Patent US5145532A successfully refreshed from Google Patents.
US5145532A
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Solder precipitating composition
Assignee: Furukawa Electric Co Ltd
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Filing: 1988-09-14
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Granted: 1992-09-08
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Expires: 2008-09-14
Abstract
Abstract A solder precipitating composition comprises a powder of a metal having the highest ionization level among metals constituting a solder alloy to be prepared, and a salt between a carboxylic acid and a remaining metal of the solder alloy. The composition is applied to a surface on which the solder is to be precipitated, and the solder is precipitated, thereby performing soldering.
Inventors
- 👤 Takao Fukunaga
- 👤 Hisao Nakajima
- 👤 Kenzo Kobayashi
- 👤 Masanao Kono
- 👤 Hisao Irie
- 👤 Ryo Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:55
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/34; B23K35/24; B23K35/26; B23K35/262; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3465; H05K3/3485; H05K2203/00; H05K2203/12; H05K2203/125
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
75 words
A solder precipitating composition for precipitating a solder alloy comprising at least two metals, said alloy for achieving an electrical connection of parts, comprising: a powder of a first metal, said first metal having the highest ionization level among the metals constituting the solder alloy; and a carboxylate of a second metal, wherein the solder alloy is precipitated as a result of a substitution reaction between the first metal and metal ions in the carboxylate.
Claim 2
Dependent Claim
75 words
A solder precipitating composition for precipitating a solder alloy comprising at least two metals, said alloy for achieving an electrical connection of parts, comprising: a powder of a first metal, said first metal having the highest ionization level among the metals constituting the solder alloy; and a carboxylate of a second metal, wherein the solder alloy is precipitated as a result of a substitution reaction between the first metal and metal ions in the carboxylate.
Claim 3
Dependent Claim
29 words
The composition according to claim 1, further comprising a solvent and a viscosity stabilizer which are mixed with said metal powder and said metal carboxylate to prepare a paste.
Claim 4
Dependent Claim
37 words
The composition according to claim 1, further comprising a viscosity stabilizer, and wherein said metal carboxylate has a liquid phase, and said metal powder, said metal carboxylate, and said viscosity stabilizer are mixed to prepare a paste.
Claim 5
Dependent Claim
88 words
The composition according to claim 1, wherein a ratio of a weight Wp of a metal P in the form of said metal powder to a weight Ws of a metal S in the form of said metal carboxylate is represented by the following equation: Wp/Ws<Ap/As+Mp/Ms where, As is parts by weight of metal S of said solder alloy, Ap is parts by weight of metal P of said solder alloy, Ms is the atomic weight of metal S, and Mp is the atomic weight of metal P.
Claim 6
Dependent Claim
12 words
The composition according to claim 1, further comprising a sag preventing agent.
Claim 7
Dependent Claim
13 words
The composition according to claim 5, wherein the sag preventing agent contains cellulose.
Claim 8
Dependent Claim
23 words
The composition according to claim 2, wherein said viscosity stabilizer is selected from the group consisting of rosin, castor wax and mixtures thereof.
Claim 9
Dependent Claim
23 words
The composition according to claim 3, wherein said viscosity stabilizer is selected from the group consisting of rosin, castor wax and mixtures thereof.
Claim 10
Dependent Claim
45 words
The solder precipitating composition according to claim 1, consisting essentially of 48.5 weight % of lead naphthenate having 24 weight % lead, 26.7 weight % of tin, 1.2 weight % of castor wax, 12.1 weight % of gum rosin and 11.5 weight % of cellulose.
Claim 11
Dependent Claim
61 words
The solder precipitating composition according to claim 1, consisting essentially of 7 to 60 weight % of a tin powder, 25 to 63 weight % of a lead carboxylate, wherein 10 weight % to 54 weight % of said lead carboxylate is lead, 0 to 26 weight % of a solvent and 1 to 27 weight % of a viscosity stabilizer.
Claim 12
Dependent Claim
27 words
The composition according to claim 10, wherein the lead carboxylate is selected from the group consisting of lead acetate, lead naphthenate, lead rosinate and polymerized lead rosinate.
Claim 13
Dependent Claim
45 words
The composition according to claim 11, wherein the solvent is selected from the group consisting of butyl carbitol and squalene; and wherein the viscosity stabilizer is selected from the group consisting of custer wax, gum rosin and a mixture of custer was and gum rosin.
Claim 14
Dependent Claim
43 words
The composition according to claim 12, wherein the composition consists essentially of 30 weight % tin powder, 25% weight % lead acetate having 54 weight % lead, 24 weight % butyl carbitol, 2 weight % castor wax and 19 weight % gum rosin.
Claim 15
Dependent Claim
38 words
The composition according to claim 12, wherein the composition consists essentially of 30 weight % tin powder, 55 weight % lead naphthenate having 24 weight % lead, 1 weight % castor wax and 14 weight % gum rosin.
Claim 16
Dependent Claim
38 words
The composition according to claim 12, wherein the composition consists essentially of 20 weight % tin powder, 60 weight % lead rosinate having 15 weight % lead, 18 weight % butyl carbitol and 2 weight % castor wax.
Claim 17
Dependent Claim
38 words
The composition according to claim 12, wherein the composition consists essentially of 15 weight % tin powder, 63 weight % polymerized lead rosinate having 10 weight % lead, 21 weight % squalene and 1 weight % castor wax.
Claim 18
Dependent Claim
38 words
The composition according to claim 12, wherein the composition consists essentially of 38 weight % tin powder, 48 weight % lead naphthenate having 24 weight % lead, 2 weight % castor was and 12 weight % gum rosin.
Claim 19
Dependent Claim
38 words
The composition according to claim 12, wherein the composition consists essentially of 60 weight % tin powder, 30 weight % lead rosinate having 15 weight % lead, 9 weight % butyl carbitol and 1 weight % castor wax.
Claim 20
Dependent Claim
38 words
The composition according to claim 12, wherein the composition consists essentially of 24 weight % tin powder, 59 weight % lead naphthenate having 24 weight % lead, 2 weight % castor wax and 15 weight % gum rosin.
Claim 21
Dependent Claim
43 words
The composition according to claim 12, wherein the composition consists essentially of 7 weight % tin powder, 40 weight % polymerized lead rosinate having 10 weight % lead, 26 weight % squalene, 2 weight % castor wax and 25 weight % gum rosin.
Claim 22
Dependent Claim
93 words
A solder precipitating composition for precipitating a solder alloy comprising at least two metals, said alloy for achieving an electrical connection of parts, comprising: a powder of a metal which is not contained in said solder alloy and having an ionization level higher than that of any of the metals constituting said solder alloy; and carboxylates of the metals constituting the solder alloy; wherein the solder alloy comprising the metals contained in said carboxylates is precipitated as a result of a substitution reaction between the powdery metal and metal ions in the carboxylates.
Claim 23
Dependent Claim
93 words
A solder precipitating composition for precipitating a solder alloy comprising at least two metals, said alloy for achieving an electrical connection of parts, comprising: a powder of a metal which is not contained in said solder alloy and having an ionization level higher than that of any of the metals constituting said solder alloy; and carboxylates of the metals constituting the solder alloy; wherein the solder alloy comprising the metals contained in said carboxylates is precipitated as a result of a substitution reaction between the powdery metal and metal ions in the carboxylates.
Claim 24
Dependent Claim
51 words
A solder precipitating composition for precipitating a Sn-Pb solder alloy for achieving an electrical connection of parts, comprising: a tin powder; and a lead carboxylate; wherein the Sn-Pb solder alloy is precipitated as a result of a substitution reaction between the tin powder and the lead ion of the lead carboxylate.
Claim 25
Dependent Claim
51 words
A solder precipitating composition for precipitating a Sn-Pb solder alloy for achieving an electrical connection of parts, comprising: a tin powder; and a lead carboxylate; wherein the Sn-Pb solder alloy is precipitated as a result of a substitution reaction between the tin powder and the lead ion of the lead carboxylate.
Claim 26
Dependent Claim
33 words
The composition according to claim 22, wherein the ratio of the weight of Sn powder to the weight of Pb in the lead carboxylate ranges from 16.9 : 10 to 133.3 : 10.
Claim 27
Dependent Claim
33 words
The composition according to claim 22, wherein the ratio of the weight of Sn powder to the weight of Pb in the lead carboxylate ranges from 16.9 : 10 to 33.3 : 10.
Claim 28
Dependent Claim
33 words
The composition according to claim 22, wherein the ratio of the weight of Sn powder to the weight of Pb in the lead carboxylate ranges from 17.5 : 10 to 23.8 : 10.
Claim 29
Dependent Claim
29 words
The composition according to claim 22, wherein the ratio of the weight of Sn powder to the weight of Pb in the lead carboxylate is substantially 22 : 10.
Claim 30
Dependent Claim
34 words
The composition according to claim 22, wherein said lead carboxylate is at least one lead carboxylate selected from the group consisting of a lead rosinate, lead naphthenate, lead stearate, lead acetate and lead oleate.
Claim 31
Dependent Claim
35 words
The composition according to claim 21, wherein said metal powder is selected from the group consisting of Zn powder and In powder, and said metal carboxylates comprise a mixture of lead carboxylate and tin carboxylate.
References Cited (Backward Citations)
DE1508343A1
Cited
US3978378A
Cited
DE3010610A1
Cited
US4490378A
Cited
GB2096036A
Cited
WO1986000146A1
Cited
JPS62227593A
Cited
JPS63114979A
Cited
US4851153A
Cited
US4661173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |