Abstract: A process for preparing high strength carbon fiber from PAN-fiber wherein the time of the oxidation step is reduced from 30-90 minutes to about 8-15 minutes and product prepared therefrom.
Abstract: A process for the rapid precipitation polymerization of acrylonitrile and a minor amount of a vinyl carboxylic acid comonomer in an environment of less than 10 ppm metal-ions to produce an acrylonitrile copolymer which, when pyrolyzed in an oxidizing atmosphere, produces a high quality carbon fiber.
Abstract: A continuous solventless process for preparing elastomeric polyurethane/urea filaments and fibers in a vertical spinning tower and product prepared therefrom.
Abstract: Addition of minor amounts of polymeric ethers, having oxyalkylene tentacles dangling from a carbon backbone, to ultrafiltration membranes improves rate of flow of purified water.
Abstract: A process for the rapid precipitation polymerization of acrylonitrile and a minor amount of a vinyl carboxylic acid comonomer in an environment of less than 10 ppm metal-ions to produce an acrylonitrile copolymer which, when pyrolyzed in an oxidizing atmosphere, produces a high quality carbon fiber.
Abstract: A twist-on attachment for laparoscopic port for withdrawal of smoke and other contaminants from a patient cavity during laparoscopic surgery to provide an atmosphere of enhanced air quality and improved visibility for the surgeon.
Abstract: A process for the rapid precipitation polymerization of acrylonitrile and a minor amount of a vinyl carboxylic acid comonomer in an environment of less than 10 ppm metal-ions to produce an acrylonitrile copolymer which, when pyrolyzed in an oxidizing atmosphere, produces a high quality carbon fiber.
Abstract: A device for removal of smoke from a patient cavity comprising (1) a hollow envelope having a plurality of rearward region-located apertures, a forward region-located first opening for accepting smoke and a substantially middle region-located second opening for dispensing smoke, (2) a first connector for attachment of the device to a laparoscopic assembly and (3) a second connector for attachment of the device to a vacuum pump suction line.