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28 records (took 0.022 seconds)

    24.
    发明专利
    未知

    公开(公告)号：DE1244897B

    公开(公告)日：1967-07-20

    申请号：DEP0026542

    申请日：1961-02-08

    Applicant: PHOTOCIRCUITS CORP

    Inventor： JUN FREDERICK W SCHNEBLE ,  ZEBLISKY RUDOLPH J ,  MCCORMACK JOHN FRANCIS ,  POLICHETTE JOSEPH

    IPC: C23C18/16 ,  C23C18/20 ,  H01B3/00 ,  H02K3/26 ,  H05K1/03 ,  H05K3/10 ,  H05K3/18

    Abstract: Process for making printing circuits, characterized by establishing an insulating base for an electrically conductive circuit component, comprising a solid electrically insulating material, at least one of whose surfaces comprises, uniformly distributed, finely divided cuprous oxide particles, present the cuprous oxide on said surface in an amount equivalent to that obtained by combining, by weight, 0.25 to 80% of cuprous oxide and 99.75 to 20% of solid insulating material, distributing it uniformly and fixing or curing the mixture . (Machine-translation by Google Translate, not legally binding)

    Method of making printed circuits
    28.
    发明专利
    Method of making printed circuits 未知

    公开(公告)号：GB979779A

    公开(公告)日：1965-01-06

    申请号：GB83661

    申请日：1961-01-09

    Applicant: PHOTOCIRCUITS CORP

    Inventor： SCHNEBLE FREDERICK W ,  MACCORMACK JOHN F ,  ZEBLISKY RUDOLPH J ,  POLICHETTE JOSEPH

    IPC: C23C18/16

    Abstract: Printed circuits are prepared by providing an insulating base with at least one surface having incorporated therein or thereon finely divided particles of cuprous oxide, curing the adhesive resinous bonding agent used in conjunction with said particles so that they adhere firmly to the base, exposing those particles which correspond with the desired circuit pattern to an acid to reduce at least some of the cuprous oxide to copper, and depositing metal, e.g. copper or nickel from a currentless metal deposition bath on to the copper particles. The circuit may be further built up by depositing more metal electrolytically on it. The insulating base may be of resinous material with incorporated copper oxide particles, or with a layer of resin containing copper oxide particles formed on one if its surfaces. Alternatively copper oxide particles can be applied to the uncured surface of a tacky resin which is then cured, or an adhesive ink containing copper oxide particles may be printed on to the resinous base and cured. When the surface is completely covered with copper oxide particles it is printed with a resist ink and the whole surface is then treated with sulphuric acid to reduce exposed copper oxide to copper. If the proportion of copper oxide particles in the surface is low, it may be necessary lightly to abrade the surface before the acid treatment. Other acids which may be used are acetic, phosphoric and hydrofluoric. In Example 1. A base is moulded from a mixture of epoxy resin, "Ciba 502" (Registered Trade Mark), copper oxide particles and diethylene triimine. One surface is covered with a resist, portions of which are then removed to expose copper oxide, and sulphuric acid is applied for 5-15 minutes. The base is rinsed and copper or nickel deposited in known manner. Copper may subsequently be electrolytically deposited (2). A coating of epoxy resin-cuprous oxide-hardener mixture is applied to a urea-formaldehyde resin support and cured thereon (3). An organosol composition of vinyl chloride-vinyl acetate copolymer, dioctyl phthalate and methyl ethyl ketone is placed in a mould and while still tacky is dusted with cuprous oxide particles and curing is completed. The surface is printed with a resist to leave the circuit pattern expose before treatment as in (1), (4). An ink containing phenol formaldehyde resin, polyvinyl butyral resin, ethanol, cuprous oxide, powdered silica and methyl ethyl ketone is printed on to a polymethyl methacrylate base and the circuit formed as in (1), (5). The ink used contains butadiene-acrylonitrile copolymer, phenolformaldehyde resin, zirconium silicate, silica, cuprous oxide, isophorone and xylene. It is printed on to an epoxy-glass laminate and cured (6). A composition containing epoxy resin, cuprous oxide, polyamide resin, zirconium silicate and silica was moulded and a circuit formed thereon as in example (1). Specification 938,365 is referred to.ALSO:Printed circuits are prepared by providing an insulating base with at least one surface having incorporated therein or thereon finely divided particles of cuprous oxide, curing the adhesive resinous bonding agent used in conjunction with said particles so that they adhere firmly to the base, exposing those particles which correspond with the desired circuit pattern to an acid, to reduce at least some of the cuprous oxide to copper, and depositing metal, e.g. copper or nickel, from a currentless metal deposition bath on to the copper particles. The circuit may be further built up by depositing more metal electrolytically on it. The insulating base may be of resinous material with incorporated copper oxide particles, or with a layer of resin containing copper oxide particles formed on one of its surfaces. Alternatively copper oxide particles can be applied to the uncured surface of a tacky resin which is then cured, or an adhesive ink containing copper oxide particles may be printed on to the resinous base and cured. When the surface is completely covered with copper oxide particles it is printed with a resist ink and the whole surface is then treated with sulphuric acid to reduce exposed copper oxide to copper. If the proportion of copper oxide particles in the surface is low, it may be necessary lightly to abrade the surface before the acid treatment. Other acids which may be used are acetic, phosphoric and hydrofluoric. In Example (1) a base is moulded from a mixture of epoxy resin ("Ciba 502", Registered Trade Mark), copper oxide particles and diethylene triamine. One surface is covered with a resist, portions of which are then removed to expose copper oxide, and sulphuric acid is applied for 5-15 minutes. The base is rinsed and copper or nickel deposited currentlessly in known manner. Copper may subsequently be electrolytically deposited. (2) A coating of epoxy resin-cuprous oxide-hardener mixture is applied to a ureaformaldehyde resin support and cured thereon. (3) An organosol composition of vinyl chloride-vinyl acetate copolymer, dioctylphthalate and methyl ethyl ketone is placed in a mould and while still tacky is dusted with cuprous oxide particles and curing is completed. The surface is printed with a resist to leave the circuit pattern exposed before treatment as in (1). (4) An ink containing phenol formaldehyde resin, polyvinyl butyral resin, ethanol, cuprous oxide, powdered silica and methyl ethyl ketone is printed on to a polymethyl methacrylate base and the circuit formed as in (1). (5) The ink used contains butadiene-acrylonitrile copolymer, phenol-formaldehyde resin, zirconium silicate, silica, cuprous oxide, isophorone and xylene. It is printed on to an epoxy-glass laminate and cured. (6) A composition containing epoxy resin, cuprous oxide, polyamide resin, zirconium silicate and silica was moulded and a circuit formed thereon as in Example (1). Specification 938,365 is referred to.

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