Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1985-01-09
1987-09-08
Pianalto, Bernard D.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427 41, 427177, 427237, 427238, 427296, B05D 306
Patent
active
046923470
ABSTRACT:
A method and apparatus for providing a thin substantially uniform polymeric coating on the inside surface of tubing. Tubing constituted of dielectric material is passed through a glow discharge zone in which the glow discharge is produced by reactance coupling utilizing power provided by a radio frequency power source. Simultaneously with the movement of the tubing through the glow discharge zone, a monomer that is subject to glow discharge polymerization is passed through the glow discharge zone in the interior of the tubing, while a low absolute pressure is maintained in the interior within the zone. Glow discharge polymerization of the monomer is thereby effected to form a thin polymeric coating on the inside surface of the tubing.
Also disclosed is a novel tubing constituted of dielectric material and having on the inside surface thereof a thin adherent, substantially uniform coating produced by glow discharge polymerization. Further disclosed is a vascular prosthesis having a barrier layer on the inside surface thereof produced by glow discharge polymerization.
REFERENCES:
patent: 4072769 (1978-02-01), Lidel
patent: 4145456 (1979-03-01), Kuppers et al.
H. Yasuda and Toshihiro Hirotsu, Distribution of Polymer Deposition in Plasma Polymerization. I. Acetylene, Ethylene, and the Effect of Carrier Gas, Journal of Polymer Science: Polymer Chemistry Edition, vol. 16, 229-241 (1978).
H. Yasuda and Toshihiro Hirotsu , Distribution of Polymer Deposition in Plasma Polymerization. II. Effect of Reactor Design, Journal of Polymer Science: Polymer Chemistry Edition, vol. 16, 313-326 (1978).
H. Yasuda and N. Morosoff, Plasma Polymerization of Tetrafluorethylene. I. Inductive Radio Frequency Discharge, Journal of Applied Polymer Science, vol. 23, 1003-1011 (1979).
Pianalto Bernard D.
The Curators of the University of Missouri
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