Abstract:
Fiber grade resin, fiber obtained therefrom, and fiber-containing articles wherein the resin comprises an amide-imide polymer having repeating units of general formula (I), said resin having an inherent viscosity of from about 0.3 to about 1.3 dl/g; an Mn of at least about 5000 g/mole; a ratio of Mw/Mn in the range of from about 1.7 to about 3.3; and a ratio of Mz/Mw of not greater than about 2.3.
Abstract:
Thermoplastic compositions comprising at least one polyetherimide and, as heat release retardants, anhydrous zinc borate and a non-fibrillating fluorocarbon polymer are disclosed. The compositions exhibit improved heat release characteristics.
Abstract:
Flame retardant polyarylether compositions comprising a poly(biphenyl ether sulfone) and anhydrous zinc borate are disclosed. The preferred compositions of the invention are blends of a poly(biphenyl ether sulfone) with a poly(aryl ether ketone) containing anhydrous zinc borate and a fluorocarbon polymer, and optionally titanium dioxide. The preferred compositions exhibit improved heat release characteristics.
Abstract:
A multi-stage process for the retorting of solid, hydrocarbon-containing materials is provided. The solid, hydrocarbon-containing feed material is partially retorted in a dilute phase first fluidized retorting stage at first retorting stage conditions with a temperature elevated relative to ambient conditions and achieved by a method of admixing solid heat carrier containing an active cracking catalyst with the solid, hydrocarbon-containing material. The partially retorted product from the first stage is then substantially completely retorted in a second fluidized retorting stage at second stage retorting conditions, with the second stage retorting temperature being greater than the first stage retorting temperature. Vapor products are removed at intermediate stages so as to avoid undesired degradation.
Abstract:
The invention comprises a multi-layer thermoplastic foam sheet comprising a thermoplastic foam layer adjacent to at least one multi-resin layer, preferably comprising a reclaim material mixture recycled from the sheet manufacturing process, and which comprises a thermoplastic barrier resin. In a preferred embodiment, the multi-layer sheet (10) of the invention comprises a four major layer sheet comprising a barrier film layer which comprises a thermoplastic oxygen barrier resin (11); an inner multi-resin reclaim layer (12) comprising the oxygen barrier resin used in the barrier film layer; a foam core layer (13) adjacent to the inner multi-resin reclaim layer; and an outer multi-resin reclaim layer (14), also comprising the oxygen barrier resin, as the other outer layer of the multi-layer sheet. A method for producing the multi-layer sheets of the invention comprising extrusion coating multi-resin layers onto each side of the foam core layer and then lamination of a barrier film layer onto one of the multi-resin layers.
Abstract:
A process for the production of trimellitic anhydride with improved color is disclosed. The process comprises heat treating trimellitic anhydride in the presence of oxides of boron or hydrated oxides of boron followed by fractionation. Trimellitic anhydride is used in the manufacture of polyesters and polyamide-imides.
Abstract:
A hydrotreating process is provided in which resid and resins are hydrotreated with hydrogen-rich gases in the presence of a hydrotreating catalyst in an ebullated bed reactor.
Abstract:
Sensors capable of measuring various electrolytic parameters such as voltage, state-of-charge, electrolyte level, internal resistance, and temperature are attached to a monitoring module which gathers and processes signals representative of information concerning the electrolytic condition of electrolytic storage cells and transmits the information to a central computer for further processing. In response to commands issued by the central computer, appropriate maintenance and/or repair operations can be initiated. Alternatively, the system described can be used to automatically perform such maintenance tasks as checking and adding electrolyte levels, reducing the voltage whose output voltage is too high, and leveling the state-of-charge of each cell in an array of electrolytic storage cells. The system can monitor other functions of the electrolytic storage cells, including the evolution of hydrogen gas and the accumulation of sediments in individual electrolytic storage cells.
Abstract:
Aqueous dispersion compositions comprise a binder component comprising a film-forming, water-dispersible, carboxyl group-containing elastomeric polymer composition, a thickener component, a chlorinated polyolefin component, and a polyorganosiloxane component dispersed in an aqueous liquid. Such compositions additionally comprising a crosslinking agent and, optionally, colorant composition are used for coating and printing substrates.
Abstract:
This invention relates to an apparatus and a process for uniformly laminating a conductor (18) to a substrate (15). The conductor can be a printed circuit; the substrate can be any dielectric. The apparatus comprises two platens (10, 11) containing cavities (12, 13). One of the cavities (13) contains a mold (14) which is the mirror image of a substrate surface. The other cavity (12) substantially contains the substrate (15). It can have two-dimensional or three-dimensional surfaces to which the printed circuit is laminated. The product results in a superior lamination of the printed circuit across the surface of the substrate.