Plasma Initiated Polymerization Patents (Class 427/488)
  • Patent number: 5296523
    Abstract: This invention relates to an inorganic colorant, to a paste made from that colorant by dispersing that colorant into a vehicle, and to a water based paint made using either these colorants or pastes. This invention involves an improvement of the dispersibility of the inorganic colorant into a dispersion medium by which that inorganic colorant, having polar groups on its surface, is treated by low temperature plasma polymerization of a substantially non-polar monomer to form a non-polar group on the surface of the inorganic colorant. The inorganic colorants, to which this invention is applied to improve their dispersibility, are of a wide variety of species. According to the invention, due to the great improvement in the dispersibility of the inorganic colorants, the possible range of formulation of inorganic colorant and the dispersion medium is enlarged.
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: March 22, 1994
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Toshikatsu Kobayashi, Kenji Kouguchi, Hiroyuki Kageyama
  • Patent number: 5294463
    Abstract: This invention concerns new molecules with active, non-linear optical properties and which can be thermally reticulated (more precisely, these molecules include terminal functions which can be reticulated, attached to either side of the groups active in non-linear optics, which can be oriented under an electrical field). When reticulated and oriented under an electrical field, these materials are particularly stable and can be employed for industrial applications, using non-linear optics (electrooptical modulators, frequency doublers, etc.).
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: March 15, 1994
    Assignee: Thompson-CSF
    Inventors: Pierre Le Barny, Evelyne Chastaing, Jean-Claude Dubois, Sophie Muller, Francoise Soyer
  • Patent number: 5288816
    Abstract: The present invention relates to nonlinear optical materials comprising aminoaryl hydrazones and to nonlinear optical polymeric compositions containing recurring covalently bonded moieties derived from the aminoaryl hydrazones of the invention. The polymeric compositions of the present invention have high glass transition temperatures and exhibit stable nonlinear optical activity at high temperatures over a period of time.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: February 22, 1994
    Assignee: The Dow Chemical Company
    Inventors: Muthiah N. Inbasekaran, Mark D. Newsham, Michael N. Mang
  • Patent number: 5270267
    Abstract: A method of producing insulating layers over a semiconductor substrate comprising spinning a film of spin-on-glass (SOG) over a semiconductor substrate, precuring the film of SOG at an elevated temperature sufficient to remove the bulk of solvent and curing the film of SOG in a plasma in a plasma reactor of a type exhibiting a self-biased R.sub.F discharge adjacent the SOG for a period of time sufficient to exclude the bulk of SiOH, organic volatiles and H.sub.2 O from the layer.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: December 14, 1993
    Assignee: Mitel Corporation
    Inventor: Luc M. Ouellet
  • Patent number: 5262208
    Abstract: Archival materials including paper manuscripts are preserved by a thin protective polymer film applied to the surface of the item by plasma polymerization of an organic monomer gas in a high frequency glow discharge. The polymer film protects the item against humidity and prevents widening of stroke lines due to ink spreading on the document. Microorganism growth is stopped by pretreatment of the document in a monoatomic gas plasma.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: November 16, 1993
    Assignee: Plasma Plus
    Inventors: Svetlana A. Krapivina, Georgy Z. Paskalov, Alexander K. Filippov
  • Patent number: 5254372
    Abstract: A method for plasma treatment of a predetermined portion of a substrate. The impedance of the coil and an established normal plasma is matched with the impedance of a power source, thereby maximizing the efficiency of the transfer of energy from the power source to the coil and producing a resonant plasma. The predetermined portion of the substrate is exposed to the resonant plasma for treatment. Additionally, a method for plasma treatment of a predetermined portion of the outside surface of a filament. The filament is trained through an inlet and exit of a plasma treatment chamber, through an inlet side tubular mask within the chamber, and through an exit side tubular mask within the chamber, each mask being adjustable within the chamber axially of the filament to expose a predetermined segment of the filament to plasma in the chamber while masking the remainder of the filament within the chamber from exposure to plasma.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: October 19, 1993
    Assignee: Nichols Technologies, Inc.
    Inventor: Michael F. Nichols
  • Patent number: 5247007
    Abstract: Herein provided are a polypropylene resin composition which comprises (A) a polypropylene, (B) an ethylene-propylene-diene terpolymeric rubber having a Mooney viscosity, ML.sub.1+4 (100.degree. C.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: September 21, 1993
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Katsuyuki Nitta, Keigo Suehiro, Yoichi Kawai, Katsumi Sekiguchi, Takeaki Inokuma, Yoshiyasu Kamiya
  • Patent number: 5236564
    Abstract: The invention relates to a process for the coating of electrically conducting substrates in which(1) the substrate is immersed in an aqueous electrocoating paint comprising at least one cathodically depositable resin,(2) the substrate is connected as cathode,(3) a film is deposited on the substrate using direct current,(4) the substrate is removed from the electrocoating paint and(5) the deposited paint film is baked.In this invention an electrically conducting substrate coated by a coating produced by plasma polymerization is employed as substrate.
    Type: Grant
    Filed: November 7, 1991
    Date of Patent: August 17, 1993
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Jan Berg, Rainer Burstinghaus, Hans-Joachim Streitberger, Jurgen Hambrecht
  • Patent number: 5234723
    Abstract: The present invention includes methods for treating particles with plasma activated species. Through the use of the present invention, particles can be functionalized, coated or grafted.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: August 10, 1993
    Assignee: Polar Materials Inc.
    Inventor: Robert J. Babacz
  • Patent number: 5227202
    Abstract: In a plasma-enhanced chemical vapor deposition method, in order to achieve greater space for positioning workpieces to be coated simultaneously and essentially identically on all sides, the workpiece are positioned at a distance from one electrode on the basis of a coating rate gradient.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: July 13, 1993
    Assignee: Balzers Aktiengesellschaft
    Inventors: Francis Thiebaud, Heinrich Zimmermann
  • Patent number: 5217749
    Abstract: A method is disclosed for the deposition of plasma films in which the optical index of refraction of the deposited film can be varied continuously or discontinuously as the material is deposited. The change in refractive index is accomplished by changing the input power applied to the plasma chamber. The method can be used to create optical wave guides from material of a single input monomer vapor.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: June 8, 1993
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Denice D. Denton, Jeffrey A. Tobin
  • Patent number: 5211993
    Abstract: Method of chromatographically separating a mixture by contacting said mixture under chromatographic separation conditions with a chromatographic separation stationary phase comprising a polymer formed by coating substantially all of the surfaces of a microporous, comminuted substrate material with a monomer that is subsequently polymerized in situ with a cold-gas plasma discharge.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: May 18, 1993
    Assignee: Advanced Surface Technology, Inc.
    Inventor: Henry S. Kolesinski
  • Patent number: 5182000
    Abstract: This invention relates to the use of low temperature plasma technology for significantly improved corrosion protection of metals. The plasma process involves pretreatment of the surface of the metal with a gas plasma comprising argon, hydrogen, or mixtures thereof, followed by plasma deposition of a thin polymeric film on the treated surface, followed by cathodic electrocoat application of a primer.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: January 26, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph A. Antonelli, Tyau-Jeen Lin, Duck J. Yang, Hirotsugu Yasuda
  • Patent number: 5153072
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: October 6, 1992
    Assignee: The Board of Regents of the University of Washington
    Inventors: Buddy D. Ratner, Gabriel P. Lopez