Patent US5344592A successfully refreshed from Google Patents.
US5344592A
Expired / Lapsed
US
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Organic vehicle for electronic composition
Assignee: EIDP Inc
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Filing: 1993-02-16
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Granted: 1994-09-06
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Expires: 2013-02-16
Abstract
Abstract An electronic paste composition is disclosed which contains inorganic particles and a liquid vehicle.
Inventors
- 👤 Lech Wilczek
- 👤 James W. O'Neil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:31
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/02; B23K35/0222; B23K35/0244; B23K35/025
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
158 words
An electronic paste composition comprising: a) inorganic particles and b) a vehicle containing at least one compound having a molecular weight of about 200 to about 500 of the structure, ##STR5## or the structure, ##STR6## or the structure, ##STR7## or the structure, ##STR8## where R 1 through R 8 , are independently selected from the group consisting of hydrogen, phenyl, alkyl containing 1 to 10 carbon atoms, and cycloalkyl containing 5 to 10 carbon atoms, with the proviso that at least one of R 1 and R 2 is different than hydrogen and at least one of R 3 and R 4 is hydrogen; X 1 through X 5 , Y 1 through Y 5 , Z 1 through Z 5 , are independently selected from the group consisting of hydrogen, phenyl, alkyl, cycloalkyl, acyl, alkoxyl, carboxyl, carboxyl ester, and hydroxyl; and wherein said group each contains 10 or fewer carbon atoms; and n is 1 or 2.
Claim 2
Dependent Claim
158 words
An electronic paste composition comprising: a) inorganic particles and b) a vehicle containing at least one compound having a molecular weight of about 200 to about 500 of the structure, ##STR5## or the structure, ##STR6## or the structure, ##STR7## or the structure, ##STR8## where R 1 through R 8 , are independently selected from the group consisting of hydrogen, phenyl, alkyl containing 1 to 10 carbon atoms, and cycloalkyl containing 5 to 10 carbon atoms, with the proviso that at least one of R 1 and R 2 is different than hydrogen and at least one of R 3 and R 4 is hydrogen; X 1 through X 5 , Y 1 through Y 5 , Z 1 through Z 5 , are independently selected from the group consisting of hydrogen, phenyl, alkyl, cycloalkyl, acyl, alkoxyl, carboxyl, carboxyl ester, and hydroxyl; and wherein said group each contains 10 or fewer carbon atoms; and n is 1 or 2.
Claim 3
Dependent Claim
73 words
The composition of claim 1 wherein one of X 1 through X 5 , one of Y 1 through Y 5 , and one of Z 1 through Z 5 are independently selected from the group consisting of phenyl, alkyl, cycloalkyl, acyl, alkoxyl, carboxyl, carboxyl ester, and hydroxyl; and wherein the remaining X 1 through X 5 , Y 1 through Y 5 , and Z 1 through Z 5 are each hydrogen.
Claim 4
Dependent Claim
12 words
Composition of claim 1 wherein the vehicle comprises a mixture of; ##STR9##
Claim 5
Dependent Claim
54 words
The electronic paste composition of claim 3 wherein X 1 through X 5 , Y 1 through Y 5 , and Z 1 through Z 5 , the same or different, are substituents selected from the group consisting of hydrogen, alkyl and acyl; and wherein said substituents each contain 5 or fewer carbon atoms.
Claim 6
Dependent Claim
42 words
The electronic paste composition of claim 4 wherein X 1 through X 5 , Y 1 through Y 5 , Z 1 through Z 5 , the same or different, are substituents selected from the group consisting of hydrogen, t-butyl, and acetyl.
Claim 7
Dependent Claim
33 words
The electronic paste composition of claim 1 wherein the inorganic particles comprise 65 to 95 weight percent of the paste and wherein the vehicle comprises 5 to 35 weight percent of the paste.
Claim 8
Dependent Claim
33 words
The electronic paste composition of claim 6 wherein the inorganic particles comprise 89 to 92 weight percent of the paste and wherein the vehicle comprises 8 to 11 weight percent of the paste.
Claim 9
Dependent Claim
37 words
The electronic paste composition of claim 1 wherein the inorganic particles comprise 65 to 95 weight percent of the paste and wherein said compound or compounds comprise about 5 to about 35 weight percent of the paste.
Claim 10
Dependent Claim
37 words
The electronic paste composition of claim 8 wherein the inorganic particles comprise 89 to 94 weight percent of the paste and wherein said compound or compounds comprise about 6 to about 11 weight percent of the paste.
Claim 11
Dependent Claim
56 words
The composition of claim 3 wherein the formulation comprises: 35 to 45% on a weight basis of the compound of structure VI; and, 55 to 65% on a weight basis of the compound of structure V, wherein X 1 through X 5 , Y 1 through Y 5 , Z 1 through Z 5 are hydrogen.
Claim 12
Dependent Claim
92 words
The composition of claim 3 wherein the formulation comprises: 75 to 100% on a weight basis of the compound of structure V; and, 0 to 25% on a weight basis of the compound of structure VI, wherein X 1 through X 5 , Y 1 through Y 5 , Z 1 through Z 5 are independently selected from the group consisting of hydrogen and t-butyl, with the proviso that at least one of X 1 through X 5 , Y 1 through Y 5 , Z 1 through Z 5 is t-butyl.
Claim 13
Dependent Claim
92 words
The composition of claim 3 wherein the formulation comprises: 75 to 100% on a weight basis of the compound of structure V; and, 0 to 25% on a weight basis of the compound of structure VI, wherein X 1 through X 5 , Y 1 through Y 5 , Z 1 through Z 5 are independently selected from the group consisting of hydrogen and acetyl, with the proviso that at least one of X 1 through X 5 , Y 1 through Y 5 , Z 1 through Z 5 is acetyl.
Claim 14
Dependent Claim
14 words
The electronic paste composition of claim 1 wherein the vehicle further comprises an activator.
Claim 15
Dependent Claim
27 words
The electronic paste composition of claim 13 wherein the activator is selected from the group consisting of substituted malonic acids, unsubstituted malonic acids, alkanolamine and mixtures thereof.
Claim 16
Dependent Claim
26 words
The electronic paste composition of claim 1 wherein the inorganic particles are selected from the group consisting of tin, lead, silver, indium, bismuth, and mixtures thereof.
Claim 17
Dependent Claim
31 words
The composition of claim 1 wherein the vehicle further comprises a rheological modifying agent selected from the group consisting of castor oil, hydrogenated castor oil, rosin, hydrogenated rosin, and mixtures thereof.
Claim 18
Dependent Claim
23 words
The composition of claim 1 wherein the vehicle further comprises a solvent selected from the group consisting of alcohols, ketones, hydrocarbons and esters.
References Cited (Backward Citations)
US4504007A
Cited
DD247346A3
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |