Patent US4547304A successfully refreshed from Google Patents.
US4547304A
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Nonfuming solder cleansing and fusing fluids
Assignee: Huntsman Corp
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Filing: 1984-08-30
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Granted: 1985-10-15
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Expires: 2004-08-30
Abstract
Abstract A solder fusing fluid for use in the high temperature cleaning of printed circuit boards and the like comprising an alkylene oxide adduct and a primary amine or an ethoxylate thereof which is water soluble and stable (i.e., non-volatile) at elevated temperatures.
Inventors
- 👤 Edward E. McEntire
- 👤 Gordon H. Neville
- 👤 Edward C. Y. Nieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:28
CPC Classifications
C; C09; C09K; C09K13/00; B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; H; H05; H05K; H05K3/00; H05K3/22; H05K3/26; H05K2203/00; H05K2203/07; H05K2203/0779; H05K2203/0786; H05K2203/12; H05K2203/122
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
25 words
A composition comprising a solder fusing fluid having incorporated therein a cleansing amount of a thermally stable primary amine or ethoxylate of a primary amine.
Claim 2
Dependent Claim
25 words
A composition comprising a solder fusing fluid having incorporated therein a cleansing amount of a thermally stable primary amine or ethoxylate of a primary amine.
Claim 3
Dependent Claim
83 words
A composition as in claim 1 wherein the solder fusing fluid is a hydroxy terminated alkylene oxide adduct of an initiator component and an alkylene oxide component, said initiator component being selected from the class consisting of C 1 -C 20 alcohols, phenol, phenol substituted with alkyl groups containing 1 to 12 carbon atoms, glycols, triols, etc.; said alkylene oxide adduct comprising from about 100 to about 25 wt.% of ethylene oxide and, correspondingly, from 0 to about 25 wt.% of propylene oxide.
Claim 4
Dependent Claim
130 words
A composition as in claim 1 wherein the solder fusing fluid is a hydroxy terminated alkylene oxide adduct of an initiator component and an alkylene oxide component, said initiator component being selected from the class consisting of C 1 -C 20 alcohols, phenol, phenol substituted with alkyl groups containing 1 to 12 carbon atoms, glycols, triols, etc.; said alkylene oxide adduct comprising from about 100 to about 25 wt.% of ethylene oxide and, correspondingly, from 0 to about 75 wt.% of propylene oxide and wherein said thermally stable amine is a primary amine or an ethoxylate of a primary amine which is compatible with said fusing oil, thermally stable and nonfuming in the presence of said fusing oil at temperatures within the range of about 100° to about 300° C.
Claim 5
Dependent Claim
35 words
A composition as in claim 3 wherein the thermally stable cleansing amine is present in the composition in an amount within the range of about 3 to about 100 wt.%, based on the fusing oil.
Claim 6
Dependent Claim
57 words
A composition as in claim 4 wherein the amine is an amine having the formula: ##STR9## wherein R is an alkyl group containing from 10 to 12 carbon atoms, and wherein x+y=10, and wherein the solder fusing fluid is an ethoxylated nonylphenol containing from about 5 to about 15 moles of ethylene oxide per mole of nonylphenol.
Claim 7
Dependent Claim
38 words
A composition as in claim 4 wherein the amine is an amine having the formula: ##STR10## wherein x has a value within the range of about 2 to about 3 and wherein R' independently represents hydrogen or methyl.
Claim 8
Dependent Claim
33 words
A composition as in claim 4 wherein the amine is a compound having the formula: ##STR11## wherein a+c equals an average of about 2.5 and wherein b has a value of about 8.5.
Claim 9
Dependent Claim
42 words
A composition as in claim 4 wherein the amine has the formula: ##STR12## wherein R' is independently hydrogen or methyl, wherein R is an alkoxy radical containing from 10 to 12 carbon atoms and wherein n has a value of about 2.
References Cited (Backward Citations)
US3503883A
Cited
US4510018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |