GB1180409A - Electrodeposition of Polytetrafluoroethylene on Metals - Google Patents
Electrodeposition of Polytetrafluoroethylene on MetalsInfo
- Publication number
- GB1180409A GB1180409A GB47242/67A GB4724267A GB1180409A GB 1180409 A GB1180409 A GB 1180409A GB 47242/67 A GB47242/67 A GB 47242/67A GB 4724267 A GB4724267 A GB 4724267A GB 1180409 A GB1180409 A GB 1180409A
- Authority
- GB
- United Kingdom
- Prior art keywords
- deposition
- ptfe
- dispersion
- brass
- oct
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/4407—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained by polymerisation reactions involving only carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
- C25D15/02—Combined electrolytic and electrophoretic processes with charged materials
Landscapes
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Wood Science & Technology (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Paints Or Removers (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
1,180,409. Electro-depositing polytetrafluorethylene. FARBWERKE HOECHST A. G. Oct. 17, 1967 [Oct. 17, 1966; Nov. 24, 1966(2)], No. 47242/67. Heading C7B. Crack- and water-free coatings of PTFE are produced on a metallic surface, e. g. of brass, Cu, steel, A1 (preferably phosphated or chromated), Cr or Ni plate or wire, by anodic electro-phoretic deposition from an aqueous dispersion of PTFE e. g. 5-250 g/ 1, which incorporates a fluorinated surface active agent in an amount of 0.001-1 g/1 of the dispersion after polymerization, preferably a perfluorinated carboxylic (e. g. perfluorobutyric or -caprylic) and/or organic sulphonic acid or a water soluble salt (e. g. alkali metal or ammonium) thereof, and sintering the deposited PTFE preferably at 340-380 C. in an inert atmosphere e.g. of N 2 . For a brass or Cu surface, the aqueous dispersion preferably further contains an anodic passivating agent, e. g. 0.1-10 g/ 1 of potassium ferricyanide or ferrocyanide in ammoniacal solution to bring the pH of the dispersion to 10À5-11À5. A steel surface is preferably degreased with trichlorethylene and pickled in mixed HNO 3 + HF acid prior to the deposition. An al surface may be treated in a 10% NaOH solution, then in a solution containing 50 g/ 1 Na 2 C0 3 and 30 g/ 1 Na 2 Cr0 4 prior to the deposition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF0050459 | 1966-10-17 | ||
| DEF0050752 | 1966-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1180409A true GB1180409A (en) | 1970-02-04 |
Family
ID=25977470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB47242/67A Expired GB1180409A (en) | 1966-10-17 | 1967-10-17 | Electrodeposition of Polytetrafluoroethylene on Metals |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3506555A (en) |
| BE (1) | BE705234A (en) |
| GB (1) | GB1180409A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4842940A (en) * | 1985-11-28 | 1989-06-27 | Daikin Kogyo Co, Ltd, | Electrodeposition coating composition, electrodeposition process and electrodeposited article |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3770604A (en) * | 1970-01-02 | 1973-11-06 | Ppg Industries Inc | Electrodeposition over non-conductive primers |
| US4226646A (en) * | 1979-03-26 | 1980-10-07 | E. I. Du Pont De Nemours And Company | Process of coating a ferrous metal substrate with an aqueous fluoropolymer coating |
| CN111636090B (en) * | 2020-05-26 | 2022-03-01 | 珠海冠宇电池股份有限公司 | Nickel-polytetrafluoroethylene coating and wear-resistant anti-static coil needle containing same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2865795A (en) * | 1951-10-30 | 1958-12-23 | Gen Electric | Insulated electrical conductor and method of making the same |
| US2800447A (en) * | 1954-10-11 | 1957-07-23 | Du Pont | Control of ph in electrodeposition of polytetrafluoroethylene |
| GB1033953A (en) * | 1963-02-05 | 1966-06-22 | British Iron Steel Research | Improvements in or relating to the formation of metal coatings |
-
1967
- 1967-10-10 US US674088A patent/US3506555A/en not_active Expired - Lifetime
- 1967-10-17 BE BE705234D patent/BE705234A/xx unknown
- 1967-10-17 GB GB47242/67A patent/GB1180409A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4842940A (en) * | 1985-11-28 | 1989-06-27 | Daikin Kogyo Co, Ltd, | Electrodeposition coating composition, electrodeposition process and electrodeposited article |
Also Published As
| Publication number | Publication date |
|---|---|
| BE705234A (en) | 1968-04-17 |
| US3506555A (en) | 1970-04-14 |
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