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US5415749A
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Process for electrodeposition of resist formulations which contain metal salts of β-diketones
Assignee: EIDP Inc
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Filing: 1994-03-04
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Granted: 1995-05-16
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Expires: 2014-03-04
Abstract
Abstract A process for electrodepositing a coating on an electroconductive article employed as an anode by immersing the electroconductive article in a photoimageable electrodeposition coating composition comprising an aqueous dispersion of (a) a water-soluble or water-dispersible polymer having an acid value of 20 to 300, and a number average molecular weight of not less than 300 with the proviso that when the polymer is unsaturated, it has an unsaturated equivalent of 150 to 3000, and when the polymer is saturated it is used in combination with an ethylenically unsaturated compound; (b) an initiator or initiating system, and (c) a defined metal salt of a β diketone.
Inventors
- 👤 William L. Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:03
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4484; G; G03; G03F; G03F7/00; G03F7/16; G03F7/164; H; H05; H05K; H05K3/00; H05K3/0073; H05K3/0079
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
191 words
A process for electrodepositing a coating on an electroconductive article which comprises the following steps: immersing the electroconductive article in a photoimageable electrodeposition coating composition comprising an aqueous dispersion of (a) a water-soluble or water-dispersible polymer having an acid value of 20 to 300, and a number average molecular weight of not less than 300; with the proviso that when the polymer is unsaturated it has an unsaturation equivalent of 150 to 3000, and when the polymer is saturated, it is used in combination with an ethylenically unsaturated compound; (b) an initiator or initiating system, and (c) a metal salt of a β diketone having the following general formula: ##STR2## wherein M is a metal cation selected from the group consisting of Al +3 , Ca +2 , Ni +2 , Cr +3 , Mg +2 and Fe +3 ; R and R 1 independently are alkyl of 1 to 18 carbon atoms or aryl of 6 to 30 carbon atoms; n is the valency of the metal; and forming an electrodeposition coated film on the surface of the electroconductive article by supplying electric current to the article as the anode.
Claim 2
Dependent Claim
191 words
A process for electrodepositing a coating on an electroconductive article which comprises the following steps: immersing the electroconductive article in a photoimageable electrodeposition coating composition comprising an aqueous dispersion of (a) a water-soluble or water-dispersible polymer having an acid value of 20 to 300, and a number average molecular weight of not less than 300; with the proviso that when the polymer is unsaturated it has an unsaturation equivalent of 150 to 3000, and when the polymer is saturated, it is used in combination with an ethylenically unsaturated compound; (b) an initiator or initiating system, and (c) a metal salt of a β diketone having the following general formula: ##STR2## wherein M is a metal cation selected from the group consisting of Al +3 , Ca +2 , Ni +2 , Cr +3 , Mg +2 and Fe +3 ; R and R 1 independently are alkyl of 1 to 18 carbon atoms or aryl of 6 to 30 carbon atoms; n is the valency of the metal; and forming an electrodeposition coated film on the surface of the electroconductive article by supplying electric current to the article as the anode.
Claim 3
Dependent Claim
23 words
The process of claim 1 wherein the water-soluble or water-dispersible polymerizable unsaturated polymer is further used in combination with an ethylenically unsaturated compound.
Claim 4
Dependent Claim
16 words
The process of claim 2 wherein the ethylenically unsaturated compound is an unsaturated or polyunsaturated monomer.
Claim 5
Dependent Claim
32 words
The process of claim 1 wherein the β diketone is present in the amount of 0.1 to 10 parts by weight per 100 parts by weight of the water-soluble or water-dispersible polymer.
Claim 6
Dependent Claim
32 words
The process of claim 4 wherein the β diketone is present in the amount of 1 to 5 parts by weight per 100 parts by weight of the water-soluble or water-dispersible polymer.
Claim 7
Dependent Claim
12 words
The process of claim 1 wherein the β diketone is aluminum acetylacetonate.
Claim 8
Dependent Claim
12 words
The process of claim 1 wherein the β diketone is iron acetylacetonate.
Claim 9
Dependent Claim
12 words
The process of claim 1 wherein the β diketone is magnesium acetylacetonate.
Claim 10
Dependent Claim
21 words
The process of claim 1 wherein the water-soluble or water-dispersible polymerizable unsaturated polymer has an acid value of 50 to 70.
Claim 11
Dependent Claim
13 words
The process of claim 1 wherein the water-soluble or water-dispersible polymer is unsaturated.
Claim 12
Dependent Claim
24 words
The process of claim 1 wherein the water-soluble or water-dispersible polymerizable unsaturated polymer has a number average molecular weight of not less than 1000.
Claim 13
Dependent Claim
23 words
The process of claim 1 wherein the water-soluble or water-dispersible polymerizable unsaturated polymer has a glass transition temperature of 0° to 100° C.
Claim 14
Dependent Claim
31 words
The process of claim 1 wherein the initiator is present in the amount of 0.1 to 15 parts by weight per 100 parts by weight of the water-soluble or water-dispersible polymer.
Claim 15
Dependent Claim
23 words
The process of claim 1 wherein the concentration of the photoimageable electrodeposition coating composition is 3 to 25% by weight based on nonvolatiles.
Claim 16
Dependent Claim
23 words
The process of claim 14 wherein the concentration of the photoimageable electrodeposition coating composition is 10 to 20% by weight based on nonvolatiles.
Claim 17
Dependent Claim
21 words
The process of claim 1 wherein the photoimageable electrodeposition coating composition is maintained at a temperature of 15° to 40° C.
Claim 18
Dependent Claim
19 words
The process of claim 1 wherein electric current to the article is supplied for 15 seconds to 5 minutes.
Claim 19
Dependent Claim
15 words
The process of claim 1 wherein the coating has a thickness of 3 to 100μ.
Claim 20
Dependent Claim
15 words
The process of claim 18 wherein the coating has a thickness of 5 to 25μ.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-05-15 | 1998-11-14 | 1999-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-15 | 2002-11-14 | 2003-05-16 | $3760.00 | Window Closed / Lapsed |
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