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US5344740A Expired / Lapsed US ⏱️ 0.0 years remaining

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
•
Filing: 1992-05-04
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Granted: 1994-09-06
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Expires: 2012-05-04
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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)

US3661582A Cited
US4365019A Cited
US5055374A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
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