Patent US4832808A successfully refreshed from Google Patents.
US4832808A
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Polyimides reaction products and use in electrophoretic deposition
Assignee: International Business Machines Corp
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Filing: 1987-01-02
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Granted: 1989-05-23
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Expires: 2007-01-02
Abstract
Abstract Reaction product of a polyimide and a secondary/tertiary polyamine and/or primary/tertiary polyamine, and/or protected primary/tertiary polyamine, and use thereof in electrophoretic deposition.
Inventors
- 👤 Stephen L. Buchwalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:11
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1003; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4461; H; H10; H10W; H10W20/00; H10W20/40; H10W20/45; H10W20/48
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
40 words
Reaction product of an organic, soluble polyimide polymer and a polyamine selected from the group consisting of secondary/tertiary polyamines, protected primary/secondary polyamines, and mixtures thereof to form diamide groups wherein said polyamine contains only one available reactive secondary amino group.
Claim 2
Dependent Claim
40 words
Reaction product of an organic, soluble polyimide polymer and a polyamine selected from the group consisting of secondary/tertiary polyamines, protected primary/secondary polyamines, and mixtures thereof to form diamide groups wherein said polyamine contains only one available reactive secondary amino group.
Claim 3
Dependent Claim
13 words
The reaction product of claim 1 wherein said polyamine is a secondary/tertiary polyamine.
Claim 4
Dependent Claim
13 words
The reaction product of claim 1 wherein said polyamine is a secondary/tertiary diamine.
Claim 5
Dependent Claim
11 words
The reaction product of claim 1 wherein said polyamine is 1-methylpiperazine.
Claim 6
Dependent Claim
31 words
The reaction product of claim 1 wherein the said polyamine is employed in an amount sufficient to react with at least about 10% of the imide groups of said polyimide polymer.
Claim 7
Dependent Claim
31 words
The reaction product of claim 1 wherein the said polyamine is employed in an amount sufficient to react with at least about 25% of the imide groups of said polyimide polymer.
Claim 8
Dependent Claim
43 words
Reaction product of an organic, soluble polyimide polymer and a polyamine selected from the group consisting of secondary/tertiary polyamines, protected primary/secondary polyamines and mixtures thereof to form diamide groups wherein said polyamine contains only one available reactive secondary amino group and an acid.
Claim 9
Dependent Claim
43 words
Reaction product of an organic, soluble polyimide polymer and a polyamine selected from the group consisting of secondary/tertiary polyamines, protected primary/secondary polyamines and mixtures thereof to form diamide groups wherein said polyamine contains only one available reactive secondary amino group and an acid.
Claim 10
Dependent Claim
14 words
The reaction product of claim 7 wherein said acid is an organic carboxylic acid.
Claim 11
Dependent Claim
27 words
The reaction product of claim 7 wherein said acid is selected from the group consisting of acetic acid, oxalic acid, lactic acid, chloroacetic acid, and mixtures thereof.
Claim 12
Dependent Claim
12 words
The reaction product of claim 7 wherein said acid includes acetic acid.
Claim 13
Dependent Claim
12 words
The reaction product of claim 7 wherein said acid includes lactic acid.
Claim 14
Dependent Claim
26 words
The reaction product of claim 7 wherein the acid is employed in an amount to provide an acid to amine equivalent of about 0.9 to 1.1.
Claim 15
Dependent Claim
13 words
The reaction product of claim 7 wherein said polyamine is a secondary/tertiary polyamine.
Claim 16
Dependent Claim
13 words
The reaction production of claim 7 wherein said polyamine is a secondary/tertiary diamine.
Claim 17
Dependent Claim
11 words
The reaction product of claim 7 wherein said polyamine is 1-methylpiperazine.
Claim 18
Dependent Claim
31 words
The reaction product of claim 7 wherein the said polyamine is employed in an amount sufficient to react with at least about 10% of the imide groups of said polyimide polymer.
Claim 19
Dependent Claim
31 words
The reaction product of claim 7 wherein the said polyamine is employed in an amount sufficient to react with at least about 25% of the imide groups of said polyimide polymer.
Claim 20
Dependent Claim
10 words
An aqueous emulsion containing the reaction product of claim 7.
Claim 21
Dependent Claim
18 words
The emulsion of claim 18 that contains about 1% to about 10% by weight of said reaction product.
Claim 22
Independent Claim
64 words
A method of coating a substrate comprising electrophoretically depositing a polyimide polymer onto a conductive substrate from composition containing the reaction product of an organic, soluble polyimide polymer and a polyamine selected from a the group consisting of secondary/tertiary polyamines, protected primary/secondary polyamines, and mixtures thereof to form diamide groups wherein said polyamine contains only one available reactive secondary amino group and an acid.
Claim 23
Independent Claim
64 words
A method of coating a substrate comprising electrophoretically depositing a polyimide polymer onto a conductive substrate from composition containing the reaction product of an organic, soluble polyimide polymer and a polyamine selected from a the group consisting of secondary/tertiary polyamines, protected primary/secondary polyamines, and mixtures thereof to form diamide groups wherein said polyamine contains only one available reactive secondary amino group and an acid.
Claim 24
Dependent Claim
12 words
The method of claim 20 wherein said composition is an aqueous emulsion.
Claim 25
Dependent Claim
14 words
The method of claim 21 wherein said polyimide polymer is deposited onto a cathode.
Claim 26
Dependent Claim
25 words
The method of claim 20 which further includes post-baking after the depositing to remove at least about 90% of the polyamine from the polyimide polymer.
References Cited (Backward Citations)
US4012361A
Cited
US3998904A
Cited
US4053444A
Cited
US3846260A
Cited
US3936404A
Cited
US4046658A
Cited
US4259221A
Cited
US4252707A
Cited
US4334973A
Cited
US4384946A
Cited
US4433131A
Cited
US4425467A
Cited
US4474658A
Cited
US4533448A
Cited
US4526838A
Cited
US4596844A
Cited
US4563515A
Cited
US4576980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |