Patent DE662322C successfully refreshed from Google Patents.
US4523712A
Expired / Lapsed
US
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Soldering composition and method of soldering therewith
Assignee: AT&T Inc
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Filing: 1984-09-14
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Granted: 1985-06-18
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Expires: 2004-09-14
Abstract
Abstract A solder flux comprises rosin, an activator, an optional surfactant and the dimer of linoleic acid.
Inventors
- 👤 Frank M. Zado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:49
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/3618
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
135 words
A soldering composition comprising a rosin mixture which comprises: (a) rosin; (b) an activator having at least one halogen atom and at least one destabilizing substituent selected from the group consisting of (a') the carboxyl group, (b') the aryl group, (c') the carbonyl group and (d') the halogen atom; (c) a surfactant selected from the group consisting of (a") a polycarboxylic acid, (b") a hydroxyl substituent of (a"), (c") a keto acid and (d") a mixture of any of the foregoing surfactants; and (d) 2 to 25 weight percent of linoleic acid dimer and a metal solder alloy and wherein said activator is present in an amount of from 1 to 15 weight percent and said surfactant is present in an amount of 0 to 25 weight percent of the components (a), (b) and (c).
Claim 2
Dependent Claim
135 words
A soldering composition comprising a rosin mixture which comprises: (a) rosin; (b) an activator having at least one halogen atom and at least one destabilizing substituent selected from the group consisting of (a') the carboxyl group, (b') the aryl group, (c') the carbonyl group and (d') the halogen atom; (c) a surfactant selected from the group consisting of (a") a polycarboxylic acid, (b") a hydroxyl substituent of (a"), (c") a keto acid and (d") a mixture of any of the foregoing surfactants; and (d) 2 to 25 weight percent of linoleic acid dimer and a metal solder alloy and wherein said activator is present in an amount of from 1 to 15 weight percent and said surfactant is present in an amount of 0 to 25 weight percent of the components (a), (b) and (c).
Claim 3
Dependent Claim
17 words
The soldering composition as defined in claim 1 which further comprises a secondary activator comprising an organohydrohalide.
Claim 4
Dependent Claim
13 words
The soldering composition as defined in claim 1 which further comprises a vehicle.
Claim 5
Dependent Claim
29 words
The composition as defined in claim 1 wherein said activator comprises a halogen substituted carboxylic acid selected from the group consisting of a monobasic acid and a polybasic acid.
Claim 6
Dependent Claim
41 words
The composition as defined in claim 4 wherein said surfactant comprising a polycarboxylic acid selected from the group consisting of a dicarboxylic acid having 4 to 10 carbon atoms, a tricarboxylic acid having 6 to 7 atoms and a mixture thereof.
Claim 7
Dependent Claim
44 words
The composition as defined in claim 5 wherein said activator comprises a halogen substituted carboxylic acid selected from the group consisting of a monocarboxylic acid having 12 to 18 carbon atoms, a dicarboxylic acid having 4 to 10 carbon atoms and a mixture thereof.
Claim 8
Dependent Claim
19 words
The composition as defined in claim 1 wherein said rosin mixture comprises rosin, a dibromosuccinic acid and adipic acid.
Claim 9
Dependent Claim
12 words
The composition as defined in claim 7 which further comprises levulinic acid.
Claim 10
Dependent Claim
27 words
The composition as defined in claim 1 wherein said rosin mixture comprises rosin, azelaic acid, and a dibromostyrene activator combined with a secondary activator comprising diethylamine hydrochloride.
Claim 11
Dependent Claim
66 words
The composition as defined in claim 1 wherein, said rosin mixture, said activator is present in an amount ranging from about 1 to about 7 weight percent, said surfactant is present in an amount ranging from about 1 to about 25 weight percent said dimer is present in an amount of from 2 to 25 weight percent and said rosin is present in a remainder amount.
Claim 12
Dependent Claim
41 words
The composition as defined in claim 10 wherein said rosin mixture is combined with a secondary activator comprising an organohydrohalide which is present in an amount of 0.17 to about 0.28 weight percent of the total weight of the combined components.
Claim 13
Independent Claim
108 words
A method of soldering a metal which comprises applying to a surface a soldering flux comprising a rosin mixture of: (a) 50 to 80 weight percent of a rosin; (b) 1 to 15 weight percent of an activator having at least one halogen atom and at least one destabilizing substituent; (c) 0 to 25 weight percent of a surfactant selected from the group consisting of (a') a polycarboxylic acid, (b') a hydroxyl substituent of (a'), (c') a keto acid and (d') a mixture of any of the foregoing surfactants; and (d) 2 to 25 weight percent of the dimer of linoleic acid to form a flux treated surface.
Claim 14
Independent Claim
108 words
A method of soldering a metal which comprises applying to a surface a soldering flux comprising a rosin mixture of: (a) 50 to 80 weight percent of a rosin; (b) 1 to 15 weight percent of an activator having at least one halogen atom and at least one destabilizing substituent; (c) 0 to 25 weight percent of a surfactant selected from the group consisting of (a') a polycarboxylic acid, (b') a hydroxyl substituent of (a'), (c') a keto acid and (d') a mixture of any of the foregoing surfactants; and (d) 2 to 25 weight percent of the dimer of linoleic acid to form a flux treated surface.
Claim 15
Dependent Claim
61 words
The method as defined in claim 12 wherein: said activator comprises a halogen substituted carboxylic acid selected from the group consisting of a monobasic acid having 12 to 18 carbon atoms, a dibasic acid having 4 to 10 carbon atoms and a mixture thereof; and said polycarboxylic acid surfactant and said hydroxyl substituent thereof each comprise 4 to 10 carbon atoms.
Claim 16
Dependent Claim
42 words
The method as defined in claim 12 wherein said surfactant comprises a polybasic acid selected from the group consisting of a dicarboxylic acid having at least 4 carbon atoms, a tricarboxylic acid having 6 to 7 carbon atoms and a mixture thereof.
Claim 17
Dependent Claim
19 words
The method as defined in claim 12 wherein said rosin mixture comprises rosin, a dibromosuccinic acid and adipic acid.
Claim 18
Dependent Claim
15 words
The method as defined in claim 15 wherein said rosin mixture further comprises levulinic acid.
Claim 19
Dependent Claim
41 words
The method as defined in claim 12 wherein said rosin mixture comprises said activator in an amount ranging from about 1 to about 7 weight percent and said surfactant in an amount ranging from about 1 to about 25 weight percent.
Claim 20
Dependent Claim
20 words
The method as defined in claim 12 wherein said rosin mixture is combined with a secondary activator comprising an organohydrohalide.
Claim 21
Dependent Claim
19 words
The method as defined in claim 18 wherein said solder flux comprises a liquid carrier and a foaming expedient.
Claim 22
Dependent Claim
19 words
The method as defined in claim 12 which further comprises applying a solder alloy to said flux treated surface.
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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) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |