GB1043577A - Process for coating metals - Google Patents
Process for coating metalsInfo
- 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
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.
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)
| 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 |
-
1964
- 1964-04-17 GB GB1612264A patent/GB1043577A/en not_active Expired
Cited By (5)
| 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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