EP0273207A2
Expired / Lapsed
EP
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Polyimides reaction products and use in electrophoretic deposition
Assignee: International Business Machines Corp
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Filing: 1987-11-27
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Granted: —
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Expires: 2007-11-27
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
EP
Data Source
google_patents
Last Synchronized
2026-11-04 14:33
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: 17
Claim 1
Independent Claim
43 words
Reaction product of an organic, soluble polyimide and a polyamine selected from the group of secondary/tertiary polyamines, primary/tertiary polyamines, protected primary/secondary polyamines, and mixtures thereof wherein said polyamine contains only one available reactive secondary amino group or one available reactive primary amino group.
Claim 2
Dependent Claim
43 words
Reaction product of an organic, soluble polyimide and a polyamine selected from the group of secondary/tertiary polyamines, primary/tertiary polyamines, protected primary/secondary polyamines, and mixtures thereof wherein said polyamine contains only one available reactive secondary amino group or one available reactive primary amino group.
Claim 3
Dependent Claim
12 words
Reaction product of claim 1 wherein said polyamine is a secondary/tertiary polyamine.
Claim 4
Dependent Claim
12 words
Reaction production of claim 1 wherein said polyamine is a secondary/tertiary diamine.
Claim 5
Dependent Claim
10 words
Reaction product of claim 1 wherein said polyamine is 1-methylpiperazine.
Claim 6
Dependent Claim
29 words
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.
Claim 7
Dependent Claim
50 words
Reaction product of claim 1 consisting of an organic, soluble polyimide and a polyamine selected from the group of secondary/tertiary polyamines, primary/tertiary polyamines, and mixtures thereof wherein said polyamine contains only one available reactive secondary amino group or one available reactive primary amino group, and in addition containing an acid.
Claim 8
Dependent Claim
13 words
Reaction product of claim 6 wherein said acid is an organic carboxylic acid.
Claim 9
Dependent Claim
25 words
Reaction product of claim 6 wherein said acid is selected from the group of acetic acid, oxalic acid, lactic acid, chloroacetic acid, and mixtures thereof.
Claim 10
Dependent Claim
11 words
Reaction product of claim 6 wherein said acid includes acetic acid.
Claim 11
Dependent Claim
11 words
Reaction product of claim 6 wherein said acid includes lactic acid.
Claim 12
Dependent Claim
25 words
Reaction product of claim 6 wherein the acid is employed in an amount to provide an acid to amine equivalent of about 0.9 to 1.1.
Claim 13
Dependent Claim
9 words
Aqueous emulsion containing the reaction product of claim 6.
Claim 14
Dependent Claim
17 words
Emulsion of claim 12 that contains about 1% to about 10% by weight of said reaction product.
Claim 15
Dependent Claim
24 words
Method of coating a substrate comprising electrophoretically depositing a polyimide onto a conductive substrate from a composition containing the reaction product of claim 6.
Claim 16
Dependent Claim
12 words
Method of claim 14 wherein said polyimide is deposited onto a cathode.
Claim 17
Dependent Claim
24 words
Method of claim 14 which further includes post-baking after the depositing to remove at least about 90% of the polyamine modification from the polyimide.
References Cited (Backward Citations)
No citation records indexed.
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