GB1209019A - 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
GB1209019A
GB1209019A GB3085069A GB3085069A GB1209019A GB 1209019 A GB1209019 A GB 1209019A GB 3085069 A GB3085069 A GB 3085069A GB 3085069 A GB3085069 A GB 3085069A GB 1209019 A GB1209019 A GB 1209019A
Authority
GB
United Kingdom
Prior art keywords
graphite
film
suspension
electrically insulating
graphite layer
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
GB3085069A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1209019A publication Critical patent/GB1209019A/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

1,209,019. Graphite coatings. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 18 June, 1969 [21 June, 1968], No. 30850/69. Heading B2E. [Also in Division H1] 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.
GB3085069A 1968-06-21 1969-06-18 Method of partly coating and electrically insulating surface with a graphite layer Expired GB1209019A (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
GB1209019A true GB1209019A (en) 1970-10-14

Family

ID=19803952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3085069A Expired GB1209019A (en) 1968-06-21 1969-06-18 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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2802462A1 (en) * 1977-01-21 1978-07-27 Sony Corp METHOD AND DEVICE FOR COATING CATHODE BEAM TUBES
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

Families Citing this family (2)

* 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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2802462A1 (en) * 1977-01-21 1978-07-27 Sony Corp METHOD AND DEVICE FOR COATING CATHODE BEAM TUBES
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
NL6808721A (en) 1969-12-23
FR2011432A1 (en) 1970-02-27
ES368554A1 (en) 1971-06-16
DE1926593A1 (en) 1970-01-29
BE734860A (en) 1969-12-19

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees