GB1043577A - Process for coating metals - Google Patents

Process for coating metals

Info

Publication number
GB1043577A
GB1043577A GB1612264A GB1612264A GB1043577A GB 1043577 A GB1043577 A GB 1043577A GB 1612264 A GB1612264 A GB 1612264A GB 1612264 A GB1612264 A GB 1612264A GB 1043577 A GB1043577 A GB 1043577A
Authority
GB
United Kingdom
Prior art keywords
litre
mole
polymer
dispersion
fluorocarbon polymer
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
GB1612264A
Inventor
Richard Johnston
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.)
Gillette Industries Ltd
Original Assignee
Gillette 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 Gillette Industries Ltd filed Critical Gillette Industries Ltd
Priority to GB1612264A priority Critical patent/GB1043577A/en
Publication of GB1043577A publication Critical patent/GB1043577A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/54—Razor-blades
    • B26B21/58—Razor-blades characterised by the material
    • B26B21/60—Razor-blades characterised by the material by the coating material

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)
  • Chemically Coating (AREA)

Abstract

Fluorocarbon polymer-coated ferrous metal substrates e.g polytetrafluoroethylene-coated razor blades, are produced by contacting the metal substrate with an aqueous dispersion of the fluorocarbon polymer, the dispersion containing from 0.5 to 5% by weight of the polymer and a water-soluble electrolyte capable of acting as a corrosion promotor with respect to the metal substrate, the concentration of the electrolyte and the pH of the dispersion being such that the electrolyte acts as a corrosion promoter. The dispersion may contain from 1 to 3% by weight of the fluorocarbon polymer. The following electrolytes may be used: hydrogen peroxide, 0.5 x 10-4 to 10-2 mole/litre, pH 1.5 to 3.5; potassium dichromate, 1 x 10-4 to 0.5 x 10-2 mole/litre, pH 1.5 to 3.0; potassium persulphate, 0.5 x 10-4 to 0.2 x 10-2 mole/litre, pH 1.5 to 3.3; ferric chloride, 0.5 x 10-4 to 0.5 x 10-2 mole/litre, pH 1.5 to 3.0; or chromic chloride, 0.2 x 10-4 to 0.3 x 10-3 mole/litre, pH 1.5 to 3.3; ferric nitrate, 1.5 x 10-4 to 1.15 x 10-2 mole/litre, pH 1.5 to 3.5. The metal substrate may be of stainless steel. Cutting edges of stainless steel razor blades may be immersed in or sprayed with the dispersion. After deposition of the fluorocarbon polymer on the substrate, the coating may be dried and sintered. The polymer may be polytetrafluoroethylene and the sintering is effected by heating at 350 DEG C. for at least 15 minutes preferably in a non-oxidizing atmosphere or under a high vacuum. The polymer may be the copolymer of tetrafluoroethylene and hexafluoropropylene.
GB1612264A 1964-04-17 1964-04-17 Process for coating metals Expired GB1043577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1612264A GB1043577A (en) 1964-04-17 1964-04-17 Process for coating metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1612264A GB1043577A (en) 1964-04-17 1964-04-17 Process for coating metals

Publications (1)

Publication Number Publication Date
GB1043577A true GB1043577A (en) 1966-09-21

Family

ID=10071590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1612264A Expired GB1043577A (en) 1964-04-17 1964-04-17 Process for coating metals

Country Status (1)

Country Link
GB (1) GB1043577A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2219966A2 (en) * 1971-03-10 1974-09-27 Amchem Prod Resin coating compsns. from metals - contg. metal ions to control coating wt.
US3960610A (en) * 1966-06-01 1976-06-01 Amchem Products, Inc. Process for coating metals
US4104424A (en) * 1966-06-01 1978-08-01 Amchem Products, Inc. Process for coating metals

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960610A (en) * 1966-06-01 1976-06-01 Amchem Products, Inc. Process for coating metals
US4104424A (en) * 1966-06-01 1978-08-01 Amchem Products, Inc. Process for coating metals
FR2219966A2 (en) * 1971-03-10 1974-09-27 Amchem Prod Resin coating compsns. from metals - contg. metal ions to control coating wt.
US4347172A (en) 1971-03-10 1982-08-31 Amchem Products, Inc. Process and composition for coating metals
US4411937A (en) 1971-03-10 1983-10-25 Amchem Products, Inc. Process and composition for coating metals

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