US4415652A
Expired / Lapsed
US
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Aqueous processable, positive-working photopolymer compositions
Assignee: EIDP Inc
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Filing: 1982-07-27
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Granted: 1983-11-15
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Expires: 2002-07-27
Abstract
Abstract Three-component aqueous processable, positive-working photopolymer compositions comprising (i) an unsaturated polymer comprising (a) about 20 to 1000 milliequivalents of reactive unsaturated carbon to carbon groups per 100 g of polyene and (b) about 10 to 50 mol percent of N-alkenylmaleimide units; (ii) a reactive mercapto acid and (iii) a radiation-sensitive, radical-generating initiator; substrates coated with such compositions; and a photoimaging process.
Inventors
- 👤 Stephen Proskow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:24
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/0045; G03F7/027; G03F7/0275; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
135 words
A photosensitive composition comprising the following components: (i) about 10 to 90 percent by total weight of components (i), (ii), and (iii), of a polyene having a number average molecular weight of about 1,000 to 25,000, said polyene containing (a) about 20 to 1000 milliequivalents of reactive unsaturated carbon to carbon groups per 100 g of polyene, and (b) about 10 to 50 mole percent of N-alkenylmaleimide units in which the alkenyl group contains about 3 to 18 carbon atoms; (ii) about 5 to 50 percent by total weight of components (i), (ii), and (iii), of a reactive mercapto acid; and (iii) about 0.1 to 50 percent by total weight of components (i), (ii), and (iii) of a radiation-sensitive, radical-generating system, activatable by actinic radiation to initiate addition of the mercapto acid to the polyene.
Claim 2
Dependent Claim
135 words
A photosensitive composition comprising the following components: (i) about 10 to 90 percent by total weight of components (i), (ii), and (iii), of a polyene having a number average molecular weight of about 1,000 to 25,000, said polyene containing (a) about 20 to 1000 milliequivalents of reactive unsaturated carbon to carbon groups per 100 g of polyene, and (b) about 10 to 50 mole percent of N-alkenylmaleimide units in which the alkenyl group contains about 3 to 18 carbon atoms; (ii) about 5 to 50 percent by total weight of components (i), (ii), and (iii), of a reactive mercapto acid; and (iii) about 0.1 to 50 percent by total weight of components (i), (ii), and (iii) of a radiation-sensitive, radical-generating system, activatable by actinic radiation to initiate addition of the mercapto acid to the polyene.
Claim 3
Dependent Claim
26 words
A composition according to claim 1 wherein the polyene is present at about 40 to 80 percent by total weight of components (i), (ii) and (iii).
Claim 4
Dependent Claim
17 words
A composition according to claim 2 wherein the polyene contains at least one group selected from ##STR5##
Claim 5
Dependent Claim
61 words
A composition according to claim 3 wherein the polyene is derived from copolymers of maleic anhydride with at least one member of the group consisting essentially of styrene, α-methylstyrene, p-chlorostyrene, p-methylstyrene, p-bromostyrene, methyl acrylate, ethyl acrylate, methyl methacrylate, allyl methacrylate and butyl methacrylate; butadiene; ethylene; methyl vinyl ether, ethyl vinyl ether, isopropyl vinyl ether, 2-ethylhexyl vinyl ether, and butyl vinyl ether.
Claim 6
Dependent Claim
23 words
A composition according to claim 4 wherein the polyene consists essentially of an N-alkenylmaleimide derivative of a copolymer of styrene and maleic anhydride.
Claim 7
Dependent Claim
46 words
A composition according to any one of claims 1, 2, 3, 4 or 5 wherein the molecular weight of the polyene is about 1,000 to 10,000 and there are about 50 to 500 milliequivalents of reactive unsaturated carbon to carbon groups per 100 grams of polyene.
Claim 8
Dependent Claim
30 words
A composition according to claim 1 wherein the mercapto acid is present in an amount of about 10 to 40 percent by total weight of components (i), (ii) and (iii).
Claim 9
Dependent Claim
14 words
A composition according to claim 7 wherein the mercapto acid is a mercaptocarboxylic acid.
Claim 10
Dependent Claim
38 words
A composition according to any one of claims 1, 7 or 8 wherein the mercapto acid has the structure HS-R-CO.sub.2 H wherein R is alkylene of 1 to 18 carbons, unsubstituted or substituted with carboxyl or alkoxycarbonyl groups.
Claim 11
Dependent Claim
30 words
A composition according to claim 1 wherein the radical-generating system is present in an amount of about 1 to 20 percent by total weight of components (i), (ii) and (iii).
Claim 12
Dependent Claim
16 words
A composition according to claim 1 or 10 wherein the radical-generating system comprises a benzoin ether.
Claim 13
Dependent Claim
40 words
A composition according to claim 6 wherein the mercapto acid has the structure HS-R-CO.sub.2 H wherein R is alkylene of 1 to 18 carbons, unsubstituted or substituted with carboxyl or alkoxycarbonyl groups, and the radical-generating system comprises a benzoin ether.
Claim 14
Dependent Claim
23 words
A composition according to claim 5 wherein the mercapto acid is 11-mercaptoundecanoic acid and the radical-generating system is the compound, benzil dimethyl ketal.
Claim 15
Dependent Claim
16 words
A composition according to claim 5 wherein the radical-generating system comprises 4-methyl-4-trichloromethyl-2,5-cyclohexadienone, benzophenone, amd Michler's ketone.
Claim 16
Dependent Claim
13 words
A composition according to claim 14 wherein the mercapto acid is 11-mercaptoundecanoic acid.
Claim 17
Dependent Claim
26 words
A composition according to one of claims 13, 14 or 15 wherein the polyene is an N-alkenylmaleimide derivative of a copolymer of styrene and maleic anhydride.
Claim 18
Dependent Claim
14 words
A photosensitive element comprising a substrate coated with the photosensitive composition of claim 1.
Claim 19
Dependent Claim
14 words
A photosensitive element comprising a substrate coated with the photosensitive composition of claim 13.
Claim 20
Dependent Claim
14 words
A photosensitive element comprising a substrate coated with the photosensitive composition of claim 14.
Claim 21
Dependent Claim
12 words
A photosensitive element according to claim 17 wherein the substrate is copper.
Claim 22
Dependent Claim
12 words
A photosensitive element according to claim 18 wherein the substrate is copper.
Claim 23
Dependent Claim
12 words
A photosensitive element according to claim 19 wherein the substrate is copper.
Claim 24
Dependent Claim
20 words
A method of photoimaging comprising imagewise exposing the photosensitive element of claim 17 to actinic radiation, and developing the image.
Claim 25
Dependent Claim
20 words
A method of photoimaging comprising imagewise exposing the photosensitive element of claim 18 to actinic radiation, and developing the image.
Claim 26
Dependent Claim
20 words
A method of photoimaging comprising imagewise exposing the photosensitive element of claim 19 to actinic radiation, and developing the image.
Claim 27
Independent Claim
17 words
A method according to any one of claims 23, 24 or 25 wherein the substrate is copper.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |