US4180419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solder flux
Assignee: Rectorseal LLC
•
Filing: 1978-05-23
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Granted: 1979-12-25
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Expires: 1998-05-23
Abstract
Abstract Water soluble soldering flux compositions, and methods of making same are provided. The compositions contain, as the fluxing agent, an effective amount to cause fluxing, at or below the soldering temperature of the piece to be soldered, of a water-soluble ester of phosphoric acid.
Inventors
- 👤 Floyd A. Thompson, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:20
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
44 words
A composition of fluxing agent with a water soluble carrier wherein the fluxing agent consists essentially of a phosphoric ester which is the reaction product of stochiometric amounts of phosphoric acid and a polyhydric alcohol, the alcohol having a molecular weight of about 200.
Claim 2
Dependent Claim
44 words
A composition of fluxing agent with a water soluble carrier wherein the fluxing agent consists essentially of a phosphoric ester which is the reaction product of stochiometric amounts of phosphoric acid and a polyhydric alcohol, the alcohol having a molecular weight of about 200.
Claim 3
Dependent Claim
21 words
In a flux according to claim 1 wherein said polyhydric alcohol is selected from the group consisting of sorbitol and mannitol.
Claim 4
Dependent Claim
13 words
In a flux according to claim 2 wherein said polyhydric alcohol comprises sorbitol.
Claim 5
Dependent Claim
13 words
In a flux according to claim 2 wherein said polyhydric alcohol comprises mannitol.
Claim 6
Dependent Claim
28 words
In a flux according to claim 1, wherein said water soluble carrier is selected from the group consisting of water, an alcohol, a glycol and a glycol ester.
Claim 7
Dependent Claim
13 words
In a flux according to claim 1 wherein said carrier comprises polyethylene glycol.
Claim 8
Dependent Claim
70 words
In a method of manufacturing a soldering flux composition by mixing a fluxing agent in a carrier, the improvement which comprises mixing an effective amount to cause fluxing of the work to be soldered, of an ester of phosphoric acid which consists essentially of the reaction product of stochiometric amounts of phosphoric acid and a polyhydric alcohol with a molecular weight of about 200 and a water soluble carrier therefor.
Claim 9
Dependent Claim
70 words
In a method of manufacturing a soldering flux composition by mixing a fluxing agent in a carrier, the improvement which comprises mixing an effective amount to cause fluxing of the work to be soldered, of an ester of phosphoric acid which consists essentially of the reaction product of stochiometric amounts of phosphoric acid and a polyhydric alcohol with a molecular weight of about 200 and a water soluble carrier therefor.
Claim 10
Dependent Claim
21 words
In a method according to claim 7 wherein said polyhydric alcohol is selected from the group consisting of sorbitol and mannitol.
Claim 11
Dependent Claim
13 words
In a method according to claim 8 wherein said polyhydric alcohol comprises sorbitol.
Claim 12
Dependent Claim
13 words
In a method according to claim 8 wherein said polyhydric alcohol comprises mannitol.
Claim 13
Dependent Claim
26 words
In a method according to claim 7, wherein said carrier is selected from the group consisting of water, an alcohol, a glycol and a glycol ether.
Claim 14
Dependent Claim
13 words
In a method according to claim 7 wherein said carrier comprises polyethylene glycol.
Claim 15
Dependent Claim
76 words
In a method of connecting electrical circuitry by soldering, wherein said circuitry contains surface oxides which must be removed therefrom, the improvement which comprises removing said surface oxides by contacting said circuitry to be soldered with an effective amount, to cause removal of said surface oxides, of an ester of phosphoric acid which consists essentially of the reaction product of stochiometric amounts of phosphoric acid and a polyhydric alcohol with a molecular weight of about 200.
Claim 16
Dependent Claim
76 words
In a method of connecting electrical circuitry by soldering, wherein said circuitry contains surface oxides which must be removed therefrom, the improvement which comprises removing said surface oxides by contacting said circuitry to be soldered with an effective amount, to cause removal of said surface oxides, of an ester of phosphoric acid which consists essentially of the reaction product of stochiometric amounts of phosphoric acid and a polyhydric alcohol with a molecular weight of about 200.
Claim 17
Dependent Claim
21 words
In a method according to claim 13 wherein said polyhydric alcohol is selected from the group consisting of sorbitol and mannitol.
Claim 18
Dependent Claim
13 words
In a method according to claim 14 wherein said polyhydric alcohol comprises sorbitol.
Claim 19
Dependent Claim
13 words
In a method according to claim 14 wherein said polyhydric alcohol comprises mannitol.
Claim 20
Dependent Claim
41 words
Cored solder in which the core comprises a fluxing agent which consists essentially of an ester of phosphoric acid which is the reaction product of stochiometric amounts of phosphoric acid and a polyhydric alcohol with a molecular weight of about 200.
Claim 21
Dependent Claim
41 words
Cored solder in which the core comprises a fluxing agent which consists essentially of an ester of phosphoric acid which is the reaction product of stochiometric amounts of phosphoric acid and a polyhydric alcohol with a molecular weight of about 200.
Claim 22
Dependent Claim
20 words
Cored solder according to claim 17 wherein said polyhydric alcohol is selected from the group consisting of sorbitol and mannitol.
Claim 23
Dependent Claim
12 words
Cored solder according to claim 18 wherein said polyhydric alcohol comprises sorbitol.
Claim 24
Dependent Claim
12 words
Cored solder according to claim 18 wherein said polyhydric alcohol comprises mannitol.
Claim 25
Dependent Claim
23 words
A composition according to claim 1 wherein the fluxing agent is 1 to 20 percent of the composition of fluxing agent and carrier.
Claim 26
Dependent Claim
11 words
A composition of claim 1 wherein the composition contains no acids.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |