US3960613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax-flux composition containing amine salts of carboxylic acids for soldering
Assignee: Chevron USA Inc
•
Filing: 1975-01-31
•
Granted: 1976-06-01
•
Expires: 1995-01-31
Abstract
Abstract Wax-flux compositions for use in low-temperature soldering processes comprise (A) a major amount of a wax and (B) an effective amount to cause fluxing, at or below the soldering temperature of the piece to be soldered, of a wax-soluble amine salt of an alpha-bromo aliphatic carboxylic acid. A process for soldering electrical components to a printed circuit board comprises (A) applying a molten wax-flux composition as described above to the metal pattern side of the board, (B) allowing the wax-flux composition to solidify, (C) trimming the components leads, and (D) soldering the components to the printed circuit board.
Inventors
- 👤 Robert A. Stayner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:47
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/3618
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
59 words
A wax-flux composition for use in a low-temperature soldering process, comprising: A. a major amount of a wax having an AMP of between 40°C and 100°C, and B. an amount effective to cause fluxing, at or below the soldering temperature of the piece to be soldered in said process of an amine salt of an alpha-bromo aliphatic carboxylic acid.
Claim 2
Dependent Claim
59 words
A wax-flux composition for use in a low-temperature soldering process, comprising: A. a major amount of a wax having an AMP of between 40°C and 100°C, and B. an amount effective to cause fluxing, at or below the soldering temperature of the piece to be soldered in said process of an amine salt of an alpha-bromo aliphatic carboxylic acid.
Claim 3
Dependent Claim
61 words
A wax-flux composition for use in a low-temperature soldering process, comprising: A. a major amount of a wax having an AMP between 40°C and 100°C, and B. an amount effective to cause fluxing, at or below the soldering temperature, of the piece to be soldered in said process of a primary or secondary amine salt of an alpha-bromoaliphatic hydrocarbyl carboxylic acid.
Claim 4
Dependent Claim
61 words
A wax-flux composition for use in a low-temperature soldering process, comprising: A. a major amount of a wax having an AMP between 40°C and 100°C, and B. an amount effective to cause fluxing, at or below the soldering temperature, of the piece to be soldered in said process of a primary or secondary amine salt of an alpha-bromoaliphatic hydrocarbyl carboxylic acid.
Claim 5
Dependent Claim
24 words
A wax-flux composition of claim 2 wherein said amine salt is a primary or secondary hydrocarbyl amine salt of an alpha-bromo-aliphatic hydrocarbyl carboxylic acid.
Claim 6
Dependent Claim
32 words
A wax-flux composition of claim 3 wherein the amine of said amine salt contains 6 to 40 carbon atoms and the hydrocarbyl group of said acid contains 5 to 21 carbon atoms.
Claim 7
Dependent Claim
63 words
A wax-flux composition for use in a low-temperature soldering process, comprising: A. a major amount of a wax having an AMP of between 40°C and 100°C, and B. an amount effective to cause fluxing, at or below the soldering temperature, of the piece to be soldered in said process of an amine salt of an alpha-bromo-aliphatic carboxylic acid of the following formula: ##EQU2##
Claim 8
Dependent Claim
63 words
A wax-flux composition for use in a low-temperature soldering process, comprising: A. a major amount of a wax having an AMP of between 40°C and 100°C, and B. an amount effective to cause fluxing, at or below the soldering temperature, of the piece to be soldered in said process of an amine salt of an alpha-bromo-aliphatic carboxylic acid of the following formula: ##EQU2##
Claim 9
Dependent Claim
56 words
wherein: 1. R 1 represents an aliphatic hydrocarbyl containing 4 to 20 carbon atoms and 0 to 2 sites of olefinic unsaturation; and 2. R 2 and R 3 each independently represent hydrogen or a hydrocarbyl such that the sum of the carbon atoms contained in R 2 and R 3 is between 6 and 40.
Claim 10
Dependent Claim
56 words
wherein: 1. R 1 represents an aliphatic hydrocarbyl containing 4 to 20 carbon atoms and 0 to 2 sites of olefinic unsaturation; and 2. R 2 and R 3 each independently represent hydrogen or a hydrocarbyl such that the sum of the carbon atoms contained in R 2 and R 3 is between 6 and 40.
Claim 11
Dependent Claim
49 words
A wax-flux composition of claim 5 wherein (a) R 1 represents an aliphatic hydrocarbon containing 12 to 18 carbon atoms and 0 to 1 site of olefinic unsaturation, and (b) R 2 and R 3 each independently represent hydrogen or an aliphatic hydrocarbyl containing 3 to 16 carbon atoms.
Claim 12
Dependent Claim
24 words
A wax-flux composition of claim 6 wherein R 2 and R 3 each independently represent an aliphatic hydrocarbyl containing 3 to 16 carbon atoms.
Claim 13
Dependent Claim
24 words
A wax-flux composition of claim 6 wherein R 2 and R 3 each independently represent an aliphatic hydrocarbyl containing 6 to 10 carbon atoms.
Claim 14
Dependent Claim
15 words
A wax-flux composition of claim 6 wherein R 2 and R 3 each represent 2-ethylhexyl.
Claim 15
Dependent Claim
15 words
A wax-flux composition of claim 6 wherein R 2 and R 3 each represent hexyl.
Claim 16
Dependent Claim
15 words
A wax-flux composition of claim 6 wherein R 2 and R 3 each represent octyl.
Claim 17
Dependent Claim
16 words
A wax-flux composition of claim 1 containing 1 to 20 weight percent of said amine salt.
Claim 18
Dependent Claim
16 words
A wax-flux composition of claim 4 containing 1 to 20 weight percent of said amine salt.
Claim 19
Dependent Claim
16 words
A wax-flux composition of claim 5 containing 1 to 20 weight percent of said amine salt.
Claim 20
Dependent Claim
16 words
A wax-flux composition of claim 5 containing 3 to 12 weight percent of said amine salt.
Claim 21
Dependent Claim
16 words
A wax-flux composition of claim 7 containing 1 to 20 weight percent of said amine salt.
Claim 22
Dependent Claim
16 words
A wax-flux composition of claim 7 containing 3 to 12 weight percent of said amine salt.
Claim 23
Dependent Claim
16 words
A wax-flux composition of claim 9 containing 3 to 12 weight percent of said amine salt.
Claim 24
Dependent Claim
16 words
A wax-flux composition of claim 10 containing 3 to 12 weight percent of said amine salt.
Claim 25
Dependent Claim
16 words
A wax-flux composition of claim 11 containing 3 to 12 weight percent of said amine salt.
References Cited (Backward Citations)
US2672479A
Cited
US2978369A
Cited
US2898255A
Cited
US3099590A
Cited
US3459606A
Cited
US3832242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |