Abstract:
A THIN, CONTINUOUS FILM IS FORMED ON A SUBSTRATE BY ULTRAVIOLET SURFACE PHOTOPOLYMERIZATION OF A MATERIAL IN THE GASEOUS PHASE. THE MATERIAL IS SELECTED FROM VARIOUS ANHYDRIDES AND DIANHYDRIDES. SUCH FILMS, WHICH CAN BE SELECTIVELY FORMED AS ELECTRICALLY INSULATING OR ELECTRICALLY CONDUCTIVE, ARE USEFUL AS COATINGS ON METALLIC AND NONMETALLIC SUBSTRATES, AND FOR CORROSION PROTECTION. THE ELECTRICALLY INSULATING FILMS ARE USEFUL FURTHER AS CAPACITOR DIELECTRICS, CRYOGENIC DEVICE INSULATION, INSULATION FOR MICROELECTRIC DEVICES, AND PRIMER OR INSULTION ON ELECTRICALLY CONDUCTIVE WIRE, WHILE THE ELECTRICALLY CONDUCTIVE FILMS CAN ALSO BE EMPLOYED AS CONDUCTIVE LAYERS IN MICROELECTRIC DEVICES.
Abstract:
CAPACITORS ARE PROVIDED HAVING A FIRST METAL SUBSTRATE A DIELECTRIC FILM ON SUCH SUBSTRATE AND A SECOND ELECTRODE ON THE DIELECTRIC FILM WHICH IS MADE BY THE PHOTOPOLYMERIZATION OF CERTAIN PHOTOPOLYMERIZABLE ORGANIC MATERIALS IN VAPOROUS FORM.
Abstract:
Thin, continuous films can be formed on various substrates by the ultraviolet surface polymerization of the vapor of a Nsubstituted maleimide or bis-maleimide. The films are useful as coatings on metallic and non-metallic substrates, capacitor dielectrics, insulation for microelectric devices, insulation on electrically conductive wire, and for corrosion protection.
Abstract:
A PROCESS FOR PRODUCING NOVEL WHITE POWDERY TETRAFLUOROETHYLENE POLYMER BY IRRADIATING TETRAFLUOROETHYLENE MONOMER VAPOR AT A TEMPERATURE RANGING FROM ABOUT 0* TO ABOUT 200*C. AND AT A PRESSURE OF ABOUT 10 TORR TO 760 TOOR WITH ULTRAVIOLET LIGHT HAVING A WAVE LENGTH IN THEE RANGE OF ABOUT 1800 TO 2400 ANGSTROMS. THIS POLYMER CAN BE FUSED GENERALLY AT TEMPERATURES OF ABOUT 350*C. AND LOWER, TO FORM COATINGS, PARTICULARLY WATER-CLEAR COATINGS, SELF-SUPPORTING FILMS AND OTHER SHAPED PRODUCTS.