Abstract: The invention is a method of polymerization comprising contacting the components of the polymerizable composition of

Abstract: A method of coating a substrate which comprises coating a substrate with the composition comprising

Abstract: The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(phenylene sulfide) polymer by forming a mixture of an unsulfonated poly(phenylene sulfide) polymer, an amorphous polymer, and optionally a plasticizer, heating the resulting mixture, extruding or optionally casting the mixture into a membrane, controlled cooling (quenching) or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, and/or after leaching.

Abstract: Polymer blend compositions are prepared having excellent combinations of optical properties, physical properties and hydrolytic stability comprising, in admixture, (a) a diaryl fluorene carbonate polymer and (b) a polysulfone. Preferably, the diaryl carbonate polymer is a copolycarbonate of bisphenol A with bis(hydroxyphenyl) fluorene, preferably 9,9-bis(4-hydroxyphenyl) fluorene. Optionally, the blend compositions also comprise a second non-fluorene carbonate polymer (c). Preferably, the polysulfone is a bisphenol A polysulfone or a polyether poly sulfone. In preferred aspects of this invention, the polysulfone and diaryl carbonate polymer components are selected to provide a transparent blend composition.

Abstract: Fibers of syndiotactic vinylaromatic polymers are prepared in an improved process comprising:A) heating the polymer to a temperature above its crystalline melting point;B) extruding the molten polymer through a multiplicity of orifices in a spinnerette to form fibers;C) drawing the fibers at a spin/draw ratio from 120:1 to 5000:1; andD) cooling the fibers to ambient temperature.

Abstract: The present invention relates to a process for preparing a microporous permselective membrane from a poly(phenylene sulfide) (PPS) polymer, an organic compound which substantially solubilizes the PPS below its melting point to form a homogenous mixture, heating the resulting mixture, extruding or casting the mixture into a membrane (fiber or film), quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, after leaching, or a combination thereof. In one embodiment, the solvent optionally includes an organic non-solvent to assist in obtaining the desired microporsity. The permselective polymers are useful to separate gaseous or liquid components from a mixture of components.

Abstract: The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type polymer, a low melting point crystallizable polymer, and a plasticizer, heating the resulting mixture, extruding or casting the mixture into a membrane, quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, after leaching, or a combination thereof.

Abstract: The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type polymer, an amorphous polymer, and a plasticizer, heating the resulting mixture, extruding or casting the mixture into a membrane, quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, and/or after leaching.

Abstract: Carbonyl-containing polymer films, such as PET, are selectively metallized y contacting the films with a layer or film of metal, such as aluminum, and then irradiating selected portions of the surface of the film with infrared radiation thereby heating those selected portions of the film. The metal on or opposite the irradiated portions of the surface adhere to the film. The remaining metal may be readily removed. The process provides surprisingly good spatial resolution. The present process is particularly useful in the production of microcontacts for circuit boards.

Abstract: A process of three dimensional lithography in amorphous polymers to form an instantaneous, permanent image in the polymer by the steps of providing an undoped, non-crystalline layer or film of a polymer having a stable amorphous state under human operating conditions. The film is preferably poly(ethyleneterphthalate) (PET), poly(aryl-ether-ether-ketone) (PEEK), poly(chloro-trifluoroethylene) (Kel-F.RTM.), poly(carbonate) (ie LEXAN 9032.RTM.), poly(sulfone), poly(methylmethacrylate(PMMA, or LUCITE.RTM.), a poly(cyanurate) such as bisphenol A dicyanate, or an epoxy (eg. Epon 820.RTM.). The film can be either self supporting or mounted on a substrate. The film is then covered (and optionally contacted) with a mask which serves to block the radiation from impinging on where no marking is desired. If the mask is in actual contact with the film, it is capable of also acting as a heat sink.

Abstract: An optical data storage medium comprises a substrate layer, a recording medium and an optional protective layer. The substrate layer supports the recording medium. The recording medium comprises a polymer having stable amorphous and crystalline states under human operating conditions which states have different optical properties. The recording medium is optionally covered and protected by a protective layer. The substrate, recording medium and protective layer can be formed from the same or different polymers. The data is stored by exposing the recording medium to patterned infra-red radiation. The radiation can be patterned by a mask, movement of the radiation beam or by other means to imprint the data on the recording medium.