US3655461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux for aluminum soldering
Assignee: Sanyo Electric Co Ltd
•
Filing: 1970-09-02
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Granted: 1972-04-11
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Expires: 1990-09-02
Abstract
Abstract A flux for soldering aluminum and other nonferrous metals and iron to the same or different metals comprising 50-70 PERCENT EPOXIDE RESIN, 15-30 PERCENT ROSIN 12-18 PERCENT TRIETHANOLAMINE AND 3-5 PERCENT OF A HEAVY METAL FLUOROBORATE OR BORON TRIFLUORIDE MONOETHYLAMINE AND OPTIONALLY AN AROMATIC AMINE OR AMIDE.
Inventors
- 👤 Keiji Miwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:55
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/34; B23K35/36; B23K35/3612; B23K35/3613
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
12 words
The flux of claim 1 wherein the epoxide resin contains glycidyl groups.
Claim 2
Dependent Claim
31 words
The flux of claim 1 wherein the epoxide resin and the rosin form a first composition and the fluoroborate of metal and triethanolamine form a second composition, said compositions being unmixed.
Claim 3
Dependent Claim
14 words
The flux of claim 1 wherein the fluoroborate and triethanolamine are mixed and dehydrated.
Claim 4
Dependent Claim
22 words
The flux of claim 1 wherein the heavy metal is selected from the group of manganese, zinc, cadmium, chromium, iron and tin.
Claim 5
Dependent Claim
16 words
The flux of claim 1 wherein the epoxide resin is the diglycidyl ether of bisphenol A.
Claim 6
Dependent Claim
34 words
The flux of claim 1 wherein the heavy metal is selected from the group of manganese, zinc, cadmium, chromium, iron and tin and wherein the epoxide resin is the diglycidyl ether of bisphenol A.
Claim 7
Dependent Claim
21 words
The flux of claim 1 wherein 2 - 25 percent by weight amines selected from aromatic amines and amides are added.
Claim 8
Dependent Claim
12 words
The flux of claim 8 wherein the hardener is boron trifluoride monoethylamine.
Claim 9
Dependent Claim
15 words
The flux of claim 9 wherein 5 - 10 percent of the amine is used.
Claim 10
Dependent Claim
29 words
The flux of claim 8 wherein the aromatic amine has a boiling point greater than 250* C. and wherein the amide is a polyamide of a monobasic carboxylic acid.
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |