US3674699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noncorrosive cleaning composition and process
Assignee: Henkel Corp
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Filing: 1970-02-11
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Granted: 1972-07-04
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Expires: 1990-02-11
Abstract
Abstract An improved composition and process for cleaning metal surfaces, and particularly aluminum and aluminum alloy surfaces wherein the cleaning is effected by using an aqueous alkaline solution which contains borates as the main alkaline component and, additionally, contain one or more vanadium compounds. Additionally, if desired, the cleaning compositions may also contain one or more non-ionic surface active agents and/or an ionic wetting agents.
Inventors
- 👤 Friedrich Dittel
- 👤 Peter Jorns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:51
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/14; C23G1/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
33 words
The composition as claimed in claim 1 wherein the solution contains from about 10 to 100 grams per liter of a borate and from about 0.1 to 3.0 grams per liter vanadium ions.
Claim 2
Dependent Claim
45 words
The composition as claimed in claim 2 wherein the solution also contains at least one surface active agent agent selected from non-ionic surface active agents and anionic surface active agents, in a total amount within the range of about 1 to 10 grams per liter.
Claim 3
Dependent Claim
42 words
The composition as claimed in claim 3 wherein vanadium ions are added to the solution in the form of a compound selected from alkali metavanadates, alkali orthovanadates and alkali pyrovanadates, and the borate compound is selected from sodium tetraborate and sodium polyborate.
Claim 4
Dependent Claim
19 words
The composition as claimed in claim 3 wherein the borate compound is selected from sodium tetraborate and sodium polyborate.
Claim 5
Dependent Claim
50 words
A method for cleaning surfaces of aluminum and aluminum alloys, zinc and zinc alloys, or ferrous metal wHich comprises contacting the surface to be treated with the cleaning solution of claim 1 and maintaining the solution in contact with the surface for a time sufficient to effect substantial cleaning thereof.
Claim 6
Dependent Claim
18 words
The method as claimed in claim 6 wherein the metal surfaces are immersed in the aqueous cleaning solution.
Claim 7
Dependent Claim
36 words
The method as claimed in claim 7 wherein the aqueous cleaning solutions contain from about 10 to 100 grams per liter of the borate and from about 0.1 to 3.0 grams per liter of vanadium ions.
Claim 8
Dependent Claim
44 words
The method as claimed in claim 8 wherein the solutions also contain at least one surface active agent selected from non-ionic surface active agents and anionic surface active agents in a total amount within the range of about 1 to 10 grams per liter.
Claim 9
Dependent Claim
19 words
The method as claimed in claim 9 wherein the borate compound is selected from sodium tetraborate and sodium polyborate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |