US5061744A
Expired / Lapsed
US
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Resist ink composition
Assignee: Somar Corp
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Filing: 1989-07-05
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Granted: 1991-10-29
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Expires: 2009-07-05
Abstract
Abstract A resist ink composition suitable for forming a masking pattern resistive against chemical attack by a chemical plating liquor is disclosed which comprises: a phenol novolak epoxy resin having an epoxy equivalent of 170-250; a phenol novolak resin having a softening point of 60 DEG -130 DEG C.; a montmorillonite organic complex such as bentonite ion-exchanged with an organic cation; a curing-accelerating catalyst; and an organic solvent.
Inventors
- 👤 Osamu Ogitani
- 👤 Takashi Shimizu
- 👤 Ryuichi Fujii
- 👤 Masao Kawashima
- 👤 Tuyoshi Kobayashi
- 👤 Ichiro Akutagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:50
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/182; H05K3/184; H05K2201/00; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/0209; H05K2203/00; H05K2203/11; H05K2203/1173; H05K3/0073; H05K3/0076
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
77 words
A resist ink composition comprising: a phenol novolak epoxy resin having an epoxy equivalent of 170-250; a phenol novolak resin having a softening point of 60°-130° C.; an aliphatic polyol glycidyl ether in the amount of 10-100% based on the weight of said phenol novolak epoxy resin; a polybutadiene in the amount of 10% or less based on the weight of said phenol novolak epoxy resin; a montmorillonite organic complex; a curing-accelerating catalyst; and an organic solvent.
Claim 2
Dependent Claim
77 words
A resist ink composition comprising: a phenol novolak epoxy resin having an epoxy equivalent of 170-250; a phenol novolak resin having a softening point of 60°-130° C.; an aliphatic polyol glycidyl ether in the amount of 10-100% based on the weight of said phenol novolak epoxy resin; a polybutadiene in the amount of 10% or less based on the weight of said phenol novolak epoxy resin; a montmorillonite organic complex; a curing-accelerating catalyst; and an organic solvent.
Claim 3
Dependent Claim
20 words
A resist ink composition according to claim 1, wherein said phenol novolak resin has a hydroxyl group equivalent of 100-150.
Claim 4
Dependent Claim
63 words
A resist ink composition according to claim 1, wherein the weight ratio of said phenol novolak resin to said phenol novolak epoxy resin is in the range of 0.5E 1 /E 2 to 2E 1 /E 2 where E 1 and E 2 represent the hydroxyl equivalent of said phenol novolak resin and the epoxy equivalent of said phenol novolak epoxy resin, respectively.
Claim 5
Dependent Claim
19 words
A resist ink composition according to claim 1, wherein said montmorillonite organic complex is bentonite ion-exchanged with alkyl ammonium.
Claim 6
Dependent Claim
38 words
A resist ink composition according to claim 1, wherein said montmorillonite organic complex is used in an amount of 3-25% by weight based on the total of the phenol novolak epoxy resin, phenol novolak resin and curing-accelerating catalyst.
Claim 7
Dependent Claim
20 words
A resist ink composition according to claim 1, wherein said aliphatic polyol glycidyl ether has an epoxy equivalent of 100-400.
Claim 8
Dependent Claim
41 words
A resist ink composition according to claim 1, wherein said polybutadiene has a molecular weight of 1,000-7,000 and contains 70-90% by weight of a cis-1,4-butadiene unit, 10-30% by weight of a trans-1,4-butadiene unit and 0-10% by weight of a 1,2-butadiene unit.
Claim 9
Dependent Claim
60 words
A resist ink composition according to claim 4, wherein said alkyl ammonium is one expressed by the following general formula: (R.sup.1).sub.n N(R.sup.2).sub.m wherein R 1 is hydrogen or a lower alkyl, R 2 is an alkyl having 8-20 carbon atoms, n is an integer of 2 or 3, m is an integer of 1 or 2 where m+n is 4.
Claim 10
Dependent Claim
90 words
A two-part ink consisting of: a first part comprising: a phenol novolak epoxy resin having an epoxy equivalent of 170-250, an aliphatic polyol glycidyl ether in the amount of 10-100% based on the weight of said phenol novolak epoxy resin, a polybutadiene, a montmorillonite organic complex, and an organic solvent; and a second part comprising: a phenol novolak resin having a softening point of 60-130, a curing-accelerating catalyst, and an organic solvent, said first and second parts, when mixed with each other, affording a composition serving as a resist ink.
Claim 11
Dependent Claim
90 words
A two-part ink consisting of: a first part comprising: a phenol novolak epoxy resin having an epoxy equivalent of 170-250, an aliphatic polyol glycidyl ether in the amount of 10-100% based on the weight of said phenol novolak epoxy resin, a polybutadiene, a montmorillonite organic complex, and an organic solvent; and a second part comprising: a phenol novolak resin having a softening point of 60-130, a curing-accelerating catalyst, and an organic solvent, said first and second parts, when mixed with each other, affording a composition serving as a resist ink.
Claim 12
Dependent Claim
17 words
A two-part ink according to claim 11, wherein said second part further contains a montmorillonite organic complex.
Claim 13
Dependent Claim
21 words
A resist ink composition according to claim 1, wherein said montmorillonite organic complex has an average particle size of 0.05-10 μm.
Claim 14
Dependent Claim
21 words
A resist ink composition according to claim 11, wherein said montomorillonite organic complex has an average particle size of 0.1-5 μm.
Claim 15
Dependent Claim
26 words
A resist ink composition according to claim 1 containing said polybutadiene in the amount of 0.05-5% based on the weight of said phenol novolak epoxy resin.
Claim 16
Dependent Claim
33 words
A two-part ink according to claim 9 wherein said polybutadiene is present in said first part in the amount of 10% or less based on the weight of said phenol novolak epoxy resin.
Claim 17
Dependent Claim
29 words
A two-part ink according to claim 9 wherein said first part contains said polybutadiene in the amount of 0.05-5% based on the weight of said phenol novolak epoxy resin.
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) | 1994-10-28 | 1995-04-29 | 1995-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-28 | 1999-04-29 | 1999-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-28 | 2003-04-29 | 2003-10-29 | $7700.00 | Window Closed / Lapsed |