US4915781A
Expired / Lapsed
US
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Stabilized hydrogen peroxide compositions
Assignee: EIDP Inc
•
Filing: 1988-07-27
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Granted: 1990-04-10
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Expires: 2008-07-27
Abstract
Abstract The present invention is directed to a hydrogen peroxide solution stabilized by ##STR1## wherein X is a linking group and Y is a metal cation or H which compound is soluble in hydrogen peroxide. In the second aspect of of the invention, a stabilized hydrogen peroxide solution contains a mineral acid which is suitable for etching a metal surface of a metal substrate such as a printed wiring board.
Inventors
- 👤 Bruce A. Bohnen
- 👤 Kurt E. Heikkila
- 👤 Rodney K. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:42
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/44; C09; C09K; C09K13/00; C09K13/04; C09K13/06; C01; C01B; C01B15/00; C01B15/01; C01B15/037; C23F1/10; C23F1/14; C23F1/16; H; H05; H05K; H05K3/00; H05K3/02; H05K3/06; H05K3/067
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
37 words
A stabilized hydrogen peroxide composition comprising hydrogen peroxide and a compound of the following formula: ##STR6## wherein X is a linking group and Y is a metal cation or H which compound is soluble in hydrogen peroxide.
Claim 2
Dependent Claim
37 words
A stabilized hydrogen peroxide composition comprising hydrogen peroxide and a compound of the following formula: ##STR6## wherein X is a linking group and Y is a metal cation or H which compound is soluble in hydrogen peroxide.
Claim 3
Dependent Claim
21 words
The composition of claim 1 wherein X is a substituted alkyl wherein the alkyl moiety contains 1 to 13 carbon atoms.
Claim 4
Dependent Claim
69 words
The composition of claim 1 wherein X is of the formula: ##STR7## wherein R 1 and R 2 independently of the other are H or C 1-9 alkyl or a C 5 or C 6 saturated or unsaturated cyclic group and m and n independently of the other are an integer of 0 to 9 with the proviso the sum of m and n is not greater than 12.
Claim 5
Dependent Claim
24 words
The composition of claim 3 wherein R 1 and R 2 are the same and are H or a C 1 -C 4 alkyl.
Claim 6
Dependent Claim
9 words
The composition of claim 1 wherein Y is hydrogen.
Claim 7
Dependent Claim
9 words
The composition of claim 3 wherein Y is hydrogen.
Claim 8
Dependent Claim
11 words
The composition of claim 1 which contain a sulfanilic acid compound.
Claim 9
Dependent Claim
41 words
An aqueous chemical etchant composition which comprises: (a) water (b) hydrogen peroxide (c) mineral acid (d) a compound of the formula: ##STR8## wherein X is a linking group and Y is a metal cation which compound is soluble in hydrogen peroxide.
Claim 10
Dependent Claim
41 words
An aqueous chemical etchant composition which comprises: (a) water (b) hydrogen peroxide (c) mineral acid (d) a compound of the formula: ##STR8## wherein X is a linking group and Y is a metal cation which compound is soluble in hydrogen peroxide.
Claim 11
Dependent Claim
22 words
The composition of claim 8 wherein X is a substituted alkyl moiety wherein the alkyl moiety contains 1 to 13 carbon atoms.
Claim 12
Dependent Claim
69 words
The composition of claim 8 wherein X is of the formula ##STR9## wherein R 1 and R 2 independently of the other are H or C 1-9 alkyl or a C 5 or C 6 saturated or unsaturated cyclic group and m and n independently of the other are an integer of 1 to 9 with the proviso the sum of m and n is not greater than 12.
Claim 13
Dependent Claim
23 words
The composition of claim 10 wherein R 1 and R 2 are the same and are H or C 1 -C 4 alkyl.
Claim 14
Dependent Claim
9 words
The composition of claim 8 wherein Y is hydrogen.
Claim 15
Dependent Claim
9 words
The composition of claim 10 wherein Y is hydrogen.
Claim 16
Independent Claim
58 words
A method of etching a surface containing metal comprising etching a surface containing a metal portion with a composition which comprises: (a) water (b) hydrogen peroxide (c) mineral acid (d) and a compound of the formula ##STR10## wherein X is a linking group and Y is a metal cation or H which compound is soluble in hydrogen peroxide.
Claim 17
Independent Claim
58 words
A method of etching a surface containing metal comprising etching a surface containing a metal portion with a composition which comprises: (a) water (b) hydrogen peroxide (c) mineral acid (d) and a compound of the formula ##STR10## wherein X is a linking group and Y is a metal cation or H which compound is soluble in hydrogen peroxide.
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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) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |