US4151015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux for use in soldering
Assignee: Lake Chemical Co
•
Filing: 1977-12-02
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Granted: 1979-04-24
•
Expires: 1997-12-02
Abstract
Abstract Water-soluble or readily water-dispersible fluxes for use in connection with soldering operations in plumbing and related or other environments, particularly for use in connection with the soldering of water lines made from copper or copper-base alloys. The said water-soluble or readily water-dispersible fluxes are produced in the form of pastes in which the paste-forming ingredients are water-soluble surfactants or mixtures of surfactants, especially those of nonionic character, with or without water, but especially where water is present in amounts of at least several percent by weight of the finished flux composition, said paste flux compositions also containing water-soluble amine hydrochlorides, and, advantageously, ammonium chloride, with or without various supplemental ingredients which, when used, are employed in small proportions.
Inventors
- 👤 Robert N. Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:13
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
114 words
A water-soluble paste-form soldering flux composition having particular utility for the soldering of copper and copper-base alloy water lines, said flux composition consisting essentially of at least one surfactant selected from the class consisting of nonionic surfactants of the class of water-soluble ethylene oxide adducts and ethylene oxide-propylene oxide adducts and anionic water-soluble surfactants, said surfactants as such or in admixture in the flux composition being in the form of a paste, and a water-soluble organic amine hydrohalide in which the hydrohalide is selected from the group consisting of hydrochlorides, hydrobromides and hydrofluorides, said organic amine hydrohalide being present in a proportion of from about 2 to 80 weight % of said flux composition.
Claim 2
Dependent Claim
114 words
A water-soluble paste-form soldering flux composition having particular utility for the soldering of copper and copper-base alloy water lines, said flux composition consisting essentially of at least one surfactant selected from the class consisting of nonionic surfactants of the class of water-soluble ethylene oxide adducts and ethylene oxide-propylene oxide adducts and anionic water-soluble surfactants, said surfactants as such or in admixture in the flux composition being in the form of a paste, and a water-soluble organic amine hydrohalide in which the hydrohalide is selected from the group consisting of hydrochlorides, hydrobromides and hydrofluorides, said organic amine hydrohalide being present in a proportion of from about 2 to 80 weight % of said flux composition.
Claim 3
Dependent Claim
25 words
A flux composition according to claim 1, in which the proportions of the organic amine hydrohalide are from about 5 to about 20 weight %.
Claim 4
Dependent Claim
13 words
A flux composition according to claim 1, in which the hydrohalide is hydrochloride.
Claim 5
Dependent Claim
16 words
A flux composition according to claim 1, in which the organic amine hydrohalide is monoethanolamine hydrochloride.
Claim 6
Dependent Claim
21 words
A flux composition according to claim 1, which also includes from about 1 to about 15 weight % of ammonium chloride.
Claim 7
Dependent Claim
24 words
A flux composition according to claim 1, which contains water in an amount in the range of about 10 to about 40 weight %.
Claim 8
Dependent Claim
48 words
A flux composition according to claim 1, in which the organic amine hydrohalide is monoethanolamine hydrochloride and which is present in proportions of about 5 to about 20 weight %, and in which said flux also includes from about 2 to about 6 weight % of ammonium chloride.
Claim 9
Dependent Claim
27 words
A flux composition according to claim 3, in which an excess of monoethanolamine is present over stoichiometric proportions and sufficient to at least neutralize the monoethanolamine hydrochloride.
Claim 10
Dependent Claim
88 words
A water-soluble paste-form flux composition having particular utility for the soldering of copper and copper-base alloy water lines, said flux composition containing the following ingredients in substantially the following proportions by weight %: At least one water-soluble surfactant selected from the class consisting of (a) propylene oxide-ethylene oxide adducts of a propylene glycol base, and (b) ethylene oxide-propylene oxide adducts of an ethylene glycol base, said surfactant being in the ______________________________________
form of a paste 40-90
An aliphatic hydroxy amine hydrochloride
5-20
Ammonium chloride 2-6
Water 10-40
______________________________________
Claim 11
Dependent Claim
88 words
A water-soluble paste-form flux composition having particular utility for the soldering of copper and copper-base alloy water lines, said flux composition containing the following ingredients in substantially the following proportions by weight %: At least one water-soluble surfactant selected from the class consisting of (a) propylene oxide-ethylene oxide adducts of a propylene glycol base, and (b) ethylene oxide-propylene oxide adducts of an ethylene glycol base, said surfactant being in the ______________________________________
form of a paste 40-90
An aliphatic hydroxy amine hydrochloride
5-20
Ammonium chloride 2-6
Water 10-40
______________________________________
Claim 12
Dependent Claim
15 words
A flux composition according to claim 8, in which the aliphatic hydroxy amine is monoethanolamine.
Claim 13
Dependent Claim
36 words
A flux composition according to claim 9, in which the stated ingredients are present in substantially the following proportions by weight %: ______________________________________
Said paste-form surfactant
40-60
Monoethanolamine hydrochloride
5-20
Ammonium chloride 2-6
Water 20-40
______________________________________
Claim 14
Dependent Claim
27 words
A flux composition according to claim 1, in which the surfactant is an anionic surfactant selected from the class consisting of sulfonates, sulfates, sulfoacetates, sulfosuccinates and phosphates.
References Cited (Backward Citations)
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Cited
US2260986A
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US2522937A
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US2700628A
Cited
US3266949A
Cited
US3912550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |