Patent US4077815A successfully refreshed from Google Patents.
US4077815A
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US
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Water soluble flux
Assignee: International Business Machines Corp
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Filing: 1976-12-20
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Granted: 1978-03-07
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Expires: 1996-12-20
Abstract
Abstract A water soluble flux composition includes a vehicle portion of polyoxyethylene-polyoxypropylene block copolymers and their adducts of trimethylolpropane along with an activator portion of tetrakis hydroxyalkyl derivatives of alkalene diamines such as N,N,N',N'-tetrakis (2-hydroxypropyl) ethylenediamine and/or a long chain alkyldiethanolamine, such as polyoxyethylene soyamine.
Inventors
- 👤 Philipp William Hans Schuessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:36
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/3613
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A water soluble fluxing composition which comprises: from about 90 to 99.5 percent by weight of composition of a vehicle portion consisting essentially of block copolymers of polyoxyethylene and polyoxypropylene and trimethylol derivatives thereof, and from about 0.5 to 10 percent by weight of composition of an activator portion selected from the group consisting of tetrakis hydroxyalkyl derivatives of alkylene diamines, long chain alkyldiethyanolamines where the alkyl group contains from about 12 to 18 carbon atoms, and mixtures thereof.
Claim 2
Dependent Claim
79 words
A water soluble fluxing composition which comprises: from about 90 to 99.5 percent by weight of composition of a vehicle portion consisting essentially of block copolymers of polyoxyethylene and polyoxypropylene and trimethylol derivatives thereof, and from about 0.5 to 10 percent by weight of composition of an activator portion selected from the group consisting of tetrakis hydroxyalkyl derivatives of alkylene diamines, long chain alkyldiethyanolamines where the alkyl group contains from about 12 to 18 carbon atoms, and mixtures thereof.
Claim 3
Dependent Claim
52 words
The fluxing composition of claim 1 in which the vehicle is a mixture of two water soluble polyoxyethylene-polyoxypropylene block copolymer derivatives of trimethylolpropane having different viscosities, in proportions such that said composition has a viscosity in the range of from about 15,000 to 20,000 CST at a temperature of about 23° C.
Claim 4
Dependent Claim
34 words
The fluxing composition of claim 1 in which the activator is a mixture of N,N,N',N'-tetrakis (2-hydroxypropyl) ethylene diamine and a long chain alkyldiethanolamine where the alkyl group contains about 12 to 18 carbon atoms.
Claim 5
Dependent Claim
21 words
The fluxing composition of claim 3 in which the activator is a mixture of N,N,N',N'-tetrakis (2-hydroxypropyl) ethylene diamine and polyoxyethylene soyamine.
Claim 6
Dependent Claim
27 words
The fluxing composition of claim 1 wherein the composition contains about 98 to 99.5 parts of vehicle portion and about 0.5 to 2 parts of activator portion.
Claim 7
Dependent Claim
27 words
The fluxing composition of claim 1 wherein the vehicle portion is a mixture of a polyoxyethylene-polyoxypropylene block copolymer and a polyoxyethylene-polyoxypropylene block copolymer derivative of trimethylol propane.
References Cited (Backward Citations)
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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) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |