US3895973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activated soldering flux
Assignee: Chevron USA Inc
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Filing: 1973-12-17
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Granted: 1975-07-22
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Expires: 1993-12-17
Abstract
Abstract An activated noncorrosive flux composition for low-melting point alloys is provided comprising a fluxing agent and an amine salt of an alpha-bromo-aliphatic carboxylic acid as an activator agent. A method of fluxing an article to be soldered is also provided comprising applying to the surface of the article to be soldered the above flux composition.
Inventors
- 👤 Robert A Stayner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:52
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/3613; B23K35/3615
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
57 words
A FLUX COMPOSITION FOR LOW-MELTING POINT ALLOYS COMPRISING A ROSIN AND AN AMOUNT EFFECTIVE TO IMPROVE THE ABILITY OF SAID ROSIN TO CLEAN A SURFACE TO BE SOLDERED AND TO PREPARE SAID SURFACE TO RECEIVE SOLDER OF AN ACTIVATOR AGENT COMPRISING AN AMINE SALT OF AN ALPHA-BROMO-ALPHATIC CARBOXYLIC ACID, WHEREIN SAID AMINE SALT HAS THE FOLLOWING FORMULA
Claim 2
Dependent Claim
57 words
A FLUX COMPOSITION FOR LOW-MELTING POINT ALLOYS COMPRISING A ROSIN AND AN AMOUNT EFFECTIVE TO IMPROVE THE ABILITY OF SAID ROSIN TO CLEAN A SURFACE TO BE SOLDERED AND TO PREPARE SAID SURFACE TO RECEIVE SOLDER OF AN ACTIVATOR AGENT COMPRISING AN AMINE SALT OF AN ALPHA-BROMO-ALPHATIC CARBOXYLIC ACID, WHEREIN SAID AMINE SALT HAS THE FOLLOWING FORMULA
Claim 3
Dependent Claim
44 words
A flux composition of claim 1 wherein: (a) R1 represents a hydrocarbyl containing 12 to 18 carbon atoms and 0 to 1 site of olefinic unsaturation, and (b) R2 and R3 each independently represent hydrogen or a hydrocarbyl containing 3 to 16 carbon atoms.
Claim 4
Dependent Claim
21 words
A flux compoSition of claim 2 wherein R2 and R3 each independently represent a hydrocarbyl containing 3 to 16 carbon atoms.
Claim 5
Dependent Claim
21 words
A flux composition of claim 2 wherein R2 and R3 each independently represent a hydrocarbyl containing 6 to 10 carbon atoms.
Claim 6
Dependent Claim
13 words
A flux composition of claim 2 wherein R2 and R3 each represent 2-ethylhexyl.
Claim 7
Dependent Claim
13 words
A flux composition of claim 2 wherein R2 and R3 each represent hexyl.
Claim 8
Dependent Claim
13 words
A flux composition of claim 2 wherein R2 and R3 each represent octyl.
Claim 9
Dependent Claim
38 words
A flux composition of claim 1 wherein said fluxing agent comprises 25 to 45 percent weight gum rosin, 50 to 70 percent weight of a C2-C6 alcohol, and 1 to 10 percent weight of a C2-C8 alkylene glycol.
Claim 10
Dependent Claim
38 words
A flux composition of claim 2 wherein said fluxing agent comprises 25 to 45 percent weight gum rosin, 50 to 70 percent weight of a C2-C6 alcohol, and 1 to 10 percent weight of a C2-C8 alkylene glycol.
Claim 11
Dependent Claim
38 words
A flux composition of claim 4 wherein said fluxing agent comprises 25 to 45 percent weight gum rosin, 50 to 70 percent weight of a C2-C6 alcohol, and 1 to 10 percent weight of a C2-C8 alkylene glycol.
Claim 12
Dependent Claim
38 words
A flux composition of claim 5 wherein said fluxing agent comprises 30 to 40 percent weight gum rosin, 55 to 65 percent weight of a C2-C4 alcohol and 3 to 7 percent weight of a C4-C8 alkylene glycol.
Claim 13
Dependent Claim
34 words
A flux composition of claim 5 wherein said fluxing agent comprises 30 to 40 percent gum rosin, 55 to 65 percent weight of isopropyl alcohol and 3 to l7 percent weight of hexylene glycol.
Claim 14
Dependent Claim
26 words
A method of fluxing an article to be soldered comprising applying to the surface of the article to be soldered a flux composition of claim 1.
Claim 15
Dependent Claim
26 words
A method of fluxing an article to be soldered comprising applying to the surface of the article to be soldered a flux composition of claim 2.
Claim 16
Dependent Claim
26 words
A method of fluxing an article to be soldered comprising applying to the surface of the article to be soldered a flux composition of claim 4.
Claim 17
Dependent Claim
26 words
A method of fluxing an article to be soldered comprising applying to the surface of the article to be soldered a flux composition of claim 5.
Claim 18
Dependent Claim
26 words
A method of fluxing an article to be soldered comprising applying to the surface of the article to be soldered a flux composition of claim 6.
Claim 19
Dependent Claim
26 words
A method of fluxing an article to be soldered comprising applying to the surface of the article to be soldered a flux composition of claim 7.
Claim 20
Dependent Claim
26 words
A method of fluxing an article to be soldered comprising applying to the surface of the article to be soldered a flux composition of claim 8.
Claim 21
Dependent Claim
26 words
A method of fluxing an article to be soldered comprising applying to the surface of the article to be soldered a flux composition of claim 12.
Claim 22
Dependent Claim
84 words
A flux composition for low-melting point alloys comprising a rosin and an amount effective to improve the ability of said rosin to clean a surface to be soldered and to prepare said surface to receive solder of an activator agent comprising a primary or secondary hydrocarbyl amine salt of an alpha-bromo-hydrocarbyl carboxylic acid wherein said amine contains 6 to 40 carbon atoms to insure substantial water insolubility of said activator agent and the hydrocarbyl group of said acid contains 5 to 21 carbon atoms.
Claim 23
Dependent Claim
84 words
A flux composition for low-melting point alloys comprising a rosin and an amount effective to improve the ability of said rosin to clean a surface to be soldered and to prepare said surface to receive solder of an activator agent comprising a primary or secondary hydrocarbyl amine salt of an alpha-bromo-hydrocarbyl carboxylic acid wherein said amine contains 6 to 40 carbon atoms to insure substantial water insolubility of said activator agent and the hydrocarbyl group of said acid contains 5 to 21 carbon atoms.
Claim 24
Independent Claim
91 words
A method of fluxing an article to be soldered comprising applying to the surface of the article to be soldered a flux composition comprising a rosin and an amount effective to improve the ability of said rosin to clean a surface to be soldered and to prepare said surface to receive solder of an activator agent comprising a primary or secondary hydrocarbyl aMine salt of an alpha-bromo-hydrocarbyl carboxylic acid wherein said amine contains 6 to 40 carbon atoms and the hydrocarbyl group of said acid contains 5 to 21 carbon atoms.
Claim 25
Independent Claim
91 words
A method of fluxing an article to be soldered comprising applying to the surface of the article to be soldered a flux composition comprising a rosin and an amount effective to improve the ability of said rosin to clean a surface to be soldered and to prepare said surface to receive solder of an activator agent comprising a primary or secondary hydrocarbyl aMine salt of an alpha-bromo-hydrocarbyl carboxylic acid wherein said amine contains 6 to 40 carbon atoms and the hydrocarbyl group of said acid contains 5 to 21 carbon atoms.
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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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |