Abstract: A semiconductor device die (10, 116) is disposed on a heat-sinking support structure (30, 100). Nanotube regions (52, 120) contain nanotubes (54, 126) are arranged on a surface of or in the heatsinking support structure (30, 100). The nanotube regions (52, 120) are arranged to contribute to heat transfer from the semiconductor device die (10, 116) to the heat-sinking support structure (30, 100). In one embodiment, the semiconductor device die (10) includes die electrodes (20, 22), and the support structure (30) includes contact pads (40, 42) defined by at least some of the nanotube regions (52). The contact pads (40, 42) electrically and mechanically contact the die electrodes (20, 22). In another embodiment, the heat-sinking support structure (100) includes microchannels (120) arranged laterally in the support structure (100). At least some of the nanotube regions are disposed inside the microchannels (100).

Abstract: Thermoplastic hydrolytically stable polyether sulfones having formal linkages are provided by making a polyethersulfone oligomer having terminal bisphenol linkages, and thereafter effecting reaction between the oligomer and an alkylene or bisalkylene halide. The resulting polyethersulfoneformals provide tough, transparent flexible films on solvent casting or compression molding.

Abstract: Bisphenol-A waste stream derived from the reaction of phenol and acetone in the presence of an acidic condensing agent can be treated with aluminum isopropoxide to obtain good yields of phenol present in the effluent stream either in isolated form or as part of the compounds present in the waste stream.

Abstract: Monocapped bisphenol salts are provided including the monocapped salt of 2,2-bis(4-hydroxyphenyl)propane. Capping is effected by contacting a bisphenol and dihydropyran in the presence of an anhydrous organic solvent and a condensation catalyst. Subsequent decapping is readily achieved under acid conditions. The monocapped bisphenol salts are useful for making intermediate bisphenol oligomers.

Abstract: Linear dimers of certain bisphenols are provided by heating together a monocapped bisphenol salt and a certain dihalogenated alkylene or alkarylene compound in the presence of an inert organic solvent. The linear bisphenol dimers are useful as anti-oxidants and intermediates for making polycarbonates, polyesters and block polymers.

Abstract: Aromatic polycarbonates having chemically combined bisphenol-formal dimer units are provided and method for making such materials. The aromatic polycarbonates are injection moldable and have reduced glass transition temperatures.

Abstract: A process is provided for improving the stability of bisphenols under melt or distillation conditions by employing an aromatic anhydride such as phthalic anhydride as a stabilizing agent. A reduction is effected in the rate of formation of phenol and other cracking products which are decomposition by-products of the bisphenol.