US4199381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of metals for cold forming
Assignee: GEA Group AG
•
Filing: 1978-08-14
•
Granted: 1980-04-22
•
Expires: 1998-08-14
Abstract
Abstract The application of an aqueous soap to a phosphatized metal surface is improved by including in the soap composition a complex former stable to hydrolysis and capable of forming a water-soluble complex with the metal of the phosphate coating.
Inventors
- 👤 Karl-Heinz Nuss
- 👤 Klaus-Dieter Nittel
- 👤 Han-Yong Oei
- 👤 Gunter Siemund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:40
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/82; C10; C10M; C10M173/00; C10M173/02; C23C22/83; C10M2201/00; C10M2201/02; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/065; C10M2201/066; C10M2201/085; C10M2201/087; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/108; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/044; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/01; C10N2080/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
In a process for facilitating the cold-forming of metals by phosphatizing and subsequent treatment with an aqueous lubricant having an alkali-soap base, the improvement comprising employing a lubricant consisting essentially of between 10 and 100 g/l of alkali soap and between 0.1 and 10 g/l of a complex-former of at least one compound selected from the group consisting of EDTA; NTA; trans-1,2-diamino cyclohexane tetra-acetic acid; diethylene triamine penta-acetic acid; N-hydroxy ethylenediamine tri-acetic acid; N,N-di (β-hydroxyethyl) glycin; sodium glycoheptonate and the alkali metal or ammonium salts of any of the foregoing.
Claim 2
Dependent Claim
90 words
In a process for facilitating the cold-forming of metals by phosphatizing and subsequent treatment with an aqueous lubricant having an alkali-soap base, the improvement comprising employing a lubricant consisting essentially of between 10 and 100 g/l of alkali soap and between 0.1 and 10 g/l of a complex-former of at least one compound selected from the group consisting of EDTA; NTA; trans-1,2-diamino cyclohexane tetra-acetic acid; diethylene triamine penta-acetic acid; N-hydroxy ethylenediamine tri-acetic acid; N,N-di (β-hydroxyethyl) glycin; sodium glycoheptonate and the alkali metal or ammonium salts of any of the foregoing.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the aqueous, soap-containing lubricant comprises more than 40% of C 18 alkali metal soaps.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein the soap deposit is in excess of 5 g/m 2 .
Claim 5
Dependent Claim
15 words
The process of claim 1 wherein the soap coating is dried prior to cold forming.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |