Abstract:
Thermosetting polymers and the electrical laminates made therefrom are disclosed. The laminate comprises a cross-linked product of: a) one or more ethylenically unsaturated aromatic monomers, with fire retardation being optionally contributed by one halogenated monomer; b) a vinyl-terminated polybutadiene or butadiene-styrene copolymer containing either a urethane or an ester group; and c) a chemically modified polyphenylene ether resin, preferably low molecular weight chemically modified polyphenylene ether resin. It has been discovered that an unexpected combination of thermal, electrical, and mechanical properties are obtained from the composition recited herein. Therefore, the composition is ideally suited as a matrix polymer for electrical substrate applications.
Abstract:
An elastomer-thermoplastic composition comprising styrene butadiene random copolymer and poly(arylene ether) resin and methods of making the composition are disclosed.
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 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 high performance thermoplastic polymer composition having improved melt flow properties, comprising a thermoplastic polymer resin and a low intrinsic viscosity poly(arylene ether). Preferred thermoplastic polymers are poly(imide) polymers.
Abstract:
An elastomer-thermoplastic composition comprising styrene butadiene random copolymer and poly(arylene ether) resin and methods of making the composition are disclosed.
Abstract:
PROBLEM TO BE SOLVED: To provide a production method of practically transparent polymer substrate of X-ray grid for scattering prevention for using in radiation photographing technique for medical diagnosis. SOLUTION: The production method includes a process arranging a phase mask 320 in between a substrate 114 and a high power laser 310, a process radiating laser beam from a laser generator 310, a process adjusting the state of laser beam, a process removing the first part of the substrate 114 by the abrasion using state-controlled laser beam through the phase mask 320 and a process removing the second part of the substrate 114 by the abrasion using state-controlled laser beam through a phase mask 320.