US5344740A
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Positive-type photosensitive electrodeposition coating composition containing quinonediazide resin having an anion-forming group and a nitrogen-containing compound and process for producing circuit plate using same
Assignee: Kansai Paint Co Ltd
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Filing: 1992-05-04
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Granted: 1994-09-06
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Expires: 2012-05-04
Abstract
Abstract A positive-type photosensitive electrodeposition coating composition comprising (A) a resin component containing in a molecule at least one unit selected from the group consisting of an ortho-benzoquinonediazidesulfone unit represented by the general formula ##STR1## an ortho-naphthoquinonediazidesulfone unit represented by the general formula ##STR2## as a photosensitive group, and an anion-forming group; and (B) at least one of the specified particular nitrogen-containing compounds. The composition is useful for the production of a circuit plate.
Inventors
- 👤 Naozumi Iwasawa
- 👤 Junichi Higashi
- 👤 Shinsuke Onishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:06
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; G03F7/0226; G03F7/023
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
296 words
A positive-type photosensitive electrodeposition coating composition comprising (A) a resin component containing in the same molecule at least one photosensitive group and an anion-forming group, the photosensitive group being selected from the group consisting of an ortho-benzoquinonediazidesulfone unit represented by the general formula ##STR24## an ortho-naphthoquinonediazidesulfone unit represented by the general formula ##STR25## the amount of the photosensitive group in the resin component being 5 to 60% by weight, the content of the anion-forming group being 0.2 to 2.5 mols per Kg of the solid content of the resin, and the resin having a number-average molecular weight of 3,000 to 100,000, and (B) at least one of the nitrogen-containing compounds represented by the following general formulae (1) to (6): ##STR26## hydroxyl group, R 1 , R 2 and R 3 independently represent a hydrogen atom, a chlorine atom or an alkyl group having 1 to 6 carbon atoms, ##STR27## wherein R 4 and R 5 independently represent a hydrogen atom, or an alkyl group having 1 to 6 carbon atoms, ##STR28## wherein R 6 , R 7 and R 8 independently represent a hydrogen atom, a hydroxyl group or an alkyl group having 1 to 12 carbon atoms, ##STR29## wherein R 9 , R 10 and R 11 independently represent a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 12 carbon atoms or ##STR30## an alkoxy group having 1 to 12 carbon atoms, wherein R 12 represents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 12 carbon atoms or an alkoxy group having 1 to 12 carbon atoms, ##STR31## wherein R 13 and R 14 independently represent a hydrogen atom or an alkyl group having 1 to 12 carbon atoms and n is an integer of 1 to 3.
Claim 2
Dependent Claim
296 words
A positive-type photosensitive electrodeposition coating composition comprising (A) a resin component containing in the same molecule at least one photosensitive group and an anion-forming group, the photosensitive group being selected from the group consisting of an ortho-benzoquinonediazidesulfone unit represented by the general formula ##STR24## an ortho-naphthoquinonediazidesulfone unit represented by the general formula ##STR25## the amount of the photosensitive group in the resin component being 5 to 60% by weight, the content of the anion-forming group being 0.2 to 2.5 mols per Kg of the solid content of the resin, and the resin having a number-average molecular weight of 3,000 to 100,000, and (B) at least one of the nitrogen-containing compounds represented by the following general formulae (1) to (6): ##STR26## hydroxyl group, R 1 , R 2 and R 3 independently represent a hydrogen atom, a chlorine atom or an alkyl group having 1 to 6 carbon atoms, ##STR27## wherein R 4 and R 5 independently represent a hydrogen atom, or an alkyl group having 1 to 6 carbon atoms, ##STR28## wherein R 6 , R 7 and R 8 independently represent a hydrogen atom, a hydroxyl group or an alkyl group having 1 to 12 carbon atoms, ##STR29## wherein R 9 , R 10 and R 11 independently represent a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 12 carbon atoms or ##STR30## an alkoxy group having 1 to 12 carbon atoms, wherein R 12 represents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 12 carbon atoms or an alkoxy group having 1 to 12 carbon atoms, ##STR31## wherein R 13 and R 14 independently represent a hydrogen atom or an alkyl group having 1 to 12 carbon atoms and n is an integer of 1 to 3.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein the resin component (A) is an acrylic resin.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein the anion-forming group is a carboxyl group.
Claim 5
Dependent Claim
19 words
The composition of claim 1 wherein the nitrogen-containing compound (B) is a benzotriazole represented by the general formula (1).
Claim 6
Dependent Claim
16 words
The composition of claim 4 wherein the benzotriazole is selected from the group consisting of ##STR32##
Claim 7
Dependent Claim
34 words
The composition of claim 1 wherein the amount of the nitrogen-containing compound (B) is 0.1 to 20 parts by weight per 100 parts by weight of the solids content of the resin component (A).
Claim 8
Dependent Claim
93 words
A process for producing a circuit plate, which comprises (i) a step of coating the electrodeposition coating composition of claim 1 on a surface of a circuit substrate having an electrically conductive coating to form a positive-type photosensitive coating, (ii) a step of exposing the positive-type photosensitive coating to light via a pattern mask, (iii) a step of forming an etching pattern by removing the photosensitive coating in the exposed portion, (iv) a step of removing the exposed electrically conductive coating by etching, and (v) removing the photosensitive coating on the circuit pattern.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 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 |