Patent US4237216A successfully refreshed from Google Patents.
US4237216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive patternable coating composition containing novolak type materials
Assignee: International Business Machines Corp
•
Filing: 1978-12-08
•
Granted: 1980-12-02
•
Expires: 1998-12-08
Abstract
Abstract A photosensitive coating composition comprising a reaction product of a monoethylenically unsaturated carboxylic acid and an epoxy polymer having at least about six epoxy groups; a polyethylenically unsaturated compound; and photoinitiator; and method of employing the same.
Inventors
- 👤 Eugene R. Skarvinko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:25
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08F299/028; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/032
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
68 words
A photoprocessable patternable coating composition consisting essentially of: (A) the reaction product from a mixture consisting essentially of: (1) at least one epoxidized nonlinear novolak having at least about six terminal epoxy groups; with (2) at least about 0.9 moles of at least one monoethylenically unsaturated carboxylic acid per epoxide equivalent weight of said novolak; (B) at least one polyethylenically unsaturated compound; and (C) at least one photoinitiator.
Claim 2
Dependent Claim
68 words
A photoprocessable patternable coating composition consisting essentially of: (A) the reaction product from a mixture consisting essentially of: (1) at least one epoxidized nonlinear novolak having at least about six terminal epoxy groups; with (2) at least about 0.9 moles of at least one monoethylenically unsaturated carboxylic acid per epoxide equivalent weight of said novolak; (B) at least one polyethylenically unsaturated compound; and (C) at least one photoinitiator.
Claim 3
Dependent Claim
17 words
The coating composition of claim 1 wherein said novolak has at least about 8 terminal epoxy groups.
Claim 4
Dependent Claim
14 words
The coating composition of claim 1 wherein said novolak has the average formula: ##STR6##
Claim 5
Dependent Claim
25 words
The coating composition of claim 1 wherein said carboxylic acid is selected from the group of acrylic acid, methacrylic acid, crotonic acid, and mixtures thereof.
Claim 6
Dependent Claim
12 words
The coating composition of claim 1 wherein said acid is acrylic acid.
Claim 7
Dependent Claim
28 words
The coating composition of claim 1 wherein the amount of monocarboxylic acid employed is about 0.9 to about 2 moles per epoxide equivalent weight of the epoxidized novolak.
Claim 8
Dependent Claim
28 words
The coating composition of claim 1 wherein the monocarboxylic acid is employed in amounts of about 1 to about 1.2 moles per epoxide equivalent weight of said novolak.
Claim 9
Dependent Claim
23 words
The coating composition of claim 1 wherein the polyethylenically unsaturated compound is present in amounts of about 0.5 to about 40% by weight.
Claim 10
Dependent Claim
23 words
The coating composition of claim 1 wherein the polyethylenically unsaturated compound is present in amounts of about 1 to about 20% by weight.
Claim 11
Dependent Claim
22 words
The coating composition of claim 1 wherein the polyethylenically unsaturated compound is present in amounts of at least about 3% by weight.
Claim 12
Dependent Claim
15 words
The coating composition of claim 1 wherein said polyethylenically unsaturated compound is trimethylol propane triacrylate.
Claim 13
Dependent Claim
16 words
The coating composition of claim 1 wherein said polyethylenically unsaturated compound is a polyethylene glycol diacrylate.
Claim 14
Dependent Claim
21 words
The composition of claim 1 wherein said photoinitiator is present in an amount of about 0.1 to about 10% by weight.
Claim 15
Dependent Claim
22 words
The coating composition of claim 1 wherein said photoinitiator is present in an amount of about 0.1 to about 5% by weight.
Claim 16
Dependent Claim
14 words
The coating composition of claim 1 wherein said photoinitiator includes tert-butyl anthraquinone and benzotriazole.
Claim 17
Dependent Claim
11 words
The coating composition of claim 1 which further includes phenyl imidazole.
Claim 18
Dependent Claim
25 words
The coating composition of claim 1 which further includes a diluent to provide a composition having a viscosity of about 30 to about 2500 centistokes.
Claim 19
Dependent Claim
60 words
The coating composition of claim 3 which further includes phenyl imidazole; wherein said acid is acrylic acid, said polyethylenically unsaturated compound is trimethylol propane triacrylate, or a polyethylene glycol diacrylate or mixture thereof; said photoinitiator includes tert-butyl anthraquinone and benzotriazole; and which further includes a diluent to provide a composition having a viscosity of about 30 to about 2500 centistokes.
Claim 20
Dependent Claim
32 words
The coating composition of claim 1 wherein said photoinitiator is selected from the group of polynuclear quinones, substituted polynuclear quinones, halogen-type sensitiziers, benzotriazole, benzoin, chloroanil, benzil, diacetyl, 5-nitrosalicylaldehyde, 2,4-dinitrotoluene, or mixtures thereof.
References Cited (Backward Citations)
US3301743A
Cited
US3450613A
Cited
US3637618A
Cited
US3804735A
Cited
US3847770A
Cited
US3968016A
Cited
US3912670A
Cited
US4014771A
Cited
US4169732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |