US3905907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solutions for chemical dissolution treatment of metal materials
Assignee: Furukawa Electric Co Ltd
•
Filing: 1973-12-18
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Granted: 1975-09-16
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Expires: 1993-12-18
Abstract
Abstract The present invention relates to solutions used for chemical dissolution treatment such as, pickling, etching, chemical polishing, etc., of metallic materials. In such a treatment, however, where hydrogen peroxide is used as an oxidizing agent, a considerable excess of the agent is required due to low efficiency. On the other hand, when chloride ions are contained in the solution, the dissolution rate of metallic materials is remarkably decreased. The present invention has overcome the above difficulties by using a solution for chemical dissolution treatment of metallic materials containing hydrogen peroxide, an acid and at least one of an alcohol polyoxyethylene ether, an alkylsulfonic acid, an alkyl hydrogen phosphate, an alkyl hydrogen phosphite, an alkyl hydrogen sulfate and their salts.
Inventors
- 👤 Shoji Shiga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:13
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23G; C23G1/00; C23G1/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
54 words
A SOLUTION FOR THE CHEMICAL DISSOLUTION TREATMENT OF METAL MATERIALS COMPRISING WATER, 0.1 TO 10 G/L IN HYDROGENION CONCENTRATION OF AN ACID, 0.1 - 300 G/L OF HYDROGEN PEROXIDE AND 0.001 - 20 G/L OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF A. AN ALCOHOL POLYOXYETHYLENE ETHER REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
54 words
A SOLUTION FOR THE CHEMICAL DISSOLUTION TREATMENT OF METAL MATERIALS COMPRISING WATER, 0.1 TO 10 G/L IN HYDROGENION CONCENTRATION OF AN ACID, 0.1 - 300 G/L OF HYDROGEN PEROXIDE AND 0.001 - 20 G/L OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF A. AN ALCOHOL POLYOXYETHYLENE ETHER REPRESENTED BY THE FORMULA
Claim 3
Dependent Claim
20 words
A solution according to claim 1, in which the concentration of the alcohol polyoxyethylene ether is 0.1 to 15 g/l.
Claim 4
Dependent Claim
27 words
A solution according to claim 1, in which the concentration of the alkyl hydrogen phosphate, the alkyl hydrogen phosphite or their salts is 0.01 to 5 g/l.
Claim 5
Dependent Claim
25 words
A solution according to claim 1, in which R1 of the alcohol polyoxyethylene ether is an aliphatic hydrocarbon residue having 8 to 18 carbon atoms.
Claim 6
Dependent Claim
31 words
A solution according to claim 1, in which R1 of the alcohol polyoxyethylene ether is an aliphatic hydrocarbon residue having 12 to 16 carbon atoms, and n is 6 to 12.
Claim 7
Dependent Claim
23 words
A solution according to claim 1, in which R3 and R4 are normal chain alkyl groups, each having 2 to 8 carbon atoms.
Claim 8
Dependent Claim
26 words
A solution used for the pickling of metal materials according to claim 1, in which the concentration of the hydrogen peroxide is 0.1 to 100 g/l.
Claim 9
Dependent Claim
29 words
A solution used for the etching or chemical milling of metal materials according to claim 1, in which the concentration of the hydrogen peroxide is 5 to 200 g/l.
Claim 10
Dependent Claim
27 words
A solution used for the chemical polishing of metal materials according to claim 1, in which the concentration of the hydrogen peroxide is 10 to 300 g/l.
Claim 11
Dependent Claim
28 words
A solution according to claim 1, in which the acid is sulfuric acid, sulfamic acid, acetic acid, hydrochloric acid, phosphoric acid, hydrofluoric acid, fluoroboric acid, or hydrofluosilicic acid.
Claim 12
Dependent Claim
21 words
A solution for the chemical dissolution treatment of metal materials according to claim 1, in which the acid is sulfuric acid.
Claim 13
Dependent Claim
26 words
A solution for the chemical dissolution treatment of metal materials according to claim 1, in which the solution contains at least hydrofluoric acid as the acid.
Claim 14
Dependent Claim
28 words
A solution for the chemical dissolution treatment of metal material according to claim 1, which further contains 0.1 to 5, 000 ppm of glue, gelatine or hydrolyzates thereof.
Claim 15
Dependent Claim
27 words
A solution for the chemical dissolution treatment of metal materials according to claim 1, which further contains 1 to 500 ppm of glue, gelatine or hydrolyzates thereof.
Claim 16
Dependent Claim
11 words
A solution according to claim 1, containing the alcohol polyoxyethylene ether.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |