US4256602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoroborate complex composition and method for cleaning aluminum at low temperatures
Assignee: Arkema Inc
•
Filing: 1978-12-01
•
Granted: 1981-03-17
•
Expires: 1998-12-01
Abstract
Abstract A composition of fluoroborate complex and sulfuric acid and wetting agents is used for cleaning aluminum surfaces.
Inventors
- 👤 Hugh D. McLaughlin, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:23
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/12; C23G1/125
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
78 words
An aqueous cleaning composition for removing and dissolving aluminum fines and cleaning lubricating oils from aluminum surfaces consisting essentially of from about 0.5 to 2.0% by volume of cleaning solution comprised of 93 to 88% by weight of 41.1°Be' sulfuric acid and 7 to 12% by weight of wetting and dispersing agents and 0.005 to 0.10% by volume of fluoroborate complex derived from reacting hydrofluoric acid with boric acid in a ratio of 1.2 to 1 by weight.
Claim 2
Dependent Claim
78 words
An aqueous cleaning composition for removing and dissolving aluminum fines and cleaning lubricating oils from aluminum surfaces consisting essentially of from about 0.5 to 2.0% by volume of cleaning solution comprised of 93 to 88% by weight of 41.1°Be' sulfuric acid and 7 to 12% by weight of wetting and dispersing agents and 0.005 to 0.10% by volume of fluoroborate complex derived from reacting hydrofluoric acid with boric acid in a ratio of 1.2 to 1 by weight.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein the pH is from about 0.8 to 1.5.
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein the wetting agents are selected from the group consisting of non-ionic and anionic surfactants.
Claim 5
Dependent Claim
43 words
Process of cleaning two-piece aluminum cans comprising the application of cleaning composition of claim 1 for a time of about 15 seconds to about 2 minutes to the cans by spraying at a temperature range of about 80° F. to about 125° F.
References Cited (Backward Citations)
US2719079A
Cited
US3106499A
Cited
US3228816A
Cited
US3220899A
Cited
US3331710A
Cited
US4009115A
Cited
US4116853A
Cited
US3969135A
Cited
US4124407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |