ES368554A1 - Method of partly coating and electrically insulating surface with a graphite layer - Google Patents

Method of partly coating and electrically insulating surface with a graphite layer

Info

Publication number
ES368554A1
ES368554A1 ES368554A ES368554A ES368554A1 ES 368554 A1 ES368554 A1 ES 368554A1 ES 368554 A ES368554 A ES 368554A ES 368554 A ES368554 A ES 368554A ES 368554 A1 ES368554 A1 ES 368554A1
Authority
ES
Spain
Prior art keywords
graphite
film
electrically insulating
graphite layer
suspension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES368554A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES368554A1 publication Critical patent/ES368554A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0201—Impregnation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Insulating Bodies (AREA)
  • Paints Or Removers (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

A method of partly coating an electrically insulating surface (e.g. in a TV picture tube) with a graphite layer in which method a part of the surface which is to remain uncoated is covered with a film of a substance capable of being removed by heating it below 450 C., after which the film is dried and a graphite suspension provided on the part of the surface which is to be coated and also on the part which is to be finally not graphite coated but is covered with the film, the film then being removed by heating it to below 450 C after which the graphite remaining on the surface which is to remain uncoated is removed by brushing or wiping it away. The substance normally an aqueous suspension, is preferably such that the graphite suspension contracts to separate droplets. Polymethacrylate resin in nitrocellulose lacquer with a 4.5 cp viscosity may be introduced into a c.r.t. by raising vessel (3) to provide coating (7) (Figs. 1 and 2 not shown). Graphite suspension (10) is sprayed by the nozzle (9) into the c.r.t. on a horizontal lathe and then heated to 445 C. The edge of the graphite layer tails away (Fig. 4 not shown) reducing corona.
ES368554A 1968-06-21 1969-06-19 Method of partly coating and electrically insulating surface with a graphite layer Expired ES368554A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6808721A NL6808721A (en) 1968-06-21 1968-06-21

Publications (1)

Publication Number Publication Date
ES368554A1 true ES368554A1 (en) 1971-06-16

Family

ID=19803952

Family Applications (1)

Application Number Title Priority Date Filing Date
ES368554A Expired ES368554A1 (en) 1968-06-21 1969-06-19 Method of partly coating and electrically insulating surface with a graphite layer

Country Status (6)

Country Link
BE (1) BE734860A (en)
DE (1) DE1926593A1 (en)
ES (1) ES368554A1 (en)
FR (1) FR2011432A1 (en)
GB (1) GB1209019A (en)
NL (1) NL6808721A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7510274A (en) * 1975-09-01 1977-03-03 Philips Nv PROCEDURE FOR MANUFACTURE OF A CATHODE NOZZLE TUBE WITH AN INTERNAL CONDUCTIVE COVER, DEVICE FOR PERFORMING THE METHOD AND TUBE OBTAINED ACCORDING TO THIS PROCESS.
JPS5249762A (en) * 1975-10-17 1977-04-21 Nippon Electric Glass Co Ltd Dag edge conditioning method
US4125088A (en) * 1977-01-21 1978-11-14 Sony Corporation Automatic spray coating machine
US5156728A (en) * 1987-02-12 1992-10-20 Terumo Kabushiki Kaisha Ion sensor
CN108002690A (en) * 2018-01-04 2018-05-08 中建材（江苏）应用技术研究院有限公司 A kind of new glass pressing machine rib brick and support brick

Also Published As

Publication number Publication date
FR2011432A1 (en) 1970-02-27
GB1209019A (en) 1970-10-14
BE734860A (en) 1969-12-19
NL6808721A (en) 1969-12-23
DE1926593A1 (en) 1970-01-29

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