extending from a first end of the mandrel (4), a secondary journal (12) extending from a second end of the mandrel (4), a sleeve (6) having an inner sleeve surface with an internal taper, wherein the sleeve (6) is disposed around the mandrel (4) to form a drum having a substantially constant outer diameter, and a releasable journal support (30,50) engaging the secondary journal (12), wherein a sleeve first end having a smallest inner diameter of the sleeve (6) is disposed adjacent the releasable journal support (30,50). hi one embodiment, a method of drum system maintenance comprises: releasing a journal support (30,50) on the embossing drum system and sliding the sleeve (6) off of the mandrel (4) and over the secondary journal (12).
Abstract:
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.
Abstract:
A curable composition includes a functionalized poly(arylene ether), an olefinically unsaturated monomer, about 0.2 to about 5 parts by weight of a curing initiator per 100 parts by weight total of the functionalized poly(arylene ether) and the olefinically unsaturated monomer, and about 0.005 to about 1 part by weight of a curing inhibitor per 100 parts by weight total of the functionalized poly(arylene ether) and the olefinically unsaturated monomer. The weight ratio of the curing initiator to the curing inhibitor is about 1.2:1 to about 50:1. The composition provides improved and reproducible flow during the early stages of molding without compromising curing time. The composition is useful for preparing plastic-packaged electronic devices.
Abstract:
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.
Abstract:
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.
Abstract:
In one embodiment, a method for making an electroform, comprises passivating a sub-master to form a passivation layer. The passivation comprises contacting at least a surface of the sub-master with a solution comprising an oxidizing agent and applying an anodic current to the sub-master. The surface of the sub-master can be plated with a metal to form a metal layer. The metal layer can be removed to form the electroform.
Abstract:
In one embodiment, an embossing drum system comprise: a mandrel (4) having outer surface with an external taper, a primary journal (10) extending from a first end of the mandrel (4), a secondary journal (12) extending from a second end of the mandrel (4), a sleeve (6) having an inner sleeve surface with an internal taper, wherein the sleeve (6) is disposed around the mandrel (4) to form a drum having a substantially constant outer diameter, and a releasable journal support (30,50) engaging the secondary journal (12), wherein a sleeve first end having a smallest inner diameter of the sleeve (6) is disposed adjacent the releasable journal support (30,50). hi one embodiment, a method of drum system maintenance comprises: releasing a journal support (30,50) on the embossing drum system and sliding the sleeve (6) off of the mandrel (4) and over the secondary journal (12).