US4169732A
Expired / Lapsed
US
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Photosensitive coating composition and use thereof
Assignee: International Business Machines Corp
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Filing: 1978-01-09
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Granted: 1979-10-02
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Expires: 1998-01-09
Abstract
Abstract A photosensitive coating composition comprising reaction products of a monoethylenically unsaturated carboxylic acid and two different epoxy polymers; a polyethylenically unsaturated compound; and photoinitiator; and method of employing the same.
Inventors
- 👤 John F. Shipley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:01
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/032; C; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; C08L; C08L63/00; C08L63/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T428/31529
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
93 words
A photo-processable patternable coating composition consisting essentially of: (a) reaction product of monoethylenically unsaturated carboxylic acid and a bisphenol A-diglycidyl ether epoxide of the formula: ##STR8## (b) reaction product of monoethylenically unsaturated carboxylic acid and an epoxidized novolac of the formula: ##STR9## (c) the ratio of a:b is from about 1:4 to about 4:1; (d) polyethylenically unsaturated compound; (e) photo-initiator; and (f) wherein the relative amount of said acid to each of said epoxides is sufficient to react stoichiometrically with about 20 to about 100 percent of the epoxide functionality of said epoxides.
Claim 2
Dependent Claim
93 words
A photo-processable patternable coating composition consisting essentially of: (a) reaction product of monoethylenically unsaturated carboxylic acid and a bisphenol A-diglycidyl ether epoxide of the formula: ##STR8## (b) reaction product of monoethylenically unsaturated carboxylic acid and an epoxidized novolac of the formula: ##STR9## (c) the ratio of a:b is from about 1:4 to about 4:1; (d) polyethylenically unsaturated compound; (e) photo-initiator; and (f) wherein the relative amount of said acid to each of said epoxides is sufficient to react stoichiometrically with about 20 to about 100 percent of the epoxide functionality of said epoxides.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein the ratio of a:b is about 1:1.
Claim 4
Dependent Claim
21 words
The composition of claim 1 wherein n is about 0.2 to about 100 and m is about 1.5 to about 3.5.
Claim 5
Dependent Claim
25 words
The composition of claim 1 wherein said carboxylic acid is selected from the group consisting of acrylic acid, methacrylic acid, crotonic acid, and mixtures thereof.
Claim 6
Dependent Claim
27 words
A substrate coated with the composition of claim 1 wherein said substrate is releasable from said composition without damaging the integrity of film formed from said composition.
Claim 7
Dependent Claim
36 words
The composition of claim 1 wherein the relative amounts of said acid to both of said epoxides is sufficient to react stoichiometrically with about 25 to about 75 percent of the epoxide functionality of said epoxides.
Claim 8
Dependent Claim
25 words
The composition of claim 1 wherein the combination of said epoxides is from about 20 to about 75 percent by weight of the total composition.
Claim 9
Dependent Claim
16 words
The composition of claim 1 wherein said polyethylenically unsaturated compound is an ester of a polyol.
Claim 10
Dependent Claim
14 words
The composition of claim 1 wherein said polyethylenically unsaturated compound is polyethylene glycol diacrylate.
Claim 11
Dependent Claim
14 words
The composition of claim 1 wherein said polyethylenically unsaturated compound is trimethylol propane triacrylate.
Claim 12
Dependent Claim
26 words
The composition of claim 1 wherein the relative amount of said polyethylenically unsaturated compound is from 0.5 to about 40 percent by weight of said composition.
Claim 13
Dependent Claim
22 words
The composition of claim 1 wherein said polyethylenically unsaturated compound is from 1 to about 20 percent by weight of said composition.
Claim 14
Dependent Claim
12 words
The composition of claim 1 which further includes an organic nonreactive diluent.
Claim 15
Dependent Claim
27 words
The composition of claim 1 which further includes a diluent in an amount sufficient to provide compositions having a viscosity between about 100 and about 1700 centistokes.
Claim 16
Dependent Claim
25 words
The composition of claim 1 which further includes a diluent selected from the group consisting of cellosolve acetate, methylcarbitol, butylcarbital, methylene chloride and methylethyl ketone.
Claim 17
Dependent Claim
16 words
The composition of claim 1 wherein the ratio of a:b is about 3:1 to about 1:3.
Claim 18
Dependent Claim
13 words
The composition of claim 1 wherein n is about 0.2 to about 25.
Claim 19
Dependent Claim
12 words
The composition of claim 1 wherein n is 0.2 to about 10.
Claim 20
Dependent Claim
37 words
The composition of claim 1 which includes up to about 10 percent by weight based upon the total of a and b of a bisphenol A - epichlorohydrin epoxy wherein n is about 10 to about 100.
Claim 21
Dependent Claim
26 words
The composition of claim 1 which includes up to about 10 percent by weight based upon the total of a and b of a phenoxy polymer.
Claim 22
Dependent Claim
9 words
A substrate coated with the composition of claim 1.
Claim 23
Independent Claim
61 words
A method for the production of a negative resist image comprising the steps of: (a) exposing a film to ultraviolet light in a predetermined pattern wherein said film consists essentially of: (1) reaction product of monoethylenically unsaturated carboxylic acid and a bisphenol A-diglycidyl ether epoxide; (2) reaction product of monoethylenically unsaturated carboxylic acid and an epoxidized novolac of the formula: ##STR10##
Claim 24
Independent Claim
61 words
A method for the production of a negative resist image comprising the steps of: (a) exposing a film to ultraviolet light in a predetermined pattern wherein said film consists essentially of: (1) reaction product of monoethylenically unsaturated carboxylic acid and a bisphenol A-diglycidyl ether epoxide; (2) reaction product of monoethylenically unsaturated carboxylic acid and an epoxidized novolac of the formula: ##STR10##
Claim 25
Dependent Claim
76 words
2 (3) the ratio of (1):(2) is from about 1:4 to about 4:1; (4) polyethylenically unsaturated compound; (5) photo-initiator; and (6) wherein the relative amount of said acid to each of said epoxides is sufficient to react stoichiometrically with about 20 to about 100 percent of the epoxide functionality of said epoxides; (b) continuing the exposure until substantial curing of the film is achieved in the exposed areas and removing the unexposed portions of the film.
Claim 26
Dependent Claim
76 words
2 (3) the ratio of (1):(2) is from about 1:4 to about 4:1; (4) polyethylenically unsaturated compound; (5) photo-initiator; and (6) wherein the relative amount of said acid to each of said epoxides is sufficient to react stoichiometrically with about 20 to about 100 percent of the epoxide functionality of said epoxides; (b) continuing the exposure until substantial curing of the film is achieved in the exposed areas and removing the unexposed portions of the film.
Claim 27
Dependent Claim
25 words
The method of claim 22 which further includes post-curing the coating by subjecting it to elevated temperatures after removing the unexposed portions of the film.
Claim 28
Dependent Claim
24 words
The method of claim 22 wherein the post-curing is conducted at about 100 to about 180° C. for about 0.5 to about 10 hours.
Claim 29
Independent Claim
169 words
A method for the production of a negative resist image comprising the steps of: (a) coating a carrier film with a photo-processable patternable composition consisting essentially of: (1) reaction product of monoethylenically unsaturated carboxylic acid and a bisphenol A-diglycidyl ether epoxide; (2) reaction product of monoethylenically unsaturated carboxylic acid and an epoxidized novolac of the formula: ##STR11## (3) the ratio of (1):(2) is from about 1:4 to about 4:1; (4) polyethylenically unsaturated compound; (5) photo-initiator; and wherein the relative amount of said acid to each of said epoxides is sufficient to react stoichiometrically with about 20 to about 100 percent of the epoxide functionality of said epoxide; (b) laminating the film and carrier to a circuit board with the film being adjacent the circuit board; (c) removing said carrier while leaving the film intact; (d) exposing said film to ultraviolet light in a predetermined pattern; (e) continuing the exposure until substantial curing of the film is achieved in the exposed areas and removing the unexposed portions of the film.
Claim 30
Independent Claim
169 words
A method for the production of a negative resist image comprising the steps of: (a) coating a carrier film with a photo-processable patternable composition consisting essentially of: (1) reaction product of monoethylenically unsaturated carboxylic acid and a bisphenol A-diglycidyl ether epoxide; (2) reaction product of monoethylenically unsaturated carboxylic acid and an epoxidized novolac of the formula: ##STR11## (3) the ratio of (1):(2) is from about 1:4 to about 4:1; (4) polyethylenically unsaturated compound; (5) photo-initiator; and wherein the relative amount of said acid to each of said epoxides is sufficient to react stoichiometrically with about 20 to about 100 percent of the epoxide functionality of said epoxide; (b) laminating the film and carrier to a circuit board with the film being adjacent the circuit board; (c) removing said carrier while leaving the film intact; (d) exposing said film to ultraviolet light in a predetermined pattern; (e) continuing the exposure until substantial curing of the film is achieved in the exposed areas and removing the unexposed portions of the film.
Claim 31
Dependent Claim
18 words
The method of claim 25 wherein said carrier is removed prior to exposing the film to ultraviolet light.
Claim 32
Dependent Claim
17 words
The method of claim 25 wherein said carrier is removed after exposing the film to ultraviolet light.
Claim 33
Dependent Claim
38 words
The composition of claim 1 wherein the ratio of a:b is about 1:1; n is about 1.5 to about 3.5; said carboxylic acid is acrylic acid; and wherein said polyethylenically unsaturated compound is polyethylene glycol diacrylate or triacylate.
Claim 34
Dependent Claim
20 words
A substrate coated with the composition of claim 1 to a thickness of about 2 mils to about 10 mils.
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) | 1982-10-01 | 1983-04-02 | 1983-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-01 | 1987-04-02 | 1987-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-01 | 1991-04-02 | 1991-10-02 | $7700.00 | Window Closed / Lapsed |